Ohmite 42J30R Equivalent & Substitute Parts

Part Overview

The Ohmite 42J30R is a 30 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 680 units currently in stock. Substitute parts are identified when packaging configurations or compliance requirements differ while maintaining identical electrical and mechanical specifications.

Substiute Parts

42J30R

OhmiteIn Stock: 75242J30R Datasheet

Current PartRFQ

42J30RE

OhmiteIn Stock: 114742J30RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 42J30R is determined by matching the following critical parameters:

• Resistance value: 30 Ohms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Wirewound
• Package/Case: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.220" Dia x 0.406" L (5.60mm x 10.30mm)
• Number of terminations: 2

The identified substitute part 42J30RE maintains all electrical and mechanical specifications. Differentiation occurs in packaging configuration (Bulk versus standard) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J30R and 42J30RE are electrically and mechanically identical components from the Ohmicone® 40 series. Selection between these parts is determined by regulatory and packaging requirements:

The 42J30R is suitable for applications where RoHS non-compliant components are acceptable and standard packaging is required.

The 42J30RE is the appropriate selection for applications requiring ROHS3 compliance. This part is available in Bulk packaging configuration and maintains higher inventory availability (1115 units versus 680 units).

Both parts carry Active product status and are suitable for direct substitution in circuit designs requiring 30 Ohm, 2W axial wirewound resistors with ±5% tolerance and ±20ppm/°C temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can 42J30RE replace 42J30R in all applications?

A: Yes, electrically and mechanically. The 42J30RE differs only in RoHS compliance status (ROHS3 Compliant) and packaging configuration (Bulk). If your application or supply chain requires RoHS3 compliance, 42J30RE is the direct substitute.

Q: What is the difference between standard and Bulk packaging?

A: Packaging configuration affects order quantities and handling. Standard packaging is the default configuration for 42J30R. Bulk packaging for 42J30RE is designed for higher-volume procurement. Both contain identical components.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.220" Dia x 0.406" L (5.60mm x 10.30mm) and are axial package type with 2 terminations. They are mechanically interchangeable.

Q: What determines substitution eligibility?

A: Substitution is valid when resistance (30 Ohms), tolerance (±5%), power rating (2W), composition (Wirewound), package type (Axial), temperature coefficient (±20ppm/°C), and physical dimensions are identical. Both parts meet these criteria.

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements. For RoHS3-compliant applications, specify 42J30RE. For applications without RoHS requirements, either part is acceptable based on availability and packaging needs.