TWM3J430 Equivalent & Substitute Parts

Part Overview

The TWM3J430 is a 430 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

TWM3J430

OhmiteIn Stock: 1151TWM3J430 Datasheet

Current PartRFQ

TWM3J430E

OhmiteIn Stock: 721TWM3J430E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWM3J430 is determined by strict equivalence across the following critical parameters:

• Resistance value: 430 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: 0.492" L x 0.354" W with maximum seated height of 1.024"

The TWM3J430E 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 is product status and RoHS compliance level.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J430E is the qualified substitute for the obsolete TWM3J430. Both components are manufactured by Ohmite within the TWM series and maintain identical electrical and mechanical specifications across all critical parameters.

The TWM3J430E offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the TWM3J430E achieves ROHS3 compliance, meeting modern regulatory requirements for new designs and systems subject to RoHS directives. The TWM3J430 remains RoHS non-compliant, which may restrict its use in applications with regulatory compliance mandates.

For applications requiring the specific electrical characteristics of a 430 Ohm 3W metal oxide film resistor with radial configuration, the TWM3J430E provides direct functional and mechanical compatibility with the obsolete part number.

Frequently Asked Questions (FAQ)

Q: Can the TWM3J430E be used as a direct replacement for the TWM3J430?

A: Yes. The TWM3J430E is electrically and mechanically equivalent to the TWM3J430. All critical parameters—resistance value, tolerance, power rating, composition, package type, temperature coefficient, operating temperature range, and physical dimensions—are identical between the two part numbers.

Q: What is the primary difference between TWM3J430 and TWM3J430E?

A: The TWM3J430 is classified as obsolete, while the TWM3J430E maintains active product status. Additionally, the TWM3J430E is ROHS3 compliant, whereas the TWM3J430 is RoHS non-compliant. These differences do not affect electrical or mechanical performance.

Q: Are there any packaging differences between these parts?

A: The TWM3J430 is supplied in standard packaging, while the TWM3J430E is supplied in bulk packaging. Both maintain identical radial lead configuration and physical dimensions suitable for through-hole PCB assembly.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance relates to material composition and regulatory adherence, not electrical performance. Both parts deliver identical functional characteristics in circuit applications.

Q: Can the TWM3J430E be used in legacy systems designed for the TWM3J430?

A: Yes. The TWM3J430E is fully compatible with legacy systems. Identical electrical specifications, temperature ratings, and physical dimensions ensure drop-in compatibility without circuit redesign or board modification.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is determined by matching resistance (430 Ohms), tolerance (±5%), power rating (3W), composition (metal oxide film), package type (radial), temperature coefficient (±350ppm/°C), operating temperature range (-55°C to 275°C), and physical dimensions (0.492" L x 0.354" W, 1.024" max height).