TWM3J56R Equivalent & Substitute Parts

Part Overview

The TWM3J56R is a 56 Ohm, 3W through-hole resistor manufactured by Ohmite, featuring metal oxide film composition with flame-proof and safety characteristics. This component is classified as obsolete, making identification of compatible substitutes essential for ongoing system maintenance and new design implementations. The radial package configuration and specific electrical ratings define the scope for equivalent part selection.

Substiute Parts

TWM3J56R

OhmiteIn Stock: 997TWM3J56R Datasheet

Current PartRFQ

TWM3J56RE

OhmiteIn Stock: 794TWM3J56RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWM3J56R is determined by strict equivalence across the following critical parameters:

• Resistance value: 56 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package configuration: Radial
• Temperature coefficient: ±350ppm/°C
• Operating temperature range: -55°C to 275°C
• Physical dimensions and termination count

The TWM3J56RE qualifies as a direct substitute, maintaining identical electrical specifications and mechanical form factor while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J56RE is the direct equivalent for the obsolete TWM3J56R. Both components share identical electrical and mechanical specifications, ensuring functional interchangeability in circuit applications. The primary distinction lies in product status and regulatory compliance: the TWM3J56RE maintains active production status and achieves ROHS3 compliance, whereas the TWM3J56R is obsolete and RoHS non-compliant. For new designs and ongoing procurement, the TWM3J56RE is the appropriate selection. Both components maintain equivalent REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can TWM3J56RE replace TWM3J56R in existing applications? A: Yes. The TWM3J56RE is electrically and mechanically identical to the TWM3J56R, with matching resistance, tolerance, power rating, temperature coefficient, operating range, and radial package dimensions. Direct substitution is valid.

Q: What is the primary reason to transition from TWM3J56R to TWM3J56RE? A: The TWM3J56R is classified as obsolete, limiting future availability. The TWM3J56RE is an active product with current manufacturing support and improved regulatory compliance (ROHS3).

Q: Are there dimensional differences between these parts? A: No. Both components share identical physical dimensions: 0.492" L x 0.354" W (12.50mm x 9.00mm) with a maximum seated height of 1.024" (26.00mm). PCB layout and mechanical clearance requirements remain unchanged.

Q: Do these resistors have different temperature performance characteristics? A: No. Both maintain identical temperature coefficient (±350ppm/°C) and operating temperature range (-55°C to 275°C), ensuring equivalent thermal performance in circuit applications.

Q: What packaging options are available for TWM3J56RE? A: The TWM3J56RE is supplied in bulk packaging, whereas the TWM3J56R packaging specification was not detailed. Confirm packaging requirements with your procurement source.