CO
M
& PL
A E IA
C NT,
CO *
M *H A
PL L
IA O G
NT EN
F
AE
S
n Surface mount packaging for automated
assembly
n Agency recognition:
n Standard 4532 mm (1812 mils) footprint
oH
n Compliant with AEC-Q200 Rev-D Stress
Test Qualification for Passive Components
in Automotive Applications
n 100 % electrically compatible with all
previous generations of 1812 SMT devices
n Compatible with Pb and Pb-free solder
reflow profiles
n RoHS compliant* and halogen free**
*R
C- *R
Q2 oH
00 S
CO and
M
PL
IA
NT
Features
MF-MSMF Series - PTC Resettable Fuses
Electrical Characteristics
Model
Vmax
MF-MSMF010
MF-MSMF020
MF-MSMF020/60
MF-MSMF030
MF-MSMF050
MF-MSMF050/30X
MF-MSMF050/40X
MF-MSMF075
MF-MSMF075/24
60
60
30
60
30
Amps
40
0.14
40
0.2
80
10
100
40
20
13.2
40
100
0.2
0.3
0.5
0.5
0.5
0.75
0.75
6
100
1.1
MF-MSMF110/24X
24
20
MF-MSMF150
6
MF-MSMF110
MF-MSMF110/16
MF-MSMF125
MF-MSMF150/12
24
0.1
40
15
30
Amps
40
MF-MSMF075/33X
33
16
6
12
MF-MSMF150/24X
24
MF-MSMF200
8
MF-MSMF160
MF-MSMF250/16X
MF-MSMF260
MF-MSMF260/16X
MF-MSMF300X
Itrip
at 23 °C
Volts
MF-MSMF014
Imax
Ihold
8
16
20
100
100
100
100
20
100
40
100
0.8
1.1
1.1
1.3
1.5
1.5
1.5
1.6
2.0
2.5
0.3
0.3
0.4
0.4
0.6
1.0
1.0
Resistance
Max. Time
to Trip
at 23 °C
Ohms
at 23 °C
RMin
0.7
0.4
0.4
0.4
0.3
0.15
0.15
1.0
0.15
1.5
0.11
1.5
1.5
0.11
0.11
2.2
0.04
2.2
0.06
2.2
2.5
3.0
3.0
3.0
2.8
4.0
5.0
0.04
0.05
0.03
0.03
0.03
0.035
R1Max Amps
15
6.5
6.0
6.0
3.0
1.0
1.3
1.3
0.45
0.45
0.40
0.21
0.21
0.18
0.14
0.12
0.12
0.12
0.099
Seconds
0.5
1.5
6.0
1.5
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
Tripped
Power
Dissipation
at 23 °C
Watts
1.5
0.2
0.1
0.2
0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.5
0.4
0.5
0.5
1.5
2.0
Typ.
Agency
Recognition
cUL
TÜV
E174545
R50256634
0.8
3
3
3
0.8
3
3
3
3
3
3
0.8
3
3
3
3
3
3
0.8
3
3
3
3
3
3
0.8
3
3
3
3
0.8
3
3
3
0.8
0.8
0.8
0.8
1.4
3
3
0.8
3
3
3
3
0.8
3
3
3
3
3
3
3
0.8
0.8
0.8
0.8
3
3
3
3
1.0
3
3
3
0.8
3
3
0.020
0.080
8.0
2.0
0.8
3
3
0.015
0.100
8.0
5.0
1.2
3
3
6
100
2.6
5.2
0.015
0.080
8.0
5.0
0.8
3
3
3
3
6
100
3.0
5.0
0.010
0.040
8.0
5.0
1.2
3
16
100
2.6
5.0
0.015
0.050
8.0
5.0
AEC-Q200
Compliant
1.2
3
3
Environmental Characteristics
Item
Condition
Criteria
Operating Temperature
-40 °C to +85 °C
Passive Aging
+85 °C, 1000 hours
±5 % typical resistance change
-40 °C to +85 °C, 20 times
±10 % typical resistance change
Recommended Storage
Humidity Aging
Thermal Shock
Solvent Resistance
Vibration
Moisture Sensitivity Level (MSL)
ESD Classification
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
+40 °C max. / 70 % R.H. max.
+85 °C, 85 % R.H. 1000 hours
MIL-STD-202, Method 215
MIL-STD-883C, Method 2007.1 Condition A
See Note
±5 % typical resistance change
No change (marking still legible)
No change (Rmin < R < R1max)
Class 6 (per AEC-Q200-2, HBM)
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less;
(b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl)
content is 1500 ppm or less.
Specifications are subject to change without notice. Users should verify actual device performance in
their specific applications. The products described herein and this document are subject to specific
disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
Applications
n Overcurrent and overtemperature
protection of automotive electronics
n Hard disk drives
n PC motherboards
n PC peripherals
n Point-of-sale (POS) equipment
n PCMCIA cards
n USB port protection - USB 2.0, 3.0 & OTG
n HDMI 1.4 Source protection
MF-MSMF Series - PTC Resettable Fuses
Test Procedures and Requirements
Item
Visual/Mechanical
Resistance
Time to Trip
Hold Current
Trip Cycle Life
Trip Endurance
Solderability
Test Condition
Verify dimensions and materials
In still air @ 23 °C
At specified current, Vmax, 23 °C, still air
30 min. at Ihold, still air
Vmax, Imax, 100 cycles
Vmax, Imax, 48 hours
245 °C ±5 °C, 5 seconds
Accept/Reject Criteria
Per MF physical description
Rmin ≤ R ≤ Rmax
T ≤ max. time to trip (seconds)
No trip
No arcing or burning
No arcing or burning
95 % min. coverage
Product Dimensions (see next page for outline drawings)
Model
Style
MF-MSMF010
MF-MSMF014
MF-MSMF020
MF-MSMF020/60
MF-MSMF030
1
MF-MSMF050
1
MF-MSMF050/30X
MF-MSMF050/40X
MF-MSMF075
MF-MSMF075/24
2
1
MF-MSMF075/33X
2
MF-MSMF110
MF-MSMF110/16
1
MF-MSMF110/24X
2
MF-MSMF125
MF-MSMF150
MF-MSMF150/12
1
MF-MSMF150/24X
2
MF-MSMF160
MF-MSMF200
1
MF-MSMF250/16X
2
MF-MSMF260
1
MF-MSMF260/16X
MF-MSMF300X
2
Min.
A
Max.
Min.
4.37
(0.172)
4.73
(0.186)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
B
C
Max.
Min.
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
4.73
(0.186)
4.83
(0.190)
4.73
(0.186)
4.83
(0.190)
4.73
(0.186)
4.83
(0.190)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
0.55
(0.022)
0.40
(0.016)
0.55
(0.022)
0.70
(0.028)
0.55
(0.022)
0.70
(0.028)
0.85
(0.033)
0.85
(0.033)
0.85
(0.033)
1.60
(0.063)
0.85
(0.033)
1.60
(0.063)
4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.37
(0.172)
4.83
(0.190)
4.73
(0.186)
4.73
(0.186)
4.83
(0.190)
4.73
(0.186)
4.83
(0.190)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.07
(0.121)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
3.41
(0.134)
0.70
(0.028)
0.55
(0.022)
0.45
(0.018)
0.70
(0.028)
0.45
(0.018)
0.70
(0.028)
1.60
(0.063)
0.85
(0.033)
0.85
(0.033)
1.60
(0.063)
0.85
(0.033)
1.60
(0.063)
D
Min.
Max.
0.30
(0.012)
DIMENSIONS:
MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
MF-MSMF Series - PTC Resettable Fuses
100
MF-MSMF010
MF-MSMF200
Product Dimensions (see previous page for dimensions)
Style 1
Style 1
10
Top View
and Bottom View
Top and Bottom
Side View
A
B
B
D
D
Style 2
Style 2
Top View
C
C
Time to Trip (Seconds)
A
Top View
Bottom View Bottom ViewSide View
A
A
8
C
MF-MSMF030
Recommended
Terminal material:
Recommended
Pad Layout Pad Layout
Electroless Ni under immersion Au
Side View
1
3.2 ± 0.1
3.2 ± 0.1
(0.126 ± .004) (0.126 ± .004)
MF-MSMF260
1.5 ± 0.05
1.5 ± 0.05
(.059 ± .002)
(.059 ± .002)
0.1
Side View
2.7 ± 0.1
2.7 ± 0.1
(.106 ± .004) (.106 ± .004)
Recommended
Recommended
Pad Layout Pad Layout
MF-MSMF160
MF-MSMF150
C
C
MF-MSMF125
0.01
8
C
B
2.95 ± 0.10
B
MF-MSMF014
(.114 ± .004)
2.95 ± 0.10 MF-MSMF110
(.114 ± .004) MF-MSMF075
MF-MSMF020
0.001
1.68 ± 0.05
1.68 ± 0.05
(.066 ± .002)
0.1
(.066 ± .002)
D
D
3.1 ± 0.10
MF-MSMF050
3.1 ± 0.10
(.122 ± .004)
(.122 ± .004) 10
1
100
Fault Current (Amps)
Typical Time to Trip at 23 °C
100
MF-MSMF150/12
100
MF-MSMF010
MF-MSMF110/24X
MF-MSMF200
MF-MSMF150/24X
MF-MSMF300X
10
10
MF-MSMF030
MF-MSMF260/16X
Time to Trip (Seconds)
Time to Trip (Seconds)
MF-MSMF050/40X
1
MF-MSMF260
0.1
1
MF-MSMF250/16X
0.1
MF-MSMF160
MF-MSMF150
MF-MSMF125
0.01
0.01
MF-MSMF075/33X
MF-MSMF110
MF-MSMF075
MF-MSMF014
MF-MSMF020/60
MF-MSMF020
0.001
0.1
1
10
100
Fault Current (Amps)
MF-MSMF110/16
MF-MSMF075/24
0.001
MF-MSMF050
0.1
1
10
MF-MSMF050/30X
100
Fault Current (Amps)
The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specific customer
applications may differ from these values MF-MSMF150/12
due to the influence of other variables.
100
MF-MSMF110/24X
Specifications are subject to change
without notice.
MF-MSMF150/24X
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specificMF-MSMF300X
legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
10
MF-MSMF260/16X
MF-MSMF Series - PTC Resettable Fuses
Thermal Derating Table - Ihold (Amps)
Model
Ambient Operating Temperature
-40 °C
-20 °C
0 °C
23 °C
40 °C
50 °C
60 °C
70 °C
85 °C
0.16
0.14
0.12
0.10
0.08
0.07
0.06
0.05
0.03
MF-MSMF010
MF-MSMF014
0.23
0.20
0.17
0.14
0.12
0.10
0.09
0.08
0.06
MF-MSMF020
0.30
0.27
0.23
0.20
0.17
0.15
0.13
0.12
0.09
MF-MSMF020/60
0.29
0.26
0.23
0.20
0.17
0.15
0.13
0.11
0.08
MF-MSMF030
0.46
0.40
0.36
0.30
0.26
0.22
0.20
0.18
0.14
MF-MSMF050
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
MF-MSMF050/30X
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.25
MF-MSMF050/40X
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.25
MF-MSMF075
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
MF-MSMF075/24
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
MF-MSMF075/33X
1.16
1.03
0.90
0.75
0.63
0.56
0.49
0.42
0.32
MF-MSMF110
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
MF-MSMF110/16
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
MF-MSMF110/24X
2.00
1.70
1.40
1.10
0.95
0.88
0.80
0.73
0.61
MF-MSMF125
2.00
1.69
1.47
1.25
1.03
0.92
0.90
0.69
0.53
MF-MSMF150
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
MF-MSMF150/12
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
MF-MSMF150/24X
2.10
1.90
1.70
1.50
1.25
1.13
1.00
0.88
0.69
MF-MSMF160
2.30
2.20
1.90
1.60
1.45
1.30
1.15
1.03
0.91
MF-MSMF200
3.08
2.71
2.35
2.00
1.80
1.60
1.50
1.40
1.25
MF-MSMF250/16X
3.90
3.42
2.96
2.50
2.24
1.98
1.85
1.29
0.94
MF-MSMF260
3.40
3.16
2.90
2.60
2.32
2.18
2.00
1.90
1.69
MF-MSMF260/16X
3.50
3.20
3.00
2.60
2.30
2.15
2.00
1.85
1.63
MF-MSMF300X
4.13
3.75
3.33
3.00
2.70
2.54
2.35
2.22
1.98
Packaging Quantity
MF-MSMF010 ~ MF-MSMF030 = 1500 pcs. per reel
MF-MSMF050 ~ MF-MSMF260 = 2000 pcs. per reel
MF-MSMF075/33X, MF-MSMF110/24X, MF-MSMF150/24X, MF-MSMF250/16X, MF-MSMF260/16X & MF-MSMF300X = 1500 pcs. per reel
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
115Y
BI-WEEKLY DATE CODE:
WEEKS 49-50 = Y
YEAR CODE:
5 = 2015
PART IDENTIFICATION EXAMPLES:
MF-MSMF010 = 10
MF-MSMF110 & 110/16 = 11
MF-MSMF014 = 14
MF-MSMF125 = 12
MF-MSMF020 = 02
MF-MSMF150 & 150/12 = 15
MF-MSMF030 = 30
MF-MSMF160 = 16
MF-MSMF050 = 50
MF-MSMF200 = 20
MF-MSMF075 & 075/24 = 75 MF-MSMF260 = 26
2
PART IDENTIFICATION
EXAMPLE:
MF-MSMF020/60 = 2
PART IDENTIFICATION EXAMPLES:
MF-MSMF050/30X & /40X = 4
MF-MSMF075/33X = H
MF-MSMF110/24X = 6
MF-MSMF150/24X = 8
MF-MSMF250/16X = C
MF-MSMF260/16X = D
MF-MSMF300X = F
8
C
BI-WEEKLY DATE CODE:
WEEKS 5-6 = C
MF-MSMF
Series
- PTC
Resettable
Fuses
3312
- 2 mm
SMD
Trimming
Potentiometer
Typical Part Marking
115Y
Represents total content. Layout may vary.
BI-WEEKLY DATE CODE:
WEEKS 49-50 = Y
YEAR CODE:
5 = 2015
2
PART IDENTIFICATION EXAMPLES:
MF-MSMF010 = 10
MF-MSMF110 & 110/16 = 11
MF-MSMF014 = 14
MF-MSMF125 = 12
MF-MSMF020 = 02
MF-MSMF150 & 150/12 = 15
MF-MSMF030 = 30
MF-MSMF160 = 16
MF-MSMF050 = 50
MF-MSMF200 = 20
MF-MSMF075 & 075/24 = 75 MF-MSMF260 = 26
PART IDENTIFICATION EXAMPLES:
MF-MSMF050/30X & /40X = 4
MF-MSMF075/33X = H
MF-MSMF110/24X = 6
MF-MSMF150/24X = 8
MF-MSMF250/16X = C
MF-MSMF260/16X = D
MF-MSMF300X = F
8
C
PART IDENTIFICATION
EXAMPLE:
MF-MSMF020/60 = 2
BI-WEEKLY DATE CODE:
WEEKS 5-6 = C
Solder Reflow Recommendations
Notes:
tp
TP
CRITICAL ZONE
T L TO TP
RAMP-UP
• Wave soldering is permissible only if the device is on the top
of the PCB, opposite the heat source.
TL
Temperature
tL
• Hand soldering is not recommended for these devices.
TS MAX.
RAMP-DOWN
TS MIN.
• MF-MSMF models are intended for reflow soldering
(including but not limited to heating plate, hot air, IR,
nitrogen, and vapor phase).
• All temperatures refer to the topside of the device,
measured on the device body surface.
• If reflow temperatures exceed the recommended profile,
devices may not meet the published specifications.
ts
• Compatible with Pb and Pb-free solder reflow profiles.
PREHEAT
• Excess solder may cause a short circuit.
• Please refer to the Multifuse® Polymer PTC Resettable
Fuse Soldering Recommendations document for more
details.
25
t 25 °C TO PEAK
Time
Profile Feature
Average Ramp-Up Rate (Ts max to Tp)
3 °C / second max.
PREHEAT:
Temperature Min. (Tsmin)
150 °C
Temperature Max. (Tsmax)
200 °C
Promin
cessto Tsmax) (ts)
Time (Ts
60~180
M
a
t
e
r
i
a
l
s
Temseconds
perature
Description
TIME MAINTAINED ABOVE:
1. Apply solder paste to
• Sn 96.5 / Ag 3.0 / Cu 0.5
Room temperature
Temperature (TL)
217 °C
test board (8 - 10 mil
thick)
Alloy water soluble or no
Time (tL)
60~150 seconds
clean solder paste
(see
note
1)
Peak Temperature (Tp)
260 °C
• single sided epoxy glass
Time within 5 °C of Actual Peak(G10)
Temperature
(t
)
20~40
seconds
p
(UL approved)
•
PC
board
approx.
4x4x.06
in.
Ramp-Down Rate
6 °C / second max.
2.Time
Place25
test
onto Temperature
board 6 units/board
°Cunits
to Peak
8 minutes max.
3. Ramp up
Convection oven
How to Order
Pb-Free Assembly
(see note 2)
Time
Interval
2.5 °C ± 0.5 °/sec.
4. Preheat (TS)
150 °C to 190 °C
90 ± 30 sec.
5. Time above liquidus (TL)
220 °C
60-90 sec.
MF-MSMF
SERIES,
AT, 12/20
6.
Peak temperature
(TPREV.
)
250 °C +0 °/-5 °
MF - MSMF 075/24 - 2
Multifuse® Product
Designator
Series
MSMF
= 4532
(1812 mils)
Inspect
solder
joint mm
to determine
if solder joint is
Surface Mount Component
acceptable (i.e. exhibits wetting of joint’s surface).
Hold Current, Ihold
Use
following
acceptability of printed
the
010-300
(0.10criteria
Amps -(ref.
3.0 Amps)
board
assemblies,
IPC-A-610):
Higher
Voltage Option
Blank
Standard
A) Acceptable
(see= Figure
1) Voltage
/12, /16, /24,
/30,
/33,
/40,
/60
=
Specific
(1) The solder connectionVoltage
wettingRated
angle (solder to
X = Multifuse® freeXpansion
component
and
solder
to PCB termination)
™
Design
does not exceed 90 °.
Packaging
(2)
-2 =
Tape balls
and Reel*
Solder
that do not violate minimum
* Packaged
per EIA-481
electrical
clearances and are attached
(soldered) to a metal surface.
B) Unacceptable (see Figure 2)
(1) Solder connection wetting angle exceeding
90 °.
(2) Incomplete reflow of solder paste.
10-20 sec. within
Specifications are subject to change without notice.
5 °C of peak
(3) Dewetting.
Users should verify actual device performance in their specific applications.
described
herein and this document are subject to specific legalRdisclaimers
7The
. Rproducts
amp dow
n
oom tempas
erset
atuforth
re on
3 °the
C ±last
0.page
5 °C/ofsethis
c. document, and at www.bourns.com/docs/legal/disclaimer.pdf.
(see note 2)
If unacceptable, determine cause and correct prior to
next run.
MF-MSMF Series Tape and Reel Specifications
MF-MSMF050
MF-MSMF050/30X
MF-MSMF050/40X
MF-MSMF075
MF-MSMF075/24
MF-MSMF110
MF-MSMF110/16
MF-MSMF010
MF-MSMF014
MF-MSMF020
MF-MSMF020/60
MF-MSMF030
Tape Dimensions
per EIA-481
12.00 ± 0.30
(0.472 ± 0.012)
4.00 ± 0.10
(0.157 ± 0.004)
40.00 ± 0.20
(1.575 ± 0.008)
8.00 ± 0.10
(0.315 ± 0.004)
2.00 ± 0.05
(0.079 ± 0.002)
3.66 ± 0.15
(0.144 ± 0.006)
4.98 ± 0.15
(0.196 ± 0.006)
5.90
(0.232)
1.50 +0.10/-0
(0.059 +0.004/-0)
5.50 ± 0.05
(0.217 ± 0.002)
1.75 ± 0.10
(0.069 ± 0.004)
10.25
(0.404)
0.60
(0.024)
0.10
(0.004)
0.95 ± 0.10
(0.037 ± 0.004)
390
(15.4)
160
(6.3)
W
P0
10 P0
P1
P2
3.58 ± 0.10
(0.141 ± 0.004)
4.93 ± 0.10
(0.194 ± 0.004)
A0
B0
B1 max.
D0
F
E1
E2 typ.
T max.
T1 max.
1.30 ± 0.10
(0.051 ± 0.004)
K0
MF-MSMF075/33X
MF-MSMF110/24X
MF-MSMF150/24X
MF-MSMF250/16X
MF-MSMF260/16X
MF-MSMF300X
MF-MSMF125
MF-MSMF150
MF-MSMF150/12
MF-MSMF160
MF-MSMF200
MF-MSMF260
Leader min.
Trailer min.
Reel Dimensions
3.70 ± 0.10
(0.146 ± 0.004)
5.10 ± 0.10
(0.201 ± 0.004)
1.50 ± 0.10
(0.059 ± 0.004)
185
(7.3)
50
(2.0)
12.4 +2.0/-0
(0.49 +0.08/-0)
18.4
(0.72)
A max.
N min.
W1
W2 max.
T
D0
P2
P0
E1
DIMENSIONS:
MM
(INCHES)
W2(MEASURED
AT HUB)
COVER
TAPE
F
E2 W
B1
A
N(HUB DIA.)
B0
T1
K0
A0
P1
W1(MEASURED
AT HUB)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Bourns
PPTC Resettable
Fuses
3312
- ®2 Multifuse
mm SMD® Trimming
Potentiometer
Application Notice
• Users are responsible for independent and adequate evaluation of Bourns® Multifuse® Polymer PTC devices in the user’s
application, including the PPTC device characteristics stated in the applicable data sheet.
•
Polymer PTC devices must not be allowed to operate beyond their stated maximum ratings. Operation in excess of such
maximum ratings could result in damage to the PTC device and possibly lead to electrical arcing and/or fire. Circuits with
inductance may generate a voltage above the rated voltage of the polymer PTC device and should be thoroughly evaluated
within the user’s application during the PTC selection and qualification process.
• Polymer PTC devices are intended to protect against adverse effects of temporary overcurrent or overtemperature
conditions up to rated limits and are not intended to serve as protective devices where overcurrent or overvoltage conditions
are expected to be repetitive or prolonged.
•
In normal operation, polymer PTC devices experience thermal expansion under fault conditions. Thus, a polymer PTC
device must be protected against mechanical stress, and must be given adequate clearance within the user’s application to
accommodate such thermal expansion. Rigid potting materials or fixed housings or coverings that do not provide adequate
clearance should be thoroughly examined and tested by the user, as they may result in the malfunction of polymer PTC
devices if the thermal expansion is inhibited.
• Exposure to lubricants, silicon-based oils, solvents, gels, electrolytes, acids, and other related or similar materials may
adversely affect the performance of polymer PTC devices.
•
Aggressive solvents may adversely affect the performance of polymer PTC devices. Conformal coating, encapsulating,
potting, molding, and sealing materials may contain aggressive solvents including but not limited to xylene and toluene,
which are known to cause adverse effects on the performance of polymer PTCs. Such aggressive solvents must be
thoroughly cured or baked to ensure their complete removal from polymer PTCs to minimize the possible adverse effect
on the device.
• Recommended storage conditions should be followed at all times. Such conditions can be found on the applicable data
sheet and on the Multifuse® Polymer PTC Moisture/Reflow Sensitivity Classification (MSL) note:
https://www.bourns.com/docs/RoHS-MSL/msl_mf.pdf
MFAN 12/18
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its
affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
without notice. Users should check for and obtain the latest relevant information and verify that such information is current and
complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components
in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns®
product also can and do vary in different applications and actual performance may vary over time. Users should always verify
the actual performance of the Bourns® product in their specific devices and applications, and make their own independent
judgments regarding the amount of additional test margin to design into their device or application to compensate for
differences between laboratory and real world conditions.
Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry
standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any
failure of an individual Bourns® product to meet the requirements of such industry standard or particular qualification. Users of
Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to their
devices or applications.
Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or
environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a
case-by-case basis, use of any Bourns® products in such unauthorized applications might not be safe and thus is at the user’s
sole risk. Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and
generally equivalent classifications outside of the United States.
Bourns expressly identifies those Bourns® standard products that are suitable for use in automotive applications on such
products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two
authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard products in an automotive
application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk. If Bourns
expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment
or lighting), such identification means that Bourns has reviewed its standard product and has determined that if such Bourns®
standard product is considered for potential use in automotive applications, it should only be used in such sub-category of
automotive applications. Any reference to Bourns® standard product in the data sheet as compliant with the AEC-Q standard
or “automotive grade” does not by itself mean that Bourns has approved such product for use in an automotive application.
Bourns® standard products are not tested to comply with United States Federal Aviation Administration standards generally
or any other generally equivalent governmental organization standard applicable to products designed or manufactured for
use in aircraft or space applications. Bourns expressly identifies Bourns® standard products that are suitable for use in aircraft
or space applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically
approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard
product in an aircraft or space application might not be safe and thus is not recommended, authorized or intended and is at the
user’s sole risk.
The use and level of testing applicable to Bourns® custom products shall be negotiated on a case-by-case basis by Bourns and
the user for which such Bourns® custom products are specially designed. Absent a written agreement between Bourns and the
user regarding the use and level of such testing, the above provisions applicable to Bourns® standard products shall also apply
to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns® products or technology for use in activities which involve the
design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use
Bourns® products or technology in any facility which engages in activities relating to such devices. The foregoing restrictions
apply to all uses and applications that violate national or international prohibitions, including embargos or international
regulations. Further, Bourns® products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns® products may not, without prior
authorization from Bourns and/or the U.S. Government, be resold, transferred, or re-exported to any party not eligible
to receive U.S. commodities, software, and technical data.
To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential,
incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties
of fitness for particular purpose, non-infringement and merchantability.
For your convenience, copies of this Legal Disclaimer Notice with German, Spanish, Japanese, Traditional Chinese and Simplified Chinese
bilingual versions are available at:
Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf
C1753 05/17/18R
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