PFMT Datasheet, PDF (1/2 Pages) Schurter Inc. – Surface Mount PTC-Fuses

FUSES / SICHERUNGEN
Resettable fuses
Surface Mount
PTC-Fuses
Type PFMT
5,4 x 8,5 mm
High voltage surge
capabilities
Compliance to ITU
K.20/K.21 specifications
Packaged per EIA 486-B
Agency recognition:
UL, CSA, TÜV
50
75 100
PFMT
Typical Time to Trip at 23 ˚C
20
PFMT.013.250.C.2 ^{PFMT.013.250.A.2}
PFMT.013.250.2
10
PFMT.013.250.B.2
1
0.1
0.01
0.1
1
5
Fault current (A)
Solder pad layouts
1.8
(.071)
1.8
(.071)
Dimensions
C
Side View
B
C
4.6
(.181)
9.7
(.382)
4.6
(.181)
Applications
Used as a secondary overcurent
protection device in:
• Customer Premise Equipment
(CPE)
• Central Office (CO)
• Subscriber Line Interface
Cards (SLIC)
End View /
Endansicht
D
A
E
End View /
Endansicht
Typical Part Marking
Layout may vary
Manufacturer’s
Trademark
Part identification
Resistance Bin
Date code week 1 of 2000 = 0A (year and week)
week 27 of 2000 = A0 (week and year)
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 PFMT 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
Solderability / Lötbarkeit
Verify dimensions and materials / Kontrolle Abmess./Mat. Per MF physical description
In still air @ 23°C / bei ruhiger Luft 23 °C
Rmin ≤ R ≤ Rmax
At specified current, Vmax 23 °C / Bei entspr. Strom
T ≤ max. time to trip (sec.)
30 min. at Ihold / bei Haltestrom
No trip / Keine Auslösung
V_max, I_max, 100 cycles / Zyklen
No arcing or burning
Vmax, 48 hours / Stunden
No arcing or burning
MIL-STD-202F, Method 208F / Methode 208F
95% min. coverage
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