Ohmite 42J27RE Equivalent & Substitute Parts

Part Overview

The Ohmite 42J27RE is a 27 Ohm, 2W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production and maintains full inventory availability. Equivalent and substitute parts are identified when component procurement requires alternatives due to supply constraints, lead time considerations, or specific application requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

42J27RE

OhmiteIn Stock: 108042J27RE Datasheet

Current PartRFQ

42J27R

OhmiteIn Stock: 100842J27R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 42J27RE are identified based on strict electrical and mechanical parameter matching. The primary substitution criterion is parametric equivalence: resistance value, tolerance, power rating, composition type, package configuration, and temperature coefficient must be identical. The 42J27R qualifies as a parametric equivalent because it maintains all core electrical specifications (27 Ohms ±5%, 2W wirewound) and identical physical dimensions (0.220" Dia x 0.406" L). Both parts are manufactured by Ohmite within the Ohmicone® 40 series and feature the same axial through-hole package.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J27RE and 42J27R are electrically and mechanically equivalent for circuit applications requiring a 27 Ohm, 2W axial wirewound resistor. Selection between these parts should be based on compliance requirements. The 42J27RE is ROHS3 compliant and suitable for applications subject to RoHS regulations. The 42J27R is RoHS non-compliant and appropriate for applications without RoHS compliance mandates. Both parts maintain REACH Unaffected status and EAR99 export classification. Inventory availability is 1069 units for 42J27RE and 917 units for 42J27R.

Frequently Asked Questions (FAQ)

Q: Can 42J27R be used as a direct replacement for 42J27RE in all applications?

A: The 42J27R is electrically and mechanically equivalent to the 42J27RE. The primary difference is RoHS compliance status. Use 42J27R only in applications where RoHS compliance is not required.

Q: What are the critical parameters for substitution between these parts?

A: Resistance (27 Ohms), tolerance (±5%), power rating (2W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and physical dimensions (0.220" Dia x 0.406" L) must remain identical for substitution.

Q: Are there any physical differences between 42J27RE and 42J27R?

A: No. Both parts share identical physical dimensions of 0.220" Dia x 0.406" L (5.60mm x 10.30mm) and are packaged as axial through-hole components.

Q: What is the significance of the RoHS compliance difference?

A: The 42J27RE meets ROHS3 compliance requirements, restricting hazardous substances. The 42J27R does not meet these restrictions. Selection depends on whether the application or end-use market requires RoHS compliance.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, from a circuit design perspective. Both parts have identical electrical specifications and physical footprints. PCB layout and schematic designs do not require modification when substituting between these parts, provided compliance requirements are satisfied.