RC14KB100K Equivalent & Substitute Parts

Part Overview

The RC14KB100K is a 100 kOhms ±10% 0.25W 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 classified as obsolete, making identification of suitable substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

RC14KB100K

Stackpole Electronics IncIn Stock: 949RC14KB100K Datasheet

Current PartRFQ

ASRM12JB100K

Stackpole Electronics IncIn Stock: 957ASRM12JB100K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASRM12JB100K qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Matching Parameters:

• Identical resistance value: 100 kOhms
• Identical package type: Axial through-hole
• Identical number of terminations: 2
• Identical operating temperature range minimum: -55°C
• Identical ECCN classification: EAR99
• Compliance with RoHS3 requirements

Allowable Parameter Variations:

• Tolerance upgrade from ±10% to ±5% (tighter tolerance acceptable)
• Power rating increase from 0.25W to 0.5W (higher rating acceptable)
• Composition change from carbon composition to metal film (improved stability)
• Operating temperature range extension to 155°C (extended upper limit acceptable)
• Temperature coefficient specification: 0 / -1800ppm/°C (metal film characteristic)

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB100K is the manufacturer-recommended substitute for the obsolete RC14KB100K. Selection of this substitute is supported by:

• Product Status: The substitute is active and in production, ensuring long-term availability and supply chain continuity.
• Compliance: Both parts maintain ROHS3 compliance and EAR99 classification, preserving regulatory alignment.
• Electrical Compatibility: Identical resistance value and package type ensure direct functional replacement in axial through-hole applications.
• Performance Enhancement: The metal film composition and tighter tolerance provide improved stability and accuracy compared to the carbon composition original.
• Thermal Capability: Extended operating temperature range to 155°C provides additional margin for thermal stress conditions.
• Mechanical Fit: Identical axial package and termination configuration allow direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB100K be used as a direct replacement for the RC14KB100K?

A: Yes. Both components share identical resistance value, tolerance compatibility, axial package type, and operating temperature minimum. The substitute offers improved specifications including tighter tolerance, higher power rating, and extended temperature range.

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

A: Carbon composition resistors use a carbon-based resistive element, while metal film resistors use a thin metal alloy film. Metal film resistors provide superior stability, lower noise, and tighter tolerance control. The ASRM12JB100K metal film construction is suitable for applications requiring higher precision.

Q: Are there any physical dimension differences between these parts?

A: Yes. The RC14KB100K measures 0.094" diameter × 0.248" length (2.40mm × 6.30mm), while the ASRM12JB100K measures 0.118" diameter × 0.354" length (3.00mm × 9.00mm). The substitute is slightly larger due to its higher power rating. Verify board layout clearance before substitution.

Q: Does the higher power rating of the substitute affect circuit operation?

A: No. A higher power rating does not affect circuit operation. The 0.5W rating of the substitute provides additional thermal margin and is fully compatible with applications designed for the 0.25W original component.

Q: Are both parts RoHS compliant?

A: Yes. Both the RC14KB100K and ASRM12JB100K are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.