CMF-SD Bourns, Inc., CMF-SD Datasheet

CMF-SD

Manufacturer Part Number

CMF-SD

Description

Cmf-sd Series - Telecom Cptc Resettable Fuses

Manufacturer

Bourns, Inc.

Datasheet

1.CMF-SD.pdf (3 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMF-SD25-10-2

Manufacturer:

BOURNS

Quantity:

380

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMF-SD35-2

Manufacturer:

JAE

Quantity:

2 900

Company:

H&T Electronics

Part Number:

CMF-SD50-2

Quantity:

2 400

Company:

Meier Automation Equipment Co., Limited

Part Number:

CMF-SD50A-2

Manufacturer:

BOURNS/伯恩斯

Quantity:

20 000

Company:

H&T Electronics

Part Number:

CMF-SD50A-2

Quantity:

239 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMF-SDP05-2

Manufacturer:

BOURNS

Quantity:

65 556

Company:

Meier Automation Equipment Co., Limited

Part Number:

CMF-SDP05-2

Manufacturer:

BOURNS/伯恩斯

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMF-SDP07-2

Manufacturer:

Quantity:

2 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMF-SDP10-2

Manufacturer:

BOURNS

Quantity:

14 000

Company:

H&T Electronics

Part Number:

CMF-SDP50A-2

Quantity:

239 000

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Download datasheet (327Kb)

35AK = CMF-SD35A-10

50AK = CMF-SD50A-10

Represents total content. Layout may vary.

*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.

Test

Mains Power Contact - ITU-T K.20, K.21 ....None................230 V rms, 10 ohms, 15 Min. ......................................................(Ri-Rf) / Ri < ±10 %

Power Induction - ITU-T K.20, K.21..............None................600V rms, 600 ohms, 0.2 seconds, 10 cycles, every 1 Min. ......(Ri-Rf) / Ri < ±10 %

Power Induction - ITU-T K.20, K.21..............GDT ................600 V rms, 600 ohms, 1 second, 10 cycles, every 1 Min. ..........(Ri-Rf) / Ri < ±10 %

Power Induction - ITU-T K.20, K.21..............GDT ................600 V rms, 200 ohms, 1 second, 10 cycles, every 1 Min. ..........(Ri-Rf) / Ri < ±10 %

Lightning Surge - ITU-T K.20, K.21 ......................................10/700 µs, 25 ohms, 1.0 kV, 10 Tests, every 1 Min. ..................(Ri-Rf) / Ri < ±10 %

Lightning Surge......................................................................10/1000 µs, 40 ohms, 1.0 kV, 30 Tests, every 3 Min. ................(Ri-Rf) / Ri < ±10 %

Ri = R initial

Rf = R final

Electrical Characteristics

Typical Part Marking

CMF-SD25

CMF-SD25-10

CMF-SD35

CMF-SD35-10

CMF-SD35A

CMF-SD35A-10

CMF-SD50

CMF-SD50-10

CMF-SD50A

CMF-SD50A-10

25K = CMF-SD25-10

35K = CMF-SD35-10

50K = CMF-SD50-10

35A = CMF-SD35A

50A = CMF-SD50A

Test Procedures And Requirements For Model CMF-SD Series

IDENTIFICATION:

Model

25 = CMF-SD25

35 = CMF-SD35

50 = CMF-SD50

PART

356G

Withstand

Induction

Voltage

VAC

600

MANUFACTURER'S

TRADEMARK

BI-WEEKLY

DATE CODE:

WEEK 13-14 = G

YEAR CODE:

6 = 2006

Voltage

Rated

Volts

230

Primary

Protection

CMF-SD Series - Telecom CPTC Resettable Fuses

Features

Ohms Tolerance

Product Designator

Style

Rated Resistance (RN)

Reduced Footprint and Height Option*

Resistance Tolerance Option

Packaging Options

*Reduced footprint and height option currently

unavailable for Model CMF-SD25.

Resistance (RN)

Two resistance-matched PTCs in a

ceramic housing

Narrow resistance tolerance

RoHS compliant*

How to Order

Blank = Standard (20 %)

SD = Surface Mount Dual Pkg.

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

-10 = 10 %

- 2 = Tape & Reel

Rated

@ 25 °C

±20 %

±10 %

±20 %

±10 %

±20 %

±10 %

±20 %

±10 %

±20 %

±10 %

Test Condition

CMF - SD 35 A -10 - 2

Resistance

In Housing

Matching

Ohms

± 0.5

Amps @ 25 °C Amps @ 25 °C

Current

0.130

0.100

0.090

Hold

Applications

device in:

Used as a secondary overcurrent protection

Customer Premise Equipment (CPE)

Central Office (CO)

Access equipment

Current

0.260

0.200

0.190

Trip

230 VAC

Imax @

Amps

2.8

2.5

Requirements

Time to Trip

230 VAC

Seconds

@ Imax/

< 0.3

< 0.2

< 0.1

Related parts for CMF-SD

CMF-SD Summary of contents

Page 1

... CMF-SD50A-10 600 230 Test Procedures And Requirements For Model CMF-SD Series Test Mains Power Contact - ITU-T K.20, K.21 ....None................230 V rms, 10 ohms, 15 Min. ......................................................(Ri-Rf < ±10 % Power Induction - ITU-T K.20, K.21..............None................600V rms, 600 ohms, 0.2 seconds, 10 cycles, every 1 Min. ......(Ri-Rf < ±10 % Power Induction - ITU-T K.20, K.21..............GDT ................600 V rms, 600 ohms, 1 second, 10 cycles, every 1 Min. ..........(Ri-Rf < ±10 % Power Induction - ITU-T K.20, K.21..............GDT ................600 V rms, 200 ohms, 1 second, 10 cycles, every 1 Min. ..........(Ri-Rf < ...

Page 2

... E MM DIMENSIONS = (INCHES 0.15 Coplanarity: (.006) (Reduced value available on request.) Packaging Options - Tape and Reel: CMF-SD25, CMF-SD35 & CMF-SD50 = 400 pcs. per reel; CMF-SD35A & CMF-SD50A = 500 pcs. per reel Solder Reflow Recommendations Preheating 300 250 200 150 100 50 0 160–220 ...

Page 3

... CMF-SD Series Tape and Reel Specifications Tape Dimensions per EIA 481 max CMF-SD25 CMF-SD35-2 CMF-SD50-2 P CMF-SD35A-2 CMF-SD50A 3. (.136) 1.0 5.8 (.039) (.228) MM DIMENSIONS = (INCHES) CMF-SD25-2 CMF-SD35-2 CMF-SD50-2 24.0 +0.30/-0.10 (0.945 +0.012/-0.004 ) 4.00 ± ...

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