RN55C3003FRE6 Equivalent & Substitute Parts

Part Overview

The RN55C3003FRE6 is a 300 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. This component is part of the Vishay Dale military-grade RN55 series, featuring flame retardant coating, moisture resistance, and safety-rated construction per MIL-R-10509/7 specification. The part maintains active product status with 740 units currently in stock. Substitute parts are identified when equivalent electrical performance can be achieved with alternative tolerance specifications, packaging formats, or improved temperature coefficient characteristics while maintaining core functional requirements.

Substiute Parts

RN55C3003FRE6

Vishay DaleIn Stock: 807RN55C3003FRE6 Datasheet

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RN55E3003BB14

Vishay DaleIn Stock: 1415RN55E3003BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55C3003FRE6 is determined by the following criteria:

• Resistance Value: Must be 300 kOhms (exact match required)
• Power Rating: Must be 0.125W minimum (1/8W or higher acceptable)
• Composition: Must be metal film construction
• Package Type: Must be axial through-hole configuration
• Physical Dimensions: Must be 0.090" Dia × 0.240" L (2.29mm × 6.10mm)
• Operating Temperature Range: Must support -65°C to 175°C minimum
• Series Compliance: Must be MIL-R-10509/7 qualified military-grade component

The RN55E3003BB14 qualifies as a direct substitute based on these parameters. While it features improved tolerance (±0.1% versus ±1%) and superior temperature coefficient (±25ppm/°C versus ±50ppm/°C), these represent performance enhancements rather than deviations from the core electrical and mechanical requirements. The packaging format differs (Bulk versus Tape & Reel), but this is a logistical consideration that does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both RN55C3003FRE6 and RN55E3003BB14 maintain active product status and are qualified to MIL-R-10509/7 military specification. Selection between these components should be based on application-specific requirements:

The RN55C3003FRE6 is appropriate for applications where standard ±1% tolerance and ±50ppm/°C temperature coefficient meet circuit design specifications and where Tape & Reel packaging aligns with production assembly processes.

The RN55E3003BB14 is appropriate for applications requiring tighter tolerance control (±0.1%) and improved temperature stability (±25ppm/°C), or where Bulk packaging is preferred for inventory management. The enhanced specifications of RN55E3003BB14 do not introduce incompatibility with designs specified for RN55C3003FRE6.

Both components share identical RoHS non-compliance and REACH-affected status, requiring equivalent regulatory handling in supply chain and end-of-life management.

Frequently Asked Questions (FAQ)

Q: Can RN55E3003BB14 be used as a direct replacement for RN55C3003FRE6 in existing designs?

A: Yes. The RN55E3003BB14 meets or exceeds all electrical and mechanical parameters required by RN55C3003FRE6. The tighter tolerance and improved temperature coefficient represent performance enhancements that do not create incompatibility with circuits designed for the original part.

Q: What is the primary difference between these two parts?

A: The RN55E3003BB14 features ±0.1% tolerance versus ±1% for RN55C3003FRE6, and a temperature coefficient of ±25ppm/°C versus ±50ppm/°C. Both parts are identical in resistance value, power rating, package type, and physical dimensions.

Q: Does packaging format affect electrical performance?

A: No. The difference between Tape & Reel (RN55C3003FRE6) and Bulk (RN55E3003BB14) packaging is a logistical consideration only. Electrical and mechanical specifications remain identical.

Q: Are both parts military-qualified?

A: Yes. Both RN55C3003FRE6 and RN55E3003BB14 are qualified to MIL-R-10509/7 specification and feature military-grade construction with flame retardant coating and moisture resistance.

Q: What compliance considerations apply to both parts?

A: Both components are RoHS non-compliant and REACH-affected. Equivalent regulatory handling is required for supply chain management and end-of-life disposition.