Tyco / Electronics

Raychem Circuit Protection

308 Constitution Drive

Menlo Park, CA 94025-1164

Phone: 800-227-4856

Fax: 800-227-4866

PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: SMD185F

DOCUMENT: SCD 25659

PCN: 748040

REV LETTER: C

REV DATE: MARCH 28, 2005

PAGE NO.: 1 OF 1

Specification Status: Released

Maximum Electrical Ratings

Current

: 40A MAX

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 20°C

AMPS

AT 60°C

SECONDS AT

20°C, 8.0A

OHMS

AT 20°C

WATTS AT

20°C

HOLD

TRIP

HOLD

TRIP

HOLD

TRIP

MAX

MIN

MAX*

MAX

2.20

4.40

1.85

3.60

1.31

2.62

5.0

0.065

0.165

1.5

* Maximum resistance is measured 24 hours after reflow.

** Values were determined using PCB’s with 70 mil X 2 ounce copper traces.

Agency Recognition:

UL, CSA, TÜV

Reference Documents:

PS300, E.N. SMD 1.0x

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

© 2005 Tyco Electronics Corporation. All rights reserved.