Ohmite 43J2K2 Equivalent & Substitute Parts

Part Overview

The Ohmite 43J2K2 is a 2.2 kOhms ±5% 3W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production and maintains 699 units in new original stock. The primary reason for identifying substitute parts relates to packaging availability and RoHS compliance requirements in modern supply chains, as the original 43J2K2 is RoHS non-compliant.

Substiute Parts

43J2K2

OhmiteIn Stock: 72043J2K2 Datasheet

Current PartRFQ

43J2K2E

OhmiteIn Stock: 107343J2K2E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43J2K2 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for resistance value, tolerance, power rating, composition type, package configuration, temperature coefficient, and physical dimensions. Packaging format (tape and reel versus bulk) does not affect electrical or mechanical compatibility and therefore does not preclude substitution. The primary differentiator between the main part and its substitute is regulatory compliance status, specifically RoHS certification.

Key Parameters for Substitution:

• Resistance: 2.2 kOhms
• Tolerance: ±5%
• Power Rating: 3W
• Composition: Wirewound
• Package/Case: Axial
• Temperature Coefficient: ±20ppm/°C
• Physical Dimensions: 0.220" Dia x 0.594" L

Parameter Comparison

Engineering Selection Recommendations

The 43J2K2E serves as a direct parametric equivalent to the 43J2K2, with all electrical and mechanical specifications remaining identical. The primary distinction is regulatory compliance: the 43J2K2E achieves ROHS3 compliance, whereas the original 43J2K2 is RoHS non-compliant. For applications subject to RoHS directives or requiring compliance documentation, the 43J2K2E is the appropriate selection. Both parts maintain active production status and are available in new original stock. The 43J2K2E offers higher inventory availability at 1058 units compared to 699 units for the 43J2K2.

Frequently Asked Questions (FAQ)

Q: Are the 43J2K2 and 43J2K2E electrically identical? A: Yes. Both parts share identical resistance (2.2 kOhms), tolerance (±5%), power rating (3W), temperature coefficient (±20ppm/°C), and wirewound composition. They are parametric equivalents.

Q: Can the 43J2K2E be used as a direct replacement for the 43J2K2 in existing designs? A: Yes. The 43J2K2E maintains identical physical dimensions (0.220" Dia x 0.594" L), axial package configuration, and all electrical specifications. No circuit modifications or PCB layout changes are required.

Q: What is the difference between the packaging formats listed? A: The 43J2K2 is supplied in standard packaging, while the 43J2K2E is supplied in bulk packaging. This affects order quantities and handling but does not impact electrical or mechanical performance.

Q: Why would I choose the 43J2K2E over the 43J2K2? A: The 43J2K2E is ROHS3 compliant, making it suitable for applications and markets requiring RoHS certification. It also offers higher inventory availability.

Q: Are there any performance differences between these parts? A: No. Both parts are manufactured by Ohmite within the Ohmicone® 40 series and deliver identical electrical performance across all specified parameters.