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Schurter, Inc. Phone 707-778-6311 Fax 707- 778-6401 E-mail info@schurterinc.com Website http://www.schurterinc.com
119
PFST Polymeric PTC Resettable Fuse - Strap
0.01
0.001
1
10
100
0.1
1
10
Fault Current (Amps)
T
ime
to
T
rip
(Seconds)
PFST120PFST150
PFST350PFST420
PFST175PFST200
Typical Time to Trip at 23C
NEW
Fully compatible with current
industry standards
Weldable nickel terminals
Very low internal resistance
Applications: Rechargable Battery Pack
Protection
Approvals*:
UL
recognition, file #E172175
(1.2A - 1.75A/15V; 2A - 3.5A/30V)
CSA
acceptance, file #CA702083
(1.2A - 1.75A/15V; 2A - 4.2A/30V)
TV
certification, file #R9872200
* rated amps at hold current Ihold
MANUFACTURER'S
TRADEMARK
PART
IDENTIFICATION
ST120
F
B
D
E
A
C
Standard Package
F
B
D
E
A
C
SLIT
0.5 X 4.0
NOMINAL
"S" Package
Typical Part Marking
Represents total content. Layout may vary.
ST350
Technical Data
Operating/Storage Temperature
-40°C to +85°C
Maximum Device Surface Temperature
in Tripped State
125°C
Passive Aging
+85°C, 1000 hours
±5% typical resistance change
Humidity Aging
+85°C, 85% R.H. 1000 hours
±5% typical resistance change
Thermal Shock
+125°C/-40°C 10 times
±10% typical resistance change
Vibration
MIL-STD-883C, Method 2007.1,
No change
Condition A
Test Procedures And Requirements
Test
Test Conditions
Accept/Reject Criteria
Visual/Mech.
Verify dimensions and materials
Per PF physical description
Resistance
In still air @ 23°C
Rmin
≤ R ≤ Rma
Time to Trip
At specified current, max. 23°C
T
≤ max. time to trip (seconds)
Hold Current
30 min. at Ihold
No trip
Trip Cycle Life
Vmax, Imax, 100 cycles
No arcing or burning
Trip Endurance
Vmax, 48 hours
No arcing or burning
A
B
C
D
F
Model
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Material
PFST.120
19.9
22.1
4.9
5.2
0.6
1.0
5.5
7.5
3.9
4.1
Nickel
PFST.120S
19.9
22.1
4.9
5.2
0.6
1.0
5.5
7.5
3.9
4.1
Nickel
PFST.150
21.3
23.4
10.2
11.0
0.5
1.1
4.1
5.5
4.8
5.4
Nickel
PFST.175
20.9
23.1
4.9
5.2
0.6
1.0
4.1
5.5
3.9
4.1
Nickel
PFST.175S
20.9
23.1
4.9
5.2
0.6
1.0
4.1
5.5
3.9
4.1
Nickel
PFST.200
21.3
23.4
10.2
11.0
0.5
1.1
5.0
7.6
4.8
5.4
Nickel
PFST.350
28.4
31.8
13.0
13.5
0.5
1.1
6.3
8.9
6.0
6.6
Nickel
PFST.420
30.6
32.4
12.9
13.6
0.5
1.1
5.0
7.5
6.0
6.7
Nickel
Product Dimensions
DIMENSIONS = MM