RN55D2552FRE6 Equivalent & Substitute Parts

Part Overview

The RN55D2552FRE6 is a 25.5 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 RN55 military-grade series, featuring flame retardant coating, moisture resistance, and safety-rated construction per MIL-R-10509/7 specification. The part is currently active in production with 945 units in stock. Substitute parts are identified to provide alternatives with enhanced electrical performance characteristics while maintaining mechanical and environmental compatibility.

Substiute Parts

RN55D2552FRE6

Vishay DaleIn Stock: 1025RN55D2552FRE6 Datasheet

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RN55E2552BRE6

Vishay DaleIn Stock: 2021RN55E2552BRE6 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RN55E2552BRE6 qualifies as a direct substitute based on the following critical parameters:

Resistance value match: Both parts specify 25.5 kOhms, ensuring identical DC circuit behavior.

Power rating equivalence: Both rated at 0.125W (1/8W), supporting identical thermal dissipation requirements.

Package compatibility: Both use axial through-hole configuration with identical physical dimensions (0.090" Dia x 0.240" L), enabling direct board-level replacement without layout modification.

Military series continuity: Both belong to the RN55 military series under MIL-R-10509/7, maintaining compliance with military procurement standards.

Environmental specifications: Both operate across -65°C to 175°C and feature flame retardant coating and moisture resistance, ensuring equivalent environmental performance.

The substitute part RN55E2552BRE6 provides enhanced tolerance (±0.1% versus ±1%) and improved temperature coefficient (±25ppm/°C versus ±100ppm/°C), representing an upgrade in precision characteristics while maintaining full mechanical and functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both RN55D2552FRE6 and RN55E2552BRE6 are active production components from Vishay Dale with identical product status and compliance profiles. Selection between these parts depends on circuit precision requirements:

The RN55D2552FRE6 (±1% tolerance, ±100ppm/°C) is suitable for general-purpose military applications where standard tolerance and temperature stability are acceptable.

The RN55E2552BRE6 (±0.1% tolerance, ±25ppm/°C) is appropriate for precision circuits requiring tighter resistance tolerance and superior temperature coefficient performance. This substitute provides enhanced accuracy without compromising mechanical compatibility or environmental ratings.

Both parts maintain identical RoHS non-compliant and REACH Affected status, requiring equivalent compliance documentation for procurement and deployment. Inventory availability shows 1994 units of the substitute part versus 945 units of the main part, providing supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can RN55E2552BRE6 directly replace RN55D2552FRE6 in existing designs?

A: Yes. Both parts share identical resistance value (25.5 kOhms), power rating (0.125W), axial package configuration, and physical dimensions (0.090" Dia x 0.240" L). Direct board-level substitution is mechanically and electrically compatible without layout modification.

Q: What are the key differences between these two parts?

A: The substitute part RN55E2552BRE6 provides tighter tolerance (±0.1% versus ±1%) and improved temperature coefficient (±25ppm/°C versus ±100ppm/°C). All other specifications, including power rating, operating temperature range, and military series classification, remain identical.

Q: Are both parts suitable for military applications?

A: Yes. Both RN55D2552FRE6 and RN55E2552BRE6 are classified as military-grade components within the RN55 series and comply with MIL-R-10509/7 specification. Both feature flame retardant coating and moisture resistance required for military deployment.

Q: What is the impact of tolerance differences on circuit performance?

A: The RN55D2552FRE6 with ±1% tolerance allows resistance variation of ±255 ohms from the nominal 25.5 kOhms value. The RN55E2552BRE6 with ±0.1% tolerance restricts variation to ±25.5 ohms. Selection depends on whether the circuit design can accommodate the wider tolerance band of the standard part.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts share identical RoHS non-compliant and REACH Affected status. No compliance differentiation exists between the two parts; equivalent documentation and procurement procedures apply to both.

Q: What is the temperature coefficient significance?

A: Temperature coefficient indicates resistance change per degree Celsius. The RN55D2552FRE6 exhibits ±100ppm/°C change, while RN55E2552BRE6 exhibits ±25ppm/°C change. For circuits operating across the full -65°C to 175°C range, the substitute part provides superior resistance stability across temperature extremes.