RN55C49R9CB14 Equivalent & Substitute Parts

Part Overview

The RN55C49R9CB14 is a 49.9 Ohm, 1/8W metal film through-hole resistor manufactured by Vishay Dale, designed for military applications per MIL-R-10509/7 specifications. This axial component features flame retardant coating, moisture resistance, and safety-rated construction suitable for high-reliability electronic assemblies. The part maintains active product status with 944 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained while offering improved tolerance specifications or alternative availability.

Substiute Parts

RN55C49R9CB14

Vishay DaleIn Stock: 969RN55C49R9CB14 Datasheet

Current PartRFQ

RN55C49R9BB14

Vishay DaleIn Stock: 872RN55C49R9BB14 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55C49R9CB14 is determined by the following critical parameters:

• Resistance Value: Must be 49.9 Ohms (exact match required)
• Power Rating: Must be 0.125W / 1/8W (exact match required)
• Package Type: Must be Axial (exact match required)
• Physical Dimensions: Must be 0.090" Dia x 0.240" L (exact match required)
• Composition: Must be Metal Film (exact match required)
• Operating Temperature Range: Must support -65°C to 175°C (exact match required)
• Temperature Coefficient: Must be ±50ppm/°C (exact match required)
• Series Compliance: Must conform to Military, MIL-R-10509/7, RN55 standards

The RN55C49R9BB14 qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters while offering improved tolerance specification (±0.1% versus ±0.25%).

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C49R9CB14 and RN55C49R9BB14 maintain active product status and identical compliance certifications (RoHS non-compliant, REACH Affected, ECCN EAR99). The RN55C49R9BB14 provides improved tolerance specification at ±0.1% compared to the main part's ±0.25%, while maintaining all other electrical and mechanical parameters. Selection between these parts depends on circuit tolerance requirements and application-specific precision needs. Both parts are suitable for military-grade applications requiring MIL-R-10509/7 compliance.

Frequently Asked Questions (FAQ)

Q: Can RN55C49R9BB14 be used as a direct replacement for RN55C49R9CB14?

A: Yes. The RN55C49R9BB14 is a direct substitute. It maintains identical resistance value (49.9 Ohms), power rating (1/8W), package type (Axial), physical dimensions, operating temperature range (-65°C to 175°C), and temperature coefficient (±50ppm/°C). The substitute offers improved tolerance specification (±0.1% versus ±0.25%).

Q: What is the primary difference between these two parts?

A: The tolerance specification differs. RN55C49R9CB14 has ±0.25% tolerance, while RN55C49R9BB14 has ±0.1% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for military applications?

A: Yes. Both parts conform to Military series specifications and MIL-R-10509/7 standards with flame retardant coating, moisture resistance, and safety-rated construction.

Q: Do these parts have the same physical footprint?

A: Yes. Both parts share identical axial package dimensions of 0.090" Dia x 0.240" L (2.29mm x 6.10mm), ensuring direct mechanical compatibility in PCB layouts.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS non-compliant and REACH Affected, with ECCN classification EAR99 and HTSUS code 8533.21.0090.