July 17, 2025
827
In today’s rapidly evolving automotive and industrial electronics sectors, robust surge protection is critical to safeguarding sensitive components from voltage transients. The SM6T200AHM3_A/H from Vishay General Semiconductor stands out as a high-power 600W TVS diode designed for automotive-grade (AEC-Q101) applications. With a 274V clamping voltage and 2.2A peak pulse current, this unidirectional Zener diode ensures reliable ESD and surge protection in demanding environments.

For purchasing inquiries, contact [email protected].
| Parameter | Value |
|---|---|
| Manufacturer | Vishay General Semiconductor |
| Series | SM6T, TransZorb® |
| Package | DO-214AA (SMB), Tape & Reel (TR) |
| Type | Unidirectional Zener TVS |
| Reverse Standoff Voltage | 171V (Typ) |
| Breakdown Voltage (Min) | 190V |
| Clamping Voltage (Max) | 274V @ 2.2A |
| Peak Pulse Current | 2.2A (10/1000µs) |
| Peak Pulse Power | 600W |
| Operating Temperature | -65°C to 150°C (TJ) |
| Qualification | AEC-Q101 (Automotive Grade) |
Source: Vishay SM6T Series Datasheet
Automotive Electronics: Compliant with AEC-Q101, making it ideal for ECUs, infotainment systems, and ADAS.
Industrial Power Supplies: Protects against load-dump and switching surges.
Telecom & Networking: Shields sensitive circuits from ESD and lightning-induced transients.
| Model | Clamping Voltage | Peak Power | Package | Key Advantage |
|---|---|---|---|---|
| SM6T200AHM3_A/H | 274V @ 2.2A | 600W | SMB | Automotive-grade, high reliability |
| P6KE200A | 274V @ 1A | 600W | DO-15 | Lower cost, but non-automotive |
| SMBJ200A | 274V @ 1A | 600W | SMB | General-purpose, lower current rating |
Automotive ECUs: Protects against load-dump transients (ISO 7637-2 compliant).
Industrial Motor Drives: Suppresses inductive kickback in relay circuits.
Telecom Base Stations: Guards against lightning-induced surges (IEC 61000-4-5).
Growing demand for automotive TVS diodes due to EV/ADAS adoption (Market expected to grow at 7.2% CAGR by 2028 – Source: MarketsandMarkets).
Increased ESD protection needs in 5G and IoT devices.

Unidirectional (SM6T200AHM3_A/H): Protects against positive voltage spikes only.
Bidirectional: Guards against both positive and negative transients.
Yes, its 171V standoff voltage makes it ideal for load-dump protection in 12V/24V systems.
<1ps, ensuring ultra-fast reaction to ESD events.
Yes, it operates reliably from -65°C to 150°C.
Contact [email protected] for pricing and availability.
With the rise of autonomous vehicles and smart grids, high-power TVS diodes like the SM6T200AHM3_A/H will see increased adoption. Future iterations may focus on lower capacitance for high-speed data lines.
The SM6T200AHM3_A/H is a high-reliability, automotive-grade TVS diode offering 600W surge protection in a compact SMB package. Whether for automotive, industrial, or telecom applications, it ensures robust transient suppression.
For bulk orders or technical support, reach out to [email protected].