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| Precision Metal Film Resistor RC Series * Resistance tolerance down to 0.05% * Low noise and negligible voltage coefficient * CECC released product with low TCRs over a wide resistance range * 100% tin plated (Pb-free, RoHS compliant) leads Electrical Data RC55 Commercial Power Rating At 70C Resistance Range Limiting Element Voltage Isolation Voltage TCR (20 to +70C) & codes Resistance Tolerance Approved CECC 40101-004 Power Rating At 70C Resistance Range Limiting Element Voltage Isolation Voltage TCR & Codes Resistance Tolerance (code) Approved CECC 40101-804 Power Rating At 70C Resistance Range Limiting Element Voltage Isolation Voltage TCR & Codes Resistance Tolerance (code) Standard Values Thermal Impedance Ambient Temperature Range C/Watt C 110 Watts Ohms Volts Volts ppm/C % Watts Ohms Volts Volts ppm/C % A 0.125 1R to 1M 200 280 Watts Ohms Volts Volts ppm/C % H 0.063 1R to 1M 200 280 0.25 1R to 4M 350 500 0.5 1R to 4M 350 500 5(V), 10(T), 15(Y), 25(D), 50(C) & 100(Z) 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1 (F) J 0.125 1R to 1M 200 280 K 0.25 1R to 1M 250 350 K 0.25 10R to 1M 250 350 L 0.5 10R to 1M 350 500 See resistance restrictions C 0.5 10R to 1M 350 500 See resistance restrictions Any value to order 1.0 1R to 10M 500 700 See resistance restrictions RC65 RC70 Notes 15(Y), 25(D), 50(C) & 100(Z) 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F) B 0.25 1R to 1M 250 350 B 0.25 10R to 1M 250 350 15(T), 25(E) & 50(C) 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F) E24, E96 Preferred 70 -55 to +155 60 General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print. (c) IRC Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com A subsidiary of TT electronics plc RC Series Issue December 2008 Sheet 1 of 3 Precision Metal Film Resistor Physical Data Dimensions (mm) & Weight (g) Type RC55 RC65 RC70 L Max 7.2 10.0 15.5 D F Max Min 2.5 3.7 5.5 30 30 30 D Nom 0.6 0.6 0.8 PCB Mounting Centers 10.2 12.7 18.4 Min Bend Radius 0.6 0.6 1.2 Wt. Nom 0.24 0.40 1.15 d D L f Construction A metal film is deposited onto a high quality ceramic former. Nickel-plated steel caps are force fitted to the former and termination wires are welded to the caps. The resistor is adjusted to value by a helical cut in the film and the body is protected with a specially formulated epoxy coating. Marking Type reference, TCR code, resistance value and tolerance code. The resistance values conform to IEC 62. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Terminations Material Strength Solderability 100% tin plated over copper wire The teminations meet the requirements of IEC 68.2.21. The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2. Environmental Data CECC 40101-004 Requirements Load At Commercial Rating: 1000 Hours At 70C Load At CECC Rating: 1000 Hours At 70C Dry Heat: 1000 Hours at 155C Shelf Life: 12 Months at Room Temperature Derating From Rated Power At 70C Short Term Overload Climatic Climatic Category Long Term Damp Heat Temperature Rapid Change Resistance To Solder Heat Vibration and Bump Noise (in a decade of frequency) Voltage Coefficient Of Resistance Note: CECC 40101-804 Requirements --0.5 0.5 Not specified 50% at 125C 0.1 0.5 55/155/56 0.5 0.1 0.1 0.1 Not specified Not specified *Actual Performance Maximum 0.3 0.3 **1.0 0.1 --0.1 0.3 55/155/56 0.5 **0.2 0.06 0.06 1.0 --Typical 0.1 0.05 0.15 0.03 --0.02 0.1 --0.1 0.05 0.03 0.02 0.1 <1 R% R% R% R% R% R% R% R% R% R% V/V ppm/V --0.5 0.5 Not specified Zero at 155C 0.1 0.5 55/155/56 0.5 0.1 0.1 0.1 Not specified Not specified *An 0.01 ohm addition to be added to the performance claims of all resistors <10R. ** All products within the specified approved range meet CECC requirements. (c) IRC Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com RC Series Issue December 2008 Sheet 2 of 3 Precision Metal Film Resistor Table of Resistance Restrictions Tolerance TCR ppm/C 5 10 15 25 50 100 RC55 0.05% 10 to 500K 10 to 1M 10 to 1M 10 to 1M 10 to 1M 10 to 1M 0.1 - 0.25% 10 to 500K 10 to 1M 5 to 1M 5 to 2M 5 to 2M 1 to 2M 0.5 - 1% 1 to 500K 1 to 1M 1 to 1M 1 to 2M 1 to 4M 1 to 4M 0.05% 10 to 1M 10 to 1M 10 to 1M 10 to 1M 10 to 1M RC65 0.1 - 0.25% 10 to 1M 5 to 1M 5 to 2M 5 to 2M 1 to 2M 0.5 - 1% 1 to 500K 1 to 1M 1 to 1M 1 to 2M 1 to 4M 1 to 4M 0.05% 10 to 1M 10 to 1M 10 to 1M 10 to 1M 10 to 1M 10 to 500K 10 to 500K RC70 0.1 - 0.25% 10 to 1M 10 to 2M 10 to 5M 5 to 10M 1 to 10M 0.5 - 1% 1 to 750K 1 to 1M 1 to 2M 1 to 5M 1 to 10M 1 to 10M 10 to 750K 10 to 750K Application Notes Matched Sets and Networks Welwyn has many years experience in the supply of matched set of precision resistors Resistors can be supplied matched for tolerance and TCR down to 0.02% and 2 ppm/C, either as separate resistors or pre-assembled and encapsulated within a plastic box. The individual resistors within a set or module can be manufactured with a tolerance of 0.05% and TCR of 5 ppm/C. A low inductance version is available at 1% tolerance. For low inductive version add suffix N. Packaging The standard method of packaging RC55 resistors is taped in ammo packs. Taped resistors on reel or loose packed components can also be supplied by special request. The standard packaging for RC65 and RC70 resistors is loose in boxes. By special request the RC65 components can also be supplied taped on reel or in ammo pack. In the case of tape packed components the usable lead length is reduced by the width of the tape. 5 Ordering Data Prefix RC55LF, RC65LF, RC70LF RC - RC55LF C 6K8 B B f1 Type f2 52 TCR Code V = 5 ppm/C, T = 10 ppm/C, Y = 15 ppm/C D = 25 ppm/C, C = 50 ppm/C 6 6 Body location: f1 - f2 1.4mm Resistance Value Ex: 6K8 = 6.8K Standard Quantities Per Package Type Small box Large box Reel Large ammo RC55 250 1000 5000 1000 RC65 125 500 2500 1000 RC70 25 250 - Tolerance F = 1%, D = 0.5%, C = 0.25%, B = 0.1%, A = 0.05% Packaging A = Ammo Pack; B = Bulk; T = Tape and Reel For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. (c) IRC Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com RC Series Issue December 2008 Sheet 3 of 3 |
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