RN55C3321FRE6 Equivalent & Substitute Parts

Part Overview

The RN55C3321FRE6 is a 3.32 kOhms ±1% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. Manufactured by Vishay Dale, this component is part of the military-grade RN55 series compliant with MIL-R-10509/7 specifications. The part features flame retardant coating, moisture resistance, and safety-rated construction suitable for military and high-reliability applications. As an active product with 1685 units in stock, substitute parts may be required for design optimization, tolerance upgrades, or specific packaging requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55C3321FRE6

Vishay DaleIn Stock: 1698RN55C3321FRE6 Datasheet

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RN55E3321BB14

Vishay DaleIn Stock: 1327RN55E3321BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of RN55C3321FRE6 is permissible with RN55E3321BB14 based on the following criteria:

Matching Parameters (Required for Substitution):

• Resistance value: 3.32 kOhms (identical)
• Power rating: 0.125W, 1/8W (identical)
• Composition: Metal Film (identical)
• Package type: Axial (identical)
• Physical dimensions: 0.090" Dia x 0.240" L (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 (identical)

Upgraded Parameters (Substitute Advantage):

• Tolerance: ±0.1% (tighter than ±1% original)
• Temperature coefficient: ±25ppm/°C (lower than ±50ppm/°C original)
• Packaging format: Bulk (differs from Cut Tape original)

The RN55E3321BB14 maintains full electrical and mechanical compatibility while providing improved tolerance and temperature stability characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both RN55C3321FRE6 and RN55E3321BB14 are active products manufactured by Vishay Dale within the military-grade RN55 series. Selection between these parts should be based on application-specific requirements:

Select RN55C3321FRE6 when:

• Standard ±1% tolerance meets circuit requirements
• Cut Tape packaging format is preferred for automated assembly
• Higher inventory availability is a priority

Select RN55E3321BB14 when:

• Tighter ±0.1% tolerance is required for precision circuits
• Lower temperature coefficient (±25ppm/°C) is necessary for temperature-stable applications
• Bulk packaging format is compatible with assembly processes

Both parts maintain identical electrical performance in power rating, operating temperature range, and military compliance specifications. Physical dimensions are identical, ensuring direct mechanical compatibility in PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can RN55E3321BB14 directly replace RN55C3321FRE6 in existing designs?

A: Yes. Both parts share identical resistance value (3.32 kOhms), power rating (0.125W), physical dimensions (0.090" Dia x 0.240" L), and operating temperature range (-65°C to 175°C). The substitute offers improved tolerance (±0.1% vs ±1%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C), making it functionally compatible and performance-enhanced.

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

A: Cut Tape (CT) packaging supplies components on continuous tape cut into specific lengths, optimized for automated pick-and-place assembly. Bulk packaging supplies loose components, typically used for manual assembly or alternative handling processes. Electrical and mechanical specifications remain identical between packaging formats.

Q: Are both parts compliant with military specifications?

A: Yes. Both RN55C3321FRE6 and RN55E3321BB14 are classified as military-grade components within the RN55 series and comply with MIL-R-10509/7 specifications. Both feature flame retardant coating, moisture resistance, and safety-rated construction.

Q: Which part should be selected for high-precision applications?

A: RN55E3321BB14 is the appropriate selection for high-precision applications due to its tighter tolerance specification (±0.1% compared to ±1%) and lower temperature coefficient (±25ppm/°C compared to ±50ppm/°C), providing superior stability across temperature variations.

Q: Are there any RoHS or REACH compliance differences?

A: No. Both parts share identical RoHS and REACH compliance status: RoHS non-compliant and REACH Affected. Compliance classifications are equivalent between the main part and substitute.