RN55D3920FRE6 Equivalent & Substitute Parts

Part Overview

The RN55D3920FRE6 is a 392 Ohms ±1% metal film axial through-hole resistor rated at 0.125W (1/8W) manufactured by Vishay Dale. This component is part of the military-grade RN55 series, featuring flame retardant coating, moisture resistance, and safety certification per MIL-R-10509/7. The part is currently active in production with 975 units in stock. Substitute parts are identified to address packaging format preferences, tolerance requirements, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55D3920FRE6

Vishay DaleIn Stock: 1044RN55D3920FRE6 Datasheet

Current PartRFQ

RN55C3920BRE6

Vishay DaleIn Stock: 1688RN55C3920BRE6 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The RN55C3920BRE6 qualifies as a direct substitute for the RN55D3920FRE6 based on the following critical parameters:

• Identical resistance value: 392 Ohms
• Identical power rating: 0.125W (1/8W)
• Identical physical dimensions: 0.090" Dia x 0.240" L
• Identical composition: Metal Film
• Identical package style: Axial
• Identical operating temperature range: -65°C to 175°C
• Identical series classification: Military, MIL-R-10509/7, RN55
• Identical features: Flame Retardant Coating, Military, Moisture Resistant, Safety

The primary differences are packaging format (Tape & Reel versus Cut Tape), tolerance specification (±1% versus ±0.1%), and temperature coefficient (±100ppm/°C versus ±50ppm/°C). These differences represent an upgrade path rather than a functional incompatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55D3920FRE6 and RN55C3920BRE6 are active production components from Vishay Dale with identical military-grade specifications and certifications. Selection between these parts depends on application-specific requirements:

The RN55D3920FRE6 (Tape & Reel packaging) is suitable for high-volume automated assembly operations where reel-based component feeding is standard.

The RN55C3920BRE6 (Cut Tape packaging) offers tighter tolerance (±0.1% versus ±1%) and lower temperature coefficient (±50ppm/°C versus ±100ppm/°C), making it preferable for precision applications requiring enhanced stability and accuracy. Cut Tape packaging accommodates lower-volume or mixed-component assembly processes.

Both parts maintain identical compliance status (RoHS non-compliant, REACH Affected) and identical regulatory classifications (ECCN: EAR99, HTSUS: 8533.21.0090).

Frequently Asked Questions (FAQ)

Q: Can RN55C3920BRE6 replace RN55D3920FRE6 in existing designs?

A: Yes. Both parts share identical electrical specifications (392 Ohms, 0.125W), physical dimensions (0.090" Dia x 0.240" L), operating temperature range (-65°C to 175°C), and military-grade features. The RN55C3920BRE6 represents an upgrade due to tighter tolerance and improved temperature coefficient.

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

A: Tape & Reel (TR) packaging supplies components on continuous reels for automated high-speed assembly. Cut Tape (CT) packaging provides components on tape segments, suitable for manual assembly, low-volume production, or mixed-component kitting.

Q: Does the tolerance difference affect circuit performance?

A: The RN55D3920FRE6 maintains ±1% tolerance, while the RN55C3920BRE6 maintains ±0.1% tolerance. Applications requiring tighter resistance accuracy benefit from the RN55C3920BRE6. Standard applications function identically with either tolerance specification.

Q: Are there temperature coefficient implications for circuit design?

A: The RN55D3920FRE6 has a temperature coefficient of ±100ppm/°C, while the RN55C3920BRE6 has ±50ppm/°C. Circuits operating across wide temperature ranges or requiring stable resistance values benefit from the lower temperature coefficient of the RN55C3920BRE6.

Q: Do both parts meet the same military specifications?

A: Yes. Both parts are classified under the MIL-R-10509/7 standard and belong to the military-grade RN55 series. Both feature identical flame retardant coating, moisture resistance, and safety certifications.

Q: What inventory considerations apply to these parts?

A: The RN55D3920FRE6 has 975 units in stock (Tape & Reel format). The RN55C3920BRE6 has 1652 units in stock (Cut Tape format). Inventory availability may influence selection for immediate procurement needs.