SMD2920 SERIES
Positive Temperature Coefficient (PTC) Data Sheet
Description
The 2920 series provides surface mount resettable overcurrent protection with
holding current from 0.3A to 5.0A. This series is suitable for applications with
higher holding current and higher working voltage up to 60V.
Features
■ RoHS compliant and lead-free
■ Halogen-free
■ Compact design saves board space
■ Low profile
■ Fast response to fault current
■ Compatible with high temperature solders
Applications
■ Power over Ethernet (POE)
■ Powered USB for POS and IPC
■ Automotive electronics control
module protection
■
■
■
■
IEEE 1394 port protection
Low voltage telecom equipment
Industrial control
Security systems
Agency Approval and Environmental Compliance
Agency
File Number
Regulation
Standard
UL/CUL
E482628
RoHS
2011/65/EU
TUV
B160696048001
Halogen Free
EN 14582:2007
Electrical Characteristics
Maximum
Time To Trip
Time
Current
(Sec.)
(A)
Part
Number
Ihold
(A)
Itrip
(A)
Vmax
(Vdc)
Imax
(A)
Pd typ.
(W)
SMD2920B030TF
0.30
0.60
60
10
1.50
3.00
SMD2920B050TF
0.50
1.00
60
10
1.50
SMD2920B075TF
0.75
1.50
30
40
SMD2920B075TF/60
0.75
1.50
60
SMD2920B100TF
1.10
2.20
SMD2920B125TF
1.25
SMD2920B150TF
Resistance
Rmin
(Ω)
R1max
(Ω)
1.50
0.600
4.800
4.00
2.50
0.180
1.400
1.50
0.30
8.00
0.100
1.000
10
1.50
0.30
8.00
0.100
0.950
33
40
1.50
0.50
8.00
0.065
0.410
2.50
15
40
1.50
2.00
8.00
0.050
0.250
1.50
3.00
33
40
1.50
2.00
8.00
0.035
0.230
SMD2920B185TF
1.85
3.70
33
40
1.50
2.50
8.00
0.030
0.150
SMD2920B200TF/24
2.00
4.00
24
40
1.50
5.00
8.00
0.020
0.125
SMD2920B250TF
2.50
5.00
15
40
1.50
5.00
8.00
0.020
0.085
SMD2920B260TF
2.60
5.00
6
40
1.50
10.00
8.00
0.014
0.075
SMD2920B260TF/24
2.60
5.00
24
40
1.50
5.00
8.00
0.014
0.075
SMD2920B300TF/15
3.00
5.00
15
40
1.50
20.00
8.00
0.012
0.048
Revision:11-Oct-17
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SMD2920 SERIES
Part
Number
Ihold
(A)
Itrip
(A)
Vmax
(Vdc)
Imax
(A)
Pd typ.
(W)
SMD2920B400TF
4.00
8.00
15
40
SMD2920B500TF
5.00
10.00
12
SMD2920B500TF/16
5.00
10.00
16
Maximum
Time To Trip
Resistance
Time
(Sec.)
Current
(A)
Rmin
(Ω)
R1max
(Ω)
1.50
4.00
20.00
0.008
0.040
40
1.50
5.00
20.00
0.005
0.031
40
2.00
5.00
20.00
0.005
0.031
Note on Electrical Characteristics
■ Vocabulary
·Ihold = Hold current: maximum current device will pass without tripping in 23℃ still air.
·Itrip = Trip current: minimum current at which the device will trip in 23℃ still air.
·Vmax = Maximum voltage device can withstand without damage at rated current (Imax)
·Imax = Maximum fault current device can withstand without damage at rated voltage (Vmax)
·Pd typ. = Typical power dissipated from device when in the tripped state at 23℃ still air.
·Rmin = Minimum resistance of device in initial (un-soldered) state.
·R1max = Maximum resistance of device at 23℃ measured one hour after tripping or reflow soldering of 260℃ for 20 sec.
■ Value specified is determined by using the PWB with 0.150”*1.5oz copper traces.
■ Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
■ Specifications are subject to change without notice.
Polymeric PTC Selecting Guide
■ Determine the following operating parameters for the circuits:
·Normal operating current (Ihold)
·Maximum interrupt current (Imax)
·Maximum circuit voltage (Vmax)
·Normal operating temperature surrounding device (min℃/max℃)
■ Select the device from factor and dimension suitable for the application
■ Compare the maximum rating for Vmax and Imax of the PPTC device with the circuit in application and make sure
the circuit’s requirement does not exceed the device rating.
■ Check that PPTC device’s trip time (time-to-trip) will protect the circuit.
■ Verify that the circuit operating temperature is within the PPTC device’s normal operating temperature range.
■ Verify that performance and suitability of the chosen PPTC device in the application.
! WARNING
■ Mechanical Stress
·PPTC devices will undergo a thermal expansion during fault condition. If PPTC devices are installed or placed in an application
where the space between PPTC devices and the surrounding materials (e.g., covering materials, packaging materials, encapsulate
materials and the like) is insufficient, it will cause an inhibiting effect upon the thermal expansion. Pressing, twisting, bending and
other kinds of mechanical stress will also adversely affect the performance of the PPTC devices, and shall not be used or applied.
■ Chemical Pollutants
·Silicone-based oils, oils, solvents, gels, electrolytes, fuels, acids, and the like will adversely affect the properties of PPTC devices,
and shall not be used or applied.
■ Electronic and Thermal Effect
·PPTC devices are secondary protection devices and are used solely for sporadic, accidental over-current or over-temperature
error condition, and shall NOT be used if or when constant or repeated fault conditions (such fault conditions may be caused by,
among others, incorrect pin-connection of a connector) or over-extensive trip events may occur.
·PPTC devices are different from fuses and, when a fault condition occurs, will go into high-resistance state and do not open
circuit, in which case the voltage at such PPTC devices may reach a hazardous level.
·Operation over the maximum rating or other forms of improper use may cause failure, arcing, flame and/or other damage to
the PPTC devices.
·Conductive material contamination, such as metal particle, may induce shortage, flame or arcing.
·Due to the inductance, the operation circuits may generate a circuit voltage (Ldi/dt) above the rated voltage of PPTC devices,
which shall not be used under such circumstances.
Revision:11-Oct-17
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SMD2920 SERIES
■ General
·Customers shall evaluate and test the properties of PPTC devices independently to verify and ensure that their individual
applications will be met.
·The performance of PPTC devices will be adversely affected if they are improperly used under electronic, thermal and/or
mechanical procedures and/or conditions non-conformant to those recommended by manufacturer.
·Customers shall be responsible for determining whether it is necessary to have back-up, failsafe and/or fool-proof protection
To avoid or minimize damage that may result from extra-ordinary, irregular function or failure of PPTC devices.
·Any and all responsibilities and liabilities are disclaimed if any item under this notice of warning is not complied with.
Thermal Derating Curve
Percentage of Rated Current
200.00
150.00
100.00
50.00
0.00
-40.00
0.00
40.00
80.00
120.00
Device Ambient Temperature (℃)
Thermal Derating Chart
Recommended Hold Current (A) at Ambient Temperature (℃)
Ambient Operation Temperature
Part
Number
-40℃
-20℃
0℃
23℃
40℃
50℃
60℃
70℃
85℃
SMD2920B030TF
0.45
0.40
0.35
0.30
0.25
0.23
0.20
0.17
0.14
SMD2920B050TF
0.76
0.67
0.59
0.50
0.42
0.38
0.33
0.29
0.23
SMD2920B075TF
1.13
1.01
0.88
0.75
0.62
0.56
0.50
0.44
0.34
SMD2920B075TF/60
1.13
1.01
0.88
0.75
0.62
0.56
0.50
0.44
0.34
SMD2920B100TF
1.66
1.47
1.29
1.10
0.91
0.83
0.73
0.64
0.50
SMD2920B125TF
1.89
1.68
1.46
1.25
1.04
0.94
0.83
0.73
0.56
SMD2920B150TF
2.27
2.01
1.76
1.50
1.25
1.13
1.00
0.87
0.74
SMD2920B185TF
2.80
2.47
2.17
1.85
1.54
1.39
1.22
1.07
0.85
SMD2920B200TF/24
3.14
2.77
2.42
2.00
1.73
1.56
1.38
1.20
0.98
SMD2920B250TF
3.78
3.35
2.93
2.50
2.08
1.88
1.65
1.45
1.13
SMD2920B260TF
3.64
3.25
2.91
2.60
2.26
2.08
1.95
1.74
1.48
SMD2920B260TF/24
3.64
3.25
2.91
2.60
2.26
2.08
1.95
1.74
1.48
SMD2920B300TF/15
4.20
3.85
3.44
3.00
2.69
2.50
2.31
2.12
1.83
Revision:11-Oct-17
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SMD2920 SERIES
Ambient Operation Temperature
Part
Number
-40℃
-20℃
0℃
23℃
40℃
50℃
60℃
70℃
85℃
SMD2920B400TF
5.50
5.00
4.50
4.00
3.40
3.10
2.80
2.50
2.10
SMD2920B500TF
7.55
6.70
5.85
5.00
4.15
3.75
3.30
2.90
2.25
SMD2920B500TF/16
7.55
6.70
5.85
5.00
4.15
3.75
3.30
2.90
2.25
Average Time-Current Curve
100
A
B
C
A-SMD2920B030TF
B-SMD2920B050TF
C-SMD2920B075TF
SMD2920B075TF/60
D-SMD2920B100TF
E-SMD2920B150TF
F-SMD2920B185TF
D E
F
Time to Trip (s)
10
1
0.1
0.01
0.1
1
10
Fault Current (A)
100
100
C
A B
DE F
A-SMD2920B125TF
B-SMD2920B200TF/24
C-SMD2920B250TF
D-SMD2920B260TF
SMD2920B260TF/24
E-SMD2920B300TF/15
F-SMD2920B400TF
G-SMD2920B500TF
SMD2920B500TF/16
G
Time to Trip (s)
10
1
0.1
0.01
1
Revision:11-Oct-17
10
Fault Current (A)
100
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SMD2920 SERIES
Soldering Parameters
Critical Zone
TL to TP
tP
TP
Ramp-up
TL
tL
Temperature
TS max
TS min
Ramp-down
tS
Preheat
25
t 25℃ to Peak
Time
Profile Feature
Pb-Free Assembly
Average ramp-up rate (TS max to TP)
3℃/second max.
Preheat
-Temperature Min (TS min)
-Temperature Max (TS max)
-Time (min to max) (TS min to TS max)
150℃
200℃
60-180 seconds
Time maintained above:
-Temperature (TL)
-Time (tL)
217℃
60-150 seconds
Peak Temperature (TP)
260℃
Time within 5℃ of actual Peak Temperature (tP)
Ramp-down Rate
Time 25℃ to Peak Temperature
Storage Condition
20-40 seconds
6℃/second max.
8 minutes max.
0℃~35℃, ≤70%RH
·Recommended reflow methods: IR, vapor phase oven, hot air oven, N2 environment for lead-free
·Recommended maximum paste thickness is 0.25mm (0.010 inch)
·Device can be cleaned using standard industry methods and solvents.
Note 1: All temperature refer to topside of the package, measured on the package body surface.
Note 2: If reflow temperatures exceed the recommended profile, devices may not meet the performance
requirements.
Revision:11-Oct-17
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SMD2920 SERIES
Physical Dimensions (mm)
C
A
BK Logo
Marking
D
A
B
Marking
Part identification
E
B
C
D
E
Part
Number
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
SMD2920B030TF
6.73
7.98
4.80
5.44
0.75
1.25
0.30
2.50
0.25
2.00
SMD2920B050TF
6.73
7.98
4.80
5.44
0.55
1.05
0.30
2.50
0.25
2.00
SMD2920B075TF
6.73
7.98
4.80
5.44
0.75
1.25
0.30
2.50
0.25
2.00
SMD2920B075TF/60
6.73
7.98
4.80
5.44
0.75
1.80
0.30
2.50
0.25
2.00
SMD2920B100TF
6.73
7.98
4.80
5.44
0.55
1.00
0.30
2.50
0.25
2.00
SMD2920B125TF
6.73
7.98
4.80
5.44
0.55
1.25
0.30
2.50
0.25
2.00
SMD2920B150TF
6.73
7.98
4.80
5.44
0.50
1.25
0.30
2.50
0.25
2.00
SMD2920B185TF
6.73
7.98
4.80
5.44
0.75
1.25
0.30
2.50
0.25
2.00
SMD2920B200TF/24
6.73
7.98
4.80
5.44
0.70
1.25
0.30
2.50
0.25
2.00
SMD2920B250TF
6.73
7.98
4.80
5.44
0.75
1.25
0.30
2.50
0.25
2.00
SMD2920B260TF
6.73
7.98
4.80
5.44
0.55
1.25
0.30
2.50
0.25
2.00
SMD2920B260TF/24
6.73
7.98
4.80
5.44
0.70
1.60
0.30
2.50
0.25
2.00
SMD2920B300TF/15
6.73
7.98
4.80
5.44
0.70
1.80
0.30
2.50
0.25
2.00
SMD2920B400TF
6.73
7.98
4.80
5.44
0.80
1.60
0.30
2.50
0.25
2.00
SMD2920B500TF
6.73
7.98
4.80
5.44
0.80
1.60
0.30
2.50
0.25
2.00
SMD2920B500TF/16
6.73
7.98
4.80
5.44
0.80
1.60
0.30
2.50
0.25
2.00
Environmental Specifications
Operating / Storage temperature
-40℃ to +85℃
Maximum Device Surface Temperature in Tripped State
125℃
Passive Aging
+85℃, 1000 hours
±50% typical resistance change
Humidity Aging
+85℃, 85%R.H. 1000 hours
±50% typical resistance change
Thermal Shock
MIL-STD-202, Method 107G
+85℃/-40℃ 20 times
-50% typical resistance change
Solvent Resistance
MIL-STD-202, Method 215
No change
Vibration
MIL-STD-883C, Method 2007.1, Condition A
No change
Moisture Level Sensitivity
Level 1, J-STD-020C
Revision:11-Oct-17
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SMD2920 SERIES
Packaging Quantity and Marking
Recommended Pad Layout (mm)
5.40typ.
4.60typ.
2.00typ.
2.00typ.
Part Number
Marking
Quantity
SMD2920B030TF
030
1500
SMD2920B050TF
050
1500
SMD2920B075TF
075
1500
SMD2920B075TF/60
0760
1000
SMD2920B100TF
100
2000
SMD2920B125TF
125
2000
SMD2920B150TF
150
1500
SMD2920B185TF
185
1500
SMD2920B200TF/24
2024
1500
SMD2920B250TF
250
1500
SMD2920B260TF
260
2000
SMD2920B260TF/24
2624
1500
SMD2920B300TF/15
3015
1500
SMD2920B400TF
400
1000
SMD2920B500TF
500
1000
SMD2920B500TF/16
5016
1000
◎ 8mm tape on 7 inch reel per EIA-481(equivalent to IEC286, part 3)
Physical Specifications
Terminal Material
Solder-Plated Copper (Solder Material: Matte Tin (Sn))
Lead Solderability
Meets EIA Specification RS186-9E, ANSI/J-STD-002 Category 3.
Revision:11-Oct-17
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SMD2920 SERIES
Packaging
Tape
B030TF, B050TF
B075TF, B150TF
B185TF, B250TF
B200TF/24
B260TF/24
B300TF/15
B100TF
B125TF
B260TF
W
16.00±0.30
16.00±0.30
16.00±0.30
F
7.50±0.10
7.50±0.10
7.50±0.10
E1
1.75±0.10
1.75±0.10
1.75±0.10
E
D0
1.55±0.05
1.55±0.05
1.50±0.10
F
Dimensions (mm)
D1
1.50±0.10
1.50±0.10
1.50(MIN)
P0
4.00±0.10
4.00±0.10
4.00±0.10
P1
8.00±0.10
8.00±0.10
8.00±0.10
P2
2.00±0.10
2.00±0.10
2.00±0.10
A0
5.74±0.10
5.74±0.10
5.45±0.10
B0
8.02±0.10
8.02±0.10
7.90±0.10
T
0.30±0.10
0.30±0.10
0.30±0.05
K0
1.30±0.10
0.91±0.10
2.00±0.10
390
390
390
160
160
160
Symbol
P1
D0
D1
T
B0
P2
W
P0
K0
A0
Leader
min.
Trailer min.
Reel
C
Φ180.0±3.0
D
Φ60.0±0.5
H
19.5±1.0
W
17.0±0.2
B075TF/60
B400TF
B500TF
B500TF/16
Part Number System
SMD 2920 B
TF T /
Special Voltage Rating (Optional)
Thickness Version (Optional)
Lead-Free
Holding Current Rating
Delimiter
Device Dimensions: Length/Width (Unit: 1/100 inch)
Surface Mount Device
Revision:11-Oct-17
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