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| Resistors Metal film resistors CRB20 (3.2 1.9 size: 1 / 5W) CRB20 resistors are the same size as our small carbon film resistors and are coated with a nickel-chromium film. The dielectric is applied by means of vacuum deposition, which ensures high stability and reliability. ROHM resistors have achieved ISO-9001 certification. Design and specifications are subject to change without notice. Carefully check the specification sheet supplied with the product before using or ordering it. FFeatures 1) Competitively priced for use in consumer goods. 2) Of the same dimensions as our small carbon film resistors. Superb space economy. 3) Long used by the biggest manufacturers in Europe and America. Renowned in the market for reliability. FRatings 4) Current noise countermeasures are not required. The noise level has been checked using a third-harmonic distortion meter (which offers greater accuracy than current noise instruments). 1 Resistors FCharacteristics CRB20 2 Resistors CRB20 3 Resistors FExternal dimensions (Units: mm) CRB20 Spot welding ensures a solid, durable connection between the terminal and the terminal wire. (6) Terminal wires: Solder-plated copper wire Can be soldered effectively even after a long time. (7) Protective film For resistors of 10 ohms or more, a special inorganic material guarantees the long-term stability of the dielectric film. (8) Under coating: Phenolic resin The dielectric film is protected by a coat of high-purity phenolic resin. (9) Outer coating: Epoxy resin (color: light brown) This coating offers superior resistance to heat, the elements, and solvents, and is a good insulator. It is also very safe, meeting the UL94V-0 standard for nonflammability. (10) Markings: Color coding using thermo-hardened paint Markings offer outstanding resistance to solvents and chemicals, and do not fade. FReference standards G JIS C 5202 Regulations on test methods for fixed resistors G JIS C 5003 Regulations on test methods for malfunction rates FOther reference standards CRB20 G MIL-R-10509 RN55 Resistors, fixed, film (high stability) G MIL-R-55182 RNR55 Resistors, fixed, film, established reliability G MIL-R-22684 RL07 Resistors, fixed, film, insulated G MIL-R-39017 RLR07 Resistors, fixed, film, established reliability G EIA-RS-196 Fixed film resistors-precision and semi-precision G DIN-44061-0207 Resistors, fixed, lacquered, metal film, high stability, with low temperature coefficient, with axial leads FStructure and materials (1) Substrate: Alumina magnetic rod Alumina is superior to regular mullite or forsterite with respect to mechanical strength, thermal conductivity, and thermal stability. (2) Resistive elements Nickel and nickel-chromium film of high uniformity and reliability. (3) Cutting groove The groove is cut to a uniform depth and width across the whole element, and there are no chips or cracks in the finished product. (4) Terminals: Tin-plated copper, steel cap This material provides a solid physical and electrical connection. (5) Connections: Spot-welded 4 Resistors FProduct designation CRB20 FElectrical characteristics 5 Resistors CRB20 6 |
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