TWW5JR39 Equivalent & Substitute Parts

Part Overview

The TWW5JR39 is a 390 mOhms ±5% 5W through-hole wirewound resistor manufactured by Ohmite in radial configuration with flame-proof and safety features. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The TWW series radial wirewound resistor is designed for applications requiring precision current sensing, power dissipation, and thermal stability across industrial temperature ranges.

Substiute Parts

TWW5JR39

OhmiteIn Stock: 1117TWW5JR39 Datasheet

Current PartRFQ

TWW5JR39E

OhmiteIn Stock: 2410TWW5JR39E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TWW5JR39 are determined by strict equivalence across the following electrical and mechanical parameters:

• Resistance value: 390 mOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Radial
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C to 275°C
• Physical dimensions: 0.492" L x 0.354" W (12.50mm x 9.00mm)
• Height - Seated (Max): 1.024" (26.00mm)
• Number of terminations: 2
• Features: Flame Proof, Safety

The TWW5JR39E is a direct substitute manufactured by Ohmite with identical electrical specifications and mechanical form factor. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The TWW5JR39E is the direct equivalent substitute for the obsolete TWW5JR39. Both components share identical electrical performance and mechanical specifications. The TWW5JR39E is the preferred selection for new designs and production applications due to its active product status and ROHS3 compliance certification. The TWW5JR39E maintains full functional and form-factor compatibility with existing circuit designs specified for the TWW5JR39.

Frequently Asked Questions (FAQ)

Q: Can TWW5JR39E be used as a direct replacement for TWW5JR39?

A: Yes. The TWW5JR39E is electrically and mechanically identical to the TWW5JR39. Both components have the same resistance value (390 mOhms), tolerance (±5%), power rating (5W), temperature coefficient (±400ppm/°C), operating temperature range (-55°C to 275°C), and radial package dimensions (0.492" L x 0.354" W, 1.024" height maximum).

Q: What is the primary difference between TWW5JR39 and TWW5JR39E?

A: The TWW5JR39 is classified as obsolete, while the TWW5JR39E is an active product. The TWW5JR39E also carries ROHS3 compliance certification, whereas the TWW5JR39 is RoHS non-compliant.

Q: Are there any packaging differences between these parts?

A: The TWW5JR39 is supplied in standard packaging, while the TWW5JR39E is supplied in bulk packaging. Both maintain identical component specifications and radial form factor.

Q: Can these resistors be used in high-temperature applications?

A: Yes. Both components are rated for operating temperatures from -55°C to 275°C with a temperature coefficient of ±400ppm/°C, making them suitable for industrial and high-temperature environments.

Q: Are these components suitable for PCB mounting?

A: These are through-hole radial components designed for insertion into PCB holes. They are not surface-mount devices.