CF1/4CT52R203J Equivalent & Substitute Parts

Part Overview

The CF1/4CT52R203J is a 20 kOhms ±5% 0.25W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. in the CF series. This carbon film resistor features flame-proof and safety characteristics, with an operating temperature range of -55°C to 155°C. The part is currently active in production status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

CF1/4CT52R203J

KOA Speer Electronics, Inc.In Stock: 5807CF1/4CT52R203J Datasheet

Current PartRFQ

CF1/4C203J

KOA Speer Electronics, Inc.In Stock: 2054CF1/4C203J Datasheet

Parametric EquivalentRFQ

CFR-25JB-52-20K

YAGEOIn Stock: 5600CFR-25JB-52-20K Datasheet

SimilarRFQ

CFR-25JR-52-20K

YAGEOIn Stock: 2012CFR-25JR-52-20K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF1/4CT52R203J is determined by strict equivalence in the following parameters: resistance value (20 kOhms), tolerance (±5%), power rating (0.25W), composition (carbon film), package type (axial), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3). Packaging format (Cut Tape vs. Bulk) does not affect electrical or mechanical compatibility and is considered a supply-chain variable only.

The identified substitutes maintain all critical electrical parameters and mechanical form factors. Dimensional variations within the axial package specification and minor differences in temperature coefficient do not affect functional equivalence for standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All four parts—CF1/4CT52R203J, CF1/4C203J, CFR-25JB-52-20K, and CFR-25JR-52-20K—are active production components with ROHS3 compliance and REACH unaffected status. Selection between KOA Speer Electronics and YAGEO variants is based on supply availability and packaging requirements rather than electrical performance.

The CF1/4C203J offers direct equivalence to the primary part with identical specifications and differs only in packaging format (Bulk vs. Cut Tape). The YAGEO CFR series parts (CFR-25JB-52-20K and CFR-25JR-52-20K) provide functional equivalence with minor dimensional tolerance variations within the axial package specification and a slightly different temperature coefficient range (-500/+350 ppm/°C vs. -450/+350 ppm/°C). These variations do not affect circuit performance for standard applications.

Frequently Asked Questions (FAQ)

Q: Can CF1/4C203J be used as a direct replacement for CF1/4CT52R203J?

A: Yes. Both parts are manufactured by KOA Speer Electronics with identical electrical specifications (20 kOhms ±5%, 0.25W, carbon film, axial package). The only difference is packaging format: CF1/4CT52R203J is supplied in Cut Tape format, while CF1/4C203J is supplied in Bulk format. Electrical and mechanical compatibility is complete.

Q: Are YAGEO CFR-25JR-52-20K and CFR-25JB-52-20K suitable replacements?

A: Yes. Both YAGEO parts maintain the critical electrical parameters: 20 kOhms resistance, ±5% tolerance, 0.25W power rating, carbon film composition, and axial package type. Operating temperature range and RoHS compliance are identical. Dimensional variations (0.094" Dia × 0.248" L vs. 0.091" Dia × 0.240" L) remain within standard axial package tolerances and do not affect PCB mounting or circuit function.

Q: What is the difference between CFR-25JR-52-20K and CFR-25JB-52-20K?

A: Both parts are electrically identical with the same resistance, tolerance, power rating, and composition. The difference is packaging format: CFR-25JR-52-20K is supplied in Cut Tape (CT) format, while CFR-25JB-52-20K is supplied in Bulk format.

Q: Does the temperature coefficient difference affect substitution?

A: No. The KOA parts specify -450/+350 ppm/°C while YAGEO parts specify -500/+350 ppm/°C. Both ranges are within acceptable limits for standard circuit applications and do not prevent functional equivalence.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—CF1/4CT52R203J, CF1/4C203J, CFR-25JB-52-20K, and CFR-25JR-52-20K—are ROHS3 compliant and REACH unaffected.