RN55C3003FR36 Equivalent & Substitute Parts

Part Overview

The RN55C3003FR36 is a 300 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. Manufactured by Vishay Dale, this component is part of the military-grade RN55 series compliant with MIL-R-10509/7 specifications. The part features flame retardant coating, moisture resistance, and safety-rated construction suitable for military and high-reliability applications. As an active product with 936 units in stock, substitute parts may be required for applications demanding tighter tolerance specifications or alternative packaging formats while maintaining equivalent electrical and mechanical performance.

Substiute Parts

RN55C3003FR36

Vishay DaleIn Stock: 952RN55C3003FR36 Datasheet

Current PartRFQ

RN55E3003BB14

Vishay DaleIn Stock: 1415RN55E3003BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55C3003FR36 is determined by the following critical parameters:

• Resistance Value: Must be 300 kOhms
• Power Rating: Must be 0.125W (1/8W)
• Package Type: Must be Axial
• Physical Dimensions: Must be 0.090" Dia x 0.240" L (2.29mm x 6.10mm)
• Composition: Must be Metal Film
• Operating Temperature Range: Must support -65°C to 175°C
• Series Compliance: Must be RN55 series, MIL-R-10509/7 compliant
• Features: Must include Flame Retardant Coating, Military, Moisture Resistant, Safety

The RN55E3003BB14 qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters. Variations in tolerance (±0.1% versus ±1%), temperature coefficient (±25ppm/°C versus ±50ppm/°C), and packaging format (Bulk versus Tape & Reel) represent upgrades in precision and alternative distribution methods rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C3003FR36 and RN55E3003BB14 are active products manufactured by Vishay Dale within the military-grade RN55 series. Selection between these parts depends on application-specific requirements:

The RN55C3003FR36 is appropriate for applications where standard ±1% tolerance and ±50ppm/°C temperature coefficient meet circuit specifications and where Tape & Reel packaging aligns with assembly processes.

The RN55E3003BB14 provides enhanced precision with ±0.1% tolerance and improved temperature stability at ±25ppm/°C, suitable for applications requiring tighter component matching or reduced drift over temperature extremes. Bulk packaging may be preferred for manual assembly or low-volume production runs.

Both parts maintain identical compliance status (RoHS non-compliant, REACH Affected) and military specifications (MIL-R-10509/7). Physical dimensions and thermal operating range are identical, ensuring direct mechanical and thermal compatibility in circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can RN55E3003BB14 directly replace RN55C3003FR36 in existing designs?

A: Yes. Both parts share identical resistance value (300 kOhms), power rating (0.125W), physical dimensions (0.090" Dia x 0.240" L), operating temperature range (-65°C to 175°C), and axial package configuration. The RN55E3003BB14 offers improved tolerance (±0.1% versus ±1%) and temperature coefficient (±25ppm/°C versus ±50ppm/°C), making it a direct upgrade.

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

A: Tape & Reel (TR) packaging is used for automated assembly processes, with components wound on carrier tape for pick-and-place machine compatibility. Bulk packaging contains loose components suitable for manual assembly or applications where automated handling is not required. Electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are there any compliance differences between these parts?

A: No. Both RN55C3003FR36 and RN55E3003BB14 share identical RoHS and REACH compliance status. Both are RoHS non-compliant and REACH Affected, maintaining the same regulatory classification.

Q: What does the temperature coefficient specification mean for circuit performance?

A: Temperature coefficient (ppm/°C) indicates how much the resistance value changes per degree Celsius change in operating temperature. The RN55C3003FR36 has ±50ppm/°C, while RN55E3003BB14 has ±25ppm/°C. Lower temperature coefficient values indicate greater stability across the -65°C to 175°C operating range, reducing resistance drift in temperature-sensitive applications.

Q: Can these parts be used interchangeably in military applications?

A: Yes. Both parts comply with MIL-R-10509/7 military specifications and are part of the RN55 military-grade series. They share identical flame retardant coating, moisture resistance, and safety features required for military applications.