Ohmite 42J400 Equivalent & Substitute Parts

Part Overview

The Ohmite 42J400 is a 400 Ohms ±5% 2W through-hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is currently active in production and maintains 934 pieces in new original stock. The 42J400 is classified as RoHS non-compliant, which may necessitate identification of compliant alternatives for applications subject to RoHS regulations or procurement requirements mandating RoHS3 compliance.

Substiute Parts

42J400

OhmiteIn Stock: 102242J400 Datasheet

Current PartRFQ

42J400E

OhmiteIn Stock: 109342J400E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 42J400 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following criteria:

• Resistance value: 400 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 42J400E meets all parametric equivalence requirements and is therefore classified as a direct substitute. Packaging differences (Bulk versus standard packaging) do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 42J400E provides parametric equivalence to the 42J400 across all electrical and mechanical specifications. The primary distinction is regulatory compliance: the 42J400E carries ROHS3 certification, while the 42J400 is RoHS non-compliant. Selection between these parts should be based on application requirements and procurement compliance mandates. Both parts maintain active production status and adequate inventory levels. The 42J400E is available in bulk packaging, which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the 42J400E be used as a direct replacement for the 42J400?

A: Yes. The 42J400E is parametrically equivalent across all electrical and mechanical parameters, including resistance value, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions.

Q: What is the difference between the 42J400 and 42J400E?

A: The primary difference is RoHS compliance status. The 42J400E is ROHS3 compliant, while the 42J400 is RoHS non-compliant. Packaging format differs (Bulk for 42J400E versus standard for 42J400), but this does not affect component functionality or compatibility.

Q: Are there any dimensional or thermal differences between these parts?

A: No. Both parts share identical dimensions (0.220" Dia x 0.406" L / 5.60mm x 10.30mm) and temperature coefficient (±20ppm/°C).

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS3 compliance, the 42J400E is the appropriate choice. Both parts are active in production with sufficient inventory.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Bulk versus standard) is a logistics consideration only and does not impact electrical characteristics or mechanical compatibility.