Features
■ Radial leaded devices
■ Aids compliance with:
- ITU-T K.20/21/45
- Telcordia GR-1089-CORE
- UL 60950, 3rd Ed.
■ Narrow resistance tolerance
■ Agency recognition:
■ 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.
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 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.
UL File Number ........................................... E307915 ....... http://www.ul.com/ Follow link to Certifi cations, 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
*RoHS COMPLIANT
Operating Temperature Range: -40°C to +125 °C
Specifi cations 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 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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
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 ± 0.002)
5.0 ± 0.2
(0.197 ± 0.008) Sn/Cu 1
A A
B
C
D
FF
EE
AB
C
D
F
E
B
C
D
Style 1 Style 2 Style 3
CMF-RL SERIES, REV. T, 12/14
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bourns:
CMF-RL35-0 CMF-RL50-0 CMF-RL55-0 CMF-RL35-10-0 CMF-RL50-10-0 CMF-RL55-10-0 CMF-RL50A-0 CMF-
RL55A-0 CMF-RL10-0 CMF-RL10-10-0 CMF-RL25U-0 CMF-RL25U-15-0 CMF-RL35A-10-0 CMF-RL50A-10-0
CMF-RL55A-10-0 CMF-RL25-0 CMF-RL35A-0 CMF-SM10-2 CMF-SM25-2 CMF-SM15-2
