Ohmite 810F4K0 Equivalent & Substitute Parts

Part Overview

The Ohmite 810F4K0 is a 4 kOhms ±1% 10W wirewound chassis mount resistor designed for high-power applications requiring precision and thermal stability. This component features aluminum housing with flanged mounting and solder lug termination, suitable for applications operating across -55°C to 275°C.

The 810F4K0 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and new designs requiring identical electrical and mechanical specifications.

Substiute Parts

810F4K0

OhmiteIn Stock: 753810F4K0 Datasheet

Current PartRFQ

810F4K0E

OhmiteIn Stock: 941810F4K0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 810F4K0 are identified based on electrical and mechanical parameter equivalence within the Metal-Mite®89 series. Substitution criteria include:

• Identical resistance value: 4 kOhms
• Matching tolerance: ±1%
• Equal power rating: 10W
• Same composition: Wirewound
• Identical temperature coefficient: ±20ppm/°C
• Matching operating temperature range: -55°C to 275°C
• Equivalent housing and mounting: Aluminum with flanges
• Compatible lead style: Solder Lugs
• Matching package configuration: Axial, Box

The primary substitute, 810F4K0E, meets all electrical and mechanical requirements while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 810F4K0E serves as the direct substitute for the obsolete 810F4K0. Both components are electrically and mechanically identical across all critical parameters. The 810F4K0E offers the advantage of active product status, ensuring continued availability and supply chain support.

The 810F4K0E carries ROHS3 compliance certification, whereas the 810F4K0 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 810F4K0E is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification.

Packaging differs between the two parts: the 810F4K0 uses standard packaging while the 810F4K0E is supplied in Tray packaging. This distinction affects handling and storage procedures but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Are the 810F4K0 and 810F4K0E electrically identical?

A: Yes. Both components share identical resistance (4 kOhms), tolerance (±1%), power rating (10W), temperature coefficient (±20ppm/°C), and operating temperature range (-55°C to 275°C).

Q: What is the primary difference between these parts?

A: The 810F4K0E is the active production equivalent with ROHS3 compliance certification. The 810F4K0 is obsolete and RoHS non-compliant. Packaging also differs: standard for 810F4K0 and Tray for 810F4K0E.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.750" L x 0.812" W (19.05mm x 20.63mm) with a maximum seated height of 0.400" (10.16mm). They are mechanically interchangeable.

Q: Can I use the 810F4K0E as a direct replacement in existing designs?

A: Yes. The 810F4K0E is a direct substitute with identical electrical and mechanical specifications. No circuit modifications are required.

Q: Does RoHS compliance affect performance?

A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical performance characteristics.

Q: What packaging considerations apply?

A: The 810F4K0E is supplied in Tray packaging. Verify that your assembly process accommodates tray-packaged components. Standard packaging for the 810F4K0 may differ in handling requirements.