CMF-RL50A-10-0 - Bourns, Inc.

Features

■ Radial leaded devices

■ 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 Ofﬁ ce (CO)

■ Access equipment

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.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c 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 ﬁ nal

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.

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

*RoHS COMPLIANT

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

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c applications.

CMF-RL Series - Telecom CPTC Resettable Fuses

Product Dimensions

Packaging:

BULK: CMF-RL25U & CMF-RL50A = 700 pcs. per bag; all other models = 600 pcs. per tray. DIMENSIONS: MM

(INCHES)

Model A B C D E F Characteristics

Max. Max. Max. Nom. Nom. Nom. Material Style

CMF-RL10 9.5

(0.374)

4.5

(0.177)

13.5

(0.531)

3.5

(0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.2

(0.197 ± 0.008) Sn/Cu 1

CMF-RL25 9.8

(0.386)

5.0

(0.197)

13.5

(0.531)

3.0 - 3.5

(0.118 - 0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.3

(0.197 ± 0.012) Sn/Cu 1

CMF-RL25U 5.2

(0.205)

3.5

(0.138)

5.2

(0.205)

3.8

(0.150)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.2

(0.197 ± 0.008) Sn/Cu 2

CMF-RL35 9.8

(0.386)

5.0

(0.197)

13.5

(0.531)

3.0 - 3.5

(0.118 - 0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.08 ± 0.3

(0.200 ± 0.012) Sn/Cu 1

CMF-RL35A 7.5

(0.295)

5.6

(0.220)

13.0

(0.512)

3.5

(0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.2

(0.197 ± 0.008) Sn/Cu 1

CMF-RL50 9.8

(0.386)

5.0

(0.197)

13.5

(0.531)

3.0 - 3.5

(0.118 - 0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.08 ± 0.3

(0.200 ± 0.012) Sn/Cu 1

CMF-RL50A 7.5

(0.295)

5.6

(0.220)

13.0

(0.512)

3.5

(0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.2

(0.197 ± 0.008) Sn/Cu 1

CMF-RL55 9.8

(0.386)

5.0

(0.197)

13.5

(0.531)

3.0 - 3.5

(0.118 - 0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.08 ± 0.3

(0.200 ± 0.012) Sn/Cu 1

CMF-RL55A 7.5

(0.295)

5.6

(0.220)

13.0

(0.512)

3.5

(0.138)

0.6 ± 0.05

(0.024 ± 0.019)

5.0 ± 0.2

(0.197 ± 0.008) Sn/Cu 1

A A

Style 1 Style 2 Style 3

CMF-RL SERIES, REV. R, 07/12