Ohmite 42J2K7 2.7kΩ 2W Axial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 42J2K7 is a 2.7 kOhms ±5% 2W through-hole resistor with axial wirewound construction from the Ohmicone® 40 series. This component is designed for applications requiring precision resistive elements with moderate power dissipation in compact axial packaging. The part is currently active in production with 775 units in stock. Substitute parts are identified when packaging configurations or compliance requirements differ while maintaining identical electrical and mechanical specifications.

Substiute Parts

42J2K7

OhmiteIn Stock: 79642J2K7 Datasheet

Current PartRFQ

42J2K7E

OhmiteIn Stock: 77342J2K7E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 42J2K7 is determined by strict equivalence across the following parameters:

• Resistance value: 2.7 kOhms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Package configuration: Axial
• Physical dimensions: 0.220" Dia x 0.406" L (5.60mm x 10.30mm)
• Number of terminations: 2

The identified substitute part 42J2K7E maintains complete electrical and mechanical equivalence. Differences are limited to packaging format (bulk versus standard) and RoHS compliance status, which do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 42J2K7 and 42J2K7E are active production components suitable for circuit integration. Selection between these parts should be based on regulatory and procurement requirements:

The 42J2K7 is appropriate for applications where RoHS non-compliant components are acceptable or where standard packaging is required.

The 42J2K7E is the appropriate selection for applications subject to ROHS3 compliance mandates or where bulk packaging aligns with procurement workflows. Both parts carry identical electrical performance and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Are the 42J2K7 and 42J2K7E electrically identical?

A: Yes. Both parts share identical resistance (2.7 kOhms), tolerance (±5%), power rating (2W), temperature coefficient (±20ppm/°C), and wirewound composition. They are electrically interchangeable.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. The 42J2K7 is RoHS non-compliant, while the 42J2K7E is ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Can I use the 42J2K7E as a direct replacement for the 42J2K7 in my circuit?

A: Yes. The 42J2K7E is a direct functional substitute. Physical dimensions, termination configuration, and all electrical parameters are identical, ensuring drop-in compatibility.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical circuit behavior.

Q: What packaging format should I select?

A: Select based on procurement requirements. Standard packaging (42J2K7) is typical for individual component orders, while bulk packaging (42J2K7E) is suited for high-volume manufacturing or inventory consolidation.

Q: Are both parts currently available?

A: Yes. The 42J2K7 has 775 units in stock, and the 42J2K7E has 691 units in stock.