RC12KT220K Equivalent & Substitute Parts

Part Overview

The RC12KT220K is a 220 kOhms ±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 necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

RC12KT220K

Stackpole Electronics IncIn Stock: 1083RC12KT220K Datasheet

Current PartRFQ

ASRM1JA220K

Stackpole Electronics IncIn Stock: 1048ASRM1JA220K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12KT220K is determined by the following critical parameters:

• Resistance Value: Must be 220 kOhms
• Package Configuration: Must be axial through-hole format
• Power Rating: Must meet or exceed 0.5W minimum requirement
• Operating Temperature Range: Must support -55°C to 125°C minimum
• Compliance: Must maintain ROHS3 compliance status
• Termination Count: Must have 2 terminations for direct pin compatibility

The ASRM1JA220K qualifies as a substitute based on matching resistance value, axial package type, exceeding power rating (1W vs. 0.5W), supporting the required temperature range (-55°C to 155°C), and maintaining ROHS3 compliance. Tolerance improvement (±5% vs. ±10%) and composition change (metal film vs. carbon composition) represent enhanced electrical characteristics suitable for legacy system replacement.

Parameter Comparison

Engineering Selection Recommendations

The ASRM1JA220K is suitable for direct substitution in applications requiring the RC12KT220K. The substitute part maintains identical resistance value and axial package configuration while providing enhanced specifications: doubled power rating (1W vs. 0.5W), improved tolerance (±5% vs. ±10%), and extended operating temperature range (-55°C to 155°C vs. -55°C to 125°C). Both components maintain ROHS3 compliance and are manufactured by the same supplier, ensuring consistency in procurement and application reliability. The active product status of the ASRM1JA220K ensures ongoing availability for legacy system support and new production requirements.

Frequently Asked Questions (FAQ)

Q: Can the ASRM1JA220K directly replace the RC12KT220K in existing circuits?

A: Yes. Both components share identical resistance value (220 kOhms), axial package configuration, and two-terminal design. The substitute meets or exceeds all critical electrical parameters required for the original part.

Q: What are the key differences between these two resistors?

A: The primary differences are composition (carbon composition vs. metal film), power rating (0.5W vs. 1W), tolerance (±10% vs. ±5%), and operating temperature range (-55°C to 125°C vs. -55°C to 155°C). The ASRM1JA220K provides improved electrical performance across all parameters.

Q: Why is the RC12KT220K marked as obsolete?

A: The RC12KT220K is an older carbon composition resistor design. The ASRM1JA220K represents the current active equivalent from the same manufacturer, offering superior specifications and modern manufacturing standards.

Q: Are there any physical dimension differences that affect PCB layout?

A: The ASRM1JA220K has slightly larger dimensions (0.157" Dia x 0.433" L vs. 0.142" Dia x 0.374" L). Both maintain axial package format suitable for through-hole mounting, though physical clearance should be verified in space-constrained applications.

Q: Do both parts maintain the same compliance certifications?

A: Yes. Both the RC12KT220K and ASRM1JA220K are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, ensuring equivalent regulatory compliance for procurement and deployment.