85F15K Equivalent & Substitute Parts Reference

Part Overview

The Ohmite 85F15K is a 15 kOhms ±1% 5W through-hole resistor with axial wirewound construction, part of the Acrasil® 80 series. This component is actively manufactured and maintained in inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging or compliance requirements necessitate component substitution.

Substiute Parts

85F15K

OhmiteIn Stock: 82885F15K Datasheet

Current PartRFQ

45F15KE

OhmiteIn Stock: 90645F15KE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 85F15K is determined by strict equivalence across the following electrical and mechanical parameters:

• Resistance value: 15 kOhms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Number of terminations: 2

The substitute part 45F15KE meets all these criteria and is therefore classified as a parametric equivalent. Differences in series designation, packaging format, RoHS compliance status, and operating temperature range do not affect functional interchangeability in applications where the core electrical and mechanical specifications are the controlling factors.

Parameter Comparison

Engineering Selection Recommendations

Both the 85F15K and 45F15KE are active products from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

85F15K (Acrasil® 80 Series): Use when the specific series designation is required by design specification or when RoHS non-compliant components are acceptable for the application.

45F15KE (Series 40): Use when RoHS compliance is a procurement requirement. This part provides an expanded operating temperature range of -55°C to 275°C, which may offer additional design margin in temperature-sensitive applications. The bulk packaging format is suitable for high-volume production environments.

Both parts are suitable for direct substitution in applications where the core electrical parameters (15 kOhms, ±1%, 5W, wirewound, axial configuration) are the controlling design criteria.

Frequently Asked Questions (FAQ)

Q: Can the 45F15KE be used as a direct replacement for the 85F15K?

A: Yes. Both parts are parametric equivalents with identical resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. They are functionally interchangeable in circuit applications.

Q: What is the difference between the Acrasil® 80 and Series 40 designations?

A: These designations identify different product series within Ohmite's wirewound resistor portfolio. Both series meet the specified electrical and mechanical parameters for this 15 kOhm, 5W axial resistor. Series selection does not affect functional performance when electrical specifications are identical.

Q: Does RoHS compliance affect component performance?

A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. The 45F15KE is RoHS compliant, while the 85F15K is not. Selection should be based on regulatory and procurement requirements for the end application.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 85F15K and 45F15KE have identical dimensions of 0.343" diameter by 0.937" length (8.70mm x 23.80mm), ensuring mechanical compatibility in PCB layouts and enclosures.

Q: What is the operating temperature range for each part?

A: The 85F15K operating temperature range is not specified in available documentation. The 45F15KE operates from -55°C to 275°C. Both parts maintain the specified ±20ppm/°C temperature coefficient within their respective operating ranges.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the design does not have explicit requirements for a specific series designation or RoHS compliance status. The electrical and mechanical equivalence ensures functional interchangeability.