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CMF-RD50-10 Datasheet(PDF) 1 Page - Bourns Electronic Solutions |
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CMF-RD50-10 Datasheet(HTML) 1 Page - Bourns Electronic Solutions |
1 / 2 page *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. CMF-RD Series - Telecom CPTC Resettable Fuses Time Induction Rated Resistance to Trip Voltage Rated Resistance Matching Hold Hold Trip Imax @ @ Imax/ Model Withstand Voltage (RN) In Housing Current Current Current 230 VAC 230 VAC Amps Amps Amps VAC Volts Ohms Tolerance Ohms @ 25 °C @ 40 °C @ 25 °C Amps Seconds CMF-RD50 600 230 50 ±20 % ± 0.5 0.09 0.06 0.19 3.0 < 0.1 CMF-RD50-10 600 230 50 ±10 % ± 0.5 0.09 0.06 0.19 3.0 < 0.1 Electrical Characteristics Features ■ 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* Applications Used as a secondary overcurrent protection device in: ■ Customer Premise Equipment (CPE) ■ Central Office (CO) ■ Access equipment How to Order CMF - RD 50 - 10 - 0 Product Designator Style RD = Radial Dual Package Rated Resistance (RN) 50 (50 Ohms) Rated Resistance Tolerance -10 = ±10 % Blank = ±20 % (Standard) Packaging Options - 0 = Bulk Packaging Typical Part Marking Represents total content. Layout may vary. Product Dimensions Packaging options: BULK: 96 pcs. per plastic box MM (INCHES) DIMENSIONS = 13 2 4 3.5 (.138) 10.0 ± 0.2 (.394 ± .008) 8.8 ± 0.2 (.346 ± .008) 8.8 ± 0.2 (.346 ± .008) 0.35 (.014) SIDE FRONT TOP BOTTOM 0.75 (.030) 0.6 (.236) 1 & 3 = FRONT PINS 2 & 4 = BACK PINS PINS 1 & 2 = 1ST CPTC PINS 3 & 4 = 2ND CPTC 5.0 ± 0.2 (.197 ± .008) 6.0 (.236) 9.3 ± 0.2 (.366 ± .008) 1.5 (.059) 2.0 (.079) 4.7 ± 0.1 (.185 ± .039) 5.0 ± 0.2 (.197 ± .008) 2.5 ± 0.1 (.098 ± .004) 12 3 4 C50M7G MANUFACTURER'S TRADEMARK CERAMIC CASE PART IDENTIFICATION: 50M = CMF-RD50 50K = CMF-RD50-10 YEAR CODE: 7 = 2007 BI-WEEKLY DATE CODE: WEEK 13-14 = G 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 % 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. Test Procedures And Requirements For Model CMF-RD Series |
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