Carbon Film Fixed Resistors Type CFR Series Type CFR Series Characteristics Electrical Rated Power @ 70 C (W) Resistance Range (Ohms) Min Max CFR25 0.33 1R0 10M Tolerance (%) Code letter Temp. Coefficient (ppm/C) R<10 0 to +200 R>10 0 to -1200 Selection Series Limiting Element Voltage (V) 200 Max Overload Voltage1 (V) 400 Max Intermittent Overload Voltage2 (V) 500 Operating Temp. Range (C) Climatic Category (C) Dielectric Strength (V) 400 Insulation Resistance (Mohms) The resistive element comprises a thin film of carbon, deposited onto a high thermal conductivity ceramic core. CFR16 0.25 1R0 4M7 Metal end caps are force fitted to the element prior to spiralling to value. Tinned copper lead wires are welded to the end CFR50 0.5 1R0 10M 2 G 0 to +200 0 to -1200 250 500 700 500 CFR100 1 1R0 10M CFR200 2 1R0 10M 0 to +350 -100 to -500 0 to +350 -100 to -500 500 1000 750 500 1000 750 1000 1000 5 J 0 to +200 0 to -1200 E24 350 700 750 -55 to +155 55/155/56 700 1000 caps and the components are then 1 coated. One coat of phenolic resin Maximum Overload Voltage is 2.5 times rated voltage up to the specified voltage for 5 seconds. 2 Maximum Intermittent Overload Voltage is 4 times rated voltage up to the specified voltage for 1 second ON and 25 seconds OFF. >100R ONLY is followed by three coats of epoxy resin. All resistors are tested for Dimensions value and tolerance. Key Features Premium quality carbon film resistors whose ceramic core has a high alumina content offering power to size ratios not normally associated with carbon film product. Available in 5 power ratings from 1 ohm to 10 Mohm. The smallest case size (CFR16) has a full 0.25 W power rating. Style L* max. D max. d 0.05 I CFR16 3.5 1.85 0.45 28 3 CFR25 6.8 2.5 0.54 28 3 CFR50 9.0 3.0 0.54 28 3 CFR100 12.0 5.0 0.70 28 3 CFR200 16.0 5.5 0.70 28 3 * Length is measured in accordance with IEC 294 Derating Curve Surface Temperature Rise vs Load 100 80 CFR16 CFR25 CFR50 80 Temperature Rise (C) Low cost, combined with high reliability, make these components suitable for use in most types of circuits, including audio, communications, measurement and computer applications. Percent Rated Power 60 40 20 60 CFR200 40 20 0 0 40 60 70 80 100 120 140 Ambient Temperature (C) Literature No. 1773195 Issued: 07-08 CFR100 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. 160 0 0.125 0.25 0.375 0.5 0.75 1 2 Power Dissipation (W) Specifications subject to change. tycoelectronics.com passives.tycoelectronics.com Carbon Film Fixed Resistors Type CFR Series Marking The resistors are marked with a four colour band code in accordance with IEC 62. Mounting The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines. Packaging Carbon film resistors are normally supplied taped in 'ammo' boxes. Other styles may be supplied on request. All tape specifications are in accordance with IEC 286-1. Box Quantity Std. Tape Spacing Component Spacing CFR16 5000 52 5 CFR25 4000 52 5 CFR50 3000 52 5 CFR100 1000 52 10 CFR200 500 64 10 Type Performance Characteristics The evaluation of the performance characteristics is carried out with reference to IECQ specifications QC 400 000 and QC 400 100. TEST REF Long Term Tests (5% + 0.1 ohm) 4.23 Climatic sequence 4.24 Damp heat, steady state 4.25.1 Endurance at 70C 4.25.3 Endurance at 155C TEST REF Short Term Tests (1% + 0.05 ohm) 4.13 Overload 4.16 Robustness of terminations 4.18 Resistance to soldering heat 4.19 Rapid change of temperature 4.22 Vibration How to Order Orders for these components should include the following information:Type, tolerance code letter and value e.g. CFR25 J 1K0 Literature No. 1773195 Issued: 07-08 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. tycoelectronics.com passives.tycoelectronics.com