WRF3JB5R10 Equivalent & Substitute Parts

Part Overview

The WRF3JB5R10 is a 5.1 Ohm, 3W axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring flame-proof and moisture-resistant characteristics with safety-rated construction. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. The CB3JB5R10 serves as the manufacturer-recommended replacement, offering equivalent electrical performance with extended operational capabilities.

Substiute Parts

WRF3JB5R10

Stackpole Electronics IncIn Stock: 697WRF3JB5R10 Datasheet

Current PartRFQ

CB3JB5R10

Stackpole Electronics IncIn Stock: 1029CB3JB5R10 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WRF3JB5R10 with the CB3JB5R10 is based on strict equivalence of the following critical parameters:

• Resistance value: 5.1 Ohms (identical)
• Tolerance: ±5% (identical)
• Power rating: 3W (identical)
• Composition: Wirewound (identical)
• Package configuration: Axial (identical)
• Safety features: Flame Proof, Moisture Resistant, Safety (identical)
• Number of terminations: 2 (identical)
• RoHS compliance: ROHS3 Compliant (identical)

The CB3JB5R10 is classified as an active product with manufacturer-recommended status, providing supply continuity for the obsolete WRF3JB5R10 series.

Parameter Comparison

Engineering Selection Recommendations

The CB3JB5R10 is the manufacturer-recommended substitute for the obsolete WRF3JB5R10. Both components meet identical electrical specifications for resistance, tolerance, and power rating. The CB3JB5R10 maintains active product status, ensuring supply availability and ongoing manufacturer support. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The CB3JB5R10 provides an extended operating temperature range (-55°C to 275°C versus -55°C to 225°C) and improved temperature coefficient stability (±200 ppm/°C versus -80/+900 ppm/°C), offering enhanced performance margins in thermal environments. Physical dimensions differ between the two variants; design verification is required to confirm mechanical fit within existing board layouts.

Frequently Asked Questions (FAQ)

Q: Can the CB3JB5R10 be used as a direct replacement for the WRF3JB5R10?

A: The CB3JB5R10 is electrically equivalent to the WRF3JB5R10 across all critical parameters: resistance value, tolerance, power rating, composition, and safety features. Physical dimensions differ; mechanical fit verification is required before implementation.

Q: What is the primary reason for substitution?

A: The WRF3JB5R10 is classified as obsolete. The CB3JB5R10 is the manufacturer-recommended active alternative, providing supply continuity and ongoing support.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: How do the temperature characteristics compare?

A: The CB3JB5R10 operates across a wider temperature range (-55°C to 275°C versus -55°C to 225°C) and exhibits tighter temperature coefficient control (±200 ppm/°C versus -80/+900 ppm/°C).

Q: What physical considerations apply to substitution?

A: The CB3JB5R10 has larger dimensions (0.315" Square x 0.866" L) compared to the WRF3JB5R10 (0.197" Dia x 0.630" L). Board layout and component spacing must be verified for compatibility.

Q: Are both parts available in the same packaging format?

A: Both components use axial package configuration. The WRF3JB5R10 is supplied in standard packaging, while the CB3JB5R10 is supplied in bulk packaging.