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Vishay General Semiconductor - Diodes Division SM6T36AHE3_A/H
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- Part No.:
- SM6T36AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36AHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,157
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Product details
Overview
SM6T36AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 34.2 V minimum breakdown voltage (VBR), 30.8 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 12.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform - used to protect automotive sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SM6T36AHE3_A/H datasheet, SM6T36AHE3_A/H pinout, SM6T36AHE3_A/H application, or SM6T36AHE3_A/H equivalent, key selection criteria include clamping performance under 12 A surge, AEC-Q101 qualification for automotive use, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 100 °C/W) on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
The SM6T36AHE3_A/H operates as a unidirectional avalanche-clamping device, triggered when reverse voltage exceeds 34.2 V (min) and clamping within 49.9 V at 12.0 A (10/1000 μs). It features glass-passivated junction and low-inductance SMB packaging optimized for fast transient response.
Designed for automotive-grade reliability, it meets AEC-Q101 qualification, supports 150 °C maximum junction temperature, and delivers 5.0 W steady-state power dissipation at 50 °C ambient on infinite heatsink - with derating above 25 °C per published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 34.2 V - ensures reliable avalanche conduction onset above normal operating voltage of 30.8 V |
| VWM | 30.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 49.9 V at 12.0 A - limits protected circuit voltage during 10/1000 μs surge |
| PPPM | 600 W - peak transient power handling capability under standardized surge waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| RθJA | 100 °C/W - defines thermal rise from junction to ambient on standard PCB pad layout |
| AEC-Q101 | Qualified - confirms reliability for automotive electronics per stress-test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1, 260 °C reflow compatible. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal / protected line connection point | Connected to signal or power line requiring transient protection; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over temperature and lifetime |
| Low-inductance SMB package | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time) |
| 600 W peak pulse power | Handles high-energy surges from inductive load switching without failure |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control and ADAS sensors |
| RoHS-compliant & halogen-free option | Meets environmental compliance requirements for global automotive supply chains |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting LIN bus sensor nodes from load-dump and ISO 7637-2 pulse 1/2a transients in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output line and chassis ground to clamp negative-going spikes. Use Value: Limits voltage to ≤49.9 V during 12 A surge, preventing damage to 3.3 V or 5 V interface ICs downstream. | Use Scenario: Safeguarding IGBT gate drivers in PLC-controlled motor starters exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS connected across gate-to-source to absorb turn-off energy and prevent false triggering. Use Value: Clamps gate voltage excursion within safe margin (≤49.9 V) while maintaining <1.0 μA leakage at 30.8 V standby. |
| Automotive Power Distribution Module | Telecom DC Power Input Protection |
Use Scenario: Surge suppression on 12 V battery-fed power rails in junction boxes and fuse panels. IC Role / Device Role / Timing Role: Primary TVS on input side of DC-DC converters feeding infotainment systems. Use Value: Withstands 600 W pulses without degradation, supporting AEC-Q101 lifecycle requirements for 15-year service life. | Use Scenario: Front-end protection for PoE-powered network switches subjected to lightning-induced surges on DC input. IC Role / Device Role / Timing Role: Unidirectional clamp on +48 V rail to limit overvoltage before DC-DC regulation stage. Use Value: Delivers 49.9 V clamping at 12 A with RθJA = 100 °C/W, enabling thermal stability on compact telecom PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5B | Same VWM (30.8 V), lower PPPM (400 W), SMA package (larger RθJA = 140 °C/W) | Not AEC-Q101 qualified; suitable for commercial industrial use only | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5SMC36A | Same VWM/VC, higher PPPM (1500 W), SMC package (RθJA = 15 °C/W with heatsink) | Larger footprint; requires thermal management for sustained surges | Select when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space permits SMC |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, the SM6T36AHE3_A/H offers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and SMB footprint - making it preferred for space-constrained automotive modules where qualification and reliability are mandatory.
Availability
SM6T36AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate circuits, and telecom DC input protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T36AHE3_A/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, TVS devices, and power MOSFETs with emphasis on reliability and application-specific performance.
The SM6T Series is designed specifically for robust transient suppression in automotive and industrial environments - delivering AEC-Q101-qualified, low-inductance TVS protection in compact SMB packages.
FAQ
What is the clamping voltage of SM6T36AHE3_A/H at its rated peak pulse current?
The SM6T36AHE3_A/H has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T36AHE3_A/H maintains this clamping performance while operating within its 600 W peak pulse power rating.
Is SM6T36AHE3_A/H qualified for automotive applications?
Yes, SM6T36AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88385. This qualification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - validating suitability for automotive powertrain, body electronics, and ADAS subsystems. The SM6T36AHE3_A/H is rated for operation from −65 °C to +150 °C junction temperature.
What does the "HE3" suffix indicate in SM6T36AHE3_A/H?
The "HE3" suffix in SM6T36AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification, per Vishay's ordering nomenclature in datasheet 88385. The "H" indicates the packaging variant (7″ tape and reel), and "E3" specifies lead (Pb)-free matte tin plating. The "_A/H" revision code identifies the specific manufacturing lot and process revision per Vishay's internal tracking.
How does SM6T36AHE3_A/H differ from bidirectional TVS diodes like SM6T36CA?
The SM6T36AHE3_A/H is unidirectional and features a cathode band marking; it conducts only in reverse breakdown and blocks forward current. In contrast, SM6T36CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. The SM6T36AHE3_A/H exhibits 1.0 μA max reverse leakage at 30.8 V, whereas SM6T36CA doubles the leakage limit for VWM ≤ 10 V - a distinction not applicable here but critical for low-power sensing nodes.
What is the thermal resistance of SM6T36AHE3_A/H, and how does it affect PCB layout?
The SM6T36AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay datasheet 88385. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces RθJA. For reliable operation at full 5.0 W steady-state dissipation, the SM6T36AHE3_A/H requires careful thermal design to maintain TJ ≤ 150 °C.
SM6T36AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T36AHE3_A/H FAQ
1.How can I place an order for SM6T36AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36AHE3_A/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 SM6T36AHE3_A/H reliable?
The price and inventory of SM6T36AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T36AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36AHE3_A/H?
SM6T36AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36AHE3_A/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 SM6T36AHE3_A/H?
For technical support, including SM6T36AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36AHE3_A/H requirements.
6.How does Aetrix verify that SM6T36AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T36AHE3_A/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 SM6T36AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T36AHE3_A/H?
All SM6T36AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36AHE3_A/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 SM6T36AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T36AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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