Features

- ITU-T K.20/21/45

- Telcordia GR-1089-CORE

- UL 60950, 3rd Ed.

Applications

Used as a secondary overcurrent protection

device in:

CMF-RL Series - Telecom CPTC Resettable Fuses

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

Test Procedures And Requirements For Model CMF-RL Series

Primary

Test

Protection

Test Condition

Requirements*

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

Test

Model

Test Condition

Passing Criteria

UL 1950 ..........................................CMF-RL50* ................. 600 V / 2.2 A for 30 minutes..............................No charring cheesecloth indicator

600 V / 7 A for 5 seconds

600 V / 40 A for 1.5 seconds

*For other models, please contact Bourns.

UL File Number ........................................... E307915 ....... http://www.ul.com/ Follow link to Certifications, then UL File No., enter E307915

Electrical Characteristics

Model

Induction

Voltage

Withstand

Rated

Voltage

Rated

Resistance

(RN)

Packaging

Resistance

Matching

Hold

Current

Trip

Current

Imax @

220 VAC

Time to Trip

@ Imax / 220

VAC

VAC

Volts

Ohms

Tolerance

Ohms

@ 25 °C

Amps

@ 25 °C

Amps

@ 25 °C

Amps

@ 25 °C

Seconds

@ 25 °C

CMF-RL10

600

220

10

±20 %

± 0.5

0.15

0.30

3

≤ 0.45

CMF-RL10-10

600

220

10

±10 %

± 0.5

0.15

0.30

3

≤ 0.45

CMF-RL25

600

220

25

±20 %

± 0.5

0.100

0.200

3

≤ 0.3

CMF-RL25U

600

220

25

±20 %

± 0.5

0.060

0.150

0.9

≤ 0.25

CMF-RL35

600

220

35

±20 %

± 0.5

0.075

0.150

3

≤ 0.15

CMF-RL35-10

600

220

35

±10 %

± 0.5

0.075

0.150

3

≤ 0.15

CMF-RL35A

600

220

35

±10 %

± 0.5

0.075

0.150

3

≤ 0.15

CMF-RL35A-10

600

220

35

±10 %

± 0.5

0.075

0.150

3

≤ 0.15

CMF-RL50

600

220

50

±20 %

± 0.5

0.065

0.150

3

≤ 0.15

CMF-RL50-10

600

220

50

±10 %

± 0.5

0.065

0.150

3

≤ 0.15

CMF-RL50A

600

220

50

±20 %

± 0.5

0.050

0.100

3

≤ 0.1

CMF-RL50A-10

600

220

50

±10 %

± 0.5

0.050

0.100

3

≤ 0.1

CMF-RL55

600

220

55

±20 %

± 0.5

0.065

0.150

3

≤ 0.15

CMF-RL55-10

600

220

55

±10 %

± 0.5

0.065

0.150

3

≤ 0.15

CMF-RL55A

600

220

55

±20 %

± 0.5

0.050

0.100

3

≤ 0.1

CMF-RL55A-10

600

220

55

±10 %

± 0.5

0.050

0.100

3

≤ 0.1

How to Order

CMF - RL 50 __ A -10 - 0

Product Designator

Style

RL = Telecom Radial Leaded CPTC

Rated Resistance (RN)

10-55 (10 Ohms - 55 Ohms)

Uncoated Option

U = Uncoated Part

Blank = Standard Part

Size Option

A = Reduced Size

Blank = Standard Size

Rated Resistance Tolerance

-10 = ±10 %

Blank = ±20 % (Standard)

Packaging Options

- 0 = Bulk Packaging - Plastic Tray

Alternative tolerances, resistances and lead lengths available on request.

Typical Part Marking

Represents total content. Layout may vary.

506G

MANUFACTURER'S

TRADEMARK

PART

IDENTIFICATION:

10 = CMF-RL10

25 = CMF-RL25

25U = CMF-RL25U

35 = CMF-RL35

50 = CMF-RL50

55 = CMF-RL55

10K = CMF-RL10-10

35K = CMF-RL35-10

50K = CMF-RL50-10

55K = CMF-RL55-10

35A = CMF-RL35A

50A = CMF-RL50A

55A = CMF-RL55A

35AK = CMF-RL35A-10

50AK = CMF-RL50A-10

55AK = CMF-RL55A-10

NOTE:

UNCOATED PARTS ARE UNMARKED.

YEAR CODE:

6 = 2006

BI-WEEKLY

DATE CODE:

WEEK 13-14 = G

Operating Temperature Range: -40°C to +125 °C