CF1/2CT52R243J Equivalent & Substitute Parts

Part Overview

The CF1/2CT52R243J is a 24 kOhms ±5% 0.5W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This carbon film resistor features flame-proof and safety characteristics, designed for applications requiring reliable fixed resistance in the 24 kOhm range with standard tolerance specifications. The part maintains active product status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the critical performance parameters.

Substiute Parts

CF1/2CT52R243J

KOA Speer Electronics, Inc.In Stock: 4938CF1/2CT52R243J Datasheet

Current PartRFQ

CFR-50JB-52-24K

YAGEOIn Stock: 11002CFR-50JB-52-24K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CF1/2CT52R243J is permissible with the CFR-50JB-52-24K based on the following critical parameters:

• Resistance Value: Both parts specify 24 kOhms, ensuring identical electrical function
• Tolerance: Both maintain ±5% tolerance, providing equivalent precision
• Power Rating: Both are rated at 0.5W (1/2W), supporting identical power dissipation requirements
• Composition: Both utilize carbon film construction, ensuring comparable frequency response and noise characteristics
• Package Configuration: Both employ axial through-hole packaging, permitting direct mechanical substitution on printed circuit boards
• Operating Temperature Range: Both support -55°C ~ 155°C operation, maintaining thermal compatibility
• Regulatory Compliance: Both achieve ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements

Physical dimensions vary slightly between manufacturers (KOA: 3.00mm × 8.50mm; YAGEO: 3.30mm × 9.00mm), which remains within acceptable tolerances for standard through-hole PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the CF1/2CT52R243J and CFR-50JB-52-24K maintain active product status with full regulatory compliance. Selection between these parts should be based on:

• Supply Chain Availability: The CFR-50JB-52-24K (YAGEO) currently maintains higher inventory levels (10,902 pcs vs. 4,882 pcs), supporting extended lead time requirements
• Regulatory Requirements: Both parts satisfy ROHS3 and REACH compliance, permitting use in regulated applications without additional qualification
• Physical Constraints: The slight dimensional difference (0.30mm diameter and 0.50mm length increase in YAGEO part) requires verification against PCB layout constraints in space-restricted applications
• Temperature Coefficient Tolerance: The YAGEO part exhibits marginally higher negative temperature coefficient (-500 ppm/°C vs. -450 ppm/°C), which may impact precision applications requiring tight temperature stability

Frequently Asked Questions (FAQ)

Q: Can the CFR-50JB-52-24K directly replace the CF1/2CT52R243J in existing designs?

A: Yes, direct substitution is permissible provided PCB layout accommodates the slightly larger physical dimensions (3.30mm × 9.00mm vs. 3.00mm × 8.50mm). Both parts maintain identical electrical specifications and regulatory compliance.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching resistance value (24 kOhms), tolerance (±5%), power rating (0.5W), composition (carbon film), package type (axial), and operating temperature range (-55°C ~ 155°C). All parameters must align for direct substitution.

Q: Are there differences in temperature coefficient between these parts?

A: Yes. The CF1/2CT52R243J specifies -450/+350 ppm/°C, while the CFR-50JB-52-24K specifies -500/+350 ppm/°C. This difference is minor and typically acceptable for general-purpose applications but should be evaluated for precision circuits requiring tight temperature stability.

Q: Do both parts meet environmental compliance requirements?

A: Yes. Both the CF1/2CT52R243J and CFR-50JB-52-24K are ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory standards for electronic component manufacturing and use.

Q: What packaging format differences exist between these parts?

A: The CF1/2CT52R243J is supplied in Cut Tape (CT) packaging, while the CFR-50JB-52-24K is supplied in Bulk packaging. This affects handling and automated assembly processes but does not impact electrical or mechanical compatibility.