RN55C2503FRE6 Equivalent & Substitute Parts

Part Overview

The RN55C2503FRE6 is a 250 kOhm, 1/8W through-hole axial resistor manufactured by Vishay Dale. This metal film resistor features flame retardant coating, military-grade construction, and moisture resistance, meeting MIL-R-10509/7 specifications. The part is currently active in production with 1034 units in stock. Substitute parts are identified to address packaging format changes, tolerance upgrades, or inventory availability while maintaining core electrical and mechanical compatibility.

Substiute Parts

RN55C2503FRE6

Vishay DaleIn Stock: 1102RN55C2503FRE6 Datasheet

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RN55E2503BB14

Vishay DaleIn Stock: 1410RN55E2503BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55C2503FRE6 is determined by the following critical parameters:

• Resistance Value: Must be 250 kOhms
• Power Rating: Must be 0.125W (1/8W)
• Package Type: Must be Axial through-hole
• Physical Dimensions: Must be 0.090" Dia × 0.240" L
• Composition: Must be Metal Film
• Operating Temperature Range: Must support -65°C to 175°C
• Series Compliance: Must meet MIL-R-10509/7 specifications

The RN55E2503BB14 qualifies as a substitute because it maintains all critical electrical and mechanical parameters. Variations in tolerance (±0.1% vs ±1%), temperature coefficient (±25ppm/°C vs ±50ppm/°C), and packaging format (Bulk vs Tape & Reel) represent upgrades or format changes that do not compromise functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C2503FRE6 and RN55E2503BB14 are active production parts from Vishay Dale meeting MIL-R-10509/7 military specifications. Selection between these parts depends on application requirements and procurement constraints:

RN55C2503FRE6 is appropriate when tape and reel packaging is required for automated assembly processes or when the standard ±1% tolerance specification is sufficient for circuit design requirements.

RN55E2503BB14 provides improved tolerance performance (±0.1% vs ±1%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C), making it suitable for precision applications requiring tighter component stability. This part is supplied in bulk packaging format.

Both parts maintain identical physical dimensions, power ratings, operating temperature ranges, and military-grade construction features. Neither part is RoHS compliant; both are REACH Affected and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can RN55E2503BB14 be used as a direct replacement for RN55C2503FRE6?

A: Yes. Both parts share identical resistance values, power ratings, physical dimensions, operating temperature ranges, and axial package configurations. The RN55E2503BB14 offers improved tolerance and temperature coefficient specifications, representing an upgrade path rather than a compromise.

Q: What is the difference between Tape & Reel and Bulk packaging?

A: Tape & Reel (TR) packaging is designed for automated pick-and-place assembly equipment, while Bulk packaging is supplied loose or in standard containers for manual assembly or lower-volume applications. Electrical and mechanical specifications remain identical between packaging formats.

Q: Are there any compliance differences between these parts?

A: Both parts share identical RoHS status (non-compliant), REACH status (Affected), and ECCN classification (EAR99). No compliance advantages exist between the two options.

Q: Does the improved tolerance of RN55E2503BB14 affect circuit compatibility?

A: The ±0.1% tolerance of RN55E2503BB14 is a tighter specification than the ±1% tolerance of RN55C2503FRE6. In applications where the original ±1% tolerance was acceptable, the ±0.1% tolerance will not cause incompatibility. Applications requiring precision matching or tight tolerance bands may benefit from the improved specification.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates how much the resistance value changes with temperature. The RN55E2503BB14 exhibits lower drift (±25ppm/°C) compared to RN55C2503FRE6 (±50ppm/°C). Both remain within acceptable ranges for military-grade applications across the -65°C to 175°C operating window.