Equivalent & Substitute Parts for Ohmite 825F2K0

Part Overview

The Ohmite 825F2K0 is a 2 kOhms ±1% 25W wirewound chassis mount resistor from the Metal-Mite®89 series, designed for high-power applications requiring precision and thermal stability. This component features an aluminum housing with flanged mounting and solder lug termination, suitable for operating temperatures from -55°C to 275°C.

The 825F2K0 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

825F2K0

OhmiteIn Stock: 1122825F2K0 Datasheet

Current PartRFQ

UAL25-2KF8

RiedonIn Stock: 987UAL25-2KF8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 825F2K0 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2 kOhms
• Tolerance: ±1%
• Power rating: 25W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 275°C
• Housing material: Aluminum
• Mounting configuration: Flanged
• Termination style: Solder lugs
• Package format: Axial, Box

The Riedon UAL25-2KF8 meets all specified electrical and mechanical parameters, establishing it as a direct functional equivalent to the obsolete Ohmite 825F2K0.

Parameter Comparison

Engineering Selection Recommendations

The Riedon UAL25-2KF8 is the qualified substitute for the obsolete Ohmite 825F2K0. Both components are electrically and mechanically equivalent across all specified parameters.

The Riedon UAL25-2KF8 offers the additional advantage of active product status, ensuring continued availability and supply chain support. The component is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and production environments where RoHS compliance is mandated.

Physical dimensions show negligible variation: the UAL25-2KF8 measures 1.063" L × 1.079" W (27.00mm × 27.40mm) with a seated height of 0.575" (14.60mm), compared to the 825F2K0 at 1.062" L × 1.094" W (26.98mm × 27.79mm) with a seated height of 0.556" (14.12mm). These dimensional differences remain within typical mechanical tolerance ranges for chassis-mounted applications.

Frequently Asked Questions (FAQ)

Q: Can the Riedon UAL25-2KF8 directly replace the Ohmite 825F2K0 in existing designs?

A: Yes. The UAL25-2KF8 matches all critical electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating range) and mechanical specifications (housing, mounting, termination) of the 825F2K0. Dimensional variations are minimal and fall within standard mechanical tolerances for flanged chassis-mount applications.

Q: What is the significance of the product status difference?

A: The 825F2K0 is obsolete, indicating discontinued manufacturing and limited availability. The UAL25-2KF8 is active, ensuring reliable supply, technical support, and continued production for both new designs and replacement applications.

Q: Does RoHS compliance affect substitution suitability?

A: The UAL25-2KF8 is ROHS3 compliant, while the 825F2K0 is non-compliant. For applications subject to RoHS regulations or environmental requirements, the UAL25-2KF8 provides regulatory alignment. For legacy systems without RoHS mandates, both components remain functionally equivalent.

Q: Are there dimensional concerns with the UAL25-2KF8 substitution?

A: Dimensional differences are negligible. The UAL25-2KF8 is 0.001" longer and 0.015" narrower in width, with a seated height 0.019" greater. These variations are typical for precision resistor manufacturing and do not affect standard chassis-mount applications.

Q: What packaging is available for the Riedon UAL25-2KF8?

A: The UAL25-2KF8 is supplied in bulk packaging, consistent with standard procurement for high-power wirewound resistors.