Ohmite 40F10K Equivalent & Substitute Parts

Part Overview

The Ohmite 40F10K is a 10 kOhms ±1% 10W through-hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is classified as Active product status and is currently in stock with 744 pieces available. The 40F10K is RoHS non-compliant, which may necessitate identification of compliant substitute parts for applications requiring regulatory adherence or long-term supply chain compatibility.

Substiute Parts

40F10K

OhmiteIn Stock: 82540F10K Datasheet

Current PartRFQ

40F10KE

OhmiteIn Stock: 103040F10KE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40F10K are identified based on electrical and mechanical parameter equivalence. The primary substitution criterion is parametric matching across resistance value, tolerance, power rating, composition type, and physical package configuration. The 40F10KE qualifies as a parametric equivalent because it maintains identical electrical specifications (10 kOhms ±1% 10W wirewound) and mechanical dimensions (0.406" Dia x 1.902" L). The key differentiator between the main part and substitute is packaging format and RoHS compliance status. Substitution is valid when all critical parameters—resistance, tolerance, power rating, composition, package type, and temperature coefficient—remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

The 40F10K and 40F10KE are electrically and mechanically interchangeable components. Selection between these parts should be based on regulatory compliance requirements and packaging needs. The 40F10K is suitable for applications where RoHS non-compliance is acceptable or where legacy component specifications are required. The 40F10KE is the appropriate selection for applications requiring ROHS3 compliance and is available in bulk packaging format. Both components maintain Active product status and are manufactured by Ohmite within the Ohmicone® 40 series, ensuring consistent performance characteristics across all critical electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Are the 40F10K and 40F10KE electrically identical? A: Yes. Both components have identical resistance (10 kOhms), tolerance (±1%), power rating (10W), composition (wirewound), and temperature coefficient (±20ppm/°C).

Q: Can the 40F10KE be used as a direct replacement for the 40F10K? A: Yes, from an electrical and mechanical standpoint. The 40F10KE maintains identical physical dimensions (0.406" Dia x 1.902" L) and axial package configuration, enabling direct substitution in circuit designs.

Q: What is the primary difference between these two parts? A: The main differences are RoHS compliance status and packaging format. The 40F10K is RoHS non-compliant with standard packaging, while the 40F10KE is ROHS3 compliant and supplied in bulk packaging.

Q: Which part should be selected for new designs? A: Selection depends on regulatory requirements. For applications requiring ROHS3 compliance, the 40F10KE is the appropriate choice. For legacy or non-regulated applications, either part is suitable based on availability and packaging requirements.

Q: Are there any dimensional differences between these parts? A: No. Both components share identical physical dimensions of 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and maintain the same axial package configuration.

Q: What certifications apply to both parts? A: Both components are classified under ECCN EAR99 and HTSUS 8533.21.0080. The 40F10KE additionally carries ROHS3 compliance certification, while both are REACH Unaffected.