【Long-standing bestseller with a long track record】 RD/RDM series carbon film fixed resistors | RoHS compliant and excellent cost performance
"RD/RDM" is a versatile lead-type resistor that balances high quality and ease of implementation, continuously chosen for many years. It boasts a strong track record of being adopted in various industrial and consumer devices over the years. In addition to the standard size "RD," we offer a compact version "RDM" that supports high-density mounting, contributing to the optimal design of various power supplies and control boards. 【Features of RD/RDM】 1. 【High Reliability and Proven Track Record】 A long-selling product widely used across various fields, demonstrating high quality stability. 2. 【Supports High-Density Board Design】 In addition to the standard product (RD), we offer a compact version (RDM) that downsizes to the same power rating. 3. 【Compliance with Environmental Regulations】 Specifications compliant with the RoHS directive, considering environmental impact. 4. 【Supports Various Mounting Styles】 Options for axial and radial taping, as well as various forming (such as kink processing), allowing for shape selection based on board mounting requirements. 5. 【Zero Ohm Resistors Available】 We also offer zero ohm products with a resistance of less than 10mΩ, ideal for circuit crossings and jumper applications, available in the same external dimensions. *Catalogs, specifications, and requests for evaluation samples can be accessed via the URL below.
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basic information
Rated power: 0.166W to 0.5W Maximum operating voltage: 200V to 350V Maximum overload voltage: 400V to 700V Resistance value range: 1 Ω to 5.1M Ω (E24 series) * Zero-ohm products are below 10mΩ Resistance value tolerance: ±2% (G), ±5% (J) External dimensions (L: length): 3.2 (+0.2/-0.0) mm to 8.5 (±0.5) mm External dimensions (D: diameter): 1.85 (±0.2) mm to 2.8 (±0.3) mm Lead wire diameter (ϕd): 0.45 (±0.05) mm to 0.7 (±0.05) mm Resistance temperature coefficient (T.C.R): -1500 to +350 ppm/°C (depending on resistance value range) Overload (short time): Resistance value change rate ≦ ±(0.75% + 0.05Ω) Solder heat resistance: Resistance value change rate ≦ ±(0.5% + 0.05Ω) Durability (70°C 1000h): Resistance value change rate ≦ ±(2.0% to 3.0% + 0.05Ω) * Catalog requests, specification downloads, and evaluation sample requests can be accessed from the above URL.
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Applications/Examples of results
It is used in a wide variety of electronic and electrical devices, including power conversion circuits and control power supplies, as well as current limiting and voltage divider circuits. • Power supply and power conversion equipment o Feedback, protection, and limiting circuits for switching power supplies o Bias circuits and control boards for inverter circuits o Control sections and input/output circuits for AC adapters • Industrial and FA control equipment o Signal processing circuits for various industrial controllers, PLCs, and sensor devices o Jumper wiring and common circuit sections (utilizing zero-ohm components) on control boards • Consumer and home appliances o Power boards and main control boards for home appliances (AV equipment, white goods) *Catalog requests, specification downloads, and evaluation sample requests can be accessed from the above URL.
Company information
Our company has developed as a specialized manufacturer of electronic parts, specifically resistors, in an environment overlooking the Central and Southern Alps. Since our establishment in 1960, we have upheld the management philosophy of "creating reliable, high-quality, valuable products to contribute to society," and based on our extensive experience and achievements, we manufacture and sell numerous excellent products: resistors. In the rapidly evolving electrical and electronics industry, we strive for continuous research and development, equipped with both "speed and flexibility" to adapt to the changing times.
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