WW5JB5R00 Equivalent & Substitute Parts

Part Overview

The WW5JB5R00 is a 5 Ohm, 5W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features moisture-resistant construction and is designed for applications requiring precision power dissipation in compact form factors. The part maintains Active product status with 1105 units in current inventory. Substitute parts are identified to support procurement flexibility, extended lead time mitigation, and supply chain continuity.

Substiute Parts

WW5JB5R00

Stackpole Electronics IncIn Stock: 1116WW5JB5R00 Datasheet

Current PartRFQ

ALSR055R000JE12

Vishay DaleIn Stock: 2122ALSR055R000JE12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW5JB5R00 is determined by strict equivalence across the following critical parameters:

• Resistance value: 5 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Physical dimensions: 0.312" Dia x 0.875" L (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Moisture resistance: Required feature
• RoHS3 compliance: Required certification

The ALSR055R000JE12 manufactured by Vishay Dale meets all substitution criteria. Both parts share identical resistance, tolerance, power rating, composition, package configuration, and physical dimensions. Both components feature moisture-resistant construction and maintain ROHS3 compliance. Temperature coefficient specifications are identical at ±50ppm/°C.

Parameter Comparison

Engineering Selection Recommendations

Both the WW5JB5R00 and ALSR055R000JE12 are qualified substitutes based on electrical and mechanical parameter equivalence. Selection between these parts should be based on:

Procurement Availability: The ALSR055R000JE12 currently maintains higher inventory (2070 units) compared to the WW5JB5R00 (1105 units), supporting extended production runs and reducing lead time risk.

Regulatory Compliance: Both parts maintain ROHS3 compliance and are suitable for applications subject to RoHS directives. The WW5JB5R00 carries REACH Unaffected status, while the ALSR055R000JE12 lists REACH status as Vendor Undefined. Applications requiring explicit REACH compliance documentation should prioritize the WW5JB5R00.

Operating Temperature Considerations: The WW5JB5R00 supports extended high-temperature operation to 350°C, while the ALSR055R000JE12 operates to 250°C maximum. Applications requiring sustained operation above 250°C must use the WW5JB5R00. For applications within the -55°C to 250°C range, both parts are functionally equivalent.

Manufacturer Preference: Design specifications may mandate specific manufacturer sourcing. Verify design documentation for manufacturer-locked requirements before substitution.

Frequently Asked Questions (FAQ)

Q: Can the ALSR055R000JE12 replace the WW5JB5R00 in all applications?

A: The ALSR055R000JE12 is electrically and mechanically equivalent for applications operating within -55°C to 250°C. Applications requiring sustained operation above 250°C must use the WW5JB5R00, as the Vishay Dale part is rated to 250°C maximum.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the WW5JB5R00 and ALSR055R000JE12 share identical axial package dimensions of 0.312" diameter by 0.875" length (7.92mm x 22.23mm). PCB layout and mechanical mounting are directly interchangeable.

Q: What is the difference in temperature coefficient between these parts?

A: There is no difference. Both parts specify ±50ppm/°C temperature coefficient, ensuring equivalent thermal stability across the operating range.

Q: Does the ALSR055R000JE12 meet REACH compliance requirements?

A: The ALSR055R000JE12 lists REACH status as Vendor Undefined. The WW5JB5R00 carries explicit REACH Unaffected status. Applications requiring documented REACH compliance should prioritize the WW5JB5R00 or obtain REACH documentation from Vishay Dale before substitution.

Q: Are both parts moisture-resistant?

A: Yes. Both the WW5JB5R00 and ALSR055R000JE12 feature moisture-resistant construction, suitable for applications in humid or corrosive environments.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes, provided operating temperature requirements fall within the overlapping range (-55°C to 250°C). Both parts are axial through-hole components with identical physical dimensions and electrical specifications within this range.