TWM3J330 Equivalent & Substitute Parts

Part Overview

The TWM3J330 is a 330 Ohm, 5%, 3W through-hole resistor with radial leads manufactured by Ohmite. This component features metal oxide film construction with flame-proof and safety characteristics, designed for applications requiring robust thermal performance across a wide operating temperature range of -55°C to 275°C. The TWM3J330 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

TWM3J330

OhmiteIn Stock: 974TWM3J330 Datasheet

Current PartRFQ

TWM3J330E

OhmiteIn Stock: 1009TWM3J330E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWM3J330 is determined by strict equivalence across the following critical parameters:

• Resistance value: 330 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package configuration: Radial with 2 terminations
• Operating temperature range: -55°C to 275°C minimum
• Temperature coefficient: ±350ppm/°C
• Physical dimensions: 0.492" L x 0.354" W with maximum seated height of 1.024"

Only parts meeting all these specifications are classified as direct equivalents. Packaging format (bulk vs. other configurations) does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J330E is the direct equivalent for the obsolete TWM3J330. Both parts are manufactured by Ohmite within the TWM series and maintain identical electrical and mechanical specifications. The primary distinction is product status and regulatory compliance: the TWM3J330E is active in production and ROHS3 compliant, whereas the TWM3J330 is obsolete and RoHS non-compliant. For new designs or ongoing procurement, the TWM3J330E is the appropriate selection. Both parts share identical REACH and ECCN classifications, ensuring consistent regulatory treatment in supply chain applications.

Frequently Asked Questions (FAQ)

Q: Can TWM3J330E be used as a direct replacement for TWM3J330 in existing designs?

A: Yes. The TWM3J330E is electrically and mechanically identical to the TWM3J330. All critical parameters—resistance, tolerance, power rating, temperature range, and physical dimensions—are equivalent. The component can be substituted without circuit redesign or board layout modification.

Q: What is the difference between TWM3J330 and TWM3J330E?

A: The TWM3J330E is the active production equivalent. The TWM3J330 is classified as obsolete. Additionally, the TWM3J330E is ROHS3 compliant while the TWM3J330 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any packaging differences between these parts?

A: The TWM3J330 and TWM3J330E use identical radial package configurations with the same physical dimensions and termination count. Packaging format (bulk vs. other configurations) does not affect compatibility.

Q: What operating temperature range do these resistors support?

A: Both the TWM3J330 and TWM3J330E operate across -55°C to 275°C, with a temperature coefficient of ±350ppm/°C. This range supports high-temperature applications requiring robust thermal stability.

Q: Are these parts suitable for RoHS-compliant applications?

A: The TWM3J330E is ROHS3 compliant and suitable for RoHS-regulated applications. The TWM3J330 is RoHS non-compliant and should not be used in new designs subject to RoHS requirements.