Ohmite 825FR70 Equivalent & Substitute Parts

Part Overview

The Ohmite 825FR70 is a 700 mOhms ±1% 25W wirewound chassis mount resistor designed for high-power applications requiring precision resistance values. This component features aluminum housing with flanged mounting and solder lug terminations, suitable for applications operating across a wide temperature range from -55°C to 275°C.

The 825FR70 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

825FR70

OhmiteIn Stock: 1010825FR70 Datasheet

Current PartRFQ

825FR70E

OhmiteIn Stock: 1194825FR70E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 825FR70E qualifies as a direct substitute based on the following critical parameters:

• Electrical Specifications: Identical resistance value (700 mOhms), tolerance (±1%), power rating (25W), and temperature coefficient (±90ppm/°C)
• Composition & Construction: Wirewound design with aluminum housing and flanged mounting
• Termination: Solder lug lead style matching the original design
• Package Classification: Axial, Box configuration

The 825FR70E maintains functional and mechanical compatibility with the original 825FR70, with the primary distinction being product status (Active vs. Obsolete) and RoHS compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The 825FR70E is the direct substitute for the obsolete 825FR70. Both components share identical electrical and mechanical specifications within the Metal-Mite®89 series.

Product Status Consideration: The 825FR70E maintains Active product status with current manufacturing support, ensuring long-term availability and supply chain continuity compared to the obsolete 825FR70.

Compliance Consideration: The 825FR70E carries RoHS Compliant certification, whereas the 825FR70 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 825FR70E is the appropriate selection. For legacy systems without RoHS mandates, both parts remain functionally equivalent.

Packaging: The 825FR70E is supplied in Bulk packaging, while the original 825FR70 packaging specification is not detailed. Confirm packaging requirements for your procurement process.

Frequently Asked Questions (FAQ)

Q: Are the 825FR70 and 825FR70E electrically identical?

A: Yes. Both components provide 700 mOhms ±1% resistance at 25W power rating with ±90ppm/°C temperature coefficient. Electrical performance is equivalent.

Q: What are the physical dimension differences between these parts?

A: Minor dimensional variations exist. The 825FR70 measures 1.062" L × 1.094" W × 0.556" H (seated), while the 825FR70E measures 1.075" L × 1.102" W × 0.583" H (seated). These differences fall within typical manufacturing tolerances for chassis mount resistors and do not affect functional compatibility in standard mounting applications.

Q: Can I use the 825FR70E as a direct replacement in existing designs?

A: Yes, the 825FR70E functions as a direct substitute. Verify that the slightly larger physical dimensions accommodate your PCB layout and mechanical constraints.

Q: What is the significance of RoHS compliance for this substitution?

A: RoHS compliance indicates the 825FR70E meets European Union Restriction of Hazardous Substances regulations. If your application or market requires RoHS certification, the 825FR70E is the appropriate choice. The obsolete 825FR70 does not carry this certification.

Q: Why is the 825FR70 listed as obsolete?

A: Obsolescence typically reflects end-of-life status from the manufacturer. The 825FR70E represents the current production equivalent within the Metal-Mite®89 series, ensuring ongoing availability and support.