RN55C2503CB14 Equivalent & Substitute Parts

Part Overview

The RN55C2503CB14 is a 250 kOhms ±0.25% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. Manufactured by Vishay Dale under the military-grade RN55 series (MIL-R-10509/7), this component features flame retardant coating, moisture resistance, and safety certification suitable for military and high-reliability applications. The part is currently active in production with 841 units in stock. Substitute parts may be required due to inventory constraints, design upgrades for improved tolerance specifications, or application-specific performance requirements.

Substiute Parts

RN55C2503CB14

Vishay DaleIn Stock: 872RN55C2503CB14 Datasheet

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RN55E2503BB14

Vishay DaleIn Stock: 1410RN55E2503BB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55C2503CB14 is determined by the following critical parameters:

• Resistance Value: Must be 250 kOhms (exact match required)
• Power Rating: Must be 0.125W (1/8W) minimum
• Package Configuration: Must be Axial through-hole
• Composition: Must be Metal Film
• Operating Temperature Range: Must support -65°C to 175°C
• Series Compliance: Must belong to MIL-R-10509/7 military specification
• Physical Dimensions: Must match 0.090" Dia x 0.240" L (2.29mm x 6.10mm)

The RN55E2503BB14 qualifies as a direct substitute because it maintains all critical parameters while offering improved tolerance (±0.1% versus ±0.25%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C). Both parts are identical in resistance value, power rating, package type, composition, operating temperature range, and military series designation.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55C2503CB14 and RN55E2503BB14 are active production components manufactured by Vishay Dale under identical military specifications (MIL-R-10509/7). Selection between these parts should be based on application tolerance requirements:

• RN55C2503CB14: Suitable for applications where ±0.25% tolerance and ±50ppm/°C temperature coefficient meet design specifications.
• RN55E2503BB14: Appropriate for applications requiring tighter tolerance control (±0.1%) and improved temperature stability (±25ppm/°C).

Both parts maintain identical compliance status (RoHS non-compliant, REACH Affected) and are certified for military applications with flame retardant coating and moisture resistance. Physical footprint and thermal operating range are identical, ensuring direct mechanical and thermal compatibility in circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can RN55E2503BB14 be used as a direct replacement for RN55C2503CB14?

A: Yes. Both parts share identical resistance value (250 kOhms), power rating (0.125W), package configuration (Axial), composition (Metal Film), operating temperature range (-65°C to 175°C), and military series designation (MIL-R-10509/7). The RN55E2503BB14 offers improved tolerance (±0.1% versus ±0.25%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C).

Q: Are there any physical differences between these parts?

A: No. Both parts have identical dimensions (0.090" Dia x 0.240" L / 2.29mm x 6.10mm) and axial package configuration, ensuring identical PCB footprint and mounting compatibility.

Q: What determines substitution eligibility for the RN55C2503CB14?

A: Substitute parts must maintain the same resistance value (250 kOhms), power rating (0.125W), axial package type, metal film composition, operating temperature range (-65°C to 175°C), and MIL-R-10509/7 military series compliance. Physical dimensions must also match.

Q: Do both parts have the same compliance certifications?

A: Yes. Both the RN55C2503CB14 and RN55E2503BB14 are RoHS non-compliant and REACH Affected, with identical military-grade certifications and flame retardant coating features.

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

A: The RN55E2503BB14 is the appropriate choice for applications requiring tighter tolerance control and improved temperature stability due to its ±0.1% tolerance and ±25ppm/°C temperature coefficient.