RN55D3003FRE6 Equivalent & Substitute Parts

Part Overview

The RN55D3003FRE6 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 765 units in stock, substitute parts may be required for applications demanding tighter tolerance specifications or alternative packaging formats while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55D3003FRE6

Vishay DaleIn Stock: 829RN55D3003FRE6 Datasheet

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RN55E3003BB14

Vishay DaleIn Stock: 1415RN55E3003BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN55D3003FRE6 is determined by strict equivalence across the following parameters:

• Resistance value: 300 kOhms (exact match required)
• Power rating: 0.125W (1/8W) (exact match required)
• Package type: Axial (exact match required)
• Physical dimensions: 0.090" Dia × 0.240" L (exact match required)
• Composition: Metal Film (exact match required)
• Operating temperature range: -65°C to 175°C (exact match required)
• Series compliance: MIL-R-10509/7, RN55 (exact match required)

The RN55E3003BB14 qualifies as a substitute part because it maintains all critical electrical and mechanical parameters while offering improved tolerance specification (±0.1% versus ±1%) and superior temperature coefficient performance (±25ppm/°C versus ±100ppm/°C). The substitute differs only in packaging format (Bulk versus Tape & Reel) and tolerance/temperature coefficient characteristics, which represent enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55D3003FRE6 and RN55E3003BB14 maintain active product status and identical compliance profiles regarding RoHS and REACH regulations. Selection between these parts depends on application-specific requirements:

The RN55D3003FRE6 is appropriate for applications where standard ±1% tolerance and ±100ppm/°C temperature coefficient performance are acceptable, with preference for Tape & Reel packaging for automated assembly processes.

The RN55E3003BB14 is suitable for applications requiring tighter tolerance control (±0.1%) and improved temperature stability (±25ppm/°C), with Bulk packaging suitable for manual assembly or lower-volume production environments. Both parts satisfy MIL-R-10509/7 military specifications and maintain identical thermal operating ranges and physical form factors.

Frequently Asked Questions (FAQ)

Q: Can RN55E3003BB14 be used as a direct replacement for RN55D3003FRE6 in existing designs?

A: Yes. Both parts maintain identical resistance value (300 kOhms), power rating (0.125W), axial package configuration, physical dimensions (0.090" Dia × 0.240" L), and operating temperature range (-65°C to 175°C). The RN55E3003BB14 offers improved tolerance (±0.1% versus ±1%) and temperature coefficient (±25ppm/°C versus ±100ppm/°C), making it functionally compatible and performance-enhanced for direct substitution.

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

A: The primary differences are tolerance specification, temperature coefficient performance, and packaging format. The RN55E3003BB14 provides tighter tolerance and superior temperature stability, while the RN55D3003FRE6 is supplied in Tape & Reel format versus Bulk packaging.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: No. Both parts share identical physical dimensions (0.090" Dia × 0.240" L), axial lead configuration, and two-termination design. They are mechanically interchangeable in PCB layouts and through-hole assembly processes.

Q: Do both parts comply with the same military specifications?

A: Yes. Both parts are manufactured to MIL-R-10509/7 specifications and are part of the Vishay Dale RN55 military-grade resistor series. Both maintain identical feature sets including flame retardant coating, moisture resistance, and safety construction.

Q: Which packaging format should be selected for production?

A: Tape & Reel (RN55D3003FRE6) is preferred for automated pick-and-place assembly operations. Bulk packaging (RN55E3003BB14) is suitable for manual assembly, prototyping, or lower-volume applications where automated handling is not required.