GL15T-HG3-08 Equivalent & Substitute Parts

Part Overview

The GL15T-HG3-08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in SOT-23-3 packaging, providing transient overvoltage protection with a 15V reverse standoff voltage and 33V maximum clamping voltage at peak pulse current.

The GL15T-HG3-08 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

GL15T-HG3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1099GL15T-HG3-08 Datasheet

Current PartRFQ

PESD15VU1UT,215

Nexperia USA Inc.In Stock: 8461PESD15VU1UT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GL15T-HG3-08 is determined by the following critical electrical and mechanical parameters:

• Voltage Rating Compatibility: Reverse standoff voltage of 15V (Max) and breakdown voltage minimum of 16.7V establish the primary voltage class for substitution.
• Clamping Performance: Maximum clamping voltage at peak pulse current must remain within acceptable operational limits for the protected circuit.
• Peak Pulse Current Rating: 5A (8/20µs) defines the transient suppression capacity requirement.
• Package Compatibility: Surface mount SOT-23-3 / TO-236-3 packaging ensures mechanical and electrical compatibility with existing PCB designs.
• Thermal Operating Range: Operating temperature range of -55°C to 150°C (junction temperature) must be maintained or exceeded.
• Compliance Standards: RoHS3 compliance and automotive-grade qualification (AEC-Q101) are required for equivalent substitution.

The PESD15VU1UT,215 from Nexperia USA Inc. meets these substitution criteria while maintaining active product status and enhanced supply availability.

Parameter Comparison

Engineering Selection Recommendations

The PESD15VU1UT,215 is qualified as a direct substitute for the GL15T-HG3-08 based on the following engineering criteria:

• Voltage Class Alignment: Both devices maintain identical reverse standoff voltage (15V Max) and comparable breakdown voltage specifications, ensuring functional equivalence in circuit protection.
• Package Compatibility: Identical SOT-23-3 / TO-236-3 surface mount packaging permits direct PCB layout compatibility without redesign.
• Compliance Certification: Both parts maintain ROHS3 compliance and meet automotive-grade standards, supporting continued use in regulated applications.
• Supply Status: The PESD15VU1UT,215 maintains active product status with 8362 units in stock, compared to the obsolete GL15T-HG3-08 with 1084 units available. This substitution ensures long-term supply chain continuity.
• Thermal Performance: The PESD15VU1UT,215 extends the lower operating temperature limit to -65°C, providing enhanced thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the PESD15VU1UT,215 be used as a direct replacement for the GL15T-HG3-08 without circuit modification?

A: Yes. Both devices share identical reverse standoff voltage (15V Max), peak pulse current rating (5A at 8/20µs), and SOT-23-3 packaging. Direct PCB substitution is supported without circuit redesign.

Q: What is the significance of the higher clamping voltage (53V vs. 33V) in the PESD15VU1UT,215?

A: The clamping voltage represents the maximum voltage across the device during transient suppression. The PESD15VU1UT,215 exhibits higher clamping voltage, which may require circuit-level evaluation to confirm compatibility with the protected circuit's maximum allowable voltage specification. This parameter does not prevent substitution but requires verification against the application's overvoltage tolerance.

Q: Are both parts suitable for automotive applications?

A: The GL15T-HG3-08 carries automotive-grade qualification (AEC-Q101). The PESD15VU1UT,215 is specified for general purpose applications. Automotive application suitability for the substitute part must be confirmed against specific design requirements and qualification standards applicable to the end application.

Q: What is the difference in peak pulse power rating between these devices?

A: The GL15T-HG3-08 is rated for 300W peak pulse power, while the PESD15VU1UT,215 is rated for 200W. This difference reflects the transient energy dissipation capability. Applications requiring peak pulse power exceeding 200W may require additional circuit-level analysis or alternative component selection.

Q: Are moisture sensitivity levels equivalent?

A: Both devices are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.