Ohmite 42J10R Equivalent & Substitute Parts

Part Overview

The Ohmite 42J10R is a 10 Ohm, 2W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active and remains in production. Equivalent and substitute parts are identified when component availability is limited, when specific packaging requirements must be met, or when compliance certifications need to be updated for new designs.

Substiute Parts

42J10R

OhmiteIn Stock: 73042J10R Datasheet

Current PartRFQ

42J10RE

OhmiteIn Stock: 105342J10RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 42J10R is determined by matching the following critical parameters:

• Resistance value: 10 Ohms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.220" Dia x 0.406" L (5.60mm x 10.30mm)
• Termination count: 2

The 42J10RE meets all electrical and mechanical substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J10R and 42J10RE are Active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts is determined by compliance and packaging requirements:

The 42J10RE is RoHS Compliant and suitable for applications requiring environmental compliance certification. The 42J10R is RoHS non-compliant and appropriate for legacy designs or applications without RoHS requirements.

Packaging differs between the two parts: the 42J10R is supplied in tape and reel format, while the 42J10RE is supplied in bulk packaging. Bulk packaging may be preferred for prototype builds or low-volume applications, while tape and reel is standard for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 42J10RE replace the 42J10R in all applications?

A: The 42J10RE is electrically and mechanically identical to the 42J10R. Substitution is valid for all circuit applications where the electrical parameters match. Compliance requirements and packaging format should be evaluated for your specific application.

Q: What is the difference between the 42J10R and 42J10RE?

A: The primary differences are RoHS compliance status and packaging format. The 42J10RE is RoHS Compliant and supplied in bulk packaging. The 42J10R is RoHS non-compliant and supplied in tape and reel format. All electrical and mechanical specifications are identical.

Q: Does packaging format affect component performance?

A: Packaging format does not affect electrical or mechanical performance. Tape and reel packaging is optimized for automated assembly, while bulk packaging is suitable for manual assembly or prototype applications.

Q: Are there operating temperature differences between these parts?

A: The 42J10RE specifies an operating temperature range of -55°C ~ 275°C. The 42J10R does not specify an operating temperature range in the provided data. Both parts use identical wirewound composition and temperature coefficient specifications.

Q: Which part should I select for a new design?

A: For new designs, the 42J10RE is recommended due to RoHS Compliance status. For legacy system maintenance or applications without compliance requirements, either part is suitable based on availability and packaging needs.