July 21, 2025
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In today's electronics landscape, robust surge protection is critical—especially in automotive and industrial systems where voltage transients threaten reliability. The SM6T150AHM3_A/H from Vishay General Semiconductor delivers 600W peak pulse power and AEC-Q101 qualification, making it a top choice for designers seeking compliance and performance. With a clamping voltage of just 207V at 2.9A, this TVS diode ensures sensitive components survive harsh environments. Read on to explore its specifications, selection criteria, and why it outperforms alternatives.
The SM6T150AHM3_A/H is a unidirectional Zener-based TVS diode in a compact DO-214AA (SMB) package, designed for high-energy transient suppression. Key features include:
Peak Pulse Power: 600W (10/1000µs waveform)
Breakdown Voltage (Min): 143V
Clamping Voltage: 207V at 2.9A
Operating Temperature: -65°C to +150°C (TJ)
Certification: AEC-Q101 (Automotive Grade)
| Parameter | Value | Standard |
|---|---|---|
| Reverse Standoff Voltage (VRWM) | 128V | IEC 61000-4-5 |
| Peak Pulse Current (IPP) | 2.9A | 8/20µs pulse |
| Capacitance | Not specified | N/A |
| Mounting | Surface Mount (SMB) | IPC-7351 |
When choosing a TVS diode like the SM6T150AHM3_A/H, consider these steps:
Voltage Rating: Ensure VRWM exceeds the system's operating voltage (128V here).
Clamping Performance: Verify 207V is below the protected component’s max rating.
Environment: Automotive (AEC-Q101) or industrial (-65°C to +150°C).
Package Constraints: SMB footprint suits space-limited designs.
Automotive ECUs: Protects CAN bus lines from load-dump transients.
Industrial Power Supplies: Shields 120V AC/DC converters.
Telecom Equipment: Guards against lightning-induced surges.
TVS diodes are projected to grow at 6.2% CAGR (2023–2030, MarketsandMarkets), driven by automotive electrification and 5G infrastructure. The SM6T series’ compliance with AEC-Q101 positions it strongly in the EV/ADAS market.
| Model | VRWM | PPP | Package | Key Advantage |
|---|---|---|---|---|
| SM6T150AHM3_A/H | 128V | 600W | SMB | AEC-Q101 |
| P6KE150A | 128V | 600W | DO-204AC | Lower cost |
| 1.5KE150A | 128V | 1500W | DO-201 | Higher power |
Why choose SM6T150AHM3_A/H? Its surface-mount design and automotive-grade reliability make it ideal for modern PCB-based systems.
No, it’s a unidirectional TVS diode, protecting against positive voltage transients only.
VBR (143V) is the breakdown voltage where conduction starts; VCLAMP (207V) is the max voltage during surge.
Yes, its 128V VRWM safely covers 48V systems (including load-dump scenarios).
Not for transient events; continuous high power may need thermal management.
Yes, the device meets RoHS 3.0 standards.
Expect higher-power TVS diodes in SMB packages as silicon technology advances. Vishay’s roadmap includes 800W+ variants with lower capacitance for high-speed data lines.
For pricing, samples, or technical support, contact our team at [email protected].
The SM6T150AHM3_A/H combines automotive-grade robustness with compact design, addressing surge protection needs in evolving markets. Its 600W capability and AEC-Q101 certification make it a future-proof choice for engineers.
