CMF-SD10 Datasheet, PDF (1/3 Pages) Bourns Electronic Solutions – Telecom CPTC Resettable Fuses

*RoHS ^COMPLIANT
Features
■ Two resistance-matched PTCs in a
ceramic housing
■ Narrow resistance tolerance
■ RoHS compliant*
Model CMF-SD is currently available,
although not recommended for new
designs. Model CMF-SDP is
preferred.
CMF-SD Series - Telecom CPTC Resettable Fuses
Electrical Characteristics
Model
CMF-SD10
CMF-SD25
CMF-SD25-10
CMF-SD35
CMF-SD35-10
CMF-SD35A
CMF-SD35A-10
CMF-SD50
CMF-SD50-10
CMF-SD50A
CMF-SD50A-10
Induction
Voltage
Withstand
VAC
600
600
600
600
600
600
600
600
600
600
600
Rated
Voltage
Volts
220
230
220
230
230
230
230
230
230
230
230
Rated
Resistance
(RN) @ 25 °C
Ohms Tolerance
10
±20 %
25
±20 %
25
±10 %
35
±20 %
35
±10 %
35
±20 %
35
±10 %
50
±20 %
50
±10 %
50
±20 %
50
±10 %
Resistance
Matching in
Housing
Ohms
±1.0
±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
0.150
0.130
0.130
0.100
0.100
0.100
0.100
0.090
0.090
0.090
0.090
Trip
Current
Amps @ 25 °C
0.360
0.260
0.260
0.200
0.200
0.200
0.200
0.190
0.190
0.190
0.190
Imax @
230 VAC
Amps
1
2.8
2.5
3
3
2.5
2.5
3
3
3
3
Time to
Trip @
Imax / 230
VAC
Seconds
<4.5
< 0.3
< 0.3
< 0.2
< 0.2
< 0.2
< 0.2
< 0.1
< 0.1
< 0.1
< 0.1
Test Procedures And Requirements For Model CMF-SD 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
Typical Part Marking
Represents total content. Layout may vary.
PART
IDENTIFICATION:
10 = CMF-SD10
25 = CMF-SD25
35 = CMF-SD35
50 = CMF-SD50
35A = CMF-SD35A
50A = CMF-SD50A
25K = CMF-SD25-10
35K = CMF-SD35-10
50K = CMF-SD50-10
35AK = CMF-SD35A-10
50AK = CMF-SD50A-10
50AL = CMF-SD50A-15
356G
MANUFACTURER'S
TRADEMARK
BI-WEEKLY
DATE CODE:
WEEK 13-14 = G
YEAR CODE:
6 = 2006
How to Order
CMF - SD 35 A -10 - 2
Product Designator
Style
SD = Surface Mount Dual Pkg.
Rated Resistance (RN)
10, 25, 35, 50 (25, 35, 50 Ohms)
Reduced Footprint and Height
Option*
Resistance Tolerance Option
Blank = Standard (20 %)
-10 = 10 %
Packaging Options
- 2 = Tape & Reel
*Reduced footprint and height option currently
unavailable for Model CMF-SD25.
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.