RC1KB12K0 Equivalent & Substitute Parts

Part Overview

The RC1KB12K0 is a 12 kOhms ±10% 1W through hole resistor in axial package 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

RC1KB12K0

Stackpole Electronics IncIn Stock: 893RC1KB12K0 Datasheet

Current PartRFQ

ASRM1JA12K0

Stackpole Electronics IncIn Stock: 975ASRM1JA12K0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1KB12K0 is based on the following critical parameters that must remain constant or improve:

• Resistance value: 12 kOhms (exact match required)
• Power rating: 1W (minimum requirement)
• Package type: Axial (mechanical and electrical compatibility)
• Operating temperature range: Must encompass or exceed -55°C ~ 125°C
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The ASRM1JA12K0 qualifies as a direct substitute. While it employs metal film composition instead of carbon composition, it maintains the identical resistance value, power rating, and axial package configuration. The substitute offers improved tolerance (±5% versus ±10%), an extended operating temperature range (-55°C ~ 155°C), and active product status with current availability.

Parameter Comparison

Engineering Selection Recommendations

The ASRM1JA12K0 is the appropriate substitute for the obsolete RC1KB12K0. Both components are manufactured by Stackpole Electronics Inc and maintain ROHS3 compliance. The substitute provides superior tolerance specification (±5%), extended temperature operating range, and active product status ensuring long-term availability. The metal film construction of the substitute offers improved stability characteristics compared to the carbon composition of the original part. Both components are certified for the same regulatory frameworks (REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can the ASRM1JA12K0 directly replace the RC1KB12K0 in existing designs?

A: Yes. Both components share identical resistance values (12 kOhms), power ratings (1W), and axial package configurations. The substitute maintains compatibility with existing PCB layouts and circuit requirements.

Q: What is the significance of the tolerance difference between ±10% and ±5%?

A: The substitute offers tighter tolerance, meaning the actual resistance value will be closer to the nominal 12 kOhms specification. This represents an improvement in precision for circuit applications requiring more accurate resistance values.

Q: Does the composition change from carbon to metal film affect circuit performance?

A: The composition change does not affect basic electrical function. Both compositions deliver 1W power dissipation and 12 kOhms resistance. The metal film construction provides improved temperature stability through its specified temperature coefficient.

Q: Are both components suitable for the same temperature operating range?

A: The substitute ASRM1JA12K0 supports an extended range (-55°C ~ 155°C) compared to the original RC1KB12K0 (-55°C ~ 125°C). This provides additional operational margin for applications requiring higher temperature performance.

Q: What is the packaging difference between the two components?

A: Both components use axial package configuration. The ASRM1JA12K0 has slightly smaller physical dimensions (0.157" Dia x 0.433" L versus 0.224" Dia x 0.563" L), which may provide minor PCB layout advantages without affecting electrical compatibility.