RC12KB150R Equivalent & Substitute Parts

Part Overview

The RC12KB150R is a 150 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 currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

RC12KB150R

Stackpole Electronics IncIn Stock: 985RC12KB150R Datasheet

Current PartRFQ

ASRM12JA150R

Stackpole Electronics IncIn Stock: 805ASRM12JA150R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12KB150R is determined by the following critical parameters:

• Resistance Value: Must be 150 Ohms
• Power Rating: Must be 0.5W (1/2W) minimum
• Package Type: Must be Axial to ensure mechanical and electrical compatibility with existing PCB layouts
• Operating Temperature Range: Must encompass or exceed -55°C to 125°C
• Compliance: Must maintain ROHS3 compliance and REACH unaffected status

The ASRM12JA150R meets all substitution criteria. While it features improved tolerance (±5% versus ±10%) and metal film composition (versus carbon composition), these represent performance enhancements rather than incompatibilities. The substitute maintains identical resistance value, power rating, axial package configuration, and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JA150R is the manufacturer-recommended substitute for the obsolete RC12KB150R. Both components are manufactured by Stackpole Electronics Inc and maintain full ROHS3 compliance and REACH unaffected status.

The substitute offers the following advantages: improved tolerance specification (±5% versus ±10%), extended operating temperature range (-55°C to 155°C versus -55°C to 125°C), and active product status ensuring continued availability. The metal film composition with flame retardant coating provides enhanced safety characteristics compared to the carbon composition construction of the original part.

Physical dimensions are slightly reduced in the substitute (0.118" Dia x 0.354" L versus 0.142" Dia x 0.374" L), which may require PCB layout verification for applications with tight component spacing constraints.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JA150R be used as a direct replacement for the RC12KB150R?

A: Yes. Both components share identical resistance value (150 Ohms), power rating (0.5W), and axial package configuration. The substitute meets or exceeds all electrical and thermal specifications of the original part.

Q: What is the difference between carbon composition and metal film resistors?

A: Carbon composition resistors (RC12KB150R) use a carbon-based resistive element, while metal film resistors (ASRM12JA150R) use a thin metal film. Metal film construction provides tighter tolerance (±5% versus ±10%), lower noise, and better temperature stability. Both types are suitable for general-purpose applications.

Q: Are there any physical compatibility concerns?

A: The ASRM12JA150R has slightly smaller dimensions (0.118" Dia x 0.354" L) compared to the RC12KB150R (0.142" Dia x 0.374" L). In most applications, this size reduction presents no compatibility issues. However, applications with precise component spacing or mechanical constraints should verify PCB layout compatibility.

Q: Does the substitute maintain regulatory compliance?

A: Yes. The ASRM12JA150R is ROHS3 compliant and REACH unaffected, matching the compliance status of the original RC12KB150R.

Q: Why is the RC12KB150R listed as obsolete?

A: The RC12KB150R has been discontinued by the manufacturer. The ASRM12JA150R represents the current active alternative from Stackpole Electronics Inc for this resistance and power rating combination.