85F10K Equivalent & Substitute Parts Reference

Part Overview

The Ohmite 85F10K is a 5W wirewound axial resistor with 10 kOhms resistance and ±1% tolerance, part of the Acrasil® 80 series. This component is designed for through-hole applications requiring precision resistance in power dissipation environments. The part maintains active product status with 911 units in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same resistance value, power rating, tolerance, and package configuration.

Substiute Parts

85F10K

OhmiteIn Stock: 95385F10K Datasheet

Current PartRFQ

45F10KE

OhmiteIn Stock: 132245F10KE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 85F10K is determined by strict equivalence across the following parameters:

• Resistance value: 10 kOhms
• Tolerance: ±1%
• Power dissipation: 5W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L

The 45F10KE meets all electrical and mechanical substitution criteria. Both parts are manufactured by Ohmite and share identical resistance, tolerance, power rating, composition, and package specifications. Physical dimensions are equivalent, enabling direct mechanical compatibility in circuit board layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the 85F10K and 45F10KE are active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on regulatory compliance requirements and supply chain considerations.

The 45F10KE offers ROHS3 compliance and REACH unaffected status, making it suitable for applications subject to environmental regulations. The 85F10K is RoHS non-compliant and should be selected only when regulatory exemptions apply or legacy system requirements mandate its use.

Inventory availability differs between the two parts, with the 45F10KE currently stocked at higher quantities (1222 units versus 911 units). Both parts are supplied in different packaging formats: the 85F10K in box packaging and the 45F10KE in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can the 45F10KE directly replace the 85F10K in existing designs?

A: Yes. Both resistors share identical electrical specifications (10 kOhms, ±1%, 5W, ±20ppm/°C) and physical dimensions (0.343" Dia x 0.937" L). Direct mechanical and electrical substitution is supported without circuit modification.

Q: What is the primary difference between these two parts?

A: The primary differences are regulatory compliance status and packaging format. The 45F10KE is ROHS3 compliant with REACH unaffected designation, while the 85F10K is RoHS non-compliant. The 85F10K is supplied in box packaging; the 45F10KE in bulk packaging.

Q: Are there any performance differences between the Acrasil® 80 and Ohmicone® 40 series?

A: No performance differences exist for the specified parameters. Both series are wirewound axial resistors with identical resistance, tolerance, power rating, temperature coefficient, and physical dimensions.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS3 compliance, the 45F10KE is the appropriate choice. For legacy systems or applications with specific exemptions, the 85F10K remains available.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both the 85F10K and 45F10KE have identical dimensions of 0.343" Dia x 0.937" L (8.70mm x 23.80mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.