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Vishay General Semiconductor - Diodes Division SM6T150AHM3_B/H
- Part No.:
- SM6T150AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150AHM3_B/H.pdf
- Description:
- 600W,150V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,988
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Product details
Overview
SM6T150AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 150 V standoff voltage (VWM), 207 V clamping voltage (VC) at 2.9 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and power rails.
For engineers reviewing the SM6T150AHM3_B/H datasheet, SM6T150AHM3_B/H pinout, SM6T150AHM3_B/H application, or SM6T150AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream circuitry during inductive switching events or lightning-induced surges. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 128 V).
The device delivers 600 W peak pulse power handling with low clamping ratio (VC/VBR ≈ 1.31) and exhibits low inductance due to SMB package geometry, supporting fast response to sub-microsecond transients. It is qualified to AEC-Q101 and rated for operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 143 V / 158 V at 1.0 mA - precise breakdown threshold ensuring predictable turn-on |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - clamping voltage limiting stress on protected ICs |
| PPPM | 600 W - surge energy absorption capability compliant with IEC 61000-4-5 Level 4 |
| RθJA | 100 °C/W - thermal resistance defining derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature enabling under-hood automotive use |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standard |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, 0.220" × 0.130" body, cathode band marking on one end. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configuration |
| Cathode | Current exit point during reverse clamping | Connected to protected line; band-marked end defines polarity for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental standards and supports lead-free reflow soldering up to 260 °C peak |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients per ISO 7637-2 Pulse 5a without degradation |
| Low clamping voltage (207 V) | Minimizes overvoltage exposure to downstream MOSFETs or CAN transceivers during surge events |
| MSL Level 1 moisture sensitivity | Enables unlimited floor life and eliminates bake requirements prior to SMT assembly |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤207 V while maintaining <1.0 μA leakage at 128 V, preserving signal integrity and measurement accuracy. | Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers subjected to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff protector on each input channel, referenced to common ground plane. Use Value: Absorbs 600 W pulses without failure, enabling reliable operation in factory automation with frequent inductive switching. |
| Automotive Body Control Module | Telecom Power Supply Protection |
Use Scenario: Guarding LIN bus transceiver power pins against battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail upstream of linear regulator. Use Value: Clamps to 207 V within nanoseconds, preventing latch-up or permanent damage to 5 V LDOs and transceivers. | Use Scenario: Secondary-side surge suppression on 48 V telecom power supplies feeding base station RF modules. IC Role / Device Role / Timing Role: Final-stage TVS on DC output rail before connector interface. Use Value: Provides 600 W pulse handling with RθJA = 100 °C/W, enabling compact heatsink-free designs in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/5B | Same VWM (128 V), lower PPPM (400 W), SMA package (larger RθJA = 130 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Choose when cost sensitivity outweighs peak power requirement and board space allows larger footprint |
| 1.5SMC150A | Same VWM and PPPM, but SMC package (higher IFSM = 200 A, RθJA = 60 °C/W) | Better thermal performance and surge current handling, but 30% larger PCB area | Select for industrial power supplies requiring higher reliability margin and improved thermal dissipation |
Compared with SMAJ150A-E3/5B and 1.5SMC150A, SM6T150AHM3_B/H offers optimal balance of AEC-Q101 qualification, halogen-free compliance, SMB footprint density, and 600 W surge capability-making it preferred for space-constrained automotive ECUs where regulatory compliance and assembly compatibility are critical.
Availability
SM6T150AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, body control modules, and telecom power supply protection requiring stable component supply across production lifecycles.
Supply support for SM6T150AHM3_B/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SM6T Series is engineered specifically for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of SM6T150AHM3_B/H under standard test conditions?
The SM6T150AHM3_B/H has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at 2.9 A peak pulse current. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for protected circuits. The clamping performance is validated across temperature and remains stable due to the device's glass-passivated junction structure.
Is SM6T150AHM3_B/H qualified for automotive applications?
Yes, SM6T150AHM3_B/H is AEC-Q101 qualified, as indicated by the HM3 suffix in its ordering code. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and accelerated life testing required for automotive under-hood and chassis-mounted electronics. The device is approved for use in engine control units, ADAS sensors, and body control modules.
What does the "HM3" suffix signify in SM6T150AHM3_B/H?
The "HM3" suffix in SM6T150AHM3_B/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade M3 (halogen-free, non-automotive) and E3 (RoHS-compliant, non-automotive) versions. The "B/H" indicates packaging in 7" tape-and-reel format with 750-unit quantity and revision level B.
How does SM6T150AHM3_B/H compare to bidirectional TVS diodes like SM6T150CA?
SM6T150AHM3_B/H is unidirectional and intended for DC-coupled lines with defined polarity, whereas SM6T150CA is bidirectional for AC or floating signal paths. The unidirectional version offers lower leakage (<1.0 μA at VWM) and tighter VBR tolerance, making SM6T150AHM3_B/H preferable for 12 V/24 V automotive power rails where reverse conduction must be avoided.
What is the thermal resistance of SM6T150AHM3_B/H, and how does it affect layout design?
SM6T150AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. This value assumes minimum recommended pad layout per Vishay spec; increasing copper area reduces RθJA. For sustained surge duty cycles, designers should verify junction temperature stays below +150 °C using this RθJA and expected power dissipation.
SM6T150AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T150AHM3_B/H FAQ
1.How can I place an order for SM6T150AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150AHM3_B/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM6T150AHM3_B/H reliable?
The price and inventory of SM6T150AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T150AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150AHM3_B/H?
SM6T150AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150AHM3_B/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM6T150AHM3_B/H?
For technical support, including SM6T150AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150AHM3_B/H requirements.
6.How does Aetrix verify that SM6T150AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T150AHM3_B/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM6T150AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T150AHM3_B/H?
All SM6T150AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150AHM3_B/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM6T150AHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T150AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150AHM3_B/H Tags
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