CFM12JA680R Equivalent & Substitute Parts

Part Overview

The CFM12JA680R is a 680 Ohm, ±5% tolerance, 0.5W (1/2W) 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 passive resistance in compact form factors. The part is currently Active in product status with 755 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.

Substiute Parts

CFM12JA680R

Stackpole Electronics IncIn Stock: 805CFM12JA680R Datasheet

Current PartRFQ

CF12JT680R

Stackpole Electronics IncIn Stock: 15718CF12JT680R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CFM12JA680R is determined by strict equivalence across the following critical parameters:

• Resistance Value: Must be 680 Ohms
• Tolerance: Must be ±5%
• Power Rating: Must be 0.5W (1/2W)
• Composition: Must be Carbon Film
• Package Type: Must be Axial
• Temperature Coefficient: Must be 0 / -400ppm/°C
• Operating Temperature Range: Must be -55°C ~ 155°C
• Compliance: Must maintain ROHS3 Compliant status

The CF12JT680R meets all electrical and mechanical substitution criteria. Packaging format differences (Tape & Box versus Cut Tape) do not affect functional equivalence and represent supply chain variations only.

Parameter Comparison

Engineering Selection Recommendations

Both CFM12JA680R and CF12JT680R are Active status components manufactured by Stackpole Electronics Inc with identical electrical specifications and compliance certifications. Selection between these parts is based on supply chain requirements and packaging format availability. The CF12JT680R offers significantly higher inventory availability (15624 units versus 755 units). Both parts maintain ROHS3 Compliant and REACH Unaffected status, ensuring regulatory compliance for applications requiring these certifications. Physical dimensions vary slightly between the two axial packages (CFM12JA: 0.091" Dia x 0.256" L versus CF12JT: 0.106" Dia x 0.335" L), which may impact PCB layout considerations in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can CF12JT680R be used as a direct replacement for CFM12JA680R?

A: Yes. Both parts are electrically and mechanically equivalent 680 Ohm, ±5%, 0.5W carbon film axial resistors with identical temperature coefficients, operating ranges, and compliance certifications. Substitution is valid for all applications where the CFM12JA680R is specified.

Q: What is the difference between Tape & Box (TB) and Cut Tape (CT) packaging?

A: Packaging format refers to supply chain delivery method only. Tape & Box includes protective boxing for bulk quantities, while Cut Tape provides individual tape segments. Both formats contain identical components with no functional differences.

Q: Are there physical dimension differences between these parts?

A: Yes. The CFM12JA680R measures 0.091" Dia x 0.256" L (2.30mm x 6.50mm), while the CF12JT680R measures 0.106" Dia x 0.335" L (2.70mm x 8.50mm). Both are axial package types. Verify PCB layout clearances if space constraints exist.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CFM12JA680R and CF12JT680R are ROHS3 Compliant and REACH Unaffected, meeting identical regulatory requirements.

Q: Which part should be selected based on availability?

A: CF12JT680R has substantially higher inventory (15624 units) compared to CFM12JA680R (755 units). If supply continuity is a priority, CF12JT680R is the preferred selection.