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Schurter, Inc. Phone 707-778-6311 Fax 707-778-6401 E-mail info@schurterinc.com Website http://www.schurterinc.com
120
PFST Technical Data, continued
How To Order
PF ST . 120 . S
Product
Designator
Style
ST = Axial Leaded “Strap” Component
Hold Current, Ihold
120-420 (1.20 Amps - 4.20 Amps)
Slotted Lead Option
(.120S and .175S only)
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature
Model
-40C
-20C
0C
23C
40C
50C
60C
70C
85C
PFST.120
1.9
1.7
1.5
1.2
1.0
0.9
0.8
0.7
0.5
PFST.120S
1.9
1.7
1.5
1.2
1.0
0.9
0.8
0.7
0.5
PFST.150
2.2
2.0
1.8
1.5
1.3
1.1
1.0
0.9
0.7
PFST.175
2.5
2.3
2.0
1.7
1.5
1.3
1.2
1.1
0.9
PFST.175S
2.5
2.3
2.0
1.7
1.5
1.3
1.2
1.1
0.9
PFST.200
3.2
2.8
2.5
2.0
1.7
1.6
1.4
1.2
0.9
PFST.350
5.4
4.8
4.3
3.5
3.0
2.8
2.5
2.2
1.7
PFST.420
6.4
5.7
5.1
4.2
3.6
3.3
3.0
2.6
2.1
Schurter’s resettable fuses cross to many like products already on the market.
See our online cross list at www.schurterinc.com/cross.htm
Electrical Characteristics
*Tested at 20.0 Amps
1 Hour (R1)
Max. Time
Tripped
Ihold
Itrip
Initial
Post-Trip
To Trip
Power
Resistance
at 5*Ih
Dissipation
Model
Amperes
Ohms
Seconds
Watts
V max.
I max.
at 23°C
Volts
Amps
Hold
Trip
Min.
Max.
PFST.120
15
100
1.20
2.7
0.085
0.160
0.22
5.0
1.2
PFST.120S
15
100
1.20
2.7
0.085
0.160
0.22
5.0
1.2
PFST.150
15
100
1.50
3.00
0.05
0.09
0.11
5.0
1.30
PFST.175
15
100
1.75
3.8
0.05
0.09
0.120
4.0
1.5
PFST.175S
15
100
1.75
3.8
0.05
0.09
0.120
4.0
1.5
PFST.200
30
100
2.00
4.4
0.03
0.06
0.080
4.0
1.90
PFST.350
30
100
3.50
6.3
0.017
0.031
0.040
3.0*
2.50
PFST.420
30
100
4.20
7.6
0.012
0.024
0.040
6.0*
2.90
All models packaged loose.
Optional slotted leads (.S) available for 1.20 A and 1.75 A ratings