RC12KB200K Equivalent & Substitute Parts

Part Overview

The RC12KB200K is a 200 kOhms ±10% 0.5W through-hole axial 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 equivalent substitutes necessary for ongoing applications and new designs requiring this resistance value and power rating.

Substiute Parts

RC12KB200K

Stackpole Electronics IncIn Stock: 677RC12KB200K Datasheet

Current PartRFQ

ASRM12JT200K

Stackpole Electronics IncIn Stock: 1135ASRM12JT200K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RC12KB200K is determined by the following critical parameters:

• Resistance Value: 200 kOhms (exact match required)
• Power Rating: 0.5W minimum (1/2W)
• Package Configuration: Axial through-hole
• Operating Temperature Range: Minimum -55°C to 125°C coverage
• Compliance Requirements: ROHS3 and REACH compliance maintained

The ASRM12JT200K qualifies as a direct substitute based on matching resistance, power rating, and axial package configuration. While the substitute features improved tolerance (±5% vs ±10%) and metal film composition instead of carbon composition, these represent performance enhancements rather than incompatibilities. The substitute maintains the required operating temperature range and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JT200K is the qualified substitute for the obsolete RC12KB200K. Selection is based on:

• Product Status: The RC12KB200K is obsolete; the ASRM12JT200K is active and available in production quantities (1033 pcs in stock vs 654 pcs for the main part).
• Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.
• Electrical Equivalence: Identical resistance value (200 kOhms) and power rating (0.5W) with enhanced tolerance specification (±5% vs ±10%).
• Thermal Performance: The substitute extends the upper operating temperature limit to 155°C, providing additional thermal margin beyond the original -55°C to 125°C range.
• Package Compatibility: Both parts use axial through-hole configuration, ensuring mechanical and electrical compatibility in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JT200K directly replace the RC12KB200K in existing designs?

A: Yes. Both resistors share identical resistance values (200 kOhms), power ratings (0.5W), and axial package configurations. The substitute's improved tolerance (±5%) and extended temperature range provide enhanced performance without requiring circuit modifications.

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

A: The main difference is composition: RC12KB200K uses carbon composition technology, while ASRM12JT200K uses metal film technology. Metal film resistors typically offer better tolerance accuracy, lower noise, and improved temperature stability. Both maintain the same electrical specifications required for the application.

Q: Are there packaging differences between the main part and substitute?

A: Yes. The RC12KB200K is supplied in bulk packaging, while the ASRM12JT200K is available in Tape & Reel (TR) format. Both are axial through-hole components suitable for the same PCB assembly processes.

Q: Does the substitute meet the same compliance requirements?

A: Yes. Both the RC12KB200K and ASRM12JT200K are ROHS3 compliant and REACH unaffected, maintaining identical regulatory status.

Q: Why is the RC12KB200K marked as obsolete?

A: The RC12KB200K is an older carbon composition resistor design. Stackpole Electronics Inc has transitioned to the ASRM series metal film resistors, which offer superior performance characteristics while maintaining backward compatibility with legacy applications.