Equivalent & Substitute Parts for Ohmite 40F12KE

Part Overview

The Ohmite 40F12KE is a 12 kOhms ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling direct replacement in applications where the primary part number becomes unavailable or inventory constraints require alternative sourcing.

Substiute Parts

40F12KE

OhmiteIn Stock: 114640F12KE Datasheet

Current PartRFQ

40F12K

OhmiteIn Stock: 97340F12K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40F12KE are identified based on strict parametric equivalence. The following criteria determine substitution eligibility:

• Resistance value: 12 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 10W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Physical dimensions: 0.406" Dia x 1.902" L (exact match required)
• Termination count: 2 (exact match required)

The Ohmite 40F12K meets all parametric requirements for direct substitution with the 40F12KE.

Parameter Comparison

Engineering Selection Recommendations

The 40F12K provides parametric equivalence to the 40F12KE across all electrical and mechanical specifications. Both parts are Active status products from the same Ohmicone® 40 series with identical resistance, tolerance, power rating, composition, package type, and physical dimensions.

The primary distinction between these parts is RoHS compliance status. The 40F12KE is ROHS3 compliant, while the 40F12K is RoHS non-compliant. Selection between these parts must account for application requirements and regulatory constraints. Applications subject to RoHS directives require the 40F12KE. Applications without RoHS requirements may utilize the 40F12K as a direct functional substitute.

Frequently Asked Questions (FAQ)

Q: Can the 40F12K replace the 40F12KE in all applications?

A: The 40F12K is electrically and mechanically equivalent to the 40F12KE. However, the 40F12K is RoHS non-compliant while the 40F12KE is ROHS3 compliant. Substitution is permissible only in applications where RoHS compliance is not a regulatory requirement.

Q: Are the physical dimensions identical between 40F12KE and 40F12K?

A: Yes. Both parts share identical dimensions of 0.406" diameter by 1.902" length (10.30mm x 48.30mm), ensuring mechanical compatibility in PCB layouts and through-hole mounting applications.

Q: What are the key parametric criteria for substitution?

A: Substitution eligibility is determined by matching resistance (12 kOhms), tolerance (±1%), power rating (10W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), physical dimensions, and termination count (2). All parameters must match exactly.

Q: Do both parts belong to the same product series?

A: Yes. Both the 40F12KE and 40F12K are members of the Ohmite Ohmicone® 40 series and share identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications.