GSOT08-HT3-GS08 Equivalent & Substitute Parts

Part Overview

The GSOT08-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 an 8V reverse standoff voltage and 19.2V maximum clamping voltage. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

GSOT08-HT3-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 808GSOT08-HT3-GS08 Datasheet

Current PartRFQ

GSOT08-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 22924GSOT08-E3-08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GSOT08-HT3-GS08 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Critical for Substitution):

• Voltage - Reverse Standoff: 8V
• Voltage - Breakdown (Min): 9V
• Voltage - Clamping (Max) @ Ipp: 19.2V
• Current - Peak Pulse (8/20µs): 18A
• Power - Peak Pulse: 345W
• Capacitance @ 1MHz: 160pF
• Operating Temperature Range: -40°C to 125°C
• Type: Zener, Unidirectional (1 channel)

Mechanical Parameters (Allowable Variation):

• Mounting Type: Surface Mount
• Package / Case: Alternative surface mount packages acceptable if electrical parameters match

The substitute part GSOT08-E3-08 maintains identical electrical specifications while utilizing a different surface mount package (SOT-23-3 versus LLP75-3B). Both parts share the same base product number (GSOT08) and are manufactured by the same supplier.

Parameter Comparison

Engineering Selection Recommendations

The GSOT08-E3-08 is the manufacturer-recommended substitute for the obsolete GSOT08-HT3-GS08. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical performance specifications across all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, power dissipation, and capacitance.

The primary difference between these parts is the package configuration. The GSOT08-HT3-GS08 uses a 3-WDFN (LLP75-3B) package, while the GSOT08-E3-08 uses a SOT-23-3 package. Both are surface mount technologies with equivalent pin configurations for the three-terminal unidirectional TVS diode topology.

The GSOT08-E3-08 is currently in active production status with significantly higher inventory availability (22,901 pieces) compared to the obsolete main part (721 pieces). Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity ratings.

For applications requiring automotive-grade components with AEC-Q101 qualification, the original GSOT08-HT3-GS08 specifications should be cross-referenced with the substitute part's qualification documentation to ensure compliance with specific automotive standards if mandated by the application.

Frequently Asked Questions (FAQ)

Q: Can GSOT08-E3-08 be used as a direct replacement for GSOT08-HT3-GS08?

A: Yes, the GSOT08-E3-08 is electrically equivalent to the GSOT08-HT3-GS08. Both parts have identical electrical specifications including voltage ratings, current handling, and power dissipation. The primary consideration is the package change from 3-WDFN (LLP75-3B) to SOT-23-3, which requires PCB layout modification.

Q: What is the difference between the LLP75-3B and SOT-23-3 packages?

A: Both are surface mount packages for three-terminal devices. The LLP75-3B is a 3-WDFN package, while the SOT-23-3 is a standard TO-236-3 package. The physical footprint, lead spacing, and mounting area differ between these packages. PCB design files must be updated to accommodate the new package geometry.

Q: Why is the GSOT08-HT3-GS08 listed as obsolete?

A: The GSOT08-HT3-GS08 has been discontinued by the manufacturer. The GSOT08-E3-08 is the active production equivalent that provides the same electrical functionality in an alternative package configuration.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts maintain identical electrical specifications: 8V reverse standoff voltage, 9V minimum breakdown voltage, 19.2V maximum clamping voltage, 18A peak pulse current (8/20µs), 345W peak pulse power, and 160pF capacitance at 1MHz. Operating temperature range is identical at -40°C to 125°C.

Q: What compliance certifications apply to the GSOT08-E3-08?

A: The GSOT08-E3-08 is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating. The original GSOT08-HT3-GS08 includes automotive-grade classification and AEC-Q101 qualification; verify whether the substitute part carries equivalent automotive certifications for your specific application requirements.

Q: Is PCB redesign required to use the GSOT08-E3-08?

A: Yes. The package change from 3-WDFN (LLP75-3B) to SOT-23-3 requires PCB footprint modification. The electrical connections remain functionally equivalent (three-terminal unidirectional TVS diode), but the physical layout must be updated to match the new package dimensions and lead positions.