HS25 1K F Wirewound Chassis Mount Resistor - Equivalent & Substitute Parts

Part Overview

The HS25 1K F is a 25-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 1 kOhms with ±1% tolerance. This component is designed for high-power applications requiring stable resistance values and pulse withstanding capability. The part is currently in active production status with 874 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

HS25 1K F

OhmiteIn Stock: 910HS25 1K F Datasheet

Current PartRFQ

825F1K0E

OhmiteIn Stock: 758825F1K0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 825F1K0E qualifies as a direct substitute for the HS25 1K F based on the following critical parameters:

• Resistance Value: Both parts are rated at 1 kOhms
• Tolerance: Both maintain ±1% tolerance
• Power Rating: Both are 25W components
• Composition: Both are wirewound resistors
• Housing Material: Both use aluminum construction
• Mounting Configuration: Both feature flanged chassis mount design with solder lugs
• Electrical Compliance: Both are RoHS compliant

The 825F1K0E is manufactured by Ohmite under the Metal-Mite®89 series and maintains functional and mechanical equivalence to the HS25 1K F across all critical electrical and physical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the HS25 1K F and 825F1K0E are active production components from Ohmite with full RoHS compliance. The 825F1K0E provides an additional specification advantage with a defined operating temperature range of -55°C to 275°C, whereas the HS25 1K F does not specify an operating temperature range in the provided data. The 825F1K0E maintains a slightly tighter temperature coefficient at ±20ppm/°C compared to the HS25 1K F at 25ppm/°C, which may be beneficial in temperature-sensitive applications. Physical dimensions are comparable with minor variations within acceptable tolerances for chassis mount applications. Selection between these parts should be based on specific application requirements regarding temperature stability and operating environment specifications.

Frequently Asked Questions (FAQ)

Q: Can the 825F1K0E directly replace the HS25 1K F in existing designs?

A: Yes. Both parts share identical electrical specifications (1 kOhms, ±1%, 25W wirewound) and mechanical mounting configurations (flanged aluminum chassis mount with solder lugs). Physical dimensions are within acceptable tolerances for standard chassis mount applications.

Q: What are the key differences between these two parts?

A: The primary differences are the series designation (HS versus Metal-Mite®89), temperature coefficient specification (25ppm/°C versus ±20ppm/°C), and defined operating temperature range for the 825F1K0E (-55°C to 275°C). Physical dimensions vary slightly but remain compatible with standard mounting footprints.

Q: Are both parts RoHS compliant?

A: Yes. The HS25 1K F is RoHS Compliant, and the 825F1K0E is ROHS3 Compliant. Both meet current environmental compliance requirements.

Q: What packaging formats are available?

A: The HS25 1K F is supplied in box packaging, while the 825F1K0E is supplied in tray packaging. Both use identical axial lead configurations with solder lugs for chassis mount applications.

Q: Which part should be selected for temperature-critical applications?

A: The 825F1K0E provides a specified operating temperature range (-55°C to 275°C) and a tighter temperature coefficient (±20ppm/°C), making it the preferred choice for applications with defined temperature operating requirements.