FUSES / SICHERUNGEN
Resettable fuses
PFST
Typical Time to Trip at 23 ˚C
PFS
T
PFS .120
T
PFS .150
T.
PFS 175
T.2
00
PFS
T.3
PFS 50
T.4
20
Axial leaded
PTC-Fuses
Type PFST
Fully compatible with current industry standards
10
Time to trip (s)
Time to Trip (Seconds)
Weldable nickel terminals
Very low internal resistance
Available in lead-free
version
Agency recognition:
UL, CSA, TÜV
1
0.1
0.01
0.001
50
75
100
1
10
100
Fault current (A)
Standard Style / Standard-Ausführung
“S” Style
A
A
F
B
D
E
0.5 X 4.0
F
B
C
D
E
C
Terminal material: Quarter hard nickel
Applications
Typical Part Marking
• Rechargable battery pack
protection
• Cellular phones
Layout may vary ern
Part identification
Manufacturer’s
Trademark /
Date Code (Last
Digit of Year and
Julian Date)
Environmental Characteristics
Operating/Storage Temperature / Einsatz/Lagertemp.
Maximum Device Surface Temperature in Tripped State /
Passive Aging / passive Alterung
Humidity Aging / Feuchtigkeitsalterung
Thermal Shock *) Thermischer Schock
Vibration
ST120
6180T
–40 °C to +85 °C
125°C
+85 °C, 1000 hours / Std.
±5% typ. resist. change
+85 °C, 85% R.H. 1000 hours / Std. ±5% typ. resist. change
+85 °C/–40 °C 10 times / Zyklen
±10% typ. resist. change
MIL-STD-883C, Method 2007.1,
No change
Condition A
*) MIL-STD-202F, Method 107G
Test Procedures And Requirements For Model PFST Series
Test / Test
Test Conditions / Bedingungen
Visual/Mech. / visuell/mech.
Verify dimensions and materials / Kontrolle Abmess./Mat.
Resistance / Widerstand
In still air @ 23 °C / bei ruhiger Luft
Time to Trip / Trip-Zeit
5 times Ihold, Vmax, 23 °C / unter spez. Strom
Hold Current / Haltestrom
30 min. at Ihold / bei Haltestrom
Trip Cycle Life / Trip-Zyklen
Vmax, Imax, 100 cycles / Zyklen
Trip Endurance / Zeit im Tripzustand Vmax, 48 hours / Stunden
32
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Accept/Reject Criteria
Per PF physical description
Rmin ≤ R ≤ Rmax
T ≤ max. time to trip (sec.)
No trip
No arcing or burning
No arcing or burning
Lot No (T=Taiwan)
FUSES / SICHERUNGEN
Resettable fuses
PFST
Electrical Characteristics
Type / Typ
Vmax
PFST.120
PFST.120.S
PFST.150
PFST.175
PFST.175.S
PFST.200
PFST.350
PFST.420
Imax
V
15
15
15
15
15
30
30
30
A
100
100
100
100
100
100
100
100
Ihold
Itrip
Amperes /
Ampere at 23 °C
Hold
Trip
1.20
2.7
1.20
2.7
1.50
3.00
1.75
3.8
1.75
3.8
2.00
4.4
3.50
6.3
4.20
7.6
Initial
Resistance /
1 Hour (R1) PostTrip Resistance /
Max. Time
to trip at 23 °C /
Tripped Power
Dissipation /
Ohms at 23 °C /
Ohms at 23 °C /
Seconds at 23 °C/
Watts at 23 °C /
min.
0.085
0.085
0.05
0.05
0.05
0.03
0.017
0.012
max.
0.160
0.160
0.09
0.09
0.09
0.06
0.031
0.024
R1 max.
0.22
0.22
0.11
0.120
0.120
0.080
0.040
0.040
5.0
5.0
5.0
4.0
4.0
4.0
3.0*
6.0*
1.2
1.2
1.30
1.5
1.5
1.90
2.50
2.90
Packaging
All models packaged in bulk, 500 pieces each.
Packaged loose; optional slotted leads (.S) available for 1.20 A and 1.75 A ratings
Dimensions
Type / Typ
PFST.120
PFST.120.S
PFST.150
PFST.175
PFST.175.S
PFST.200
PFST.350
PFST.420
A
min.
19.9
19.9
20.9
20.9
20.9
21.3
28.4
30.6
B
max.
22.1
22.1
23.1
23.1
23.1
23.4
31.8
32.4
min.
4.9
4.9
10.2
4.9
4.9
10.2
13.0
13.0
C
max.
5.2
5.2
11.8
5.2
5.2
11.0
13.5
13.5
min.
0.6
0.6
0.6
0.6
0.6
0.5
0.5
0.5
D
max.
1.0
1.0
1.0
1.0
1.0
1.1
1.1
1.1
mn.
5.5
5.5
4.1
4.1
4.1
5.0
6.3
5.0
F
max.
7.5
7.5
5.5
5.5
5.5
7.6
8.9
7.5
min.
3.9
3.9
4.8
3.9
3.9
4.8
6.0
6.0
Material
max.
4.1
4.1
5.5
4.1
4.1
5.4
6.6
6.7
nickel
nickel
nickel
nickel
nickel
nickel
nickel
nickel
Dimension
How To Order
PF
ST
. xxx . x
PTC-Fuse
Style
ST = Axial Leaded “Strap” Component
Hold Current, Ihold
120-420 (1.20 mA - 4.20 A)
Slotted Lead Option
Thermal Derating Chart - Ihold (Amps)
Type / Typ
PFST.120
PFST.120.S
PFST.150
PFST.175
PFST.175.S
PFST.200
PFST.350
PFST.420
Ambient Operating Temperature
–40 ˚C
–20 ˚C
0 ˚C
1.9
1.7
1.5
1.9
1.7
1.5
2.2
2.0
1.8
2.5
2.3
2.0
2.5
2.3
2.0
3.2
2.8
2.5
5.4
4.8
4.3
6.4
5.7
5.1
23 ˚C
1.2
1.2
1.5
1.7
1.7
2.0
3.5
4.2
40 ˚C
1.0
1.0
1.3
1.5
1.5
1.7
3.0
3.6
50 ˚C
0.9
0.9
1.1
1.3
1.3
1.6
2.8
3.3
60 ˚C
0.8
0.8
1.0
1.2
1.2
1.4
2.5
3.0
70 ˚C
0.7
0.7
0.9
1.1
1.1
1.2
2.2
2.6
85 ˚C
0.5
0.5
0.7
0.9
0.9
0.9
1.7
2.1
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33
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