RN55C2491CBSL Equivalent & Substitute Parts

Part Overview

The RN55C2491CBSL is a 2.49 kOhms ±0.25% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. This component is manufactured by Vishay Dale and complies with military specification MIL-R-10509/7. The part features flame retardant coating, moisture resistance, and safety-rated construction suitable for military and high-reliability applications. As an active product with 682 units in stock, substitute parts may be required for design optimization, inventory management, or enhanced performance specifications.

Substiute Parts

RN55C2491CBSL

Vishay DaleIn Stock: 692RN55C2491CBSL Datasheet

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RN55C2491BB14

Vishay DaleIn Stock: 1304RN55C2491BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN55C2491CBSL is permissible with components that maintain electrical and mechanical compatibility within the following criteria:

Critical Parameters for Substitution:

• Resistance value: 2.49 kOhms (exact match required)
• Power rating: 0.125W minimum (equal or higher acceptable)
• Package type: Axial configuration (mechanical compatibility)
• Composition: Metal film (electrical performance consistency)
• Temperature coefficient: ±50ppm/°C or better
• Operating temperature range: -65°C to 175°C minimum
• Series compliance: MIL-R-10509/7 military specification

The RN55C2491BB14 qualifies as a direct substitute. This part maintains identical resistance, power rating, package configuration, and temperature specifications while offering improved tolerance (±0.1% versus ±0.25%), representing an upgrade in precision without compromising any electrical or mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C2491CBSL and RN55C2491BB14 are active products manufactured by Vishay Dale under the military MIL-R-10509/7 specification. Selection between these parts should be based on tolerance requirements and application precision demands.

The RN55C2491CBSL (±0.25% tolerance) is suitable for applications where standard military-grade precision is acceptable. The RN55C2491BB14 (±0.1% tolerance) provides enhanced precision for circuits requiring tighter component value control. Both parts share identical electrical performance characteristics, thermal behavior, and compliance status. Substitution of RN55C2491CBSL with RN55C2491BB14 represents a performance upgrade with no degradation of specifications.

Frequently Asked Questions (FAQ)

Q: Can RN55C2491BB14 be used as a direct replacement for RN55C2491CBSL?

A: Yes. The RN55C2491BB14 is a direct substitute. Both parts have identical resistance values (2.49 kOhms), power ratings (0.125W), package configurations (axial), temperature coefficients (±50ppm/°C), and operating temperature ranges (-65°C to 175°C). The substitute offers improved tolerance (±0.1% versus ±0.25%).

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

A: The tolerance specification differs. RN55C2491CBSL has ±0.25% tolerance, while RN55C2491BB14 has ±0.1% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts compliant with military specifications?

A: Yes. Both parts comply with MIL-R-10509/7 military specification and are part of the RN55 series. Both are active products with current manufacturing status.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical axial package configuration with the same physical dimensions (0.090" Dia x 0.240" L / 2.29mm x 6.10mm). No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS non-compliant and REACH Affected. Both carry ECCN classification EAR99 and HTSUS code 8533.21.0090.