1
Electrical Characteristics(23)
Resistance Tolerance
Hold
Current
Trip
Current
Rated
Voltage
Maximum
Current
Typical
Power RMIN RMAX R1MAX
Part
Number Fig
IH,A IT,A V MAX, Vdc IMAX, A Pd, W ΩΩΩ
FSR120 1 1.2 2.7 15 100 1.2 0.085 0.160 0.220
FSR120S 2 1.2 2.7 15 100 1.2 0.085 0.160 0.220
FSR175 1 1.75 3.8 15 100 1.5 0.050 0.090 0.120
FSR175S 2 1.75 3.8 15 100 1.5 0.050 0.090 0.120
FSR200 1 2.0 4.4 30 100 1.9 0.030 0.060 0.100
FSR350 1 3.5 6.3 30 100 2.5 0.017 0.031 0.050
FSR420 1 4.2 7.6 30 100 2.9 0.012 0.024 0.040
IH=Hold current-maximum current at which the device will not trip at 23still air.
IT=Trip current-minimum current at which the device will always trip at 23still air.
V MAX=Maximum voltage device can withstand without damage at its rated current.
IMAX= Maximum fault current device can withstand without damage at rated voltage (V max).
Pd=Maximum power dissipated from device when in the tripped state in 23still air environment.
RMIN=Minimum device resistance at 23.
R1MAX=Maximum device resistance at 23, 1 hour after tripping.
Physical specifications:
Lead material:0.13mm nominal thickness, quarter-hard nickel.
Insulating material:Polyester tape.
Application:
Rechargeable battery packs
Lithium cell and battery packs
Product Features:
Low profile, Solid state
Operation Current: 1.2A~4.2 A
Maximum Voltage: 15V& 30V
Temperature Range: -40to 85
Agency Approvals:UL(E211981),
C-UL(pending)
TÜV(R3-50004084)
Axial Leaded PTC FSR Series FUZETEC
DB LECTRO Inc., 3600-I, boulevard Matte, Brossard, QC J4Y 2Z2
2
FSR Product Dimensions (Millimeters)
ABCDFPart
Number Fig Min Max Min Max Min Max Min Max Min Max
FSR120 1 19.9 22.1 4.9 5.2 0.6 1.0 5.5 7.5 3.9 4.1
FSR120S 2 19.9 22.1 4.9 5.2 0.6 1.0 5.5 7.5 3.9 4.1
FSR175 1 20.9 23.1 4.9 5.2 0.6 1.0 4.1 5.5 3.9 4.1
FSR175S 2 20.9 23.1 4.9 5.2 0.6 1.0 4.1 5.5 3.9 4.1
FSR200 1 21.3 23.4 10.2 11.0 0.5 1.1 5.0 7.6 4.8 5.4
FSR350 1 28.4 31.8 13.0 13.5 0.5 1.1 6.3 8.9 6.0 6.6
FSR420 1 30.6 32.4 12.9 13.6 0.5 1.1 5.0 7.5 6.0 6.7
Thermal Derating Curve
Thermal Derating Curve - FSR Series
0%
50%
100%
150%
200%
-40 -20 0 20 40 60 80
Ambient Temperature (C)
Percent of Rated Hold and Trip
Current
Axial Leaded PTC FSR Series FUZETEC
DB LECTRO Inc., 3600-I, boulevard Matte, Brossard, QC J4Y 2Z2
3
Typical Time-To-Trip at 23
A B C D E
0.001
0.01
0.1
1
10
100
1 10 100
Fault Current (A)
Time-to-trip (S)
Part Numbering System Part Marking System
F S R s
S=slitted lead
Current rating
Example
Standard Package
P/N Pcs /Bag P/N Pcs /Bag
FSR120 2K FSR200 2K
FSR120S 2K FSR350 2K
FSR175 2K FSR420 2K
FSR175S 2K
A =FSR120/FSR120S
B =FSR175/FSR175S
C =FSR200
D =FSR350
E =FSR420
F Fuzetec Logo
SR
Part Identification
Product Family
Date Code/Lot Number
F SR120
09AB
Axial Leaded PTC FSR Series FUZETEC
DB LECTRO Inc., 3600-I, boulevard Matte, Brossard, QC J4Y 2Z2
