TWM3J270 Equivalent & Substitute Parts

Part Overview

The TWM3J270 is a 270 Ohm, 3W through-hole resistor manufactured by Ohmite with metal oxide film composition, designed for radial mounting applications. This component features flame-proof and safety characteristics suitable for industrial and high-reliability applications. The part is currently listed as obsolete, making identification of compatible substitutes essential for ongoing system maintenance and new design implementations.

Substiute Parts

TWM3J270

OhmiteIn Stock: 1231TWM3J270 Datasheet

Current PartRFQ

TWM3J270E

OhmiteIn Stock: 1133TWM3J270E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TWM3J270 is determined by strict equivalence across the following critical parameters:

• Resistance value: 270 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package configuration: Radial through-hole
• Operating temperature range: -55°C to 275°C
• Temperature coefficient: ±350ppm/°C
• Physical dimensions: 12.50mm x 9.00mm x 26.00mm (seated height)
• Features: Flame Proof, Safety characteristics

The TWM3J270E qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J270E is the direct equivalent for the obsolete TWM3J270. Both components share identical electrical specifications, mechanical dimensions, and functional characteristics. The primary distinction is product status: the TWM3J270E maintains active production status with current availability, whereas the TWM3J270 is obsolete.

For new designs and ongoing system support, the TWM3J270E is the appropriate selection. The substitute offers improved regulatory compliance through ROHS3 certification, addressing modern environmental and safety standards while maintaining full electrical and mechanical compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can TWM3J270E be used as a direct replacement for TWM3J270?

A: Yes. The TWM3J270E is electrically and mechanically identical to the TWM3J270 across all specified parameters including resistance, tolerance, power rating, temperature range, and physical dimensions.

Q: What is the primary reason to substitute TWM3J270 with TWM3J270E?

A: The TWM3J270 is obsolete. The TWM3J270E is the active production equivalent from the same manufacturer and series, ensuring continued component availability.

Q: Are there packaging differences between these parts?

A: The TWM3J270 is supplied in standard packaging, while the TWM3J270E is supplied in bulk packaging. Both maintain identical radial through-hole configuration and physical dimensions.

Q: Does the TWM3J270E meet current regulatory requirements?

A: The TWM3J270E is ROHS3 compliant, meeting current environmental and safety standards. The original TWM3J270 is RoHS non-compliant.

Q: Are the operating temperature ranges identical?

A: Yes. Both components operate across -55°C to 275°C with identical temperature coefficient specifications of ±350ppm/°C.

Q: What are the physical mounting considerations?

A: Both components use radial through-hole configuration with identical dimensions of 12.50mm length, 9.00mm width, and 26.00mm seated height, ensuring direct PCB compatibility.