Ohmite 23J40R Equivalent & Substitute Parts

Part Overview

The Ohmite 23J40R is a 40 Ohm, 3W wirewound axial resistor with ±5% tolerance and flame retardant coating. This component is classified as Active product status and is designed for through-hole applications requiring reliable power dissipation in industrial and commercial circuits. Substitute parts are identified to address inventory availability, packaging preferences, or compliance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

23J40R

OhmiteIn Stock: 93423J40R Datasheet

Current PartRFQ

23J40RE

OhmiteIn Stock: 78323J40RE Datasheet

Parametric EquivalentRFQ

23J40RE

OhmiteIn Stock: 78323J40RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Ohmite 23J40R is based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 40 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Physical dimensions: 0.220" Dia x 0.516" L (exact match required)
• Temperature coefficient: ±30ppm/°C (exact match required)
• Features: Flame retardant coating and safety characteristics (exact match required)

The identified substitute part 23J40RE maintains all critical electrical and mechanical parameters, differing only in packaging configuration and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 23J40R and 23J40RE are Active status components from Ohmite's Series 20 wirewound resistor line. Selection between these parts should be based on the following criteria:

23J40R: Select this part number when standard packaging is required and RoHS non-compliant components are acceptable for the application.

23J40RE: Select this part number when RoHS compliance is mandated by design or regulatory requirements, or when bulk packaging is preferred for high-volume production. This variant maintains identical electrical and mechanical specifications while offering improved environmental compliance status.

Both parts are classified under ECCN EAR99 and carry the same core electrical characteristics necessary for 40 Ohm, 3W power dissipation applications in axial through-hole configurations.

Frequently Asked Questions (FAQ)

Q: Can 23J40RE be used as a direct replacement for 23J40R in existing designs?

A: Yes. The 23J40RE is electrically and mechanically identical to the 23J40R. Both components share the same resistance value (40 Ohms), tolerance (±5%), power rating (3W), physical dimensions (0.220" Dia x 0.516" L), and wirewound composition with flame retardant coating. The primary differences are packaging format and RoHS compliance status.

Q: What is the difference between the packaging configurations?

A: The 23J40R is supplied in standard packaging, while the 23J40RE is supplied in bulk packaging. Both maintain identical component specifications and are suitable for through-hole PCB assembly.

Q: Are there any compliance differences between these parts?

A: The 23J40RE is RoHS Compliant with MSL rating of 1 (Unlimited), while the 23J40R is RoHS non-compliant with MSL listed as Not Applicable. If your application requires RoHS compliance, the 23J40RE is the appropriate selection.

Q: Do these resistors have the same temperature coefficient?

A: Yes. Both the 23J40R and 23J40RE have a temperature coefficient of ±30ppm/°C, ensuring consistent performance across the operating temperature range.

Q: Are both parts currently available?

A: Both parts are classified as Active product status. The 23J40R has 907 pieces in stock, and the 23J40RE has 675 pieces in stock.