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FUSES / SICHERUNGEN
Resettable fuses
Axial leaded
PTC-Fuses
Type PFLT
Fully compatible with cur-
rent industry standards
Weldable nickel terminals
Very low internal resistance
Agency recognition:
UL, CSA, TÜV (pending)
PFLT
Typical Time to Trip at 23 ˚C
10
1
50 75 100
0.001
1
Fault current (A)
10
100
Applications
Any application that requires
extra protection at elevated am-
bient temperatures, which the
100 °C trip temperature provides,
including rechargeable battery
pack protection,cellular phones,
laptop computers
Standard Style / Standard-Ausführung
A
BF
D DC
“S” Style / «S»-Ausführung
A
F
SLIT
0.5 x 4.0
NOM.
B
D DC
Typical Part Marking
Layout may vary
Manufacturer’s
Trademark
Date Code (Last
Digit of Year and
Julian Date)
LT180
7144T
Part identification
Lot No (T=Taiwan)
Environmental Characteristics
Operating/Storage Temperature / Einsatz/Lagertemp.
Maximum Device Surface Temperature in Tripped State /
–40 °C to +85 °C
125 °C
Passive Aging / passive Alterung
Humidity Aging / Feuchtigkeitsalterung
Thermal Shock /*) Thermischer Schock
Vibration
*) MIL-STD-202F, Method 107G
+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
Test Procedures And Requirements For Model PFLT Series
Test / Test
Test Conditions / Bedingungen
Accept/Reject Criteria
Visual/Mech. / visuell/mech.
Resistance / Widerstand
Time to Trip / Trip-Zeit
Hold Current / Haltestrom
Trip Cycle Life / Trip-Zyklen
Trip Endurance / Zeit im Tripzustand
Verify dimensions and materials / Kontrolle Abmess./Mat. Per PF physical description
In still air @ 23 °C / bei ruhiger Luft
Rmin R Rmax
5 times Ihold, Vmax, 23 °C / 5xHaltestrom, Vmax, 23 °C T max. time to trip (sec.)
30 min. at Ihold / bei Haltestrom
No trip
Vmax, Imax, 100 cycles / Zyklen
No arcing or burning
Vmax, 48 hours / Stunden
No arcing or burning
34 www.schurter.com

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FUSES / SICHERUNGEN
Resettable fuses
PFLT
Type / Typ Umax Imax
Ihold
Itrip
Initial
1 Hour (R1) Post-
Max. Time
Resistance /
Trip Resistance /
to trip at 23 °C /
Tripped Power
Dissipation
PFLT.100.S
PFLT.180
PFLT.180.S
PFLT.190
PFLT.260
PFLT.300
PFLT.340
V
24
24
24
24
24
24
24
Amperes /
Ampere at 23 °C
A
Hold
Trip
100 1.0
2.5
100 1.8
3.8
100 1.8
3.8
100 1.9
4.2
100 2.6
5.2
100 3.0
6.3
100 3.4
6.8
Ohms at 23 °C / Ohms at 23 °C /
min.
0.070
0.040
0.040
0.030
0.025
0.015
0.016
max.
0.130
0.068
0.068
0.057
0.042
0.031
0.027
R1 max.
0.260
0.120
0.120
0.100
0.076
0.055
0.050
Amps / Seconds / Watts at 23 °C
max.
5 7.0
9 2.9
9 2.9
10 3.0
13 5.0
15 4.0
17 5.0
nom.
1.5
2.0
2.0
1.9
2.3
2.0
2.7
Packaging
All models packaged in bulk, 500 pieces each.
Packaged loose; optional slotted leads (.S) available for 1 A and 1.8 A ratings
Thermal Derating Chart - Ihold (Amps)
Type / Typ
PFLT.100.S
PFLT.180
PFLT.180.S
PFLT.190
PFLT.260
PFLT.300
PFLT.340
Ambient Operating Temperature
–40 ˚C
–20 ˚C
0 ˚C
1.8 1.6 1.4
3.1 2.6 2.2
3.1 2.6 2.2
3.3 2.8 2.4
4.3 3.7 3.1
5.1 4.4 3.7
5.5 4.7 4.0
23 ˚C
1.0
1.8
1.8
1.9
2.6
3.0
3.4
40 ˚C
0.8
1.3
1.3
1.4
1.9
2.3
2.6
50 ˚C
0.7
1.1
1.1
1.2
1.6
1.9
2.2
60 ˚C
0.6
0.9
0.9
1.1
1.4
1.6
1.9
70 ˚C
0.4
0.6
0.6
0.7
1.1
1.2
1.5
85 ˚C
0.2
0.2
0.2
0.4
0.6
0.6
0.8
Dimensions
Type / Typ
PFLT.100S
PFLT.180
PFLT.180S
PFLT.190
PFLT.260
PFLT.300
PFLT.340
A
min. max.
20.9 23.1
24.0 26.0
24.0 26.0
21.3 23.4
24.0 26.0
28.4 31.8
24.0 26.0
B
min. max.
4.9 5.2
4.9 5.2
4.9 5.2
10.2 11.0
10.8 11.9
13.0 13.5
14.8 15.9
C
min. max.
0.6 1.0
0.6 1.0
0.6 1.0
0.5 1.1
0.6 1.0
0.5 1.1
0.6 1.0
D
min. max.
4.1 5.5
4.1 5.5
4.1 5.5
5.0 7.6
5.0 7.0
6.3 8.9
4.0 5.0
F
min. max.
3.9 4.1
3.9 4.1
3.9 4.1
4.8 5.4
5.9 6.1
6.0 6.6
5.9 6.1
Package style
S
Std.
S
Std.
Std.
Std.
Std.
Dimensions = mm
How To Order
PTC-Fuse
PF LT . xxx . x
Style
LT = Low temperature axial leaded
“strap” component
Hold Current, Ihold
100-340 (1.00 A - 3.40 A)
Slotted lead option
www.schurter.com 35