CMF-SD10 BOURNS | Alldatasheet

Document overview

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Technical content

Features

■ Two resistance-matched PTCs in a ceramic housing ■ Narrow resistance tolerance ■ RoHS compliant* CMF-SD Series - Telecom CPTC Resettable Fuses *RoHS Directive 2002/95/EC Jan 27 2003 including Annex. 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-SD Series Primary Test Protection Test Condition Requirements Ri = R initial Rf = R fi nal

Electrical Characteristics

(RN) @ 25 °C Resistance Matching in Housing Hold Current Trip Current Imax @

230 VAC

Trip @ Imax / 230 VAC VAC Volts Ohms Tolerance Ohms Amps @ 25 °C Amps @ 25 °C Amps Seconds CMF-SD10 600 220 10 ±20 % ±1.0 0.150 0.360 1 <4.5 CMF-SD35 600 230 35 ±20 % ±0.5 0.100 0.200 3 < 0.2 CMF-SD35-10 600 230 35 ±10 % ±0.5 0.100 0.200 3 < 0.2 CMF-SD50 600 230 50 ±20 % ±0.5 0.090 0.190 3 < 0.1 CMF-SD50-10 600 230 50 ±10 % ±0.5 0.090 0.190 3 < 0.1 CMF-SD50A 600 230 50 ±20 % ±0.5 0.090 0.190 3 < 0.1 CMF-SD50A-10 600 230 50 ±10 % ± 0.5 0.090 0.190 3 < 0.1 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. Typical Part Marking Represents total content. Layout may vary. 356G MANUFACTURER'S TRADEMARK 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 YEAR CODE: 6 = 2006 BI-WEEKLY DATE CODE: WEEK 13-14 = G Model CMF-SD is currently available, although not recommended for new designs. Model CMF-SDP is preferred. *RoHS COMPLIANT

Specifi cations are subject to change without notice. Customers should verify actual device performance in their specifi c applications. CMF-SD Series - Telecom CPTC Resettable Fuses CMF-SD SERIES, REV. O, 05/10 Product Dimensions (Reduced value available on request.) Packaging Options - Tape and Reel: CMF-SD10, CMF-SD25, CMF-SD35 & CMF-SD50 = 400 pcs. per reel; CMF-SD35A & CMF-SD50A = 500 pcs. per reel A B F H G E D C Dim. CMF-SD10 CMF-SD25 CMF-SD35 CMF-SD50 CMF-SD35A CMF-SD50A A 9.00 (.354) MAX. 7.15 (.281) MAX. B 10.80 (.425) MAX. 8.50 (.355) MAX. C 10.20 (.402) MAX. 8.10 (.319) MAX. D 4.88 - 5.28 (.192 - .208) 3.25 - 3.65 (.128 - .144) E 2.41 - 2.61 (.095 - .103) 2.41 - 2.61 (.095 - .103) F 0.5 (.020) MAX. 0.5 (.020) MAX. G 2.5 (.098) 2.5 (.098) H 1.0 (.039) 1.0 (.039) DIMENSIONS: MM (INCHES) COPLANARITY: 0.15 (.006) Recommended Pad Layout B A F EDC H G 1 2 3 4 Solder Refl ow Recommendations 160–220 300 250 200 150 100 10–20 Temperature (°C) 120 Preheating Soldering Cooling Time (seconds) Solder refl ow  Recommended refl ow methods: IR, vapor phase oven, hot air oven.  Devices are not designed to be wave soldered to the bottom side of the board.  Gluing the devices is not recommended.  Recommended maximum paste thickness is 0.25 mm (.010 inch).  Devices can be cleaned using standard industry methods and solvents. Note:  If refl ow temperatures exceed the recommended profi le, devices may not meet the performance requirements. Rework  A device should not be reworked. Dim. CMF-SD10 CMF-SD25 CMF-SD35 CMF-SD50 CMF-SD35A CMF-SD50A A 10.0 (.394) 8.00 (.315) B 8.80 (.346) 7.05 (.278) C 3.20 (.126) 2.75 (.108) D 2.00 (.079) 2.00 (.079) E 2.60 (.102) 2.51 (.099) F 5.00 (.197) 3.45 (.136) G 7.60 (.299) 5.95 (.234) H 10.0 (.394) 8.15 (.321) DIMENSIONS: MM (INCHES)

Applications

Used as a secondary overcurrent protection device in: ■ Customer Premise Equipment (CPE) ■ Central Offi ce (CO) ■ Access equipment

T K 93° 0A0P PA0 F P2 P0 E W F E W P2 P0 2.5 (.098) 0.5 (.020) 13.2 +0.2/-0 (.520 +.008/-0 16.4 +2.0/-0 (.646 +.079/-0) 16.4 +2.0/-0 (.646 +.079/-0) 22.4 (.882) MAX. 22.4 (.882) MAX. 330 -2/+0 (12.99 -.079/+0) DIA. 100 ± 1.5 (3.94 ± .059) DIA. 13.2 +0.2/-0 (.520 +.008/-0 330 -2/+0 (12.99 -.079/+0) DIA. 100 ± 1.5 (3.94 ± .059) DIA. D D T 1.0 (.039)5.8 (.228) 3.45 (.136) CMF-SD10 CMF-SD25-2 CMF-SD35-2 CMF-SD35A-2 Tape Dimensions per EIA 481-2 CMF-SD50-2 CMF-SD50A-2 P0 4.00 ± 0.10 4.00 ± 0.10 P 16.0 ± 0.10 12.0 ± 0.10 P2 2.00 ± 0.10 2.00 ± 0.10 A0 10.2 ± 0.10 7.30 ± 0.10 B0 9.0 ± 0.10 8.30 ± 0.10 F 11.5 ± 0.10 11.5 ± 0.10 E 1.75 ± 0.10 1.75 ± 0.10 T max. 0.50 0.50 ± 0.005 T1 max. 0.1 0.1 (0.004) (0.004) K0 11.0 ± 0.10 8.80 ± 0.10 CMF-SD Series Tape and Reel Specifi cations Specifi cations are subject to change without notice. Customers should verify actual device performance in their specifi c applications. DIMENSIONS: MM (INCHES) CMF-SD25-2 CMF-SD35-2 CMF-SD50-2 CMF-SD35A-2 CMF-SD50A-2