40J2R0 Equivalent & Substitute Parts

Part Overview

The Ohmite 40J2R0 is a 2 Ohm, 5% tolerance, 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision current limiting, load balancing, and power dissipation in industrial and electronic equipment. The part is currently active in production with 875 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, packaging preferences, or compliance requirements.

Substiute Parts

40J2R0

OhmiteIn Stock: 95540J2R0 Datasheet

Current PartRFQ

40J2R0E

OhmiteIn Stock: 141040J2R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40J2R0E qualifies as a parametric equivalent based on the following criteria:

• Identical resistance value: 2 Ohms
• Identical tolerance: ±5%
• Identical power rating: 10W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±50ppm/°C
• Identical physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Identical number of terminations: 2

The primary difference is packaging format (Bulk vs. standard) and compliance certifications. Both parts are manufactured by Ohmite and maintain full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 40J2R0 and 40J2R0E are active production components suitable for direct substitution in applications requiring 2 Ohm, 10W axial wirewound resistors. Selection between these parts should be based on:

• RoHS compliance requirements: The 40J2R0E is RoHS Compliant, while the 40J2R0 is RoHS non-compliant. Applications subject to RoHS directives must use the 40J2R0E.
• Packaging requirements: The 40J2R0E is supplied in Bulk packaging, while the 40J2R0 uses standard packaging. Bulk packaging may be preferred for high-volume manufacturing operations.
• Inventory availability: The 40J2R0E has higher stock levels (1309 units) compared to the 40J2R0 (875 units).

Frequently Asked Questions (FAQ)

Q: Can the 40J2R0E replace the 40J2R0 in existing designs?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, temperature coefficient, and physical dimensions. The 40J2R0E can be used as a direct substitute in any application designed for the 40J2R0.

Q: What is the difference between the 40J2R0 and 40J2R0E?

A: The primary differences are packaging format (Bulk vs. standard) and RoHS compliance status. The 40J2R0E is RoHS Compliant with MSL rating of 1 (Unlimited), while the 40J2R0 is RoHS non-compliant with Not Applicable MSL. All electrical and mechanical specifications are identical.

Q: Which part should I select for RoHS-regulated applications?

A: The 40J2R0E must be used for applications subject to RoHS directives, as it carries RoHS Compliant certification. The 40J2R0 is not suitable for RoHS-regulated environments.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 40J2R0 and 40J2R0E have identical dimensions of 0.406" Dia x 1.902" L (10.30mm x 48.30mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: What packaging format is each part supplied in?

A: The 40J2R0 is supplied in standard packaging, while the 40J2R0E is supplied in Bulk packaging. Bulk packaging is typically used for high-volume manufacturing and may offer cost advantages for large-quantity orders.