PFRT Datasheet, PDF (1/2 Pages) Schurter Inc. – Wire leaded PTC-Fuses

FUSES / SICHERUNGEN
Resettable fuses
Wire leaded
PTC-Fuses
Type PFRT
High voltage surge
capabilities
Compliance to ITU
K.20/K.21 specifications
Agency recognition:
UL, CSA, TÜV
50
75 100
PFRT
Typical Time to Trip at 23 ˚C
100
100
10
1
PFRT.018.250.U
0.10
PFRT.014.250 & PFRT.014.250.U
PFRT.012.250 & PFRT.012.250.U
PFRT.011.250.U
PFRT.008.250 & PFRT.008.250.U
0.01
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
Fault current (A)
Dimensions
A
E
B
D
C
Applications
Used as a secondary overcur-
rent protection device in:
• Customer Premise Equipment
(CPE)
• Central Office (CO)
• Subscriber Line Interface
Cards (SLIC)
Typical Part Marking
Layout may vary
Part identification
Date code (First digit = Last digit of
year; next three digits = day of year)
Manufacturer’s Trademark
Restance bin
Lot No. (T = Taiwan, S = Xiamen)
Environmental Characteristics
Operating/Storage Temperature / Einsatz/Lagertemp.
Maximum Device Surface Temperature in Tripped State /
-45 °C to +85 °C
125 °C
Passive Aging / passive Alterung
Humidity Aging / Feuchtigkeitsalterung
Thermal Shock / Thermischer Schock
Solvent Resistance / Lösungsmittel-Beständigkeit
Lead Solerability / Lötbarkeit
Flammability / Entflammbarkeit
Vibration
+85 °C, 1000 hours / Std.
± 2% typ. resist. change
+60 °C, 1000 hours / Std.
± 3% typ. resist. change
+85 °C, 85% R.H. 500 hours / Std. ± 3% typ. resist. change
MIL-STD-202F, Method 107G
±10% typ. resist. change
+125 °C/–55 °C, 10 times / Zyklen ±15% typ. resist. change
MIL-STD-202, Method 215B
No change
ANSI/J-STD-002
IEC 695-2-2
No Flame for 60 sec.
MIL-STD-883C, Method 2007.1, No change
Condition A
Test Procedures And Requirements For Model PFRT 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 MF physical description
In still air @ 23 °C / bei ruhiger Luft 23 °C
R_min ≤ R ≤ R_max
5 times Ihold, Vmax 23 °C / 5-facher Haltestrom
T ≤ max. time to trip (sec.)
30 min. at Ihold / bei Haltestrom
No trip
V_max, I_max, 100 cycles / Zyklen
No arcing or burning
Vmax, 48 hours / Stunden
No arcing or burning
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