GSOT12-HT3-GS08 Equivalent & Substitute Parts

Part Overview

The GSOT12-HT3-GS08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications with a 12V reverse standoff voltage and 26V maximum clamping voltage. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and maintenance applications.

Substiute Parts

GSOT12-HT3-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1209GSOT12-HT3-GS08 Datasheet

Current PartRFQ

GSOT12-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 108820GSOT12-E3-08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GSOT12-HT3-GS08 is determined by strict equivalence of electrical and mechanical parameters. The primary substitute, GSOT12-E3-08, maintains identical electrical specifications across all critical parameters: 12V reverse standoff voltage, 13.5V minimum breakdown voltage, 26V maximum clamping voltage, 12A peak pulse current (8/20µs), and 312W peak pulse power. Both parts share the same base product number (GSOT12), confirming functional equivalence.

The key substitution criteria are:

• Voltage ratings: Reverse standoff, breakdown, and clamping voltages must match exactly
• Current handling: Peak pulse current specification must be identical
• Power dissipation: Peak pulse power rating must be equivalent
• Capacitance characteristics: Must maintain 115pF @ 1MHz
• Temperature range: Operating temperature must span -40°C to 125°C
• Compliance: RoHS3 and REACH status must be maintained

The primary difference between the main part and its substitute is the package format: the GSOT12-HT3-GS08 uses a 3-WDFN (LLP75-3B) package, while the GSOT12-E3-08 uses a SOT-23-3 package. Both are surface mount configurations suitable for automated assembly.

Parameter Comparison

Engineering Selection Recommendations

The GSOT12-E3-08 is the manufacturer-recommended substitute for the obsolete GSOT12-HT3-GS08. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical performance specifications. The substitute part is currently in active production status with substantial inventory availability (108,735 pieces), ensuring supply chain continuity.

Both parts maintain equivalent compliance certifications: ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels. The primary design consideration is the package transition from 3-WDFN (LLP75-3B) to SOT-23-3 format. This package change requires PCB layout modification but does not affect electrical performance or thermal characteristics within the specified operating temperature range of -40°C to 125°C.

Selection of the GSOT12-E3-08 is appropriate for applications requiring identical voltage suppression performance with the understanding that board-level design changes are necessary to accommodate the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the GSOT12-E3-08 directly replace the GSOT12-HT3-GS08 without design changes?

A: The GSOT12-E3-08 provides identical electrical performance but requires PCB layout modification due to package format differences. The GSOT12-HT3-GS08 uses a 3-WDFN (LLP75-3B) package, while the substitute uses SOT-23-3 format. Electrical functionality is equivalent; physical placement and routing must be redesigned.

Q: Are there differences in thermal performance between the two packages?

A: Both parts operate within the same temperature range (-40°C to 125°C junction temperature) and dissipate identical peak pulse power (312W). Package thermal characteristics differ, but both are suitable for surface mount assembly with appropriate thermal management design.

Q: What is the inventory status of the substitute part?

A: The GSOT12-E3-08 has 108,735 pieces in stock as new original inventory, providing reliable supply availability. The original GSOT12-HT3-GS08 is obsolete with limited remaining inventory (1,168 pieces).

Q: Are both parts RoHS compliant?

A: Yes, both the GSOT12-HT3-GS08 and GSOT12-E3-08 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What are the key electrical parameters that must match for substitution?

A: Critical parameters for TVS diode substitution include reverse standoff voltage (12V), breakdown voltage (13.5V minimum), clamping voltage (26V maximum), peak pulse current (12A at 8/20µs), and peak pulse power (312W). The GSOT12-E3-08 matches all these specifications exactly.