RNC55H4991FPRSL Equivalent & Substitute Parts

Part Overview

The RNC55H4991FPRSL is a 4.99 kOhms ±1% metal film axial through-hole resistor rated at 0.125W (1/8W) manufactured by Vishay Dale. This component is part of the Military MIL-PRF-55182/01 RNC55 series and features moisture-resistant, weldable construction suitable for military and high-reliability applications. The part is currently active in production with 941 pieces in stock. Substitute parts are necessary to accommodate different packaging requirements, tolerance specifications, and inventory availability across procurement channels.

Substiute Parts

RNC55H4991FPRSL

Vishay DaleIn Stock: 1020RNC55H4991FPRSL Datasheet

Current PartRFQ

RNC55H4991FSRE6

Vishay DaleIn Stock: 5010RNC55H4991FSRE6 Datasheet

DirectRFQ

RNC55H4991BSB14

Vishay DaleIn Stock: 1718RNC55H4991BSB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNC55H4991FPRSL is determined by the following critical parameters:

• Resistance Value: Must be 4.99 kOhms
• Power Rating: Must be 0.125W (1/8W)
• Composition: Must be Metal Film
• Operating Temperature Range: Must be -65°C to 175°C
• Package Type: Must be Axial
• Physical Dimensions: Must be 0.094" Dia x 0.250" L (2.39mm x 6.35mm)
• Series Compliance: Must be MIL-PRF-55182/01 RNC55 series

The substitute parts listed below meet all these core electrical and mechanical requirements. Variations in packaging format (Tape & Reel, Cut Tape, Bulk), tolerance grade (±1% or ±0.1%), and failure rate classification do not affect functional interchangeability in circuit applications where the specified parameters are met.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products from Vishay Dale within the MIL-PRF-55182/01 RNC55 military series. Selection between RNC55H4991FPRSL, RNC55H4991FSRE6, and RNC55H4991BSB14 is determined by packaging and tolerance requirements:

RNC55H4991FPRSL (Tape & Reel): Select when automated assembly processes require tape and reel packaging. Failure rate classification P (0.1%) is suitable for standard military applications.

RNC55H4991FSRE6 (Cut Tape): Select when manual or semi-automated assembly is required. Offers improved failure rate classification S (0.001%) compared to the tape and reel variant. REACH Affected status applies.

RNC55H4991BSB14 (Bulk): Select when tighter tolerance specification of ±0.1% is required for precision circuit applications. Bulk packaging is suitable for high-volume manufacturing. Failure rate classification S (0.001%) and REACH Affected status apply.

All parts share identical electrical performance, operating temperature range, and physical dimensions. RoHS non-compliance status is consistent across all variants.

Frequently Asked Questions (FAQ)

Q: Can RNC55H4991FSRE6 be used as a direct replacement for RNC55H4991FPRSL?

A: Yes. Both parts have identical resistance value (4.99 kOhms), tolerance (±1%), power rating (0.125W), composition (Metal Film), operating temperature range (-65°C to 175°C), and physical dimensions (0.094" Dia x 0.250" L). The difference is packaging format: Tape & Reel versus Cut Tape. Circuit performance is identical.

Q: What is the advantage of RNC55H4991BSB14 over the other substitutes?

A: RNC55H4991BSB14 provides tighter tolerance specification at ±0.1% compared to ±1% for the other parts. This is beneficial in precision analog circuits where resistance accuracy directly affects circuit performance. All other electrical and mechanical parameters remain identical.

Q: Are there any compliance differences between these parts?

A: RNC55H4991FPRSL is RoHS non-compliant with no REACH status specified. RNC55H4991FSRE6 and RNC55H4991BSB14 are both RoHS non-compliant and REACH Affected. All parts carry ECCN EAR99 and HTSUS 8533.21.0090 classifications.

Q: Does packaging format affect circuit performance?

A: No. Tape & Reel (TR), Cut Tape (CT), and Bulk packaging formats are logistics and assembly considerations only. They do not affect the electrical or mechanical performance of the resistor component itself.

Q: What is the difference in failure rate between these parts?

A: RNC55H4991FPRSL has failure rate classification P (0.1%), while RNC55H4991FSRE6 and RNC55H4991BSB14 have failure rate classification S (0.001%). Lower failure rate classification indicates higher reliability. Selection depends on mission-critical application requirements.