Equivalent & Substitute Parts for TWW3J2R0

Part Overview

The TWW3J2R0 is a 2 Ohm ±5% 3W radial wirewound resistor manufactured by Ohmite, designed for through-hole applications requiring flame-proof and safety-rated construction. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications. The TWW series represents a legacy product line, and active alternatives are available to ensure supply chain continuity.

Substiute Parts

TWW3J2R0

OhmiteIn Stock: 1068TWW3J2R0 Datasheet

Current PartRFQ

TWW3J2R0E

OhmiteIn Stock: 4502TWW3J2R0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TWW3J2R0 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Radial through-hole
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C to 275°C
• Physical dimensions and height specifications
• Safety and flame-proof features
• Number of terminations: 2

The TWW3J2R0E qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters specified above.

Parameter Comparison

Engineering Selection Recommendations

The TWW3J2R0E is the direct equivalent for the obsolete TWW3J2R0. Both components share identical electrical specifications, mechanical dimensions, and safety certifications. The primary distinction is product status: the TWW3J2R0E is actively manufactured and available, whereas the TWW3J2R0 is obsolete.

An additional consideration is regulatory compliance. The TWW3J2R0E achieves ROHS3 compliance, whereas the original TWW3J2R0 is RoHS non-compliant. For applications subject to RoHS requirements, the TWW3J2R0E provides full compliance while maintaining complete functional equivalence.

Both components maintain REACH Unaffected status and EAR99 export classification. The TWW3J2R0E is available in bulk packaging, supporting production requirements across various order volumes.

Frequently Asked Questions (FAQ)

Q: Can the TWW3J2R0E be used as a direct replacement for the TWW3J2R0?

A: Yes. The TWW3J2R0E is electrically and mechanically identical to the TWW3J2R0. All critical parameters—resistance, tolerance, power rating, temperature coefficient, operating range, and physical dimensions—are equivalent. The components are pin-compatible and footprint-compatible for through-hole PCB applications.

Q: What is the primary reason to transition from TWW3J2R0 to TWW3J2R0E?

A: The TWW3J2R0 is obsolete and no longer manufactured. The TWW3J2R0E is the active production equivalent from the same manufacturer, ensuring continued supply chain availability. Additionally, the TWW3J2R0E meets ROHS3 compliance requirements.

Q: Are there any differences in thermal performance between these components?

A: No. Both components share identical temperature coefficients (±400ppm/°C) and operating temperature ranges (-55°C to 275°C). Thermal behavior is equivalent.

Q: Does packaging differ between the two parts?

A: The TWW3J2R0 packaging designation is not specified in available data. The TWW3J2R0E is supplied in bulk packaging. For specific packaging requirements, consult the active product datasheet.

Q: Are both components suitable for safety-critical applications?

A: Both the TWW3J2R0 and TWW3J2R0E feature flame-proof and safety-rated construction. The TWW3J2R0E maintains these certifications while achieving modern RoHS3 compliance.