RC12KB510R Equivalent & Substitute Parts

Part Overview

The RC12KB510R is a 510 Ohms ±10% 0.5W 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 necessary for ongoing design support and procurement continuity.

Substiute Parts

RC12KB510R

Stackpole Electronics IncIn Stock: 1121RC12KB510R Datasheet

Current PartRFQ

ASRM12JA510R

Stackpole Electronics IncIn Stock: 1102ASRM12JA510R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12KB510R is determined by the following critical parameters:

• Resistance value: 510 Ohms (exact match required)
• Power rating: 0.5W minimum (equal or higher acceptable)
• Package type: Axial through-hole configuration
• Operating temperature range: Must encompass or exceed -55°C to 125°C
• RoHS compliance: ROHS3 Compliant status maintained

The ASRM12JA510R qualifies as a direct substitute based on matching resistance, power rating, axial package configuration, and RoHS3 compliance. The substitute maintains compatibility with the original circuit requirements while offering improved tolerance specification and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JA510R is suitable for applications currently using the RC12KB510R. The substitute maintains identical resistance and power rating specifications while providing tighter tolerance (±5% versus ±10%) and extended operating temperature capability to 155°C. Both components are ROHS3 compliant and manufactured by the same supplier, ensuring regulatory consistency. The transition from carbon composition to metal film construction offers improved stability characteristics. The active product status of the ASRM12JA510R ensures long-term availability and supply chain continuity compared to the obsolete RC12KB510R.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JA510R directly replace the RC12KB510R in existing designs?

A: Yes. Both components share identical resistance value (510 Ohms), power rating (0.5W), and axial package configuration. The substitute operates within the original temperature range and maintains RoHS3 compliance.

Q: What are the differences between these two resistors?

A: The primary differences are composition (carbon composition versus metal film), tolerance specification (±10% versus ±5%), and maximum operating temperature (125°C versus 155°C). The ASRM12JA510R offers improved tolerance accuracy and extended temperature capability.

Q: Are there any physical dimension differences?

A: The ASRM12JA510R has slightly smaller dimensions (0.118" Dia x 0.354" L) compared to the RC12KB510R (0.142" Dia x 0.374" L). Both maintain axial through-hole configuration and standard lead spacing suitable for PCB mounting.

Q: Does the composition change affect circuit performance?

A: Metal film resistors typically exhibit better frequency response and lower noise characteristics compared to carbon composition resistors. The tighter tolerance of the ASRM12JA510R (±5%) provides improved precision for applications requiring closer resistance values.

Q: Are both parts available for procurement?

A: The RC12KB510R is classified as obsolete with limited inventory. The ASRM12JA510R is active and maintains current production status, ensuring reliable long-term availability.