TWM3J680 Equivalent & Substitute Parts

Part Overview

The TWM3J680 is a 680 Ohms ±5% 3W through-hole resistor with radial leads, manufactured by Ohmite using metal oxide film composition. This component features flame-proof and safety characteristics suitable for industrial and high-reliability applications. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system maintenance and new design implementations.

Substiute Parts

TWM3J680

OhmiteIn Stock: 651TWM3J680 Datasheet

Current PartRFQ

TWM3J680E

OhmiteIn Stock: 824TWM3J680E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWM3J680 is determined by strict equivalence across the following critical parameters:

• Resistance value: 680 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package configuration: Radial with 2 terminations
• Temperature coefficient: ±350ppm/°C
• Operating temperature range: -55°C to 275°C
• Physical dimensions: 12.50mm L x 9.00mm W, 26.00mm height (seated)

The TWM3J680E qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction between the main part and its substitute relates to product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J680E is the direct equivalent substitute for the obsolete TWM3J680. Both components are manufactured by Ohmite within the TWM series and maintain identical electrical and mechanical specifications across all critical parameters.

The TWM3J680E offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the TWM3J680E achieves ROHS3 compliance, whereas the original TWM3J680 is RoHS non-compliant. For applications subject to regulatory requirements or environmental compliance mandates, the TWM3J680E provides the necessary certification alignment.

Selection between these parts should be based on supply availability and regulatory requirements applicable to the end application. From an electrical and mechanical standpoint, direct substitution is valid without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the TWM3J680E be used as a direct replacement for the TWM3J680?

A: Yes. The TWM3J680E is electrically and mechanically equivalent to the TWM3J680. All critical parameters including resistance, tolerance, power rating, composition, package type, and operating temperature range are identical. Direct substitution is valid without circuit modification.

Q: What is the primary difference between the TWM3J680 and TWM3J680E?

A: The TWM3J680 is classified as obsolete, while the TWM3J680E maintains active product status. Additionally, the TWM3J680E is ROHS3 compliant, whereas the TWM3J680 is RoHS non-compliant. Electrically and mechanically, both parts are equivalent.

Q: Are there any physical dimension differences between these parts?

A: No. Both the TWM3J680 and TWM3J680E share identical physical dimensions: 12.50mm length, 9.00mm width, and 26.00mm maximum seated height. Radial package configuration and PCB footprint requirements are identical.

Q: Does the TWM3J680E require different handling or storage procedures?

A: No. Both components are metal oxide film resistors with identical composition and environmental specifications. Storage and handling procedures remain unchanged.

Q: What is the temperature coefficient difference between these parts?

A: Both parts have an identical temperature coefficient of ±350ppm/°C and operate across the same temperature range of -55°C to 275°C. No thermal performance variation exists between the two components.

Q: Is the TWM3J680E suitable for applications requiring RoHS compliance?

A: Yes. The TWM3J680E is ROHS3 compliant and is appropriate for applications subject to RoHS regulatory requirements. The original TWM3J680 is RoHS non-compliant and may not be suitable for such applications.