RNC55H4992FSR3665 Equivalent & Substitute Parts

Part Overview

The RNC55H4992FSR3665 is a 49.9 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. This component is manufactured by Vishay Dale under the military-grade RNC55 series, compliant with MIL-PRF-55182/01 specification. The resistor features moisture-resistant construction with weldable terminations, designed for military and high-reliability applications. With active product status and 960 units in stock, this part remains available for new designs and production requirements. Substitute parts are identified to address packaging format availability and inventory optimization while maintaining identical electrical and mechanical specifications.

Substiute Parts

RNC55H4992FSR3665

Vishay DaleIn Stock: 999RNC55H4992FSR3665 Datasheet

Current PartRFQ

RNC55H4992FSRE6

Vishay DaleIn Stock: 2051RNC55H4992FSRE6 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RNC55H4992FSR3665 is determined by strict equivalence across all critical electrical and mechanical parameters. The primary differentiator between the main part and its substitute is packaging format: the main part is supplied in Tape & Reel (TR) configuration, while the substitute is available in Cut Tape (CT) format. Both parts maintain identical resistance value (49.9 kOhms), tolerance (±1%), power rating (0.125W), temperature coefficient (±50ppm/°C), operating temperature range (-65°C to 175°C), physical dimensions (0.094" Dia × 0.250" L), composition (metal film), military classification (MIL-PRF-55182/01, RNC55 series), and failure rate (S, 0.001%). The substitute part RNC55H4992FSRE6 is functionally and electrically interchangeable for applications where packaging format does not impose design or assembly constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the RNC55H4992FSR3665 and RNC55H4992FSRE6 are active products manufactured by Vishay Dale with identical electrical specifications and military-grade certifications. Selection between these parts is determined solely by packaging format requirements and assembly process compatibility. The main part (RNC55H4992FSR3665) in Tape & Reel format is suitable for automated pick-and-place assembly operations. The substitute part (RNC55H4992FSRE6) in Cut Tape format accommodates manual assembly, lower-volume production runs, or applications where reel-based packaging is not required. Both parts maintain RoHS non-compliant status and EAR99 export classification. No electrical or mechanical redesign is necessary when transitioning between these two part numbers, provided assembly equipment and processes are compatible with the respective packaging formats.

Frequently Asked Questions (FAQ)

Q: Can RNC55H4992FSRE6 be used as a direct replacement for RNC55H4992FSR3665?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: Tape & Reel versus Cut Tape. Direct substitution is valid for any application where the packaging format does not impose assembly constraints.

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

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for automated assembly equipment. Cut Tape (CT) packaging supplies the same components on tape segments, suitable for manual assembly or lower-volume production. Both formats contain identical components with identical specifications.

Q: Are there any electrical performance differences between these two part numbers?

A: No. Both parts have identical resistance (49.9 kOhms), tolerance (±1%), power rating (0.125W), temperature coefficient (±50ppm/°C), and operating temperature range (-65°C to 175°C). Electrical performance is equivalent.

Q: Do both parts meet the same military specifications?

A: Yes. Both parts are classified as Military, MIL-PRF-55182/01, RNC55 series with identical failure rate (S, 0.001%), moisture resistance, and weldable construction.

Q: Which part should I select for a new design?

A: Selection depends on your assembly process. For automated assembly with pick-and-place equipment, use RNC55H4992FSR3665 (Tape & Reel). For manual assembly or lower-volume production, use RNC55H4992FSRE6 (Cut Tape). Both are active products with adequate inventory.

Q: Are there any compliance or certification differences?

A: No. Both parts share identical RoHS status (non-compliant), ECCN classification (EAR99), and HTSUS code (8533.21.0090).