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SM6T200AHM3_A/H: A High-Power 600W Automotive-Grade TVS Diode for Robust Surge Protection in Diverse Applications

July 17, 2025

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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.


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For purchasing inquiries, contact [email protected].

Product Overview: SM6T200AHM3_A/H

Core Parameters

ParameterValue
ManufacturerVishay General Semiconductor
SeriesSM6T, TransZorb®
PackageDO-214AA (SMB), Tape & Reel (TR)
TypeUnidirectional Zener TVS
Reverse Standoff Voltage171V (Typ)
Breakdown Voltage (Min)190V
Clamping Voltage (Max)274V @ 2.2A
Peak Pulse Current2.2A (10/1000µs)
Peak Pulse Power600W
Operating Temperature-65°C to 150°C (TJ)
QualificationAEC-Q101 (Automotive Grade)

Source: Vishay SM6T Series Datasheet

Selection Guide

When to Choose SM6T200AHM3_A/H?

  • 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.

Comparison with Similar Models

ModelClamping VoltagePeak PowerPackageKey Advantage
SM6T200AHM3_A/H274V @ 2.2A600WSMBAutomotive-grade, high reliability
P6KE200A274V @ 1A600WDO-15Lower cost, but non-automotive
SMBJ200A274V @ 1A600WSMBGeneral-purpose, lower current rating

Application Cases

  1. Automotive ECUs: Protects against load-dump transients (ISO 7637-2 compliant).

  2. Industrial Motor Drives: Suppresses inductive kickback in relay circuits.

  3. Telecom Base Stations: Guards against lightning-induced surges (IEC 61000-4-5).

Market Analysis & Future Trends

  • Growing demand for automotive TVS diodes due to EV/ADAS adoption (Market expected to grow at 7.2% CAGR by 2028Source: MarketsandMarkets).

  • Increased ESD protection needs in 5G and IoT devices.


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FAQs

1. What is the difference between unidirectional and bidirectional TVS diodes?

Unidirectional (SM6T200AHM3_A/H): Protects against positive voltage spikes only.
Bidirectional: Guards against both positive and negative transients.

2. Is the SM6T200AHM3_A/H suitable for 12V/24V automotive systems?

Yes, its 171V standoff voltage makes it ideal for load-dump protection in 12V/24V systems.

3. What is the typical response time of this TVS diode?

<1ps, ensuring ultra-fast reaction to ESD events.

4. Can it be used in high-temperature environments?

Yes, it operates reliably from -65°C to 150°C.

5. Where can I buy the SM6T200AHM3_A/H?

Contact [email protected] for pricing and availability.

Future Prospects

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.

Conclusion

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].