CMF-SD50

Features NT S CO M PL Applications Used as a secondary overcurrent protection device in: ■ Customer Premise Equipment (CPE) ■ Central Office (CO) ■ Access equipment ■ ■ ■ ■ Two 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* *R oH IA CMF-SD Series - Telecom CPTC Resettable Fuses Electrical Characteristics Induction Voltage Withstand VAC Rated Resistance (RN) Ohms Tolerance Resistance Matching In Housing Ohms Time to Trip @ Imax/ 230 VAC Seconds Model Rated Voltage Volts Hold Current Trip Current Imax @ 230 VAC Amps Amps @ 25 °C Amps @ 25 °C 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 Product Dimensions A 600 600 600 600 600 600 600 600 600 600 230 230 230 230 230 230 230 230 230 230 25 25 35 35 35 35 50 50 50 50 ±20 % ±10 % ±20 % ±10 % ±20 % ±10 % ±20 % ±10 % ±20 % ±10 % ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 ± 0.5 0.130 0.130 0.100 0.100 0.100 0.100 0.090 0.090 0.090 0.090 0.260 0.260 0.200 0.200 0.200 0.200 0.190 0.190 0.190 0.190 2.8 2.8 3 3 2.5 2.5 3 3 3 3 < 0.3 < 0.3 < 0.2 < 0.2 < 0.2 < 0.2 < 0.1 < 0.1 < 0.1 < 0.1 Recommended Pad Layout B Dim. B CMF-SD25 CMF-SD35 CMF-SD50 9.00 MAX. (.354) 10.80 MAX. (.425) 10.20 MAX. (.402) 4.88 - 5.28 (.192 - .208) 2.41 - 2.61 (.095 - .103) 0.5 MAX. (.020) CMFSD35A CMF-SD50A 7.15 MAX. (.281) 8.50 MAX. (.335) 8.10 MAX. (.319) 3.25 - 3.65 (.128 - .144) 2.41 - 2.61 (.095 - .103) 0.5 MAX. (.020) 1 2 A 3 F 4 G A B F C MM (INCHES) E D DIMENSIONS = C H D E D E C 1 2 Packaging options: TAPE & REEL: CMF-SD25, CMF-SD35 & CMF-SD50 = 400 pcs. per reel; CMF-SD35A & CMF-SD50A = 500 pcs. per reel F 3 4 Typical Part Marking Represents total content. Layout may vary. PART IDENTIFICATION: 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 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) 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 CMF-SD25/ CMF-SD35/ Dim. CMF-SD50 A B C D E F G 10.0 (.394) 8.80 (.346) 3.20 (.126) 2.00 (.079) 2.60 (.102) 5.00 (.197) 7.60 (.299) 10.0 (.394) CMF-SD35A/ CMF-SD50A 8.00 (.315) 7.05 (.278) 2.75 (.108) 2.00 (.079) 2.51 (.099) 3.45 (.136) 5.95 (.234) 8.15 (.321) 356G *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. H CMF-SD Series - Telecom CPTC Resettable Fuses Solder Reflow Recommendations 300 250 200 150 100 50 0 160–220 10–20 Time (seconds) 120 Preheating Soldering Cooling Solder reflow • Recommended reflow 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 reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. Rework • A device should not be reworked. Temperature (°C) Reliable Electronic Solutions Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com CMF-SD SERIES, REV. F, 08/07 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. CMF-SD Series Tape and Reel Specifications CMF-SD25-2 CMF-SD35-2 CMF-SD50-2 24.0 +0.30/-0.10 (0.945 +0.012/-0.004 ) 4.00 ± 0.10 (0.157 ± 0.004) 16.0 ± 0.10 (0.630 ± 0.004) 2.00 ± 0.10 (0.079 ± 0.004) 10.2 ± 0.10 (0.402 ± 0.004) 9.0 ± 0.10 (0.354 ± 0.004) 1.5 +0.10/-0.0 (0.059 +0.004/-0.0) 11.5 ± 0.10 (0.453 + 0.004) 1.75 ± 0.10 (0.069 ± 0.004) 0.50 (0.020) 11.0 ± 0.10 (0.433 ± 0.004) Tape Dimensions per EIA 481-2 W P0 P1 P2 A0 B0 D0 F E1 T max.1 K0 D P2 P0 CMF-SD35A-2 CMF-SD50A-2 16.0 ± 0.10 (0.630 ± 0.004 ) 4.00 ± 0.10 (0.157 ± 0.004) 12.0 ± 0.10 (0.472 ± 0.004) 2.00 ± 0.10 (0.079 ± 0.004) 8.35 ± 0.10 (0.329 ± 0.004) 8.30 ± 0.10 (0.327 ± 0.004) 1.5 +0.10/-0.0 (0.059 +0.004/-0.0) 7.5 ± 0.10 (0.295 + 0.004) 1.75 ± 0.10 (0.069 ± 0.004) 0.50 (0.020) 8.80 ± 0.10 (0.346 ± 0.004) E T CMF-SD25-2 CMF-SD35-2 CMF-SD50-2 F W 330 -2/+0 (12.99 -.079/+0) DIA. B0 P A0 5° K0 16.4 +2.0/-0 (.646 +.079/-0) MAX. 22.4 (.882) 13.2 +0.2/-0 (.520 +.008/-0 100 ± 1.5 DIA. (3.94 ± .059) CMF-SD35A-2 CMF-SD50A-2 D P2 P0 E 0.50 (.020) D1 F W B0 330 -2/+0 (12.99 -.079/+0) DIA. P 20 ° 8° A0 K1 K0 9.1 (.358) 16.4 +2.0/-0 (.646 +.079/-0) MAX. 22.4 (.882) 13.2 +0.2/-0 (.520 +.008/-0 100 ± 1.5 (3.94 ± .059) DIA. UNIT = MM (INCHES) 4.5 (.177) A0 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.