M
PL
IA
N
T
Features
■
Radial leaded devices
■
Aids compliance with:
Applications
Used as a secondary overcurrent protection
device in:
■
Customer Premise Equipment (CPE)
■
Central Office (CO)
■
Access equipment
*R
oH
S
CO
- ITU-T K.20/21/45
- Telcordia GR-1089-CORE
- UL 60950, 3rd Ed.
■
Narrow resistance tolerance
■
Agency recognition:
■
RoHS compliant*
CMF-RL Series - Telecom CPTC Resettable Fuses
Electrical Characteristics
Induction
Voltage
Withstand
VAC
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
Rated
Voltage
Volts
220
220
220
220
220
220
220
220
220
220
220
220
220
220
220
220
Rated
Resistance
(RN)
Ohms
10
10
25
25
35
35
35
35
50
50
50
50
55
55
55
55
Tolerance
±20 %
±10 %
±20 %
±20 %
±20 %
±10 %
±10 %
±10 %
±20 %
±10 %
±20 %
±10 %
±20 %
±10 %
±20 %
±10 %
Packaging
Resistance
Matching
Ohms
@ 25 °C
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
± 0.5
Hold
Current
Amps
@ 25 °C
0.15
0.15
0.100
0.060
0.075
0.075
0.075
0.075
0.065
0.065
0.050
0.050
0.065
0.065
0.050
0.050
Trip
Current
Amps
@ 25 °C
0.30
0.30
0.200
0.150
0.150
0.150
0.150
0.150
0.150
0.150
0.100
0.100
0.150
0.150
0.100
0.100
Imax @
220 VAC
Amps
@ 25 °C
3
3
3
0.9
3
3
3
3
3
3
3
3
3
3
3
3
Time to Trip
@ Imax / 220
VAC
Seconds
@ 25 °C
≤
0.45
≤
0.45
≤
0.3
≤
0.25
≤
0.15
≤
0.15
≤
0.15
≤
0.15
≤
0.15
≤
0.15
≤
0.1
≤
0.1
≤
0.15
≤
0.15
≤
0.1
≤
0.1
Model
CMF-RL10
CMF-RL10-10
CMF-RL25
CMF-RL25U
CMF-RL35
CMF-RL35-10
CMF-RL35A
CMF-RL35A-10
CMF-RL50
CMF-RL50-10
CMF-RL50A
CMF-RL50A-10
CMF-RL55
CMF-RL55-10
CMF-RL55A
CMF-RL55A-10
Operating Temperature Range: -40°C to +125 °C
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
Typical Part Marking
How to Order
Represents total content. Layout may vary.
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
MANUFACTURER'S
TRADEMARK
50 6 G
BI-WEEKLY
DATE CODE:
WEEK 13-14 = G
YEAR CODE:
6 = 2006
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.
NOTE:
UNCOATED PARTS ARE UNMARKED.
*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.
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