Product Overview
Vishay Dale RN55E2551FJ 2.55kΩ 1/8W ±25 ppm/°C Metal Film Resistor
Condition
Unused new old stock. Light-colored axial-leaded body with legible printed markings reading RN55 E and 2551. Clean, straight wire leads. Sourced from legacy surplus inventory. Evaluation: Visual inspection only. Function testing not performed.
Ships same or next business day from our Idaho warehouse. Honest pricing, no nonsense.
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Product Overview
Vishay Dale RN55E2551FJ is an axial-leaded precision metal film resistor built to MIL-R-10509, Type RN55 standards. The military value code 2551 decodes to a 2.55 kΩ (2550 Ω) resistance rating. Characteristic E indicates a temperature coefficient of ±25 ppm/°C, providing exceptional thermal stability for precision analog circuitry, metrology, and test instrumentation. Rated at 1/8 watt (0.125 W) at 70°C with standard tin-lead electroplated leads.
Key Features
- Resistance value: 2.55 kΩ (2550 Ω)
- Tolerance: ±1.0% (Tolerance code: F)
- Temperature coefficient: ±25 ppm/°C (Characteristic E)
- Power rating: 0.125 W (1/8 W) at 70°C
- Maximum working voltage: 200 V
- Military specification: MIL-R-10509 qualified, Type RN55
- Mounting type: Through-hole axial leads
- Lead finish: Tin-lead (Sn/Pb) electroplated copper
Applications
- Calibrating vintage analog test gear where tight temperature stability prevents measurement drift
- Building low-noise discrete audio preamplifiers and filter networks requiring low-tolerance metal film parts
- Repairing legacy military and communications equipment specifying authentic MIL-R-10509 components
- Breadboarding precision reference dividers and metrology experiments on the maker bench
Frequently Asked Questions
What does the Characteristic E designation mean on an RN55 resistor?
Under MIL-R-10509 specifications, Characteristic E defines a temperature coefficient of ±25 ppm/°C. This provides significantly tighter thermal drift stability than standard industrial resistors or Characteristic D (±100 ppm/°C) ratings.
What is the lead composition of this resistor?
These resistors feature traditional tin-lead (Sn/Pb) electroplated copper leads standard for military-specification MIL-R-10509 components.
Why buy individual precision resistors here instead of a random surplus grab bag?
Surplus lots often bury odd values in bulk grabs, leaving you sorting through parts you will never need. We offer specific, verified values piece-by-piece so you get exactly the count required for your bench build or restoration. Buying more pieces costs less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, free once your order passes $28, and leave our Idaho warehouse the same or next business day.
Built for systems where thermal drift was unacceptable and every tenth of a percent counted. Drop this steady axial unit in place and keep your precision circuit running true.
