Ohmite 40J2K2 Equivalent & Substitute Parts

Part Overview

The Ohmite 40J2K2 is a 2.2 kOhms ±5% 10W through-hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is currently active in production and maintains 661 pieces in new original stock. The part operates with a temperature coefficient of ±20ppm/°C and features a compact axial package measuring 0.406" diameter by 1.902" length (10.30mm x 48.30mm). Identifying equivalent substitute parts is essential for supply chain continuity, design flexibility, and compliance with evolving regulatory requirements.

Substiute Parts

40J2K2

OhmiteIn Stock: 72440J2K2 Datasheet

Current PartRFQ

40J2K2E

OhmiteIn Stock: 126540J2K2E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40J2K2 are identified based on strict electrical and mechanical parameter matching. The primary substitution criterion requires identical resistance value (2.2 kOhms), tolerance (±5%), power rating (10W), composition (wirewound), and package configuration (axial). The physical dimensions (0.406" diameter x 1.902" length) and temperature coefficient (±20ppm/°C) must remain consistent to ensure mechanical fit and thermal performance equivalence. The substitute part 40J2K2E meets all these critical parameters while differing only in packaging format and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 40J2K2E serves as a direct parametric equivalent to the 40J2K2, with all critical electrical and mechanical specifications remaining identical. The primary distinction lies in regulatory compliance: the 40J2K2E achieves ROHS3 compliance, whereas the 40J2K2 is RoHS non-compliant. Both parts maintain active product status and share identical REACH and ECCN classifications. Selection between these parts should be based on regulatory requirements applicable to the end application. The 40J2K2E is suitable for applications requiring RoHS3 compliance, while the 40J2K2 remains available for applications without such restrictions. Packaging format differs (standard versus bulk), which may influence procurement decisions based on volume requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can the 40J2K2E be used as a direct replacement for the 40J2K2?

A: Yes. The 40J2K2E is electrically and mechanically equivalent to the 40J2K2. Both parts share identical resistance (2.2 kOhms), tolerance (±5%), power rating (10W), composition (wirewound), package type (axial), and physical dimensions (0.406" diameter x 1.902" length). The parts are interchangeable from a functional standpoint.

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

A: The primary difference is regulatory compliance. The 40J2K2E is ROHS3 compliant, while the 40J2K2 is RoHS non-compliant. Both parts are REACH unaffected and share the same ECCN classification (EAR99). Packaging format also differs: 40J2K2 uses standard packaging, while 40J2K2E uses bulk packaging.

Q: Are the physical dimensions identical between 40J2K2 and 40J2K2E?

A: Yes. Both parts measure 0.406" diameter by 1.902" length (10.30mm x 48.30mm), ensuring identical mechanical fit in circuit board layouts and component mounting applications.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS3 compliance, specify the 40J2K2E. For applications without RoHS compliance mandates, either part is acceptable based on availability and procurement preferences.

Q: Do these parts have different temperature coefficients?

A: No. Both the 40J2K2 and 40J2K2E maintain an identical temperature coefficient of ±20ppm/°C, ensuring equivalent thermal performance across operating conditions.