Product Overview
Vishay Dale RN55D 12.1k Ohm ±1% 0.125W Metal Film Resistor
Condition
Unused new old stock (NOS). Straight axial wire leads with legible body markings: RN55D 1212F and DALE 0521.
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Product Overview
Metal film axial resistor manufactured by Vishay Dale under part number RN55D1212F, providing 12.1 kΩ resistance with ±1% tolerance. Built to military specification standards, this component delivers stable, low-noise performance suitable for precision instrumentation, test equipment maintenance, and audio circuitry.
Key Features
- Resistance: 12.1 kΩ (12,100 Ω)
- Tolerance: ±1% (code F)
- Power rating: 0.125 W (1/8 W) at 125°C
- Temperature coefficient: ±100 ppm/°C (characteristic D)
- Working voltage: 200 V maximum
- Specification: Conforms to MIL-PRF-10509 / MIL-R-10509 type RN55
- Lead type: Straight axial wire leads
Applications
- Analog signal conditioning, precision dividers, and audio signal paths
- Bench instrument calibration and vintage electronic test equipment repair
- Maker prototyping and restoration projects requiring tight-tolerance passives
Frequently Asked Questions
What are the physical dimensions of the resistor body?
The cylindrical body measures 6.1 mm in length and 2.29 mm in diameter with standard axial leads.
What military specification does the RN55 designation indicate?
The RN55 designation conforms to MIL-PRF-10509 (MIL-R-10509) military specifications, characteristic D, indicating a tight-tolerance metal film construction with a ±100 ppm/°C temperature coefficient.
Why buy individual resistors instead of a bulk reel or pack?
Buying individually allows you to get the exact count required for a repair or build without paying for surplus packaging or excess inventory. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, qualify for free shipping at $28, and leave our Idaho warehouse the same or next business day.
Precision down to the single digit is what turns a drifting circuit back into a dependable tool. Bend the leads, solder it clean, and let the measurement speak for itself.
