Equivalent & Substitute Parts for Ohmite 810F3K5

Part Overview

The Ohmite 810F3K5 is a 4.6 kOhms ±1% 10W wirewound chassis mount resistor designed for applications requiring precision resistance with high power dissipation capability. This component features aluminum housing with flanged mounting and solder lug termination, suitable for fixed installation in electronic equipment.

The 810F3K5 carries an obsolete product status, making identification of compatible alternatives essential for ongoing system support, maintenance, and new production runs where legacy component specifications must be maintained.

Substiute Parts

810F3K5

OhmiteIn Stock: 1101810F3K5 Datasheet

Current PartRFQ

810F3K5E

OhmiteIn Stock: 743810F3K5E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 810F3K5 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically for a component to serve as a direct substitute:

• Resistance value: 4.6 kOhms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 275°C
• Housing material: Aluminum
• Mounting configuration: Flanged
• Physical dimensions: 0.750" L × 0.812" W with 0.400" maximum seated height
• Termination style: Solder lugs
• Package configuration: Axial, Box

The 810F3K5E meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 810F3K5E is the direct functional equivalent of the obsolete 810F3K5. Both components are manufactured by Ohmite within the Metal-Mite®89 series and share identical electrical specifications and mechanical dimensions.

The primary distinction between these parts is product lifecycle status and regulatory compliance. The 810F3K5E carries active product status with ROHS3 compliance, whereas the 810F3K5 is obsolete and RoHS non-compliant. For new designs and ongoing production requiring compliance with current environmental regulations, the 810F3K5E is the appropriate selection. The 810F3K5E is supplied in tray packaging, which differs from the standard packaging of the original part.

Both components operate across the full temperature range of -55°C to 275°C and maintain identical tolerance and temperature coefficient specifications, ensuring functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 810F3K5E be used as a direct replacement for the 810F3K5?

A: Yes. The 810F3K5E is electrically and mechanically identical to the 810F3K5. All critical parameters including resistance value, tolerance, power rating, temperature range, and physical dimensions are equivalent. The primary difference is product status and regulatory compliance.

Q: What is the significance of the RoHS compliance difference?

A: The 810F3K5E is ROHS3 compliant, while the 810F3K5 is RoHS non-compliant. For applications subject to environmental regulations or customer requirements mandating RoHS compliance, the 810F3K5E must be selected.

Q: Does the tray packaging of the 810F3K5E affect compatibility?

A: Packaging format does not affect electrical or mechanical compatibility. The tray packaging of the 810F3K5E is a logistics consideration only and does not impact circuit performance or installation.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both components maintain identical temperature coefficients (±20ppm/°C), operating temperature ranges (-55°C to 275°C), and power dissipation ratings (10W). Performance in thermal and electrical applications is equivalent.

Q: Why is the 810F3K5 listed as obsolete?

A: The 810F3K5 has reached end-of-life status. The 810F3K5E represents the current production equivalent within the Metal-Mite®89 series and is the recommended selection for all new applications and ongoing support.