Equivalent & Substitute Parts for 825F15R

Part Overview

The Ohmite 825F15R is a 15 Ohms ±1% 25W wirewound chassis mount resistor from the Metal-Mite®89 series. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing design support and production continuity. The part features aluminum housing with flanged mounting and solder lug termination, designed for applications requiring precision resistance with moderate power dissipation in the 25W range.

Substiute Parts

825F15R

OhmiteIn Stock: 832825F15R Datasheet

Current PartRFQ

850F15RE

OhmiteIn Stock: 809850F15RE Datasheet

MFR RecommendedRFQ

RH02515R00FC02

Vishay DaleIn Stock: 1163RH02515R00FC02 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 825F15R is determined by the following core parameters:

• Electrical Match: Resistance value (15 Ohms) and tolerance (±1%) must be identical
• Power Capability: Substitute must meet or exceed the 25W power rating
• Thermal Characteristics: Temperature coefficient (±20ppm/°C) and operating range compatibility
• Mechanical Compatibility: Aluminum housing, flanged mounting, and solder lug termination
• Package Configuration: Axial, box-style package with compatible dimensions for board-level integration

Two substitute parts meet these criteria:

1. 850F15RE (Ohmite, MFR Recommended): Identical electrical specifications with doubled power rating (50W), same series, active product status
2. RH02515R00FC02 (Vishay Dale, Direct Manufacturer): Matching electrical and mechanical specifications, active product status, moisture-resistant coating

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: The 850F15RE is the appropriate selection, as it is the only substitute certified to ROHS3 standards. This part is manufacturer-recommended and maintains identical electrical specifications while providing increased power headroom at 50W. The larger physical footprint (1.938" L x 1.156" W) must be accommodated in the PCB layout.

For Direct Dimensional and Electrical Equivalence: The RH02515R00FC02 from Vishay Dale provides the closest mechanical match to the original 825F15R, with nearly identical length and width dimensions. This part maintains the 25W power rating and includes moisture-resistant coating. The operating temperature maximum is reduced to 250°C compared to the original 275°C specification. This part is active and available in production quantities.

For Continued Ohmite Series Compatibility: The 850F15RE maintains the Metal-Mite®89 series designation and Ohmite manufacturer continuity, supporting long-term supply chain stability within the same product family.

Frequently Asked Questions (FAQ)

Q: Can the 850F15RE be used as a direct drop-in replacement for the 825F15R?

A: Electrically, yes. The 850F15RE matches all critical electrical parameters (15 Ohms, ±1%, ±20ppm/°C). However, the physical dimensions differ significantly: the 850F15RE is 1.938" in length versus 1.062" for the original part. PCB layout verification is required to confirm the larger footprint can be accommodated.

Q: What is the primary difference between the two substitute options?

A: The 850F15RE offers doubled power capacity (50W vs. 25W) and RoHS3 compliance, making it suitable for applications with higher power dissipation or regulatory requirements. The RH02515R00FC02 provides closer dimensional equivalence and is available from an alternative manufacturer, offering supply chain diversification.

Q: Does the RH02515R00FC02 operate across the full temperature range of the original part?

A: The RH02515R00FC02 operates from -55°C to 250°C, compared to the original 825F15R range of -55°C to 275°C. Applications requiring operation above 250°C must use the 850F15RE or 825F15R.

Q: Are both substitutes available in production quantities?

A: Yes. The 850F15RE has 750 pieces in stock, and the RH02515R00FC02 has 1,096 pieces in stock, both classified as new original inventory.

Q: What compliance certifications apply to each substitute?

A: The 850F15RE is ROHS3 compliant. The RH02515R00FC02 is RoHS non-compliant but REACH affected. Selection depends on regulatory requirements for the end application.