Ohmite 40JR10 100 mOhms ±5% 10W Axial Wirewound Resistor

Part Overview

The Ohmite 40JR10 is a through-hole axial wirewound resistor rated for 10W power dissipation with a resistance value of 100 mOhms and ±5% tolerance. This component is part of the Ohmicone® 40 series and maintains active product status. Equivalent and substitute parts are identified based on matching electrical specifications (resistance, tolerance, power rating, temperature coefficient) and mechanical compatibility (axial package, terminal configuration, physical dimensions).

Substiute Parts

40JR10

OhmiteIn Stock: 89840JR10 Datasheet

Current PartRFQ

40JR10E

OhmiteIn Stock: 91140JR10E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 40JR10 is determined by strict equivalence across the following parameters:

• Electrical Match: Resistance value (100 mOhms), tolerance (±5%), power rating (10W), and temperature coefficient (±90 ppm/°C) must be identical
• Mechanical Compatibility: Package type (Axial), physical dimensions (0.406" Dia × 1.902" L), and terminal count (2) must match
• Composition: Wirewound construction required

The 40JR10E meets all substitution criteria as a parametric equivalent manufactured by Ohmite with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40JR10 and 40JR10E are active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on:

• Compliance Requirements: The 40JR10E is RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), while the 40JR10 is RoHS non-compliant. Applications requiring RoHS compliance must use the 40JR10E.
• Packaging Format: The 40JR10E is supplied in Bulk packaging, whereas the 40JR10 uses standard packaging. Procurement volume and handling requirements may influence selection.
• Regulatory Status: Both parts carry ECCN EAR99 classification. The 40JR10E specifies REACH Vendor Undefined status, while the 40JR10 is REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can the 40JR10E directly replace the 40JR10 in existing designs?

A: Yes. The 40JR10E is a parametric equivalent with identical resistance (100 mOhms), tolerance (±5%), power rating (10W), temperature coefficient (±90 ppm/°C), and physical dimensions (0.406" Dia × 1.902" L). Both use axial package configuration with two terminations and wirewound composition.

Q: What is the primary difference between these two parts?

A: The main differences are packaging format (Bulk vs. Standard) and RoHS compliance status. The 40JR10E is RoHS Compliant with defined Moisture Sensitivity Level 1, while the 40JR10 is RoHS non-compliant.

Q: Are there any operating temperature differences?

A: The 40JR10E specifies an operating temperature range of -55°C to 275°C. The 40JR10 does not provide an operating temperature specification in the available data. Both maintain the same temperature coefficient of ±90 ppm/°C.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided compliance and packaging requirements are met. Both parts have identical axial package dimensions and two-terminal configuration, allowing direct board-level substitution.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory and compliance requirements. For RoHS-compliant applications, use the 40JR10E. For applications without RoHS requirements, either part is electrically and mechanically equivalent.