RC14JB510R Equivalent & Substitute Parts

Part Overview

The RC14JB510R is a 510 Ohm ±5% 1/4W axial through-hole resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, with an operating temperature range of -55°C to 125°C. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

RC14JB510R

Stackpole Electronics IncIn Stock: 998RC14JB510R Datasheet

Current PartRFQ

ASRM12JA510R

Stackpole Electronics IncIn Stock: 1102ASRM12JA510R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC14JB510R is determined by the following critical parameters:

• Resistance Value: Must be 510 Ohms
• Tolerance: Must be ±5%
• Package Configuration: Must be axial through-hole
• Power Rating: Minimum 0.25W; higher ratings are acceptable
• Composition Type: Carbon composition preferred; metal film acceptable with thermal coefficient consideration
• Compliance: ROHS3 compliance required
• Operating Temperature Range: Must support -55°C minimum; extended upper range acceptable

The ASRM12JA510R qualifies as a substitute based on matching resistance, tolerance, axial package, and compliance requirements. The higher power rating (0.5W vs 0.25W) and extended operating temperature range (-55°C ~ 155°C) provide enhanced performance margins.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JA510R is a direct functional substitute for the obsolete RC14JB510R. Both components maintain identical resistance and tolerance specifications with axial through-hole packaging. The substitute offers increased power dissipation capacity (0.5W vs 0.25W) and an extended operating temperature range to 155°C, providing design margin improvements. Both components are ROHS3 compliant and manufactured by Stackpole Electronics Inc, ensuring supply chain consistency. The ASRM12JA510R is classified as active product status, ensuring continued availability for production applications.

Physical dimensions differ slightly; the substitute is larger in both diameter and length. PCB layout and mechanical clearance must be verified before implementation.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JA510R directly replace the RC14JB510R in existing designs?

A: Yes, the ASRM12JA510R is functionally equivalent for the specified resistance and tolerance values. Verify PCB layout accommodates the larger axial dimensions (0.118" Dia x 0.354" L vs 0.094" Dia x 0.248" L).

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

A: The main differences are power rating (0.5W vs 0.25W), composition type (metal film vs carbon composition), and operating temperature range (-55°C ~ 155°C vs -55°C ~ 125°C). The substitute provides enhanced thermal performance and higher power dissipation capability.

Q: Are both components RoHS compliant?

A: Yes, both the RC14JB510R and ASRM12JA510R are ROHS3 compliant.

Q: Why is the RC14JB510R classified as obsolete?

A: The RC14JB510R is an older carbon composition design. The ASRM12JA510R represents the current active product line from Stackpole Electronics Inc with improved specifications and extended availability.

Q: Does the metal film composition of the substitute affect circuit performance?

A: Metal film resistors exhibit different temperature coefficient characteristics (0/-1800ppm/°C for ASRM12JA510R vs unspecified for RC14JB510R). For precision applications requiring specific temperature stability, thermal coefficient specifications must be evaluated against circuit requirements.

Q: What packaging formats are available for the ASRM12JA510R?

A: The ASRM12JA510R is supplied in Cut Tape (CT) packaging, suitable for automated assembly processes.