CFM12JA680K Equivalent & Substitute Parts

Part Overview

The CFM12JA680K is a 680 kOhms ±5% 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 resistance values across industrial and commercial temperature ranges. The part is currently active in production with full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

CFM12JA680K

Stackpole Electronics IncIn Stock: 979CFM12JA680K Datasheet

Current PartRFQ

CF12JT680K

Stackpole Electronics IncIn Stock: 50397CF12JT680K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CFM12JA680K is determined by the following critical parameters:

• Resistance Value: Must be 680 kOhms
• Tolerance: Must be ±5%
• Power Rating: Must be 0.5W (1/2W)
• Composition: Must be Carbon Film
• Package Type: Must be Axial
• Operating Temperature Range: Must support -55°C to 155°C
• Temperature Coefficient: Must be 0 / -850 ppm/°C
• Compliance: Must maintain RoHS3 compliance

The CF12JT680K meets all these criteria and is classified as a manufacturer-recommended substitute. Differences in packaging format (Tape & Box versus Cut Tape) and physical dimensions do not affect electrical performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the CFM12JA680K and CF12JT680K are active production parts from Stackpole Electronics Inc with identical electrical and thermal specifications. Selection between these parts is based on packaging and supply chain requirements rather than performance characteristics. The CFM12JA680K is supplied in Tape & Box format, while the CF12JT680K is supplied in Cut Tape format. Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compliance for industrial and commercial applications. The choice between these substitutes depends on assembly process requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can CF12JT680K replace CFM12JA680K in existing designs?

A: Yes. Both parts share identical electrical specifications including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. The axial package type is identical, ensuring mechanical compatibility in through-hole applications.

Q: What is the difference between these two parts?

A: The primary differences are packaging format and physical dimensions. CFM12JA680K uses Tape & Box packaging with dimensions of 0.091" diameter × 0.256" length. CF12JT680K uses Cut Tape packaging with dimensions of 0.106" diameter × 0.335" length. These dimensional differences do not affect electrical performance or circuit functionality.

Q: Are both parts RoHS3 compliant?

A: Yes. Both CFM12JA680K and CF12JT680K are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Which part should I select for new designs?

A: Selection depends on your assembly process and supply chain. Both parts are active production items with equivalent performance. Choose based on packaging compatibility with your manufacturing equipment and inventory requirements.

Q: Do these parts have the same temperature coefficient?

A: Yes. Both parts have a temperature coefficient of 0 / -850 ppm/°C and operate across the identical temperature range of -55°C to 155°C.