WW3JB500R Equivalent & Substitute Parts

Part Overview

The WW3JB500R is a 500 Ohm, 3W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component is designed for applications requiring moisture-resistant performance across an extended operating temperature range of -55°C to 350°C. The part maintains Active product status with 729 units currently in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while meeting specific application requirements or inventory constraints.

Substiute Parts

WW3JB500R

Stackpole Electronics IncIn Stock: 801WW3JB500R Datasheet

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WW3FT500R

Stackpole Electronics IncIn Stock: 2601WW3FT500R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW3JB500R is determined by the following critical parameters:

• Resistance value: 500 Ohms (exact match required)
• Power rating: 3W (exact match required)
• Package type: Axial (exact match required)
• Composition: Wirewound (exact match required)
• Operating temperature range: -55°C to 350°C (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Physical dimensions: 0.187" Dia x 0.560" L (exact match required)
• Moisture resistance: Required feature (exact match required)

The WW3FT500R qualifies as a substitute part because it maintains all critical electrical and mechanical parameters while offering improved tolerance specification (±1% versus ±5%). Tolerance improvement does not compromise compatibility and may enhance circuit performance in precision applications.

Parameter Comparison

Engineering Selection Recommendations

Both the WW3JB500R and WW3FT500R maintain Active product status and full ROHS3 compliance. Selection between these parts should be based on tolerance requirements and packaging format availability. The WW3JB500R is suitable for applications where ±5% tolerance meets circuit specifications and bulk packaging is preferred. The WW3FT500R provides tighter tolerance control (±1%) for precision applications and is available in Cut Tape format with higher inventory levels. Both parts are electrically and mechanically interchangeable within their specified tolerance parameters.

Frequently Asked Questions (FAQ)

Q: Can WW3FT500R replace WW3JB500R in existing designs? A: Yes. The WW3FT500R maintains identical resistance value, power rating, package type, operating temperature range, and physical dimensions. The improved tolerance specification (±1% versus ±5%) provides enhanced precision without compromising compatibility.

Q: Are there packaging differences between these parts? A: Yes. The WW3JB500R is supplied in Bulk packaging, while the WW3FT500R is supplied in Cut Tape (CT) format. Both formats contain the same component; packaging selection depends on assembly process requirements and inventory management preferences.

Q: Do both parts meet the same compliance standards? A: Yes. Both the WW3JB500R and WW3FT500R are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Compliance certifications are identical.

Q: What determines substitution eligibility for 500 Ohm 3W axial wirewound resistors? A: Substitution requires exact matching of resistance value, power rating, package type, composition, operating temperature range, temperature coefficient, physical dimensions, and moisture resistance features. Tolerance may be improved without affecting compatibility.

Q: Can these parts be used in high-temperature applications? A: Yes. Both parts are rated for operating temperatures from -55°C to 350°C, supporting extended temperature range applications including high-temperature industrial and automotive environments.