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Vishay General Semiconductor - Diodes Division SM6T220AHM3_A/I
- Part No.:
- SM6T220AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHM3_A/I.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,243
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Product details
Overview
SM6T220AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 2.0 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T220AHM3_A/I datasheet, SM6T220AHM3_A/I pinout, SM6T220AHM3_A/I application, or SM6T220AHM3_A/I equivalent, key selection criteria include clamping performance at 220 V VBR, AEC-Q101 qualification status, halogen-free RoHS compliance, and SMB package thermal resistance of 100 °C/W junction-to-ambient.
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 overvoltage events. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 188 V VWM).
The device delivers 600 W peak pulse power handling per 10/1000 μs waveform under standard mounting conditions (0.2" × 0.2" copper pads), with thermal resistance RθJA = 100 °C/W and maximum operating junction temperature of +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA test current - defines reliable conduction onset range under transient stress |
| VWM | 188 V - maximum continuous reverse stand-off voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - clamping voltage limiting stress on protected ICs or MOSFETs |
| PPPM | 600 W - peak transient power dissipation capability without failure |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance determines derating needed above 25 °C ambient |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to system ground or low-impedance reference during clamping event |
| Cathode | Transient current input node | Connected to line being protected; band-marked end accepts surge current into device |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust protection against high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive systems |
| Glass passivated chip junction | Ensures stable VBR tolerance and low parameter drift over temperature and lifetime |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow assembly without moisture-induced damage |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications requiring zero defects and extended temperature cycling |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, load dump) |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting CAN/LIN bus interface ICs and Hall-effect sensors in engine control modules from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤328 V at 2.0 A, preventing latch-up or gate oxide rupture in protected transceivers. | Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs connected to relay coils or solenoid drivers. IC Role / Device Role / Timing Role: Standoff protector absorbing 600 W pulses induced by coil de-energization. Use Value: Maintains 188 V working voltage margin while clamping to 328 V, preserving signal integrity during switching. |
| Telecom Line Interface | Consumer Power Adapter Feedback Path |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on differential data lines. Use Value: Withstands 2.0 A peak pulse at 328 V clamp, meeting IEC 61000-4-5 Level 3 immunity requirements. | Use Scenario: Securing opto-isolator feedback paths in AC/DC adapters against secondary-side transients. IC Role / Device Role / Timing Role: High-VBR unidirectional clamp isolating error amplifier output from power stage noise. Use Value: 220 V VBR ensures no conduction during normal 198–242 VAC-derived DC rails, yet triggers reliably during overvoltage faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A-E3/5B | Same VBR (209–231 V), lower PPPM = 400 W, SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load-dump where 600 W is required | Select when cost sensitivity outweighs peak power need and board space allows larger standoff |
| 1.5SMC220A | Same VBR, PPPM = 1500 W, SMC package (RθJA = 60 °C/W), non-AEC-Q101 | Overqualified for clamping energy but lacks automotive qualification and has larger footprint | Choose only if higher surge margin is critical and AEC-Q101 is not mandated |
Compared with SMAJ220A-E3/5B and 1.5SMC220A, SM6T220AHM3_A/I uniquely combines AEC-Q101 qualification, 600 W pulse rating, SMB footprint, and halogen-free construction-making it optimal for space-constrained automotive electronics requiring production-grade reliability.
Availability
SM6T220AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor units, industrial motor drive interfaces, telecom line protection, and consumer power adapter feedback circuits requiring stable component supply across long production lifecycles.
Supply support for SM6T220AHM3_A/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 is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems-delivering consistent clamping behavior, AEC-Q101 qualification, and optimized thermal performance in compact SMB packages.
FAQ
What is the breakdown voltage tolerance for SM6T220AHM3_A/I?
The SM6T220AHM3_A/I has a specified breakdown voltage (VBR) range of 209 V to 231 V at 1.0 mA test current, representing ±5% tolerance around the nominal 220 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature ranges, critical for protecting 200 V-class power stages and interfaces. The SM6T220AHM3_A/I maintains this specification under standard test conditions per Vishay Document 88385.
Is SM6T220AHM3_A/I suitable for automotive applications?
Yes, SM6T220AHM3_A/I is AEC-Q101 qualified and designated for automotive use via the HM3 suffix, confirming validation for temperature cycling, humidity testing, mechanical shock, and other stress requirements defined in the AEC standard. Its 150 °C maximum junction temperature, halogen-free composition, and MSL Level 1 rating make SM6T220AHM3_A/I appropriate for under-hood and body-control module deployments.
What does the "_A/I" suffix indicate in SM6T220AHM3_A/I?
The "_A/I" suffix in SM6T220AHM3_A/I denotes the revision code and packaging format: "A" is the document revision level per Vishay's internal change control, and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This matches the ordering code SM6T220AHM3_B/I shown in the Vishay datasheet's ordering table, confirming commercial-grade halogen-free RoHS compliance and AEC-Q101 qualification.
How does SM6T220AHM3_A/I compare to bidirectional TVS diodes?
SM6T220AHM3_A/I is unidirectional and features polarity marking (cathode band); it conducts only during reverse-biased overvoltage events, making it ideal for DC-biased lines like power rails or single-ended signals. Bidirectional variants (e.g., SM6T220CA) lack polarity markings and protect AC or symmetrical signals-but exhibit higher leakage and require different layout considerations. SM6T220AHM3_A/I offers lower leakage (<1.0 μA at 188 V) than equivalent bidirectional types.
What is the maximum clamping voltage of SM6T220AHM3_A/I at rated peak pulse current?
The SM6T220AHM3_A/I has a maximum clamping voltage (VC) of 328 V at 2.0 A peak pulse current with a 10/1000 μs waveform, as specified in the Vishay SM6T datasheet (Document 88385, page 2). This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is measured under standardized test conditions using 0.2" × 0.2" copper pads per terminal.
SM6T220AHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 2A
- 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)
SM6T220AHM3_A/I FAQ
1.How can I place an order for SM6T220AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHM3_A/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 SM6T220AHM3_A/I reliable?
The price and inventory of SM6T220AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T220AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHM3_A/I?
SM6T220AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHM3_A/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 SM6T220AHM3_A/I?
For technical support, including SM6T220AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHM3_A/I requirements.
6.How does Aetrix verify that SM6T220AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T220AHM3_A/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 SM6T220AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T220AHM3_A/I?
All SM6T220AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHM3_A/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 SM6T220AHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T220AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220AHM3_A/I Tags
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