Ohmite 42J50R Equivalent & Substitute Parts

Part Overview

The Ohmite 42J50R is a 50 Ohm, 2W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistive elements with stable performance across operating conditions. The part maintains Active product status with 968 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained, enabling procurement flexibility while preserving circuit performance and reliability.

Substiute Parts

42J50R

OhmiteIn Stock: 102142J50R Datasheet

Current PartRFQ

42J50RE

OhmiteIn Stock: 81042J50RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 42J50R is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 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 42J50RE meets all substitution criteria as a parametric equivalent, maintaining identical electrical specifications and mechanical form factor while differing in packaging configuration and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J50R and 42J50RE are Active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on compliance requirements and packaging needs:

The 42J50R is suitable for applications where RoHS non-compliant components are acceptable and standard packaging is preferred. The 42J50RE provides RoHS compliance and is available in bulk packaging, making it appropriate for high-volume production environments or applications subject to RoHS regulatory requirements. Both parts carry EAR99 export classification and maintain equivalent performance characteristics for direct circuit substitution.

Frequently Asked Questions (FAQ)

Q: Can the 42J50RE replace the 42J50R in existing designs?

A: Yes. The 42J50RE is a parametric equivalent with identical resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between the 42J50R and 42J50RE?

A: The primary differences are packaging configuration (standard versus bulk) and RoHS compliance status. The 42J50R is RoHS non-compliant, while the 42J50RE is RoHS Compliant. All electrical and mechanical parameters are identical.

Q: Which part should be selected for RoHS-regulated applications?

A: The 42J50RE is RoHS Compliant and is the appropriate choice for applications subject to RoHS directives or customer requirements for lead-free components.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts measure 0.220" Dia x 0.406" L (5.60mm x 10.30mm) and use identical axial packaging, ensuring compatibility with existing PCB layouts and assembly processes.

Q: What inventory levels are available?

A: The 42J50R has 968 units in stock, while the 42J50RE has 752 units available. Both maintain Active product status.