TWM5J4K3 Equivalent & Substitute Parts

Part Overview

The TWM5J4K3 is a 4.3 kOhms ±5% 5W 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-temperature applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. The TWM5J4K3E provides a direct functional equivalent with improved compliance status and availability.

Substiute Parts

TWM5J4K3

OhmiteIn Stock: 990TWM5J4K3 Datasheet

Current PartRFQ

TWM5J4K3E

OhmiteIn Stock: 1452TWM5J4K3E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TWM5J4K3 is based on matching the following critical parameters:

• Resistance value: 4.3 kOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Metal Oxide Film
• Package configuration: Radial leads
• Operating temperature range: -55°C ~ 275°C
• Temperature coefficient: ±350ppm/°C
• Features: Flame Proof, Safety

The TWM5J4K3E meets all these requirements while maintaining identical electrical and thermal characteristics. Physical dimensions vary slightly within acceptable assembly tolerances for radial-lead components.

Parameter Comparison

Engineering Selection Recommendations

The TWM5J4K3E is the direct substitute for the obsolete TWM5J4K3. Both components share identical electrical specifications, thermal characteristics, and physical package configuration. The primary distinction is product status: the TWM5J4K3E is active and in production, whereas the TWM5J4K3 is obsolete.

The TWM5J4K3E additionally provides RoHS compliance, which may be required for applications subject to environmental regulations. Both parts are manufactured by Ohmite and maintain the same series designation (TWM), ensuring design compatibility and interchangeability in existing circuits.

Frequently Asked Questions (FAQ)

Q: Can TWM5J4K3E replace TWM5J4K3 in existing designs?

A: Yes. The TWM5J4K3E is electrically and mechanically equivalent to the TWM5J4K3. Both components have identical resistance values, tolerance, power ratings, temperature ranges, and package configurations.

Q: What is the difference between TWM5J4K3 and TWM5J4K3E?

A: The TWM5J4K3E is the active production variant of the obsolete TWM5J4K3. The TWM5J4K3E includes RoHS compliance and improved availability. Physical dimensions are within acceptable assembly tolerances for radial-lead resistors.

Q: Are there any compliance differences?

A: The TWM5J4K3E is RoHS compliant, while the TWM5J4K3 is non-compliant. For applications requiring RoHS certification, the TWM5J4K3E is the appropriate selection.

Q: What are the thermal characteristics?

A: Both parts operate across -55°C to 275°C with a temperature coefficient of ±350ppm/°C, ensuring stable performance across industrial temperature ranges.

Q: Are the physical dimensions identical?

A: Both components use radial package configuration with a maximum seated height of 1.024 inches (26.00mm). Minor length and width variations exist within standard assembly tolerances for through-hole radial-lead resistors.