HR01124J Equivalent & Substitute Parts

Part Overview

The HR01124J is a 120 kOhms ±5% 1/16W axial through-hole resistor manufactured by KYOCERA AVX using thick film composition. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 125°C and is not RoHS compliant.

Substiute Parts

HR01124J

KYOCERA AVXIn Stock: 1068HR01124J Datasheet

Current PartRFQ

CFR-12JB-52-120K

YAGEOIn Stock: 7235CFR-12JB-52-120K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CFR-12JB-52-120K from YAGEO qualifies as a functional substitute based on the following critical parameters:

• Identical resistance value: 120 kOhms
• Identical tolerance: ±5%
• Identical package configuration: Axial through-hole
• Identical number of terminations: 2
• Compatible operating temperature range: -55°C ~ 155°C (exceeds HR01124J minimum requirement)
• Higher power rating: 0.167W (1/6W) provides margin above the 0.063W requirement

The CFR-12JB-52-120K uses carbon film composition rather than thick film; however, both compositions meet the electrical specifications for this resistance and tolerance class. The substitute part is currently in active production status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The CFR-12JB-52-120K is the designated substitute for the obsolete HR01124J. Selection is based on:

• Electrical equivalence: Identical resistance, tolerance, and termination configuration
• Physical compatibility: Axial package format maintains board layout compatibility
• Operational margin: Higher power rating (0.167W vs 0.063W) and extended temperature range (-55°C ~ 155°C vs -55°C ~ 125°C) provide design margin
• Compliance improvement: Active product status with ROHS3 compliance addresses obsolescence and regulatory requirements
• Availability: 7176 units in stock versus 968 units for the obsolete part

Frequently Asked Questions (FAQ)

Q: Can the CFR-12JB-52-120K directly replace the HR01124J in existing designs?

A: Yes. Both parts share identical resistance (120 kOhms), tolerance (±5%), and axial package configuration. The substitute has higher power rating and extended temperature range, providing operational margin.

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

A: Both compositions achieve the specified 120 kOhms ±5% electrical performance. Carbon film composition is standard in active production resistors and meets the electrical requirements for this application.

Q: Does the higher power rating of the CFR-12JB-52-120K affect circuit performance?

A: No. Power rating indicates the maximum power the component can dissipate. A higher rating does not change electrical behavior in circuits operating below the original 0.063W specification.

Q: Are there physical dimension differences between these parts?

A: Yes. The CFR-12JB-52-120K is larger (0.075" Dia x 0.134" L) compared to the HR01124J (0.036" Square x 0.075" L). Board layout must accommodate the larger axial package dimensions.

Q: What is the significance of the temperature coefficient difference?

A: The HR01124J has ±250ppm/°C while the CFR-12JB-52-120K has 0/-700ppm/°C. Both values are within acceptable ranges for general-purpose resistor applications. The substitute's wider range reflects carbon film technology characteristics.

Q: Why is RoHS compliance important for this substitution?

A: The HR01124J is RoHS non-compliant and obsolete. The CFR-12JB-52-120K is ROHS3 compliant, meeting current regulatory requirements for new designs and production.