CF12JA3R00 Equivalent & Substitute Parts

Part Overview

The CF12JA3R00 is a 3 Ohm, ±5% tolerance, 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon film resistor features flame retardant coating and safety characteristics, designed for general-purpose applications requiring reliable performance across industrial temperature ranges. The part is currently active in production with 1148 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained while offering alternative packaging or availability options.

Substiute Parts

CF12JA3R00

Stackpole Electronics IncIn Stock: 1219CF12JA3R00 Datasheet

Current PartRFQ

CFM12JT3R00

Stackpole Electronics IncIn Stock: 6049CFM12JT3R00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF12JA3R00 is determined by the following criteria:

• Resistance value: 3 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Carbon Film (exact match required)
• Temperature coefficient: ±400ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The CFM12JT3R00 qualifies as a substitute part because it maintains all critical electrical and thermal specifications while differing only in packaging format (Cut Tape versus Tape & Box) and physical dimensions within the axial package category.

Parameter Comparison

Engineering Selection Recommendations

Both CF12JA3R00 and CFM12JT3R00 are active production parts manufactured by Stackpole Electronics Inc with identical electrical specifications and compliance certifications. Selection between these parts is based on packaging and supply considerations:

• CF12JA3R00 is supplied in Tape & Box format, suitable for applications requiring bulk quantities with protective packaging.
• CFM12JT3R00 is supplied in Cut Tape format with higher inventory availability (5988 units versus 1148 units), appropriate for automated assembly processes and applications with immediate delivery requirements.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can CFM12JT3R00 replace CF12JA3R00 in existing designs?

A: Yes. Both parts are electrically and thermally identical with matching resistance, tolerance, power rating, temperature coefficient, and operating range. The difference is packaging format and physical dimensions within the axial package category. Circuit performance is unaffected by this substitution.

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

A: Tape & Box (TB) provides resistors on tape with protective box packaging for storage and handling. Cut Tape (CT) provides resistors on tape without box packaging. Both formats are compatible with standard component handling and assembly equipment. Cut Tape is typically preferred for high-volume automated assembly.

Q: Are there dimensional compatibility concerns when substituting these parts?

A: The CFM12JT3R00 has smaller physical dimensions (0.091" Dia x 0.256" L) compared to CF12JA3R00 (0.106" Dia x 0.335" L). Both are axial through-hole components. Verify that PCB layout and mechanical clearances accommodate the smaller CFM12JT3R00 dimensions if space constraints exist.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CF12JA3R00 and CFM12JT3R00 are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for industrial and commercial applications.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain and assembly requirements. CFM12JT3R00 offers higher inventory availability and is optimized for automated assembly. CF12JA3R00 is suitable when bulk packaging with protective storage is preferred.