PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: ASMD185F

DOCUMENT: SCD27574

REV LETTER: B

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 Rating

Interrupt Current: 40A

Marking:

Notes:

1. All metal surfaces are tin plated.

2. Devices cannot be wave soldered.

3. Drawing not to scale.

F

G

B

C

E

A

H

D

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:

8.0

9.4

--

3.0

5.99

6.71

0.56

0.71

0.56

0.71

3.68

3.94

0.66

1.37

0.43

in*: (0.315) (0.370)

--

(0.118) (0.236) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (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 25°C

AMPS

AT 60°C

SECONDS AT

25°C, 9.25A

OHMS

AT 25°C

WATTS AT

25°C

HOLD

TRIP

HOLD

TRIP

HOLD

TRIP

MAX

MIN

MAX*

MAX

2.30

4.60

1.85

3.70

1.30

2.60

11.3

0.032

0.126

1.5

* Maximum resistance is measured 1 hour after reflow.

** Values were determined using PCB’s with 100 mil X 2 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