GSOT24-HT3-GS08 Equivalent & Substitute Parts

Part Overview

The GSOT24-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 24V reverse standoff voltage and 47V clamping voltage, providing transient protection at 5A peak pulse current. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	24V
Voltage - Breakdown (Min)	27V
Voltage - Clamping (Max) @ Ipp	47V
Current - Peak Pulse (8/20µs)	5A
Power - Peak Pulse	235W
Capacitance @ 1MHz	65pF
Operating Temperature Range	-40°C to 125°C (TJ)
Product Status	Obsolete
Grade	Automotive
Qualification	AEC-Q101
Mounting Type	Surface Mount
Package / Case	3-WDFN (LLP75-3B)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the GSOT24-HT3-GS08 is determined by the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

Voltage - Reverse Standoff: 24V nominal
Voltage - Breakdown (Min): 27V
Voltage - Clamping (Max) @ Ipp: 47V
Current - Peak Pulse (8/20µs): 5A
Power - Peak Pulse: 235W
Capacitance @ 1MHz: 65pF
Operating Temperature Range: -40°C to 125°C
Unidirectional configuration (1 channel)
Zener type TVS diode

Mechanical Compatibility Criteria:

Surface mount technology
3-pin configuration
RoHS3 compliance
MSL 1 rating

The GSOT24-E3-08 meets all specified electrical parameters and maintains functional equivalence while offering active product status and improved availability.

Parameter Comparison

Parameter	GSOT24-HT3-GS08	GSOT24-E3-08	Match
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	✓
Category	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)	✓
Type	Zener	Zener	✓
Unidirectional Channels	1	1	✓
Voltage - Reverse Standoff (Typ)	24V (Min)	24V (Max)	✓
Voltage - Breakdown (Min)	27V	27V	✓
Voltage - Clamping (Max) @ Ipp	47V	47V	✓
Current - Peak Pulse (8/20µs)	5A	5A	✓
Power - Peak Pulse	235W	235W	✓
Capacitance @ 1MHz	65pF	65pF	✓
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
MSL Rating	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Obsolete	Active	Substitute is active
Package / Case	3-WDFN (LLP75-3B)	TO-236-3, SC-59, SOT-23-3	Different footprint

Engineering Selection Recommendations

The GSOT24-E3-08 is the manufacturer-recommended substitute for the obsolete GSOT24-HT3-GS08. Selection is based on the following factors:

Product Status: The GSOT24-E3-08 maintains active product status with Vishay General Semiconductor, ensuring long-term availability and supply chain continuity compared to the obsolete GSOT24-HT3-GS08.

Electrical Equivalence: All critical electrical parameters are identical between the two parts, including voltage ratings, current handling, power dissipation, and capacitance characteristics. Both devices operate across the same temperature range and maintain identical protection characteristics.

Compliance & Certification: Both parts are ROHS3 compliant with MSL 1 ratings. The GSOT24-E3-08 maintains the same regulatory and environmental compliance profile as the original part.

Packaging Consideration: The primary difference is the package footprint. The GSOT24-HT3-GS08 uses a 3-WDFN (LLP75-3B) package, while the GSOT24-E3-08 uses SOT-23-3 (TO-236-3, SC-59). PCB layout modifications are required to accommodate the different footprint.

Inventory Availability: The GSOT24-E3-08 has significantly higher inventory availability (22,905 pcs) compared to the obsolete GSOT24-HT3-GS08 (698 pcs), supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Are the GSOT24-HT3-GS08 and GSOT24-E3-08 electrically identical?

A: Yes. Both parts are unidirectional Zener TVS diodes with identical voltage ratings (24V reverse standoff, 27V breakdown minimum, 47V clamping maximum), current handling (5A peak pulse), power dissipation (235W), and operating temperature range (-40°C to 125°C). They provide equivalent transient protection performance.

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

A: The primary difference is the package footprint. The GSOT24-HT3-GS08 uses a 3-WDFN (LLP75-3B) package, while the GSOT24-E3-08 uses SOT-23-3 (TO-236-3, SC-59). Both are surface mount, 3-pin configurations, but require different PCB layouts.

Q: Why is the GSOT24-HT3-GS08 obsolete?

A: The GSOT24-HT3-GS08 has been discontinued by Vishay General Semiconductor. The GSOT24-E3-08 is the active equivalent replacement offering the same electrical performance with improved availability.

Q: Can I use the GSOT24-E3-08 as a direct replacement without PCB modifications?

A: No. The different package footprints (3-WDFN vs. SOT-23-3) require PCB layout changes. However, the electrical performance and pin configuration are compatible for circuit functionality.

Q: Are both parts suitable for automotive applications?

A: The GSOT24-HT3-GS08 carries an automotive grade designation with AEC-Q101 qualification. The GSOT24-E3-08 specifications provided do not explicitly list automotive grade or AEC-Q101 qualification. Verify automotive compliance requirements with Vishay if this is a critical application parameter.

Q: What is the MSL rating for these parts?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity limitations for storage and handling.

Q: Are both parts RoHS compliant?

A: Yes. Both the GSOT24-HT3-GS08 and GSOT24-E3-08 are ROHS3 compliant.

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