Ohmite 40F5K0 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F5K0 is a 5 kOhms ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production and maintains 898 pieces in new original stock. The part is classified as RoHS non-compliant. Identifying equivalent and substitute parts is necessary for procurement flexibility, supply chain continuity, and compliance with evolving regulatory requirements across different manufacturing environments.

Substiute Parts

40F5K0

OhmiteIn Stock: 94640F5K0 Datasheet

Current PartRFQ

40F5K0E

OhmiteIn Stock: 129340F5K0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Ohmite 40F5K0 is determined by strict equivalence across the following critical parameters:

• Resistance value: 5 kOhms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial
• Physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Termination count: 2

The Ohmite 40F5K0E qualifies as a parametric equivalent because it maintains identical electrical specifications and physical form factor. The primary distinction lies in packaging format (Bulk versus standard packaging) and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F5K0 and 40F5K0E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

40F5K0: Select this part number when standard packaging is required and RoHS non-compliant components are acceptable for the application.

40F5K0E: Select this part number when RoHS compliance is mandated, bulk packaging is suitable for manufacturing operations, or when higher inventory availability is a procurement priority. This variant provides regulatory compliance with MSL 1 rating, indicating unlimited moisture exposure tolerance.

Both parts are suitable for direct substitution in applications requiring 5 kOhms ±1% 10W axial wirewound resistors with identical physical form factors and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 40F5K0E directly replace the 40F5K0 in existing designs?

A: Yes. Both parts maintain identical resistance, tolerance, power rating, composition, package type, and physical dimensions. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between the 40F5K0 and 40F5K0E?

A: The primary differences are packaging format (standard versus bulk), RoHS compliance status (non-compliant versus compliant), and moisture sensitivity level classification. Electrical and mechanical specifications are identical.

Q: Does RoHS compliance affect component performance?

A: RoHS compliance indicates the absence of restricted substances in the component composition. It does not alter electrical performance or thermal characteristics. Selection should be based on regulatory requirements for the end application.

Q: Are the physical dimensions identical between both part numbers?

A: Yes. Both parts measure 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and are suitable for identical PCB layouts and mechanical assemblies.

Q: What does MSL 1 (Unlimited) mean for the 40F5K0E?

A: MSL 1 indicates the component can be exposed to moisture indefinitely without degradation, eliminating the need for controlled storage or baking procedures prior to assembly.