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Vishay General Semiconductor - Diodes Division SM6T36AHM3/I
- Part No.:
- SM6T36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36AHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,145
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Product details
Overview
SM6T36AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, featuring 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. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial control systems.
For engineers reviewing the SM6T36AHM3/I datasheet, SM6T36AHM3/I pinout, SM6T36AHM3/I application, or SM6T36AHM3/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and SMB package compatibility with automated placement.
Technical Context
The SM6T36AHM3/I employs a glass passivated silicon junction to achieve low clamping ratio (VC/VBR ≈ 1.46) and low dynamic impedance under transient stress. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation up to 150 °C junction temperature when mounted on 5.0 mm × 5.0 mm copper pads.
Designed for single-polarity surge suppression, it delivers 12.0 A peak pulse current (IPPM) at 49.9 V clamping with 10/1000 μs waveform and exhibits ≤1.0 μA reverse leakage at 30.8 V stand-off. The device meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins |
| VWM | 30.8 V - maximum continuous reverse operating voltage before significant leakage occurs |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - clamping voltage limiting transient energy delivered to protected circuit |
| PPPM | 600 W - peak pulse power handling capacity under standardized surge waveform |
| TJ max | +150 °C - maximum allowable junction temperature enabling use in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.20 mm height and 5.59 mm length for high-density PCB layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SMB (DO-214AA) package with cathode band marking on one end; two-terminal unidirectional configuration. Matte tin-plated leads comply with J-STD-002 solderability and JESD 22-B102 wetting balance standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes current loop during clamping action |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics per stress test requirements including HTGB, AC/DC life test, and ESD HBM ≥ 8 kV |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E material restrictions for green manufacturing |
| Low clamping ratio (VC/VBR = 1.46) | Minimizes voltage overshoot across protected ICs during fast-rising transients (e.g., relay coil flyback) |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails feeding body control modules (BCM) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input of DC-DC converter or LDO regulator. Use Value: Clamps transients to ≤49.9 V, preventing damage to downstream 36 V-rated regulators and ensuring system reset immunity. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor signal trace adjacent to connector interface. Use Value: Limits induced surges from nearby motor drives to <50 V, preserving ADC reference integrity and avoiding false readings. |
| Consumer Appliance Motor Control | Telecom Power Supply Input |
Use Scenario: Suppressing flyback spikes from brushed DC motors in washing machine drum drive circuits. IC Role / Device Role / Timing Role: TVS connected across motor terminals, referenced to chassis ground. Use Value: Absorbs 600 W pulses without degradation, extending MOSFET lifespan and reducing EMI emissions. |
Use Scenario: Guarding primary-side rectifier inputs of AC-DC adapters against lightning-induced surges on mains lines. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor upstream of bridge rectifier and bulk capacitor. Use Value: Withstands 12.0 A peak current at 49.9 V clamp, meeting IEC 61000-4-5 Level 3 (2 kV line-earth) requirements. |
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-E3/52 | Same VWM (30.8 V), higher VC (58.1 V @ 10.3 A), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for under-hood automotive use | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5SMC36A | Same VBR/VWM, identical PPPM (600 W), but SMC (DO-214AB) package (larger, 2.79 mm height), no AEC-Q101 option | Higher thermal mass improves sustained surge handling but requires larger PCB area; lacks automotive validation | Choose for industrial power supplies needing mechanical robustness and higher IFSM (200 A vs. 100 A) |
Compared with SMAJ36A-E3/52 and 1.5SMC36A, SM6T36AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, SMB footprint, and verified 600 W clamping performance-making it optimal for space-constrained, automotive-grade designs requiring full regulatory alignment.
Availability
SM6T36AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, consumer appliance motor control, telecom power supply input, and embedded controller I/O protection requiring stable component supply across production lifecycles.
Supply support for SM6T36AHM3/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 application-specific performance.
The SM6T Series was developed for high-reliability transient suppression in automotive, industrial, and consumer electronics, emphasizing AEC-Q101 qualification, low-profile packaging, and consistent clamping behavior across temperature.
FAQ
What is the polarity configuration of SM6T36AHM3/I?
The SM6T36AHM3/I is a unidirectional Transient Voltage Suppressor. Its cathode is marked by a band on the SMB package body, and it conducts only when the cathode is at a higher potential than the anode-making it suitable for DC rail protection where polarity is fixed. This differs from bidirectional variants (e.g., SM6T36CA) that protect AC or floating signals.
Does SM6T36AHM3/I meet automotive reliability standards?
Yes, SM6T36AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and human-body model ESD (≥8 kV), confirming suitability for automotive powertrain, body electronics, and infotainment systems.
What is the maximum clamping voltage of SM6T36AHM3/I under standard test conditions?
The SM6T36AHM3/I has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and ensures protected circuits remain below critical overvoltage thresholds during surge events.
How does the SMB package of SM6T36AHM3/I compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of SM6T36AHM3/I offers a 5.59 mm × 3.94 mm footprint with 2.20 mm height-smaller than SMC but larger than SMA. It balances board area efficiency with thermal performance (RθJA = 100 °C/W), supporting automated placement while maintaining sufficient power dissipation for 600 W pulses.
Is SM6T36AHM3/I halogen-free and RoHS-compliant?
Yes, the "HM3" suffix explicitly denotes halogen-free and RoHS-compliant construction per JEDEC JS709E and EU Directive 2011/65/EU. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 solderability requirements.
SM6T36AHM3/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:
- Discontinued at Digi-Key
- 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 (SMB)
SM6T36AHM3/I FAQ
1.How can I place an order for SM6T36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36AHM3/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/I reliable?
The price and inventory of SM6T36AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SM6T36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36AHM3/I?
SM6T36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36AHM3/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/I?
For technical support, including SM6T36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36AHM3/I requirements.
6.How does Aetrix verify that SM6T36AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6T36AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SM6T36AHM3/I?
All SM6T36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36AHM3/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/I part is unused and in its original packaging.
Return procedure for SM6T36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36AHM3/I Tags
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