Equivalent & Substitute Parts for TWW3J3R0

Part Overview

The TWW3J3R0 is a 3 Ohm, 5% tolerance, 3W through-hole radial wirewound resistor manufactured by Ohmite. This component features flame-proof and safety construction suitable for high-reliability applications requiring thermal stability across a wide operating temperature range of -55°C to 275°C.

The TWW3J3R0 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this resistor specification is required.

Substiute Parts

TWW3J3R0

OhmiteIn Stock: 957TWW3J3R0 Datasheet

Current PartRFQ

TWW3J3R0E

OhmiteIn Stock: 770TWW3J3R0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TWW3J3R0 is determined by strict equivalence across the following critical parameters:

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

The substitute part TWW3J3R0E meets all electrical and mechanical specifications required for direct substitution. Both parts are manufactured by Ohmite within the same TWW series and maintain identical performance characteristics across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The TWW3J3R0E is the direct equivalent substitute for the obsolete TWW3J3R0. Both components are manufactured by Ohmite and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The TWW3J3R0E is classified as active production, ensuring ongoing availability and supply chain continuity. Additionally, the TWW3J3R0E achieves ROHS3 compliance, whereas the original TWW3J3R0 is RoHS non-compliant. Both parts maintain REACH Unaffected status and carry the same ECCN and HTSUS classifications.

For new designs, repairs, and production applications requiring a 3 Ohm, 3W wirewound radial resistor with flame-proof and safety features, the TWW3J3R0E provides full functional and mechanical compatibility with identical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can TWW3J3R0E be used as a direct replacement for TWW3J3R0?

A: Yes. The TWW3J3R0E is a direct equivalent substitute. Both components share identical resistance, tolerance, power rating, composition, package configuration, thermal characteristics, and physical dimensions. No circuit modifications or board layout adjustments are required.

Q: What is the primary reason to transition from TWW3J3R0 to TWW3J3R0E?

A: The TWW3J3R0 is obsolete. The TWW3J3R0E is the active production equivalent from the same manufacturer and series, ensuring component availability and supply chain reliability for current and future applications.

Q: Are there compliance differences between these parts?

A: Yes. The TWW3J3R0E is ROHS3 compliant, while the TWW3J3R0 is RoHS non-compliant. Both parts maintain REACH Unaffected status. For applications subject to RoHS regulations, the TWW3J3R0E is the appropriate selection.

Q: Do these resistors have identical thermal performance?

A: Yes. Both parts maintain the same temperature coefficient of ±400ppm/°C and identical operating temperature range of -55°C to 275°C, ensuring equivalent thermal stability and performance across all specified conditions.

Q: Are the physical dimensions and PCB footprints identical?

A: Yes. Both components have identical radial package dimensions of 0.492" L x 0.354" W (12.50mm x 9.00mm) and maximum seated height of 1.024" (26.00mm). No PCB layout modifications are necessary for substitution.