CO
LO & MP
LI
GE
AN
N
T
FR
EE
Features
Additional Information
n Ultra-low resistance, quick response
n 0805 footprint size and low profile for space-
Click these links for more information:
*R
oH
S
constrained mobile applications
**
HA
n Surface mount packaging for automated
assembly
PRODUCT TECHNICAL INVENTORY SAMPLES
SELECTOR LIBRARY
n RoHS compliant* and halogen free**
CONTACT
PL
IA
N
T
n Agency recognition:
*R
oH
S
CO
M
MF-PSML/X Series - Low Ohmic PTC Resettable Fuses
Electrical Characteristics
FR
EE
at 23 °C
Volts
6
12
6
12
6
12
6
12
6
12
6
12
6
12
6
12
6
12
8
8
8
8
Amps
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
Resistance
Max. Time To Trip
at 23 °C Ohms
at 23 °C
Amps
0.75
1.5
0.75
1.5
1.1
2.2
1.1
2.2
1.25
2.5
1.25
2.5
1.5
3.0
1.5
3.0
1.75
3.5
1.75
3.5
2.0
4.0
2.0
4.0
2.5
5.0
2.5
5.0
2.6
5.2
2.6
5.2
3.0
6.0
3.0
6.0
3.5
7.0
3.8
7.6
4.0
8.0
4.5
9.0
Rmin
0.04
0.04
0.03
0.03
0.02
0.02
0.015
0.015
0.01
0.01
0.005
0.005
0.003
0.003
0.003
0.003
0.003
0.003
0.002
0.001
0.001
0.001
R1max
0.3
0.3
0.21
0.21
0.16
0.16
0.08
0.08
0.065
0.065
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.018
0.016
0.014
0.012
Amps
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
Ro VE LEA
HS RS D
CO ION FRE
M SA E
PL R
IA E
NT
*
MF-PSML075/6
MF-PSML075/12
MF-PSML110/6
MF-PSML110/12
MF-PSML125/6
MF-PSML125/12
MF-PSML150/6
MF-PSML150/12
MF-PSML175/6
MF-PSML175/12
MF-PSML200/6
MF-PSML200/12
MF-PSML250/6
MF-PSML250/12
MF-PSML260/6
MF-PSML260/12
MF-PSML300/6
MF-PSML300/12
MF-PSML350/8
MF-PSML380/8
MF-PSML400/8
MF-PSML450/8
Imax
Itrip
LE
AD
Model
Vmax
Ihold
Seconds
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
1
1
2
2
2
2
4
4
5
5
5
5
12.5
12.5
Tripped
Power
Dissipation
Watts at
23 °C
Typ.
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.9
0.9
0.9
0.9
Agency Recognition
cUL
TÜV
E174545
R50391579
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Environmental Characteristics
Item
Operating Temperature
Storage Condition
Before Opening
After Opening
Floor Condition After Opening
Passive Aging
Humidity Aging
Thermal Shock
Solvent Resistance
Vibration
Moisture Sensitivity Level (MSL)
ESD Classification
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Condition
-40 °C to +85 °C
+40 °C max. / 70 % RH max.
+40 °C max. / 10 % RH max.
Consumption within 4 weeks at floor condition
+30 °C max. / 60 % RH max.
+85 °C, 1000 hours
+85 °C, 85 % R.H. 100 hours
-40 °C to +85 °C, 20 times
MIL-STD-202, Method 215
MIL-STD-883C, Method 2007.1 Condition A
See Note
Class 6 (per AEC-Q200-2, HBM)
Criteria
±10 % typical resistance change
±15 % typical resistance change
±30 % typical resistance change
No change (marking still legible)
No change (Rmin < R < R1max)
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** 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 legal disclaimers as set forth on the last
page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
MF-PSML/X Series - Low Ohmic 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, 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
A
Model
MF-PSML075/6
MF-PSML075/12
MF-PSML110/6
MF-PSML110/12
MF-PSML125/6
MF-PSML125/12
MF-PSML150/6
MF-PSML150/12
MF-PSML175/6
MF-PSML175/12
MF-PSML200/6
MF-PSML200/12
MF-PSML250/6
MF-PSML250/12
MF-PSML260/6
MF-PSML260/12
MF-PSML300/6
MF-PSML300/12
MF-PSML350/8
MF-PSML380/8
MF-PSML400/8
MF-PSML450/8
B
C
D
Min.
Max.
Min.
Max.
Min.
Max.
2.0
(.079)
2.3
(.091)
1.2
(.047)
1.5
(.059)
0.4
(.016)
0.7
(.028)
2.0
(.079)
2.3
(.091)
1.2
(.047)
1.5
(.059)
0.6
(.024)
1.2
(.047)
2.0
(.079)
2.3
(.091)
1.2
(.047)
1.5
(.059)
0.6
(.024)
0.95
(.037)
E
Min.
Min.
Max.
0.2
(.008)
0.05
(.002)
0.45
(.018)
MM
(INCHES)
DIMENSIONS:
Side View
Top View
A
C
Bottom View
D
E
Terminal material:
ENIG-plated terminals
Recommended Pad Layout
1.0
(.039)
1.0
(.039)
1.50
(.059)
B
1.20
(.047)
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-PSML/X Series - Low Ohmic PTC Resettable Fuses
Packaging Quantity
MF-PSML075/6 ~ MF-PSML175/6 = 4,500 pcs. per reel
MF-PSML075/12 ~ MF-PSML175/12 = 4,500 pcs. per reel
MF-PSML200/6 ~ MF-PSML300/6 = 3,000 pcs. per reel
MF-PSML200/12 ~ MF-PSML300/12 = 3,000 pcs. per reel
MF-PSML350/8 ~ MF-PSML450/8 = 3,000 pcs. per reel
Thermal Derating Table - Ihold (Amps)
Model
MF-PSML075/6
MF-PSML075/12
MF-PSML110/6
MF-PSML110/12
MF-PSML125/6
MF-PSML125/12
MF-PSML150/6
MF-PSML150/12
MF-PSML175/6
MF-PSML175/12
MF-PSML200/6
MF-PSML200/12
MF-PSML250/6
MF-PSML250/12
MF-PSML260/6
MF-PSML260/12
MF-PSML300/6
MF-PSML300/12
MF-PSML350/8
MF-PSML380/8
MF-PSML400/8
MF-PSML450/8
Ambient Operating Temperature
-40 °C
-20 °C
0 °C
23 °C
40 °C
50 °C
60 °C
70 °C
85 °C
1.12
1.12
1.65
1.65
1.87
1.87
2.25
2.25
2.62
2.62
2.99
2.99
3.75
3.75
3.89
3.89
4.49
4.49
5.24
5.69
5.99
6.74
1.01
1.01
1.48
1.48
1.69
1.69
2.02
2.02
2.36
2.36
2.70
2.70
3.38
3.38
3.51
3.51
4.05
4.05
4.72
5.12
5.39
6.07
0.95
0.95
1.4
1.4
1.59
1.59
1.9
1.9
2.22
2.22
2.54
2.54
3.18
3.18
3.3
3.3
3.8
3.8
4.44
4.82
5.07
5.71
0.75
0.75
1.1
1.1
1.25
1.25
1.5
1.5
1.75
1.75
2.0
2.0
2.5
2.5
2.6
2.6
3.0
3.0
3.5
3.8
4.0
4.5
0.64
0.64
0.94
0.94
1.06
1.06
1.28
1.28
1.49
1.49
1.70
1.70
2.13
2.13
2.21
2.21
2.55
2.55
2.98
3.24
3.41
3.83
0.58
0.58
0.85
0.85
0.96
0.96
1.16
1.16
1.35
1.35
1.54
1.54
1.92
1.92
2.01
2.01
2.31
2.31
2.70
2.93
3.09
3.47
0.52
0.52
0.77
0.77
0.87
0.87
1.05
1.05
1.22
1.22
1.39
1.39
1.75
1.75
1.81
1.81
2.09
2.09
2.44
2.65
2.79
3.14
0.47
0.47
0.69
0.69
0.79
0.79
0.94
0.94
1.1
1.1
1.26
1.26
1.57
1.57
1.63
1.63
1.89
1.89
2.2
2.39
2.51
2.83
0.37
0.37
0.55
0.55
0.62
0.62
0.75
0.75
0.87
0.87
0.99
0.99
1.24
1.24
1.29
1.29
1.49
1.49
1.74
1.89
1.99
2.24
How to Order
Typical Part Marking
MF - PSML 200 / 12 - 2
Represents total content. Layout may vary.
Multifuse
Product Designator
®
Series
PSML = 0805 Low Ohmic
Surface Mount Component
Hold Current, Ihold
075 ~ 450 (0.75 ~ 4.5 Amps)
Maximum Voltage, Vmax
12 = 12 Volts
8 = 8 Volts
6 = 6 Volts
Packaging
-2 = Tape and Reel Packaged per EIA-481
J2
PART IDENTIFICATION:
MF-PSML075/6 = D6
MF-PSML075/12 = D2
MF-PSML110/6 = E6
MF-PSML110/12 = E2
MF-PSML125/6 = F6
MF-PSML125/12 = F2
MF-PSML150/6 = G6
MF-PSML150/12 = G2
MF-PSML175/6 = H6
MF-PSML175/12 = H2
MF-PSML200/6 = J6
MF-PSML200/12 = J2
MF-PSML250/6 = M6
MF-PSML250/12 = M2
MF-PSML260/6 = N6
MF-PSML260/12 = N2
MF-PSML300/6 = P6
MF-PSML300/12 = P2
MF-PSML350/8 = S8
MF-PSML380/8 = V8
MF-PSML400/8 = U8
MF-PSML450/8 = X8
Manufacturing date code is located on packaging label
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-PSML/X Series - Low Ohmic PTC Resettable Fuses
Typical Time to Trip at 23 °C
100
A
B
Time to Trip (Seconds)
10
D E
F
H
J
K
1
A
B
D
E
F
H
J
K
0.1
0.01
0.001
MF-PSML075/6 & MF-PSML075/12
MF-PSML110/6 & MF-PSML110/12
MF-PSML150/6 & MF-PSML150/12
MF-PSML175/6 & MF-PSML175/12
MF-PSML200/6 & MF-PSML200/12
MF-PSML300/6 & MF-PSML300/12
MF-PSML380/8 & MF-PSML400/8
MF-PSML450/8
0.0001
1
10
100
Fault Current (Amps)
100
Time to Trip (Seconds)
10
G
C
I
1
C MF-PSML125/6 & MF-PSML125/12
G MF-PSML250/6, MF-PSML250/12,
MF-PSML260/6 & MF-PSML260/12
I MF-PSML350/8
0.1
0.01
0.001
0.0001
1
10
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 due to the influence of other variables
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-PSML/X Series - Low Ohmic PTC Resettable Fuses
Solder Reflow Recommendations
Notes:
tp
TP
•
CRITICAL ZONE
T L TO TP
RAMP-UP
•
TL
Temperature
tL
•
Ts max
•
RAMP-DOWN
Ts min
•
ts
PREHEAT
•
•
25
•
t 25 °C TO PEAK
Time
MF-PSML/X models are intended for reflow soldering (including, but
not limited to heating plate, hot air, IR, nitrogen, and vapor phase).
Wave soldering is permissible only if the device is on the top of the
PCB, opposite the heat source.
Hand soldering is not recommended for these devices.
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.
Compatible with Pb and Pb-free solder reflow profiles.
Excess solder may cause a short circuit.
Please refer to the Multifuse® Polymer PTC Resettable Fuse Soldering
Recommendations document for more details.
Profile Feature
Pb-Free Assembly
Average Ramp-Up Rate (Ts max to Tp)
PREHEAT:
Temperature Min. (Tsmin)
Process
Temperature
Max. (Tsmax) Materials
Description
Time (Tsmin to Tsmax) (ts)
3 °C / second max.
150 °C
Temperature
1. Apply solder paste to
• Sn 96.5 / Ag 3.0 / Cu 0.5
Room temperature
test
board
(8 - 10 mil thick)ABOVE:
Alloy water soluble or no
TIME
MAINTAINED
clean solder paste
Temperature (TL)
(see note 1)
Time (tL)
• single sided epoxy glass
(G10) (UL approved)
Peak Temperature (Tp)• PC board approx. 4x4x.06 in.
Inspect solder joint to determine if solder joint is
acceptable (i.e. exhibits wetting of joint’s surface).
60~180 seconds
Use the following criteria (ref. acceptability of printed
board assemblies, IPC-A-610):
Time200 °C
Interval
A) Acceptable (see Figure 1)
217 °C
(1) The solder connection wetting angle (solder to
60~150 seconds
component and solder to PCB termination)
260 °C
does not exceed 90 °.
2. Place
units onto
6 units/board
Timetest
within
5 °Cboard
of Actual
Peak Temperature (tp)
3. Ramp up
Convection oven
(see note 2)
(2) Solder balls that do not violate minimum
20~40 secondselectrical clearances and are attached
(soldered) to a metal surface.
2.5 °C ± 0.5 °/sec.
4. Preheat (TS)
90 ± 30 sec.
Ramp-Down Rate
Timeabove
25 °C
to Peak
5. Time
liquidus
(TL) Temperature
150 °C to 190 °C
220 °C
6. Peak temperature (TP)
(1) Solder connection wetting angle exceeding
60-90 sec.8 minutes max.
90 °.
250 °C +0 °/-5 °
10-20 sec. within
5 °C of peak
7. Ramp down
8. Cleaning water clean profile
6 °C / second
max.
B) Unacceptable
(see Figure 2)
High pressure deionized
water 65 PSI max.
Temperature of Lead/Pad Junction
(Derived using 6-zone Convection Oven)
(2) Incomplete reflow of solder paste.
(3) Dewetting.
Room temperature
(see note 2)
3 °C ± 0.5 °C/sec.
If unacceptable, determine cause and correct prior to
next run.
72 °F to 160 °F
(22 °C to 71 °C)
As required
NOTES:
1. Water soluble solder paste only above 100K.
2. Refer to ref. temperature profile. Temperature at
lead/pad junction with “K” type thermocouple.
3. Units that are board mounted for environmental
testing must see a peak temperature in the reflow
zone, as specified. This is to ensure that all test
units will see “worst case conditions”.
4. Ramp down rate to be measured from 245 °C to
150 °C.
5. Process Description 8 does not apply to open
frame trimmers.
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-PSML/X Series - Low Ohmic PTC Resettable Fuses
Packaging Specifications
MF-PSML/X Series per EIA-481
10X =
40.0 ± 0.20
(1.575 ± .008)
0.60
MAX.
(.024)
1.50 +0.10 / -0
DIA.
(.059 +.004 / -0)
4.00 ± 0.10
(.157 ± .004)
2.00 ± 0.05
(.079 ± .002)
1.75 ± 0.10
(.069 ± .004)
3.50 ± 0.05
(.138 ± .002)
8.00 ± 0.30
(.315 ± .012)
4.35
MAX.
(.171)
K0
COVER
TAPE
2.45 ± 0.10
(.096 ± .004)
0.10
MAX.
(.004)
4.00 ± 0.10
(.157 ± .004)
1.70 ± 0.10
(.067 ± .004)
LEADER MIN.
390
(15.35)
6.25
TYP.
(.246)
TRAILER MIN.
160
(6.30)
K0
0.95 ± 0.10
MF-PSML075/6 ~ MF-PSML175/6, MF-PSML075/12 ~ MF-PSML175/12
(.037 ± .004)
1.21 ± 0.10
MF-PSML200/6 ~ MF-PSML300/6, MF-PSML200/12 ~ MF-PSML300/12, MF-PSML350/8 ~ MF-PSML450/8
(.048 ± .004)
185
MAX.
(7.28)
14.4*
MAX.
(.57)
50 MIN.
(1.97) HUB DIA.
DIMENSIONS:
MM
(INCHES)
8.4 +1.5 / -0*
(331 +.059 / -0)
*MEASURED AT HUB
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
MF-PSML/X SERIES, REV. C, 10/21
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
P[ZHɉSPH[LZJVSSLJ[P]LS`¸)V\YUZ¹
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
^P[OV\[UV[PJL
