TVS324 Equivalent & Substitute Parts

Part Overview

The TVS324 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component features a 24V reverse standoff voltage with 42V clamping capability and is classified as an active product. Alternative models may be required due to inventory availability, packaging preferences, or specific application requirements such as higher peak pulse current handling or improved compliance certifications.

Substiute Parts

TVS324

Microchip TechnologyIn Stock: 1053TVS324 Datasheet

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LDP24A

STMicroelectronicsIn Stock: 2774LDP24A Datasheet

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LDP24ARL

STMicroelectronicsIn Stock: 1675LDP24ARL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the TVS324 is determined by the following critical electrical and mechanical parameters:

Electrical Requirements:

• Voltage - Reverse Standoff: 24V (nominal)
• Voltage - Clamping (Max): 40V or lower (to match or improve clamping performance)
• Mounting Type: Through Hole (axial configuration)
• Unidirectional operation: Single channel

Compatibility Criteria: The substitute parts LDP24A and LDP24ARL maintain identical reverse standoff voltage (24V) and package configuration (axial through-hole). Both substitute parts provide reduced clamping voltage (40V versus 42V) and significantly higher peak pulse current handling (30A versus 3.6A). These characteristics enable direct functional substitution with enhanced transient protection capability.

Parameter Comparison

Engineering Selection Recommendations

TVS324 (Microchip Technology): Suitable for applications where RoHS non-compliance is acceptable and the specified 3.6A peak pulse rating meets circuit requirements. Product is active and available.

LDP24A / LDP24ARL (STMicroelectronics): Both parts offer ROHS3 compliance and are recommended for designs requiring RoHS certification. The higher peak pulse current rating (30A) provides enhanced transient protection margin. LDP24ARL is the reel-packaged variant of LDP24A; selection depends on packaging requirements (cut tape versus reel). Both maintain identical electrical characteristics and active product status.

The substitute parts are electrically and mechanically compatible with the TVS324 across all critical parameters. The improved clamping voltage (40V vs 42V) and superior current handling (30A vs 3.6A) establish these as functionally superior alternatives.

Frequently Asked Questions (FAQ)

Q: Can LDP24A and LDP24ARL be used interchangeably with TVS324? A: Both STMicroelectronics parts are direct electrical and mechanical equivalents to the TVS324. The primary differences are packaging format (cut tape versus reel) and RoHS compliance status. Circuit-level performance is functionally identical.

Q: What is the difference between LDP24A and LDP24ARL? A: LDP24A and LDP24ARL are electrically identical; the difference is in packaging. LDP24A is supplied in cut tape format, while LDP24ARL is supplied on reel. Base part number designation (LDP24) confirms identical electrical specifications.

Q: Does the 40V clamping voltage on substitute parts versus 42V affect compatibility? A: The 40V clamping on LDP24A and LDP24ARL is tighter (more protective) than the TVS324's 42V specification. This represents improved overvoltage suppression and is compatible with all circuit requirements met by the original 42V specification.

Q: Are there any thermal performance differences? A: Operating temperature range is not provided for the LDP24A/LDP24ARL; comparison is limited to the TVS324's -65°C ~ 175°C range. Both parts are rated for MSL 1 (unlimited moisture sensitivity), ensuring equivalent reliability in standard storage conditions.

Q: Why might I choose the Microchip TVS324 over the STMicroelectronics alternatives? A: If RoHS non-compliance is not a constraint and the 3.6A peak pulse rating is sufficient for the application, TVS324 selection is valid. However, the STMicroelectronics alternatives provide higher current handling and RoHS3 compliance as additional technical advantages.