CF14JT3R90 Equivalent & Substitute Parts

Part Overview

The CF14JT3R90 is a 3.9 Ohms ±5% 0.25W (1/4W) 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 precise resistance values in compact form factors. The part is Active status with 886 units currently in stock. Substitute parts are necessary to address packaging format preferences, power rating requirements, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

CF14JT3R90

Stackpole Electronics IncIn Stock: 957CF14JT3R90 Datasheet

Current PartRFQ

CFM12JT3R90

Stackpole Electronics IncIn Stock: 7601CFM12JT3R90 Datasheet

UpgradeRFQ

CFM14JT3R90

Stackpole Electronics IncIn Stock: 14476CFM14JT3R90 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF14JT3R90 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 3.9 Ohms
• Tolerance: ±5%
• Composition: Carbon Film
• Package type: Axial
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C to 155°C
• RoHS compliance: ROHS3 Compliant

Variable Parameters Allowing Substitution:

• Power rating (0.25W, 0.5W, or higher)
• Physical dimensions (length and diameter may vary with power rating)
• Packaging format (Tape & Reel vs. Cut Tape)
• Series designation (CF vs. CFM)

The substitute parts CFM12JT3R90 and CFM14JT3R90 maintain all mandatory electrical parameters while offering alternative packaging and power configurations.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. Selection between CF14JT3R90, CFM12JT3R90, and CFM14JT3R90 depends on application-specific requirements:

CF14JT3R90 is appropriate for applications requiring Tape & Reel packaging format with standard 0.25W power dissipation capacity.

CFM12JT3R90 provides increased power handling at 0.5W (1/2W) in Cut Tape packaging, suitable for applications with higher thermal demands or where enhanced margin above nominal power requirements is necessary.

CFM14JT3R90 offers identical electrical specifications to the main part (0.25W, 3.9 Ohms ±5%) in Cut Tape packaging format with significantly higher inventory availability (14398 units), making it suitable for high-volume procurement or applications where Cut Tape format is preferred.

All parts share identical resistance, tolerance, temperature coefficient, and operating temperature range, ensuring functional equivalence in circuits designed for the CF14JT3R90 specification.

Frequently Asked Questions (FAQ)

Q: Can CFM12JT3R90 replace CF14JT3R90 in all applications?

A: CFM12JT3R90 is electrically equivalent with identical resistance (3.9 Ohms ±5%), tolerance, and temperature characteristics. The primary difference is increased power rating (0.5W vs. 0.25W). This higher power rating does not create incompatibility; it provides additional thermal margin. Physical dimensions differ due to the higher power rating, which may affect PCB layout considerations.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is used for automated assembly processes with continuous reel feeding. Cut Tape (CT) packaging provides individual tape segments suitable for manual assembly or lower-volume applications. Electrical and mechanical specifications remain identical; packaging format selection depends on assembly methodology.

Q: Are CFM14JT3R90 and CF14JT3R90 functionally identical?

A: Yes. Both parts specify 3.9 Ohms ±5%, 0.25W power rating, and identical temperature characteristics. The primary differences are series designation (CFM vs. CF) and packaging format (Cut Tape vs. Tape & Reel). Physical dimensions also differ slightly (0.067" Dia x 0.130" L for CFM14JT3R90 vs. 0.091" Dia x 0.236" L for CF14JT3R90).

Q: Which substitute part should be selected for maximum inventory availability?

A: CFM14JT3R90 provides the highest inventory level at 14398 units, compared to 886 units for CF14JT3R90 and 7580 units for CFM12JT3R90. This makes CFM14JT3R90 optimal for applications requiring immediate availability or high-volume procurement.

Q: Do all substitute parts meet the same compliance standards?

A: All three parts are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Compliance certifications are identical across all substitute options.