PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: ASMD125F

DOCUMENT: SCD26581

REV LETTER: F

REV DATE: JULY 26, 2016

PAGE NO.: 1 OF 2

© 2016 Littelfuse,Inc.

littelfuse.com

Specifications are subject to change without notice.

Revised July 26, 2016

Specification Status: Released

Maximum Electrical Ratings

Operating Voltage / Interrupt Current

Marking:

Notes:

1. All metal surfaces are tin plated.

2. Devices cannot be wave soldered.

3. Drawing not to scale.

H

D

A

E

B

C

G

F

TABLE I. DIMENSIONS:

A

B

C

D

E

F

G

H

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

mm: 6.73

7.98

--

3.0

4.8

5.44

0.56

0.71

0.56

0.71

2.16

2.41

0.66

1.37

0.43

in: (0.265) (0.314)

--

(0.118) (0.19) (0.214) (0.022) (0.028) (0.022

)

(0.028) (0.085) (0.095) (0.026) (0.054) (0.017)

TABLE II. PERFORMANCE RATINGS:

CURRENT RATINGS**

TIME TO

TRIP**

RESISTANCE

VALUES

TRIPPED-STATE

POWER

DISSIPATION**

AMPS

AT 0°C

AMPS

AT 20°C

AMPS

AT 60°C

SECONDS AT

25°C, 5.2A

OHMS

AT 25°C

WATTS AT

25°C

HOLD

TRIP

HOLD

TRIP

HOLD

TRIP

MAX

MIN

MAX*

TYP.

1.23

2.90

1.04

2.46

0.70

1.65

20

0.057

0.250

1.1

* Maximum resistance is measured both 1-hour post reflow and 1 hour post trip.

** Va

lues specified were determined using PCB’s with 0.070” x 1.5-ounce copper traces.

Reference Documents:

PS300, PS400

Precedence:

This specification takes precedence over documents referenced herein.

Effectivity:

Reference documents shall be the issue in effect on the date of invitation for bid.

CAUTION:

Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.

Materials Information

ROHS Compliant

ELV Compliant

Pb-Free

Halogen Free*

* Halogen Free refers to: Br

≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm

HF