RN55E4752FRE6 Equivalent & Substitute Parts

Part Overview

The RN55E4752FRE6 is a 47.5 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. Finding equivalent or substitute parts may be necessary due to inventory constraints, packaging preferences, or tolerance requirements in specific circuit designs.

Substiute Parts

RN55E4752FRE6

Vishay DaleIn Stock: 1008RN55E4752FRE6 Datasheet

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RN55E4752BB14

Vishay DaleIn Stock: 1696RN55E4752BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN55E4752FRE6 is determined by the following critical parameters:

• Resistance Value: Must remain 47.5 kOhms
• Power Rating: Must be 0.125W (1/8W) or higher
• Package Type: Must be Axial configuration
• Physical Dimensions: Must match 0.090" Dia x 0.240" L (2.29mm x 6.10mm)
• Composition: Metal Film construction
• Temperature Coefficient: ±25ppm/°C
• Operating Temperature Range: -65°C to 175°C minimum
• Series Compliance: MIL-R-10509/7 military specification

The RN55E4752BB14 qualifies as a substitute because it maintains all critical electrical and mechanical parameters while offering improved tolerance (±0.1% versus ±1%), different packaging format (Bulk versus Tape & Reel), and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55E4752FRE6 and RN55E4752BB14 maintain Active product status and identical military specification compliance (MIL-R-10509/7). The primary distinction is tolerance specification: the RN55E4752BB14 provides ±0.1% tolerance compared to ±1% in the main part, representing a tighter tolerance grade suitable for precision circuit applications. Both parts share identical RoHS non-compliant and REACH Affected regulatory status. Selection between these parts should be based on tolerance requirements for the specific application and packaging format availability (Tape & Reel versus Bulk).

Frequently Asked Questions (FAQ)

Q: Can RN55E4752BB14 directly replace RN55E4752FRE6 in existing designs?

A: Yes. Both parts maintain identical resistance value (47.5 kOhms), power rating (0.125W), physical dimensions (0.090" Dia x 0.240" L), temperature coefficient (±25ppm/°C), and operating temperature range (-65°C to 175°C). The RN55E4752BB14 offers superior tolerance (±0.1% versus ±1%), making it functionally compatible and electrically superior for direct substitution.

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

A: Tape & Reel (TR) packaging is used for automated assembly processes and provides components wound on continuous tape for pick-and-place equipment. Bulk packaging contains loose components suitable for manual assembly or small-quantity applications. Both formats contain identical components; packaging selection depends on manufacturing process requirements.

Q: Are both parts suitable for military applications?

A: Yes. Both RN55E4752FRE6 and RN55E4752BB14 comply with MIL-R-10509/7 military specification and feature flame retardant coating, moisture resistance, and safety-rated construction appropriate for military and high-reliability applications.

Q: Does the improved tolerance of RN55E4752BB14 affect circuit performance?

A: The ±0.1% tolerance of RN55E4752BB14 provides tighter resistance value control compared to the ±1% tolerance of RN55E4752FRE6. This improvement is beneficial in precision analog circuits, measurement instrumentation, and applications where resistance accuracy directly impacts circuit performance. For general-purpose applications, both tolerance grades are functionally equivalent.

Q: What regulatory compliance applies to both parts?

A: Both parts are RoHS non-compliant and REACH Affected. Regulatory compliance status is identical between the main part and substitute, requiring no design or procurement modifications related to environmental regulations.