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Vishay General Semiconductor - Diodes Division SM6T36AHM3_B/I
- Part No.:
- SM6T36AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36AHM3_B/I.pdf
- Description:
- 600W,36V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,406
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Product details
Overview
SM6T36AHM3_B/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for circuit protection against ESD and surge transients. It features 34.2 V minimum breakdown voltage (VBR), 30.8 V stand-off voltage (VWM), 49.9 V maximum clamping voltage (VC) at 12.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to safeguard automotive sensor signal lines, industrial I/O ports, and power supply rails.
For engineers reviewing the SM6T36AHM3_B/I datasheet, SM6T36AHM3_B/I pinout, SM6T36AHM3_B/I application, or SM6T36AHM3_B/I equivalent, key selection considerations include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, low-inductance SMB package, and verified clamping performance under repetitive surge stress per IEC 61000-4-5.
Technical Context
The SM6T36AHM3_B/I operates as a unidirectional avalanche diode with cathode-banded polarity, leveraging glass-passivated junction technology for stable breakdown behavior and low leakage (<1.0 μA at VWM). Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = 150 °C) support reliable operation on standard PCB copper pads (0.2" × 0.2") without forced cooling.
It delivers precise transient suppression with defined 10/1000 μs waveform response, where clamping occurs at ≤49.9 V up to 12.0 A IPPM, and maintains <1.0 μA reverse leakage at 30.8 V - enabling robust protection of 3.3 V–24 V logic interfaces and MOSFET gate drivers in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - ensures predictable avalanche onset across production lot |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - limits downstream voltage stress during surge events |
| PPPM | 600 W - sustains high-energy transients common in automotive load-dump and inductive switching |
| IFSM | 100 A - withstands single half-sine 10 ms forward surge, critical for power rail protection |
| TJ max | +150 °C - supports under-hood automotive deployment and industrial ambient extremes |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line ground or low-side reference; enables unidirectional clamping to ground |
| Cathode | Avalanche conduction terminal / Clamping node | Banded end; connects to protected signal/power line; conducts surge current to ground when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles automotive ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges without degradation |
| Glass passivated chip junction | Ensures long-term stability of VBR and low parametric drift over temperature and life cycle |
| MSL Level 1 (260 °C reflow) | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics per stress test conditions including HTGB, HTRB, and TCT |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transients before reaching IC input pins. Use Value: Limits voltage to ≤49.9 V during 12 V system load dump (ISO 7637-2), preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point, clamping induced spikes on 24 V DC inputs. Use Value: Withstands 100 A IFSM and 600 W PPPM, enabling reliable operation in factory automation with frequent inductive switching. |
| Power Supply Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Secondary overvoltage protection on 12 V/24 V DC-DC converter outputs feeding sensitive microcontrollers and memory. IC Role / Device Role / Timing Role: Parallel-connected TVS providing fast-response clamping to complement upstream fuses and filters. Use Value: Low clamping voltage (49.9 V) prevents overvoltage damage to downstream LDOs and PMICs during transient coupling from adjacent circuits. | Use Scenario: ESD and surge protection on USB 2.0 VBUS and D+/D− lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Board-level protection component placed near USB connector, referenced to system ground. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) due to low capacitance and fast response, without signal integrity impact. |
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 SMB package, 36 V VWM, but lower PPPM (400 W) and higher VC (58.1 V) | Limited to lower-energy transients; not AEC-Q101 qualified | Acceptable for commercial-grade consumer applications where automotive reliability is not required |
| 1.5SMC36A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR range | Requires PCB layout change; suited for high-surge industrial power supplies | Preferred when >600 W surge margin is needed and board space allows larger footprint |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, the SM6T36AHM3_B/I uniquely balances AEC-Q101 qualification, 600 W capability, and compact SMB footprint - making it optimal for space-constrained automotive and industrial edge nodes requiring certified reliability without package redesign.
Availability
SM6T36AHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and DC-DC converter output protection requiring stable component supply and full traceability.
Supply support for SM6T36AHM3_B/I 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 optoelectronics with emphasis on reliability and automotive-grade validation.
The SM6T Series is engineered specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-inductance packaging, and tightly controlled clamping parameters.
FAQ
What is the clamping voltage of SM6T36AHM3_B/I at its rated peak pulse current?
The SM6T36AHM3_B/I 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 Vishay's test conditions in Document Number 88385 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T36AHM3_B/I maintains this clamping performance across its qualified temperature range and lifetime.
Is SM6T36AHM3_B/I suitable for automotive applications?
Yes, SM6T36AHM3_B/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock required for automotive electronics. Its halogen-free, RoHS-compliant construction and 150 °C maximum junction temperature further support under-hood and ADAS module deployment. The SM6T36AHM3_B/I meets automotive surge immunity standards such as ISO 7637-2 when applied per recommended layout.
What does the "HM3_B/I" suffix mean in SM6T36AHM3_B/I?
The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction; "B" indicates revision level B per Vishay's internal documentation; "I" specifies packaging in 13-inch diameter tape-and-reel with 3200 units per reel. This ordering code ensures traceability to qualified material, process, and test data - critical for automotive and industrial BOM control. The SM6T36AHM3_B/I is fully compatible with standard SMB placement equipment.
How does SM6T36AHM3_B/I compare to bidirectional TVS diodes like SM6T36CA?
The SM6T36AHM3_B/I is unidirectional and intended for DC-coupled protection where polarity is fixed (e.g., 12 V supply to ground), while SM6T36CA is bidirectional for AC or dual-polarity signal lines (e.g., RS-485). Their VBR and VC values differ: SM6T36CA has symmetric breakdown in both directions, whereas SM6T36AHM3_B/I only conducts in reverse bias. The SM6T36AHM3_B/I cannot substitute for SM6T36CA in AC applications without circuit redesign.
What is the thermal resistance of SM6T36AHM3_B/I, and how does it affect PCB layout?
The SM6T36AHM3_B/I 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. To maintain safe junction temperatures under repeated surges, PCB layout must follow Vishay's recommended pad dimensions and avoid excessive trace length or isolation. Increasing copper area reduces RθJA, but the SM6T36AHM3_B/I is rated for operation up to +150 °C even with standard layout - no heatsink required.
SM6T36AHM3_B/I 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:
- Active
- 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:
- 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)
SM6T36AHM3_B/I FAQ
1.How can I place an order for SM6T36AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36AHM3_B/I 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 SM6T36AHM3_B/I reliable?
The price and inventory of SM6T36AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T36AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36AHM3_B/I?
SM6T36AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36AHM3_B/I 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 SM6T36AHM3_B/I?
For technical support, including SM6T36AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36AHM3_B/I requirements.
6.How does Aetrix verify that SM6T36AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T36AHM3_B/I 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 SM6T36AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T36AHM3_B/I?
All SM6T36AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36AHM3_B/I, 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 SM6T36AHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T36AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36AHM3_B/I Tags
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