CMF-RQ Bourns, Inc., CMF-RQ Datasheet

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CMF-RQ

Manufacturer Part Number
CMF-RQ
Description
Cmf-rq Series - Telecom Cptc Resettable Fuses
Manufacturer
Bourns, Inc.
Datasheet
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 %
Overvoltage Withstand ..........................................................300 V, 3 A, 4 Hours, 1 Time ........................................................(Ri-Rf) / Ri < ±10 %
Failure Mode ..........................................................................300 V, RL=0, 60 Min. ..................................................................**
Ri = R initial
Rf = R final
** Circuit disconnected or high resistance is acceptable.
Packaging options:
BULK: 56 pcs. per plastic box
Electrical Characteristics
Product Dimensions
CMF-RQ50
CMF-RQ50-10
Test Procedures And Requirements For Model CMF-RQ Series
Model
(.236)
0.6
(.354 ± .039)
SIDE
Withstand
Induction
9.0 ± 1.0
Voltage
VAC
600
600
(.047)
1.2
Voltage
Rated
(.197 ± .008)
(.059)
(.079)
Volts
230
230
1.5
2.0
5.0 ± 0.2
(.098 ± .039)
2.5 ± 0.1
Ohms
Primary
Protection
50
50
Resistance
Rated
1
CMF-RQ Series - Telecom CPTC Resettable Fuses
(RN)
Features
Four resistance-matched PTCs in a
ceramic housing
Aids compliance with:
- ITU-T K.20/21/45
- Telcordia GR-1089-CORE
- UL 60950, 3rd Ed.
Narrow resistance tolerance
RoHS compliant*
Tolerance
2
±20 %
±10 %
3
Test Condition
(.787 ± .039)
20.0 ± 1.0
FRONT
BOTTOM
(.197 ± .008)
Resistance
In Housing
4
5.0 ± 0.2
Matching
Ohms
± 0.5
± 0.5
5
6
Customers should verify actual device performance in their specific applications.
7
Current
@ 25 °C
Amps
Hold
0.09
0.09
8
(.354 ± .039)
(.394 ± .039)
9.0 ± 1.0
10.0 ± 1.0
Current
@ 40 °C
Amps
Hold
0.06
0.06
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Applications
device in:
Used as a secondary overcurrent protection
Customer Premise Equipment (CPE)
Central Office (CO)
Access equipment
Specifications are subject to change without notice.
DIMENSIONS =
PINS 1 & 2 = 1ST CPTC
PINS 3 & 4 = 2ND CPTC
PINS 5 & 6 = 3RD CPTC
PINS 7 & 8 = 4TH CPTC
1 3 5 7 = FRONT PINS
2 4 6 8 = BACK PINS
Current
@ 25 °C
Amps
0.19
0.19
Trip
(INCHES)
MM
230 VAC
Imax @
Amps
Requirements
3.0
3.0
230 VAC
Seconds
@ Imax/
to Trip
< 0.1
< 0.1
Time

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CMF-RQ Summary of contents

Page 1

... CMF-RQ50-10 600 230 Test Procedures And Requirements For Model CMF-RQ 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

... CMF-RQ Series - Telecom CPTC Resettable Fuses Typical Part Marking Represents total content. Layout may vary. MANUFACTURER'S TRADEMARK QUAD CERAMIC CASE BI-WEEKLY PART C450M7G DATE CODE: IDENTIFICATION: WEEK 13- 50M = CMF-RQ50 50K = CMF-RQ50-10 YEAR CODE 2007 Reliable Electronic Solutions CMF-RQ SERIES, REV. B, 11/07 COPYRIGHT' 2007, BOURNS, INC. LITHO IN U.S.A., MF0725 08/07 ...

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