WW5JB50R0 Equivalent & Substitute Parts

Part Overview

The WW5JB50R0 is a 50 Ohm, 5W wirewound axial resistor manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring moisture-resistant performance across a wide operating temperature range of -55°C to 350°C. The part maintains Active product status with 924 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with the original component's functional requirements.

Substiute Parts

WW5JB50R0

Stackpole Electronics IncIn Stock: 999WW5JB50R0 Datasheet

Current PartRFQ

45J50RE

OhmiteIn Stock: 106945J50RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW5JB50R0 is determined by strict alignment of the following parameters:

• Resistance Value: 50 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power Rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package Type: Axial (exact match required)
• Temperature Coefficient: ±20ppm/°C (exact match required)
• Terminations: 2 (exact match required)

The substitute part 45J50RE from Ohmite meets all critical electrical and mechanical parameters. Both components are wirewound axial resistors with identical resistance, tolerance, power rating, and temperature coefficient specifications. Physical dimensions vary slightly but remain compatible with standard through-hole PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the WW5JB50R0 and 45J50RE are Active status components suitable for direct substitution based on electrical equivalence. The WW5JB50R0 carries ROHS3 compliance certification, while the 45J50RE is RoHS compliant. Both components meet EAR99 export classification requirements. Physical dimension differences (diameter and length) are minor and do not prevent interchangeability in standard through-hole PCB applications. Component selection should be based on availability, lead time, and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the 45J50RE replace the WW5JB50R0 in all applications?

A: Yes. Both components share identical electrical specifications: 50 Ohm resistance, ±5% tolerance, 5W power rating, wirewound composition, and ±20ppm/°C temperature coefficient. The axial package type and two-termination configuration are identical.

Q: Are there physical compatibility concerns?

A: The 45J50RE is slightly larger (0.343" diameter vs. 0.312" diameter; 0.937" length vs. 0.875" length). These dimensional differences are within standard tolerances for axial resistor through-hole mounting and do not affect PCB layout compatibility in typical applications.

Q: What is the difference in RoHS compliance between these parts?

A: The WW5JB50R0 is ROHS3 compliant, while the 45J50RE is RoHS compliant. Both meet regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Do moisture characteristics differ between these parts?

A: The WW5JB50R0 is specified as moisture resistant with Not Applicable MSL rating. The 45J50RE carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Both are suitable for standard environmental conditions.

Q: Are both parts currently available?

A: Yes. The WW5JB50R0 has 924 units in stock, and the 45J50RE has 964 units in stock as new original inventory.