*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

CMF-SD Series - Telecom CPTC Resettable Fuses

Induction

Rated

Resistance

Time to Trip

Voltage

Rated

Resistance

Matching

Hold

Trip

Imax @

@ Imax/

Model

Withstand

Voltage

(RN)

In Housing

Current

Current

230 VAC

230 VAC

VAC

Volts

Ohms

Tolerance

Ohms

Amps @ 25 °C Amps @ 25 °C

Amps

Seconds

CMF-SD25

600

230

25

±20 %

± 0.5

0.130

0.260

2.8

< 0.3

CMF-SD25-10

600

230

25

±10 %

± 0.5

0.130

0.260

2.8

< 0.3

CMF-SD35

600

230

35

±20 %

± 0.5

0.100

0.200

3

< 0.2

CMF-SD35-10

600

230

35

±10 %

± 0.5

0.100

0.200

3

< 0.2

CMF-SD35A

600

230

35

±20 %

± 0.5

0.100

0.200

2.5

< 0.2

CMF-SD35A-10

600

230

35

±10 %

± 0.5

0.100

0.200

2.5

< 0.2

CMF-SD50

600

230

50

±20 %

± 0.5

0.090

0.190

3

< 0.1

CMF-SD50-10

600

230

50

±10 %

± 0.5

0.090

0.190

3

< 0.1

CMF-SD50A

600

230

50

±20 %

± 0.5

0.090

0.190

3

< 0.1

CMF-SD50A-10

600

230

50

±10 %

± 0.5

0.090

0.190

3

< 0.1

Electrical Characteristics

Features

■

Two resistance-matched PTCs in a

ceramic housing

■

Aids compliance with:

- ITU-T K.20/21/45

- Telcordia GR-1089-CORE

- UL 60950, 3rd Ed.

■

Narrow resistance tolerance

■

RoHS compliant*

Applications

Used as a secondary overcurrent protection

device in:

■

Customer Premise Equipment (CPE)

■

Central Office (CO)

■

Access equipment

How to Order

CMF - SD 35 A -10 - 2

Product Designator

Style

SD = Surface Mount Dual Pkg.

Rated Resistance (RN)

25, 35, 50 (25, 35, 50 Ohms)

Reduced Footprint and Height Option

Resistance Tolerance Option

Blank = Standard (20 %)

-10 = 10 %

Packaging Options

- 2 = Tape & Reel

Typical Part Marking

Represents total content. Layout may vary.

Product Dimensions

Recommended Pad Layout

Packaging options:

TAPE & REEL: CMF-SD25, CMF-SD35 & CMF-SD50

= 400 pcs. per reel;

CMF-SD35A & CMF-SD50A = 500 pcs. per reel

MM

(INCHES)

DIMENSIONS =

A

B

F

E

D

C

B

1

2

3

4

A

F

E

D

C

H

G

356G

MANUFACTURER'S

TRADEMARK

PART

IDENTIFICATION:

25 = CMF-SD25

35 = CMF-SD35

50 = CMF-SD50

35A = CMF-SD35A

50A = CMF-SD50A

25K = CMF-SD25-10

35K = CMF-SD35-10

50K = CMF-SD50-10

35AK = CMF-SD35A-10

50AK = CMF-SD50A-10

YEAR CODE:

6 = 2006

BI-WEEKLY

DATE CODE:

WEEK 13-14 = G

CMF-SD25

CMF-SD35

CMFSD35A

Dim.

CMF-SD50

CMF-SD50A

A

B

C

D

E

F

9.00

(.354)

MAX.

10.80

(.425)

MAX.

10.20

(.402)

MAX.

4.88 - 5.28

(.192 - .208)

2.41 - 2.61

(.095 - .103)

7.15

(.281)

MAX.

8.50

(.335)

MAX.

8.10

(.319)

MAX.

3.25 - 3.65

(.128 - .144)

2.41 - 2.61

(.095 - .103)

0.5

(.020)

CMF-SD25/

CMF-SD35/

CMF-SD35A/

Dim.

CMF-SD50

CMF-SD50A

A

B

C

D

E

F

G

H

10.0

(.394)

8.80

(.346)

3.20

(.126)

2.00

(.079)

2.60

(.102)

8.00

(.315)

7.05

(.278)

2.75

(.108)

2.00

(.079)

2.51

(.099)

5.00

(.197)

7.60

(.299)

3.45

(.136)

5.95

(.234)

10.0

(.394)

8.15

(.321)

1

2

3

4

MAX.

0.5

(.020)

MAX.