TWW3JR47 Equivalent & Substitute Parts

Part Overview

The TWW3JR47 is a 470 mOhms ±5% 3W through-hole wirewound resistor manufactured by Ohmite in radial configuration. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part features flame-proof and safety-rated construction suitable for industrial and safety-critical applications.

Substiute Parts

TWW3JR47

OhmiteIn Stock: 1026TWW3JR47 Datasheet

Current PartRFQ

TWW3JR47E

OhmiteIn Stock: 5605TWW3JR47E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TWW3JR47 is based on electrical and mechanical parameter equivalence within the Ohmite TWW series. The substitute part must maintain identical specifications across the following critical parameters:

• Resistance value: 470 mOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Radial
• Operating temperature range: -55°C to 275°C
• Temperature coefficient: ±400ppm/°C
• Physical dimensions: 12.50mm × 9.00mm × 26.00mm (max height)
• Safety and flame-proof features

The TWW3JR47E qualifies as a direct substitute based on complete electrical and mechanical parameter alignment within the TWW series specification.

Parameter Comparison

Engineering Selection Recommendations

The TWW3JR47E is the direct equivalent substitute for the obsolete TWW3JR47. Both parts maintain identical electrical and mechanical specifications, ensuring pin-for-pin and form-factor compatibility in existing circuit designs.

The primary distinction between the two parts is product status and regulatory compliance. The TWW3JR47E is an active production part with ROHS3 compliance, whereas the TWW3JR47 is obsolete and RoHS non-compliant. For new designs and production applications, the TWW3JR47E is the appropriate selection. For legacy system maintenance requiring exact part matching, the TWW3JR47 specifications remain valid for reference.

Both parts carry identical REACH and ECCN classifications, confirming regulatory equivalence for export and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can TWW3JR47E be used as a direct replacement for TWW3JR47?

A: Yes. The TWW3JR47E is electrically and mechanically identical to the TWW3JR47 across all specified parameters, including resistance, tolerance, power rating, temperature range, and physical dimensions. Direct substitution is valid for circuit applications.

Q: What is the primary reason for substitution?

A: The TWW3JR47 is classified as obsolete. The TWW3JR47E provides continued availability as an active production part within the same TWW series.

Q: Are there packaging differences between these parts?

A: The TWW3JR47 is supplied in standard packaging, while the TWW3JR47E is supplied in bulk packaging. Both maintain identical radial component form factors and PCB mounting characteristics.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition but does not alter the electrical specifications, performance characteristics, or operating parameters of the resistor.

Q: Are these parts suitable for safety-critical applications?

A: Both parts feature flame-proof and safety-rated construction. Compliance with specific safety standards must be verified against application requirements and relevant certification documentation.