PFRT.008.250.U datasheet(1/2 Pages) SCHURTER

Part #	PFRT.008.250.U

Description	Wire leaded PTC-Fuses

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Manufacturer	SCHURTER [Schurter Inc.]

Direct Link	http://www.schurterinc.com

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FUSES / SICHERUNGEN

PFRT

Resettable fuses

www.schurter.com

21

Typical Time to Trip at 23 ˚C

Dimensions

Applications

Used as a secondary overcur-

rent protection device in:

• Customer Premise Equipment

(CPE)

• Central Office (CO)

• Subscriber Line Interface

Cards (SLIC)

Test Procedures And Requirements For Model PFRT Series

Test / Test

Test Conditions / Bedingungen

Accept/Reject Criteria

Visual/Mech. / visuell/mech.

Verify dimensions and materials / Kontrolle Abmess./Mat. Per MF physical description

Resistance / Widerstand

In still air @ 23 °C / bei ruhiger Luft 23 °C

Rmin

≤ R ≤ Rmax

Time to Trip / Trip-Zeit

5 times Ihold, Vmax 23 °C / 5-facher Haltestrom

T

≤ max. time to trip

(sec.)

Hold Current / Haltestrom

30 min. at Ihold / bei Haltestrom

No trip

Trip Cycle Life / Trip-Zyklen

Vmax, Imax, 100 cycles / Zyklen

No arcing or burning

Trip Endurance / Zeit im Tripzustand

Vmax, 48 hours / Stunden

No arcing or burning

Environmental Characteristics

Operating/Storage Temperature / Einsatz/Lagertemp.

-45 °C to +85 °C

Maximum Device Surface Temperature in Tripped State /

125 °C

Passive Aging / passive Alterung

+85 °C, 1000 hours / Std.

± 2% typ. resist. change

+60 °C, 1000 hours / Std.

± 3% typ. resist. change

Humidity Aging / Feuchtigkeitsalterung

+85 °C, 85% R.H. 500 hours / Std. ± 3% typ. resist. change

Thermal Shock / Thermischer Schock

MIL-STD-202F, Method 107G

±10% typ. resist. change

+125 °C/–55 °C, 10 times / Zyklen ±15% typ. resist. change

Solvent Resistance / Lösungsmittel-Beständigkeit

MIL-STD-202, Method 215B

No change

Lead Solerability / Lötbarkeit

ANSI/J-STD-002

Flammability / Entflammbarkeit

IEC 695-2-2

No Flame for 60 sec.

Vibration

MIL-STD-883C, Method 2007.1,

No change

Condition A

Typical Part Marking

Layout may vary

Manufacturer’s Trademark

Restance bin

Lot No. (T = Taiwan, S = Xiamen)

Part identification

Date code (First digit = Last digit of

year; next three digits = day of year)

50

75

100

Fault current (A)

100

10

1

0.10

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

PFRT.018.250.U

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

A

E

B

C

D

Wire leaded

PTC-Fuses

Type PFRT

High voltage surge

capabilities

Compliance to ITU

K.20/K.21 specifications

Agency recognition:

UL, CSA, TÜV

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