RNR55H2491FSRSL Equivalent & Substitute Parts

Part Overview

The RNR55H2491FSRSL is a 2.49 kOhm ±1% 0.125W (1/8W) through-hole resistor manufactured by Vishay Dale. This military-grade, moisture-resistant metal film axial resistor operates across -65°C to 175°C and complies with MIL-PRF-55182/01 specifications. The part is currently active in production with 757 units in stock. Substitute parts are identified to address packaging format availability, inventory requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

RNR55H2491FSRSL

Vishay DaleIn Stock: 789RNR55H2491FSRSL Datasheet

Current PartRFQ

RNC55H2491FSRE6

Vishay DaleIn Stock: 1505RNC55H2491FSRE6 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNR55H2491FSRSL is determined by the following parameters:

• Resistance value: 2.49 kOhms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Composition: Metal Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -65°C to 175°C
• Package type: Axial
• Physical dimensions: 0.094" Dia x 0.250" L (2.39mm x 6.35mm)
• Number of terminations: 2
• Military compliance: MIL-PRF-55182/01

The identified substitute part RNC55H2491FSRE6 maintains all critical electrical parameters and physical dimensions. The primary difference is packaging format: the main part is supplied in Tape & Reel (TR) format, while the substitute is supplied in Cut Tape (CT) format. Both parts share identical resistance, tolerance, power rating, composition, temperature characteristics, and military specifications.

Parameter Comparison

Engineering Selection Recommendations

Both RNR55H2491FSRSL and RNC55H2491FSRE6 are active production parts from Vishay Dale with identical electrical specifications and military compliance. Selection between these parts should be based on packaging requirements and inventory availability:

• RNR55H2491FSRSL (Tape & Reel format) is suitable for high-volume automated assembly operations requiring continuous reel feeding.
• RNC55H2491FSRE6 (Cut Tape format) is suitable for lower-volume applications, manual assembly, or situations where reel-based packaging is not required.

Both parts are RoHS non-compliant and carry EAR99 ECCN classification. The RNC55H2491FSRE6 includes weldable features as an additional capability. Current inventory shows 1444 units of RNC55H2491FSRE6 available compared to 757 units of RNR55H2491FSRSL.

Frequently Asked Questions (FAQ)

Q: Can RNC55H2491FSRE6 be used as a direct replacement for RNR55H2491FSRSL?

A: Yes. Both parts have identical electrical parameters (2.49 kOhms ±1%, 0.125W, ±50ppm/°C, -65°C to 175°C), identical physical dimensions (0.094" Dia x 0.250" L), and identical military specifications (MIL-PRF-55182/01). The only difference is packaging format: Tape & Reel versus Cut Tape.

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

A: Tape & Reel (TR) packaging supplies components on continuous reels suitable for automated pick-and-place assembly equipment. Cut Tape (CT) packaging supplies components in tape segments, typically used for manual assembly, lower-volume production, or component kitting. Both formats contain the same component.

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

A: No. Both parts comply with MIL-PRF-55182/01, carry identical failure rates (S, 0.001%), and share the same RoHS status (non-compliant). The RNC55H2491FSRE6 includes weldable features, which is an additional capability that does not affect substitution eligibility.

Q: What determines if a part can substitute for the RNR55H2491FSRSL?

A: Substitution is determined by matching resistance value (2.49 kOhms), tolerance (±1%), power rating (0.125W), composition (Metal Film), temperature coefficient (±50ppm/°C), operating temperature range (-65°C to 175°C), package type (Axial), physical dimensions (0.094" Dia x 0.250" L), and military series compliance (MIL-PRF-55182/01).

Q: Can these parts be used interchangeably in circuit designs?

A: Yes, from an electrical and thermal perspective. Both parts deliver identical performance in circuit applications. Assembly process compatibility depends on whether your production equipment supports the packaging format of the selected part.