GL12T-HE3-08 Equivalent & Substitute Parts

Part Overview

The GL12T-HE3-08 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 12V reverse standoff voltage with 24V clamping capability at 5A peak pulse current. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

GL12T-HE3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 709GL12T-HE3-08 Datasheet

Current PartRFQ

SL12.TCT

Semtech CorporationIn Stock: 44417SL12.TCT Datasheet

DirectRFQ

PESD12VU1UT,215

Nexperia USA Inc.In Stock: 12263PESD12VU1UT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GL12T-HE3-08 is determined by the following critical parameters:

• Voltage - Reverse Standoff: 12V (Max)
• Voltage - Breakdown (Min): 13.3V minimum
• Voltage - Clamping (Max) @ Ipp: Must not exceed 24V
• Current - Peak Pulse (10/1000µs): 5A (8/20µs)
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Two substitute parts meet these electrical and mechanical criteria. The SL12.TCT from Semtech Corporation provides direct parameter equivalence with active product status. The PESD12VU1UT,215 from Nexperia USA Inc. offers an alternative with higher clamping voltage (39V) and reduced peak pulse power (200W), requiring application-level verification of compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SL12.TCT from Semtech Corporation is the primary substitute for the GL12T-HE3-08. This part maintains identical electrical specifications including 24V clamping voltage and 300W peak pulse power, with matching package and mounting characteristics. The SL12.TCT carries active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The PESD12VU1UT,215 from Nexperia USA Inc. is an alternative substitute with higher clamping voltage (39V) and reduced peak pulse power (200W). This part is qualified to AEC-Q100 automotive standard with extended operating temperature range (-65°C ~ 150°C). Selection of this part requires confirmation that the higher clamping voltage does not exceed circuit protection requirements.

Both substitute parts are available in active production status with ROHS3 compliance and MSL 1 rating, supporting immediate procurement and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the SL12.TCT directly replace the GL12T-HE3-08 without circuit modification?

A: Yes. The SL12.TCT maintains identical voltage ratings (12V standoff, 13.3V breakdown, 24V clamping) and current specifications (5A peak pulse), with matching SOT-23-3 package and surface mount configuration. No circuit redesign is required.

Q: What is the key difference between the SL12.TCT and PESD12VU1UT,215?

A: The primary difference is clamping voltage: SL12.TCT clamps at 24V (matching the original GL12T-HE3-08), while PESD12VU1UT,215 clamps at 39V. The PESD12VU1UT,215 also has reduced peak pulse power (200W vs. 300W). Application-level verification is required if selecting the PESD12VU1UT,215 to confirm the higher clamping voltage is acceptable.

Q: Are both substitute parts available in the same packaging format?

A: Yes. Both SL12.TCT and PESD12VU1UT,215 are supplied in SOT-23-3 surface mount packages. The SL12.TCT is available in Tape & Reel (TR) format, while PESD12VU1UT,215 is supplied in Cut Tape (CT) & Digi-Reel® format. Both are compatible with standard pick-and-place assembly equipment.

Q: What is the operating temperature range difference between the substitutes?

A: The GL12T-HE3-08 and SL12.TCT both operate from -55°C to 150°C (junction temperature). The PESD12VU1UT,215 extends the lower temperature limit to -65°C (ambient temperature) while maintaining the 150°C upper limit. For applications requiring the full -55°C to 150°C range, the SL12.TCT is the preferred selection.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both SL12.TCT and PESD12VU1UT,215 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original GL12T-HE3-08.