LPSA800H1R00KB Equivalent & Substitute Parts

Part Overview

The LPSA800H1R00KB is a thick film chassis mount resistor manufactured by Vishay Sfernice, rated for 800W power dissipation with 1 Ohm resistance and ±10% tolerance. This component is designed for high-power applications requiring robust thermal management and automotive-grade reliability. The part maintains Active product status and is suitable for applications demanding non-inductive performance characteristics with screw hole mounting configuration.

Substitute parts are identified to provide alternative options when the primary part is unavailable or when design specifications permit tolerance variations while maintaining electrical and mechanical compatibility.

Substiute Parts

LPSA800H1R00KB

Vishay SferniceIn Stock: 918LPSA800H1R00KB Datasheet

Current PartRFQ

LPSA800H1R00JB

Vishay SferniceIn Stock: 1315LPSA800H1R00JB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LPSA800H1R00KB are identified based on strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1 Ohms
• Power rating: 800W
• Composition: Thick Film
• Temperature coefficient: ±500ppm/°C
• Operating temperature range: -55°C ~ 175°C
• Mounting feature: Screw Holes
• Lead style: M4 Threaded
• Physical dimensions: 60.00mm L x 57.00mm W x 26.80mm H
• Automotive compliance: AEC-Q200
• Non-inductive characteristic

Allowable Variation Parameter:

• Tolerance: ±5% (tighter than ±10% primary specification)

The LPSA800H1R00JB qualifies as a substitute because it maintains all mandatory parameters while offering improved tolerance specification. Tighter tolerance does not compromise compatibility; it represents an enhancement suitable for applications where the primary part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (LPSA800H1R00KB): Select the LPSA800H1R00KB when design specifications explicitly require ±10% tolerance. This part maintains Active product status and full AEC-Q200 automotive compliance. Current inventory availability is 907 pieces.

Substitute Part Selection (LPSA800H1R00JB): The LPSA800H1R00JB serves as a direct substitute when the primary part is unavailable. This part offers identical electrical and mechanical characteristics with the exception of improved ±5% tolerance specification. The tighter tolerance provides enhanced precision without introducing incompatibility. This part maintains Active product status, full AEC-Q200 automotive compliance, and RoHS3 compliance. Current inventory availability is 1252 pieces.

Both parts are suitable for direct substitution in applications where the primary part cannot be sourced. The substitute part's tighter tolerance represents a performance enhancement rather than a compromise.

Frequently Asked Questions (FAQ)

Q: Can LPSA800H1R00JB replace LPSA800H1R00KB in existing designs?

A: Yes. The LPSA800H1R00JB is electrically and mechanically compatible with LPSA800H1R00KB. All critical parameters including resistance, power rating, temperature coefficient, operating temperature range, mounting configuration, and physical dimensions are identical. The substitute part features ±5% tolerance compared to the primary part's ±10% tolerance, which represents improved precision and does not create compatibility issues.

Q: What is the primary difference between these two parts?

A: The primary difference is tolerance specification. LPSA800H1R00KB carries ±10% tolerance, while LPSA800H1R00JB carries ±5% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts automotive-grade?

A: Yes. Both LPSA800H1R00KB and LPSA800H1R00JB maintain AEC-Q200 automotive compliance and are suitable for automotive applications.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts measure 60.00mm length x 57.00mm width x 26.80mm height (seated maximum). Both feature M4 threaded leads and screw hole mounting configuration.

Q: What is the temperature operating range for both parts?

A: Both parts operate across the identical temperature range of -55°C to 175°C with a temperature coefficient of ±500ppm/°C.

Q: Are both parts non-inductive?

A: Yes. Both LPSA800H1R00KB and LPSA800H1R00JB are specified as non-inductive thick film resistors.

Q: What packaging format is used for both parts?

A: Both parts are supplied in Box packaging configuration.

Q: Can I use the substitute part if my design specifies ±10% tolerance?

A: Yes. The substitute part's ±5% tolerance is tighter than the ±10% specification, meaning it meets or exceeds the design requirement. Tighter tolerance does not create incompatibility.