RN65C4023FRE6 Equivalent & Substitute Parts

Part Overview

The RN65C4023FRE6 is a 402 kOhms ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration. Manufactured by Vishay Dale under the military-grade RN65 series (MIL-R-10509/2), this component features flame retardant coating, moisture resistance, and safety certification suitable for military and high-reliability applications. The part is currently active in production with 719 units in stock. Substitute parts may be required due to inventory constraints, application-specific power rating requirements, or tolerance specifications.

Substiute Parts

RN65C4023FRE6

Vishay DaleIn Stock: 806RN65C4023FRE6 Datasheet

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RN70C4023BB14

Vishay DaleIn Stock: 1214RN70C4023BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN65C4023FRE6 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 402 kOhms
• Composition: Metal Film
• Package type: Axial
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -65°C to 175°C
• Military classification and flame retardant features

Allowable Variation Parameters:

• Tolerance: May be tighter (lower tolerance value acceptable)
• Power rating: May be higher (higher wattage acceptable for same physical package)
• Packaging format: Bulk or Tape & Reel formats are interchangeable for component-level substitution

The RN70C4023BB14 qualifies as a direct substitute based on these criteria. It maintains identical resistance, composition, package geometry, temperature characteristics, and military-grade specifications while offering improved tolerance (±0.1% versus ±1%) and increased power rating (0.75W versus 0.5W).

Parameter Comparison

Engineering Selection Recommendations

The RN70C4023BB14 is a qualified substitute for the RN65C4023FRE6 based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical resistance values, temperature coefficients, and operating temperature ranges. The substitute's tighter tolerance (±0.1%) provides enhanced precision compared to the original specification (±1%), making it suitable for applications requiring improved accuracy without circuit redesign.

Power Handling: The RN70C4023BB14 provides 50% higher power dissipation capability (0.75W versus 0.5W) while maintaining identical physical dimensions. This enhancement allows operation in higher-power applications or provides thermal margin in existing designs.

Military and Compliance Status: Both parts comply with MIL-R-10509 military specifications and share identical flame retardant, moisture-resistant, and safety features. Both are RoHS non-compliant and REACH Affected, maintaining equivalent regulatory status.

Physical Integration: Identical axial package dimensions (0.180" Dia x 0.562" L) ensure direct mechanical compatibility in PCB layouts and through-hole mounting applications without modification.

Inventory Consideration: The RN70C4023BB14 has higher stock availability (1152 units versus 719 units), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the RN70C4023BB14 be used as a direct replacement for the RN65C4023FRE6 in existing designs?

A: Yes. The substitute maintains identical resistance, package geometry, temperature characteristics, and military-grade specifications. The higher power rating and tighter tolerance present no compatibility issues and may improve circuit performance.

Q: What is the significance of the tolerance difference between ±1% and ±0.1%?

A: Tolerance defines the maximum deviation from the nominal resistance value. The RN70C4023BB14's ±0.1% tolerance provides tighter control over resistance accuracy compared to the RN65C4023FRE6's ±1% tolerance. Applications requiring precise resistance values benefit from this improvement.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components measure 0.180" diameter by 0.562" length (4.57mm x 14.27mm). They are mechanically interchangeable in PCB layouts and mounting applications.

Q: Does the higher power rating of the RN70C4023BB14 affect circuit operation?

A: No. Higher power rating indicates greater thermal capacity. The substitute can safely dissipate more heat than the original part, making it suitable for applications with higher power dissipation requirements or providing additional thermal margin in existing designs.

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

A: Tape & Reel packaging is used for automated assembly processes, while Bulk packaging is used for manual assembly or component distribution. For component-level substitution, both formats are compatible; packaging format selection depends on assembly methodology rather than electrical or mechanical compatibility.

Q: Are both parts compliant with current environmental regulations?

A: Both the RN65C4023FRE6 and RN70C4023BB14 are RoHS non-compliant and REACH Affected. They maintain identical regulatory status and are suitable for applications where these specifications are acceptable.

Q: Can the RN65C4023FRE6 be substituted with other 402 kOhm resistors?

A: Substitution requires matching all critical parameters: 402 kOhms resistance, metal film composition, axial package, ±50ppm/°C temperature coefficient, -65°C to 175°C operating range, and military-grade flame retardant features. Only components meeting all these specifications are qualified substitutes.