RC14JB220R Equivalent & Substitute Parts

Part Overview

The RC14JB220R is a 220 Ohm ±5% 1/4W 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

RC14JB220R

Stackpole Electronics IncIn Stock: 1206RC14JB220R Datasheet

Current PartRFQ

ASRM12JB220R

Stackpole Electronics IncIn Stock: 1034ASRM12JB220R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RC14JB220R is determined by the following critical parameters:

• Resistance Value: 220 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Package Type: Axial through-hole configuration (exact match required)
• Power Rating: Minimum 0.25W (equal or higher acceptable)
• Operating Temperature Range: Minimum -55°C to 125°C coverage (equal or wider acceptable)
• Compliance: ROHS3 compliance maintained

The ASRM12JB220R qualifies as a substitute based on matching resistance, tolerance, and axial package type. The higher power rating (0.5W vs 0.25W) and extended temperature range (-55°C to 155°C) provide enhanced performance margins. The metal film composition and flame retardant coating represent a composition upgrade from carbon composition.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB220R is the qualified substitute for the obsolete RC14JB220R. Both components maintain ROHS3 compliance and are manufactured by the same supplier. The substitute provides equivalent electrical performance with identical resistance and tolerance specifications. The increased power rating (0.5W vs 0.25W) and extended operating temperature range (-55°C to 155°C vs -55°C to 125°C) offer improved thermal margins for circuit applications. The metal film composition with flame retardant coating represents an upgrade in reliability and safety characteristics compared to the original carbon composition design. Direct pin-compatible substitution is supported by identical axial package geometry and two-termination configuration.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB220R directly replace the RC14JB220R in existing designs?

A: Yes. Both components share identical resistance (220 Ohms), tolerance (±5%), and axial package configuration. The higher power rating and extended temperature range of the substitute provide equivalent or improved performance in the same circuit footprint.

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

A: Carbon composition resistors (RC14JB220R) use a carbon-based resistive element, while metal film resistors (ASRM12JB220R) use a thin metal film. Metal film resistors typically offer better stability, lower noise, and improved temperature characteristics. Both compositions are suitable for general-purpose applications.

Q: Does the higher power rating of the ASRM12JB220R affect circuit compatibility?

A: No. A higher power rating indicates the component can safely dissipate more heat. In applications where the original 1/4W rating was adequate, the 1/2W substitute will operate within safe thermal limits with no adverse effects.

Q: Are both parts RoHS compliant?

A: Yes. Both the RC14JB220R and ASRM12JB220R are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What is the temperature coefficient difference between these parts?

A: The RC14JB220R does not specify a temperature coefficient value. The ASRM12JB220R specifies 0 / -1800ppm/°C, indicating minimal resistance change across the operating temperature range, which is typical for metal film resistors.