RN55C4002FRE6 Equivalent & Substitute Parts

Part Overview

The RN55C4002FRE6 is a 40 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. Manufactured by Vishay Dale under the military-grade RN55 series per MIL-R-10509/7 specification, this component features flame retardant coating, moisture resistance, and safety-rated construction. The part maintains active product status with 770 units currently in stock. Substitute parts may be required due to packaging format availability, tolerance requirements, or supply chain considerations while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55C4002FRE6

Vishay DaleIn Stock: 813RN55C4002FRE6 Datasheet

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RN55E4002BB14

Vishay DaleIn Stock: 926RN55E4002BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN55C4002FRE6 is permissible with the RN55E4002BB14 based on the following criteria:

Matching Parameters (Substitution Basis):

• Resistance value: 40 kOhms (identical)
• Power rating: 0.125W, 1/8W (identical)
• Composition: Metal Film (identical)
• Package type: Axial (identical)
• Physical dimensions: 0.090" Dia × 0.240" L (identical)
• Operating temperature range: -65°C to 175°C (identical)
• Series classification: Military, MIL-R-10509/7, RN55 (identical)
• Features: Flame Retardant Coating, Military, Moisture Resistant, Safety (identical)

Differing Parameters:

• Tolerance: RN55C4002FRE6 is ±1%; RN55E4002BB14 is ±0.1%
• Temperature coefficient: RN55C4002FRE6 is ±50ppm/°C; RN55E4002BB14 is ±25ppm/°C
• Packaging format: RN55C4002FRE6 is Tape & Reel (TR); RN55E4002BB14 is Bulk

The RN55E4002BB14 represents an upgrade path with tighter tolerance and improved temperature stability while maintaining all critical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C4002FRE6 and RN55E4002BB14 maintain active product status and identical compliance classifications (RoHS non-compliant, REACH Affected). Selection between these parts depends on application-specific requirements:

The RN55C4002FRE6 is appropriate for applications requiring tape and reel packaging format with standard ±1% tolerance specifications.

The RN55E4002BB14 is suitable for applications demanding tighter tolerance control (±0.1%) and improved temperature coefficient stability (±25ppm/°C versus ±50ppm/°C), while accommodating bulk packaging requirements. This substitute provides enhanced precision characteristics within the same military-grade RN55 series framework.

Both parts satisfy identical electrical performance envelopes for resistance value, power dissipation, and operating temperature range. Physical footprint compatibility ensures direct substitution in circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can RN55E4002BB14 directly replace RN55C4002FRE6 in existing designs?

A: Yes. Both parts share identical resistance value (40 kOhms), power rating (0.125W), axial package configuration, and physical dimensions (0.090" Dia × 0.240" L). The RN55E4002BB14 offers improved tolerance (±0.1% versus ±1%) and temperature coefficient (±25ppm/°C versus ±50ppm/°C), making it functionally compatible and electrically superior for direct substitution.

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

A: The RN55E4002BB14 provides tighter tolerance specification and lower temperature coefficient compared to the RN55C4002FRE6. Additionally, packaging format differs: RN55C4002FRE6 is supplied in Tape & Reel format while RN55E4002BB14 is supplied in Bulk format.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS non-compliant and REACH Affected status. Both are manufactured by Vishay Dale under the military-grade MIL-R-10509/7 specification within the RN55 series.

Q: Does the packaging format change affect circuit board assembly?

A: Packaging format (Tape & Reel versus Bulk) affects procurement and handling procedures but does not impact electrical performance or physical installation characteristics. The component itself remains identical in form factor and footprint.

Q: Which part should be selected for precision-critical applications?

A: The RN55E4002BB14 is appropriate for applications requiring tighter tolerance control and improved temperature stability due to its ±0.1% tolerance and ±25ppm/°C temperature coefficient specifications.