LPSA300H47R0KB Equivalent & Substitute Parts

Part Overview

The LPSA300H47R0KB is a 47 Ohms ±10% 300W thick film chassis mount resistor manufactured by Vishay Sfernice. This component is designed for high-power applications requiring robust thermal dissipation and mechanical stability through screw hole mounting. The part maintains Active product status and is qualified to automotive AEC-Q200 standards, making it suitable for demanding industrial and automotive environments. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when design specifications permit tolerance or feature variations.

Substiute Parts

LPSA300H47R0KB

Vishay SferniceIn Stock: 1094LPSA300H47R0KB Datasheet

Current PartRFQ

LPSA300H47R0JB

Vishay SferniceIn Stock: 745LPSA300H47R0JB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPSA300H47R0KB is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 47 Ohms
• Power rating: 300W
• Composition: Thick Film
• Temperature coefficient: ±150ppm/°C
• Operating temperature range: -55°C to 120°C
• Mounting feature: Screw Holes
• Lead style: M4 Threaded
• Physical dimensions: 60.00mm L × 57.00mm W × 26.80mm H (Max)
• Automotive AEC-Q200 qualification
• Non-inductive construction

Allowable Variation Parameters:

• Tolerance: The main part specifies ±10%; substitute parts with tighter tolerance (±5%) are functionally compatible and represent an upgrade in precision capability

The LPSA300H47R0JB qualifies as a direct substitute because it maintains all mandatory parameters while offering improved tolerance specification.

Parameter Comparison

Engineering Selection Recommendations

Both the LPSA300H47R0KB and LPSA300H47R0JB are Active products from Vishay Sfernice and maintain full automotive AEC-Q200 qualification. The primary distinction between these parts is tolerance specification: the main part offers ±10% tolerance, while the substitute provides ±5% tolerance.

Selection between these parts depends on circuit tolerance requirements. Applications requiring tighter resistance value control benefit from the LPSA300H47R0JB. Applications where ±10% tolerance satisfies design specifications can utilize either part interchangeably. Both parts are suitable for high-power dissipation applications requiring non-inductive thick film construction with screw hole mounting.

The LPSA300H47R0JB carries explicit ROHS3 compliance documentation, which may be relevant for applications subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can LPSA300H47R0JB replace LPSA300H47R0KB in existing designs?

A: Yes. The LPSA300H47R0JB maintains identical resistance value, power rating, physical dimensions, mounting configuration, and thermal characteristics. The tighter ±5% tolerance of the substitute part is compatible with applications designed for ±10% tolerance.

Q: What is the primary difference between these two part numbers?

A: The tolerance specification differs. LPSA300H47R0KB specifies ±10% tolerance, while LPSA300H47R0JB specifies ±5% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the LPSA300H47R0KB and LPSA300H47R0JB carry AEC-Q200 automotive qualification and operate across the identical temperature range of -55°C to 120°C.

Q: Do these parts require different mounting hardware?

A: No. Both parts feature M4 threaded leads and screw hole mounting, requiring identical mechanical installation procedures.

Q: Is the LPSA300H47R0JB RoHS compliant?

A: The LPSA300H47R0JB is explicitly documented as ROHS3 compliant. RoHS status for the LPSA300H47R0KB is not specified in available documentation.

Q: Can these parts be used interchangeably in high-precision circuits?

A: Applications requiring resistance values within ±5% tolerance should specify LPSA300H47R0JB. Applications tolerating ±10% variation can use either part.

Q: What is the physical footprint compatibility between these parts?

A: Both parts share identical dimensions: 60.00mm length, 57.00mm width, and 26.80mm maximum seated height. Mechanical compatibility is complete.