RC12KT1M00 Equivalent & Substitute Parts

Part Overview

The RC12KT1M00 is a 1 MOhm ±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 equivalent substitutes necessary for ongoing applications and new designs requiring this resistance value and power rating.

Substiute Parts

RC12KT1M00

Stackpole Electronics IncIn Stock: 928RC12KT1M00 Datasheet

Current PartRFQ

ASRM12JB1M00

Stackpole Electronics IncIn Stock: 836ASRM12JB1M00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RC12KT1M00 is based on the following critical parameters:

• Resistance Value: 1 MOhm (exact match required)
• Power Rating: 0.5W minimum (1/2W)
• Package Type: Axial through-hole configuration
• Termination Count: 2 terminations
• Operating Temperature Range: Must support -55°C to 125°C minimum
• Compliance: ROHS3 and REACH compliance maintained

The ASRM12JB1M00 qualifies as a direct substitute because it maintains the same resistance value, 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 enhancements that do not compromise compatibility in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB1M00 is the manufacturer-recommended substitute for the obsolete RC12KT1M00. Both parts are manufactured by Stackpole Electronics Inc and maintain ROHS3 compliance. The substitute part offers active product status, ensuring continued availability and supply chain reliability.

The ASRM12JB1M00 provides superior tolerance performance (±5% vs ±10%) and an extended operating temperature range (-55°C to 155°C vs -55°C to 125°C), making it suitable for applications with tighter accuracy requirements or elevated temperature environments. The metal film construction replaces the carbon composition design, offering improved stability and lower temperature coefficient performance.

For applications where the original carbon composition characteristics are specifically required, component-level testing and validation should be conducted prior to implementation. In standard applications where tolerance and temperature performance are acceptable, direct substitution is supported.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB1M00 be used as a direct replacement for the RC12KT1M00?

A: Yes. Both parts share identical resistance value (1 MOhm), power rating (0.5W), and axial package configuration. The substitute meets or exceeds all critical electrical and mechanical parameters required for compatibility.

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

A: The primary differences are composition (carbon composition vs metal film), tolerance (±10% vs ±5%), and operating temperature range (-55°C to 125°C vs -55°C to 155°C). The substitute offers improved tolerance accuracy and extended temperature capability.

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

A: Metal film resistors typically exhibit lower noise, better frequency response, and improved temperature stability compared to carbon composition resistors. For most applications, these characteristics represent improvements. Applications with specific carbon composition requirements should be evaluated individually.

Q: Are both parts compliant with current regulations?

A: Yes. Both the RC12KT1M00 and ASRM12JB1M00 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the physical size difference between these parts?

A: The RC12KT1M00 measures 0.142" diameter × 0.374" length (3.60mm × 9.50mm). The ASRM12JB1M00 measures 0.118" diameter × 0.354" length (3.00mm × 9.00mm). Both are axial through-hole components with standard lead spacing suitable for PCB mounting.