WW10JB100R Equivalent & Substitute Parts

Part Overview

The WW10JB100R is a 100 Ohm, 5% tolerance, 10W 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 687 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

WW10JB100R

Stackpole Electronics IncIn Stock: 731WW10JB100R Datasheet

Current PartRFQ

40J100E

OhmiteIn Stock: 126140J100E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW10JB100R is determined by strict equivalence across the following parameters:

• Resistance value: 100 Ohms
• Tolerance: ±5%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The substitute part 40J100E from Ohmite meets all electrical and mechanical requirements. Both components share identical resistance, tolerance, power rating, composition, and temperature coefficient specifications. Axial package compatibility is maintained, and both parts satisfy the same regulatory frameworks.

Parameter Comparison

Engineering Selection Recommendations

Both WW10JB100R and 40J100E maintain Active product status, ensuring continued availability and manufacturer support. Both components are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. The electrical specifications—100 Ohms, ±5% tolerance, 10W power rating, and ±20ppm/°C temperature coefficient—are identical across both parts.

Physical dimensions differ slightly: the WW10JB100R measures 0.375" diameter by 1.780" length, while the 40J100E measures 0.406" diameter by 1.902" length. These dimensional variations remain within typical axial resistor tolerances and do not affect electrical performance or standard PCB footprint compatibility for through-hole applications.

Selection between these parts should be based on availability, lead time, and procurement requirements. Both components satisfy identical electrical and mechanical specifications for 100 Ohm, 10W axial wirewound resistor applications.

Frequently Asked Questions (FAQ)

Q: Can the 40J100E replace the WW10JB100R in existing designs?

A: Yes. Both parts share identical electrical specifications: 100 Ohms, ±5% tolerance, 10W power rating, ±20ppm/°C temperature coefficient, and axial through-hole package configuration. Regulatory compliance is equivalent across both components.

Q: Are there physical compatibility concerns between these parts?

A: The 40J100E is slightly larger in diameter (0.406" vs 0.375") and length (1.902" vs 1.780"). These dimensional differences are within standard axial resistor tolerances and do not affect PCB footprint compatibility for typical through-hole applications. Component spacing should be verified in high-density layouts.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both WW10JB100R and 40J100E are ROHS3 Compliant, REACH Unaffected, and classified as EAR99. Both share the same HTSUS code (8533.21.0080).

Q: What determines substitution eligibility for this resistor category?

A: Substitution is based on matching resistance value, tolerance, power rating, composition (wirewound), package type (axial), temperature coefficient, and regulatory compliance status. All these parameters are identical between the WW10JB100R and 40J100E.

Q: Are there operating temperature differences between these parts?

A: The WW10JB100R specifies an operating temperature range of -55°C to 350°C. The 40J100E does not provide an explicit operating temperature range in the available specifications. Both parts share the same ±20ppm/°C temperature coefficient.