Equivalent & Substitute Parts for Ohmite 20J680

Part Overview

The Ohmite 20J680 is a 680 Ohm, 5% tolerance, 10W through-hole wirewound resistor with axial leads and flame retardant coating. This component is classified as Active product status and is suitable for applications requiring high power dissipation in compact form factors. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility with the original specification.

Substiute Parts

20J680

OhmiteIn Stock: 117420J680 Datasheet

Current PartRFQ

20J680E

OhmiteIn Stock: 126020J680E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Ohmite 20J680 is determined by strict equivalence across the following electrical and mechanical parameters:

• Resistance Value: 680 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power Rating: 10W (exact match required)
• Composition: Wirewound (exact match required)
• Package Configuration: Axial leads (exact match required)
• Physical Dimensions: 0.394" Dia x 1.858" L (exact match required)
• Temperature Coefficient: ±30ppm/°C (exact match required)
• Safety Features: Flame Retardant Coating (exact match required)

The substitute part 20J680E meets all electrical and mechanical requirements for direct substitution. Differences in packaging format (Bulk vs. standard) and RoHS compliance status do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the 20J680 and 20J680E are Active product status components from Ohmite's Series 20 wirewound resistor line. The primary distinction between these parts is RoHS compliance status: the 20J680 is RoHS non-compliant, while the 20J680E is ROHS3 compliant. For applications subject to RoHS regulatory requirements, the 20J680E is the appropriate selection. For applications without RoHS constraints, either part provides equivalent electrical and mechanical performance. Both parts carry REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the 20J680E be used as a direct replacement for the 20J680?

A: Yes. The 20J680E is electrically and mechanically equivalent to the 20J680. All critical parameters—resistance value, tolerance, power rating, composition, package type, and physical dimensions—are identical.

Q: What is the difference between the 20J680 and 20J680E?

A: The primary differences are RoHS compliance status (20J680 is non-compliant; 20J680E is ROHS3 compliant) and packaging format (20J680 uses standard packaging; 20J680E uses bulk packaging). Electrical and mechanical specifications are identical.

Q: Does the packaging format difference affect circuit performance?

A: No. Packaging format refers to the quantity and presentation method for procurement. The individual component specifications and performance characteristics remain unchanged.

Q: Are both parts suitable for high-temperature applications?

A: Both parts operate with a temperature coefficient of ±30ppm/°C. Operating temperature limits are not specified in the provided data. Consult the manufacturer's datasheet for specific thermal operating range information.

Q: Which part should I select for new designs?

A: For new designs subject to RoHS regulations, select the 20J680E. For applications without RoHS requirements, either part is acceptable based on availability and procurement preferences.

Q: Are these parts interchangeable on existing PCBs?

A: Yes. Both parts use identical axial lead configuration and physical dimensions (0.394" Dia x 1.858" L), ensuring mechanical compatibility with existing through-hole PCB layouts.