TWW3JR10 Equivalent & Substitute Parts

Part Overview

The TWW3JR10 is a 100 mOhms ±5% 3W through-hole wirewound resistor with radial leads, manufactured by Ohmite. This component features flame-proof and safety-rated construction, designed for applications requiring low-resistance, high-power dissipation in compact form factors. The TWW3JR10 is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

TWW3JR10

OhmiteIn Stock: 1032TWW3JR10 Datasheet

Current PartRFQ

TWW3JR10E

OhmiteIn Stock: 2445TWW3JR10E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWW3JR10 is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 mOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Radial leads
• Operating temperature range: -55°C to 275°C
• Temperature coefficient: ±400 ppm/°C
• Physical dimensions: 12.50mm × 9.00mm × 26.00mm (seated height)
• Safety and flame-proof features

The TWW3JR10E qualifies as a direct substitute, maintaining identical electrical specifications and mechanical form factor while offering improved product status and compliance posture.

Parameter Comparison

Engineering Selection Recommendations

The TWW3JR10E is the appropriate selection for applications currently using or requiring the TWW3JR10. Both components are electrically and mechanically identical across all specified parameters. The TWW3JR10E offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the TWW3JR10E meets ROHS3 compliance requirements, whereas the original TWW3JR10 does not, making it suitable for applications subject to RoHS regulations. Both components maintain identical thermal performance, safety ratings, and dimensional compatibility for direct board-level substitution.

Frequently Asked Questions (FAQ)

Q: Can TWW3JR10E be used as a direct replacement for TWW3JR10?

A: Yes. The TWW3JR10E is electrically and mechanically equivalent to the TWW3JR10 across all specified parameters, including resistance, tolerance, power rating, temperature range, and physical dimensions. Direct substitution is supported without circuit modification.

Q: What is the primary difference between TWW3JR10 and TWW3JR10E?

A: The TWW3JR10E is the active production variant with ROHS3 compliance, while the TWW3JR10 is obsolete and non-compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The TWW3JR10 is supplied in standard packaging, while the TWW3JR10E is supplied in bulk packaging. Both maintain identical radial lead configuration and physical dimensions suitable for through-hole PCB assembly.

Q: Does the TWW3JR10E maintain the same thermal performance?

A: Yes. Both components share identical temperature coefficient (±400 ppm/°C), operating temperature range (-55°C to 275°C), and power dissipation characteristics (3W).

Q: Is the TWW3JR10E suitable for safety-critical applications?

A: Yes. The TWW3JR10E retains the flame-proof and safety-rated features of the original TWW3JR10, maintaining all safety certifications across the specified operating temperature range.