RN55D4002FRE6 Equivalent & Substitute Parts

Part Overview

The RN55D4002FRE6 is a 40 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 RN55 series, designed to MIL-R-10509/7 specifications with flame retardant coating and moisture-resistant properties. The part is currently active in production with 996 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this resistor category.

Substiute Parts

RN55D4002FRE6

Vishay DaleIn Stock: 1044RN55D4002FRE6 Datasheet

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RN55E4002BB14

Vishay DaleIn Stock: 926RN55E4002BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RN55E4002BB14 qualifies as a substitute for the RN55D4002FRE6 based on the following alignment of critical parameters:

Matching Parameters:

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

Differentiation:

• Tolerance: RN55E4002BB14 provides ±0.1% versus ±1% on the main part
• Temperature Coefficient: RN55E4002BB14 specifies ±25ppm/°C versus ±100ppm/°C on the main part
• Packaging format: RN55E4002BB14 supplied in Bulk versus Tape & Reel (TR) for the main part

The RN55E4002BB14 represents an upgrade path with tighter tolerance and improved temperature stability while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55D4002FRE6 and RN55E4002BB14 maintain active product status with full military specification compliance to MIL-R-10509/7. Selection between these parts depends on application-specific tolerance and temperature stability requirements:

The RN55D4002FRE6 is suitable for applications where ±1% tolerance and ±100ppm/°C temperature coefficient meet circuit performance specifications and where Tape & Reel packaging format is required for automated assembly processes.

The RN55E4002BB14 is appropriate for applications requiring tighter tolerance control at ±0.1% and improved temperature stability at ±25ppm/°C. This substitute provides enhanced precision characteristics while maintaining identical mechanical fit and electrical power handling. Bulk packaging format requires manual handling or alternative feeder systems.

Both parts share identical RoHS non-compliant and REACH Affected compliance status, requiring equivalent regulatory consideration in procurement and application contexts.

Frequently Asked Questions (FAQ)

Q: Can RN55E4002BB14 be used as a direct replacement for RN55D4002FRE6?

A: Yes. Both parts share identical resistance value (40 kOhms), power rating (0.125W), package type (Axial), operating temperature range (-65°C to 175°C), and physical dimensions (0.090" Dia x 0.240" L). The RN55E4002BB14 provides superior tolerance (±0.1% vs ±1%) and temperature coefficient (±25ppm/°C vs ±100ppm/°C) performance.

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

A: The RN55E4002BB14 offers tighter tolerance specification and improved temperature stability compared to the RN55D4002FRE6. Additionally, packaging format differs: RN55D4002FRE6 is supplied in Tape & Reel format while RN55E4002BB14 is supplied in Bulk format.

Q: Are there any compatibility concerns with the axial package configuration?

A: No. Both parts use identical axial package dimensions and termination configuration, ensuring mechanical compatibility with existing PCB layouts and through-hole assembly processes.

Q: Do both parts meet the same military specifications?

A: Yes. Both parts conform to Military series designation and MIL-R-10509/7 specifications with identical flame retardant coating, moisture resistance, and safety features.

Q: What packaging considerations apply when selecting between these parts?

A: The RN55D4002FRE6 is packaged in Tape & Reel (TR) format suitable for automated pick-and-place assembly. The RN55E4002BB14 is supplied in Bulk format, requiring manual handling or alternative feeder configuration for assembly operations.

Q: Are there regulatory compliance differences between these parts?

A: No. Both parts share identical RoHS non-compliant and REACH Affected status, requiring equivalent regulatory treatment in procurement and application documentation.