CF14JA2R40 Equivalent & Substitute Parts

Part Overview

The CF14JA2R40 is a 2.4 Ohm, ±5% tolerance, 1/4W (0.25W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon film resistor features flame retardant coating and safety characteristics, designed for general-purpose electronic applications requiring reliable resistance values in compact form factors. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement while accommodating different packaging formats or series variants.

Substiute Parts

CF14JA2R40

Stackpole Electronics IncIn Stock: 791CF14JA2R40 Datasheet

Current PartRFQ

CFM14JT2R40

Stackpole Electronics IncIn Stock: 10799CFM14JT2R40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF14JA2R40 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2.4 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Composition: Carbon Film (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Temperature coefficient: ±400ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Regulatory compliance: RoHS3 Compliant, REACH Unaffected (exact match required)

The CFM14JT2R40 qualifies as a direct substitute based on identical electrical performance and regulatory status. Differences in physical dimensions and packaging format (Cut Tape versus Tape & Box) do not affect functional equivalence or circuit performance.

Parameter Comparison

Engineering Selection Recommendations

The CFM14JT2R40 is a qualified substitute for the CF14JA2R40 based on identical electrical specifications, composition, and regulatory compliance status. Both parts are manufactured by Stackpole Electronics Inc and maintain Active product status with full RoHS3 compliance and REACH unaffected designation.

Selection between these parts should be based on packaging and supply requirements. The CF14JA2R40 is supplied in Tape & Box format, while the CFM14JT2R40 is supplied in Cut Tape format. Physical dimension differences reflect manufacturing process variations within the same product family and do not impact circuit performance or electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT2R40 be used as a direct replacement for CF14JA2R40 in production assemblies?

A: Yes. Both parts are electrically identical with matching resistance values, tolerance, power ratings, temperature coefficients, and operating ranges. Substitution is valid from an electrical and regulatory standpoint.

Q: What is the significance of the different physical dimensions between these parts?

A: The dimensional differences (0.091" Dia x 0.236" L versus 0.067" Dia x 0.130" L) reflect variations in the manufacturing process and series designation (CF versus CFM). These dimensional variations do not affect electrical performance or circuit compatibility in standard through-hole applications.

Q: Are there packaging considerations when switching between CF14JA2R40 and CFM14JT2R40?

A: Yes. The CF14JA2R40 is supplied in Tape & Box (TB) packaging, while CFM14JT2R40 is supplied in Cut Tape (CT) packaging. Selection should align with your assembly process requirements and inventory management procedures.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both CF14JA2R40 and CFM14JT2R40 are RoHS3 Compliant and REACH Unaffected, meeting identical regulatory requirements for restricted substance compliance.

Q: What is the temperature coefficient specification, and does it differ between these parts?

A: Both parts share an identical temperature coefficient of ±400ppm/°C and operate across the same temperature range of -55°C to 155°C, ensuring consistent performance across thermal variations.