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Vishay General Semiconductor - Diodes Division SM6T220A-M3/52
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- Part No.:
- SM6T220A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220A-M3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,527
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Product details
Overview
SM6T220A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR = 209–231 V at 1.0 mA), 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 sensor signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SM6T220A-M3/52 datasheet, SM6T220A-M3/52 pinout, SM6T220A-M3/52 application, or SM6T220A-M3/52 equivalent, key selection criteria include verified clamping performance at 220 V nominal standoff, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive surge stress. Its low-inductance SMB package enables fast response (<1 ns) to ESD and lightning-induced transients while maintaining thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements when applied per recommended PCB layout. It supports operation from −65 °C to +150 °C junction temperature and delivers 5.0 W steady-state power dissipation at 50 °C ambient on infinite heatsink conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 188 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - limits downstream IC voltage stress during worst-case surge events |
| PPPM | 600 W - peak transient energy absorption capacity without failure under standardized waveform |
| RθJA | 100 °C/W - thermal resistance determines safe derating above 25 °C ambient for sustained reliability |
| TJ range | −65 °C to +150 °C - enables deployment in under-hood automotive environments and industrial motor drives |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping |
| Cathode | Avalanche voltage reference node | Connected to protected line; establishes VWM/VBR threshold relative to anode potential |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for high-speed data lines |
| AEC-Q101 qualification path (HM3 variant) | Supports qualification-ready design reuse across automotive ECUs without additional component validation effort |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12 V supply rails feeding engine control modules (ECMs). IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and LDO input to limit voltage excursion to ≤328 V. Use Value: Prevents permanent damage to 3.3 V/5 V microcontrollers and CAN transceivers during alternator field collapse events. | Use Scenario: Protecting gate drivers and current-sense amplifiers in 3-phase inverter stages. IC Role / Device Role / Timing Role: Clamping inductive kickback from IGBT/MOSFET switching on DC bus and phase-leg signal paths. Use Value: Maintains signal integrity and prevents latch-up in isolated gate drivers during 600 V+ switching transitions. |
| Telecom Base Station Power Supply | Consumer Appliance Mainboard Surge Protection |
Use Scenario: Guarding 48 V backplane inputs against lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input stage upstream of DC/DC converters and PMICs. Use Value: Absorbs up to 600 W transient energy without degradation, meeting IEC 61000-4-5 Level 4 compliance. | Use Scenario: Safeguarding microcontroller I/O pins and communication interfaces (UART, I²C) in washing machine mainboards. IC Role / Device Role / Timing Role: Localized clamping on sensor signal lines exposed to relay coil transients and ESD events. Use Value: Limits voltage to <330 V during 8/20 μs surges, preserving 3.3 V logic-level interface integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Same SMB package, identical VBR (209–231 V), but rated for 600 W with tighter VC tolerance (328 V max vs. 330 V typical) | Designed for general industrial use; lacks M3 halogen-free designation and AEC-Q101 pathway | Select when halogen-free compliance is not required and cost optimization is prioritized over automotive qualification readiness |
| 1.5SMC220A | Larger SMC (DO-214AB) package, same electrical specs, higher RθJA (75 °C/W), 1.5 kW rating | Used where board space allows larger footprint and higher steady-state power handling is needed | Choose when thermal margin is constrained and PCB layout permits 2.5 mm wider body; not drop-in compatible due to pad dimensions |
Compared with SMBJ220A and 1.5SMC220A, SM6T220A-M3/52 provides halogen-free construction and direct AEC-Q101 qualification path (via HM3 variant), making it optimal for automotive-tier-1 designs requiring material compliance and qualification traceability without sacrificing clamping precision or surge rating.
Availability
SM6T220A-M3/52 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom base station power supply applications requiring stable component supply, halogen-free compliance, and consistent surge performance across production lots.
Supply support for SM6T220A-M3/52 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, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping voltage, low leakage, and AEC-Q101 readiness are mandatory design requirements.
FAQ
What is the maximum clamping voltage of SM6T220A-M3/52 under a 10/1000 μs surge?
The SM6T220A-M3/52 has a maximum clamping voltage (VC) of 328 V when subjected to a 2.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and ensures downstream circuitry remains within safe voltage limits during standardized surge events. The clamping performance is guaranteed across the full operating temperature range.
Is SM6T220A-M3/52 qualified for automotive applications?
SM6T220A-M3/52 itself is halogen-free and RoHS-compliant, but AEC-Q101 qualification applies only to variants with HM3 or HE3 suffixes (e.g., SM6T220AHM3_X). The M3 suffix indicates material compliance; for automotive production, engineers must specify the HM3 version and confirm qualification status via Vishay's official documentation. SM6T220A-M3/52 serves as the commercial-grade baseline for such qualified derivatives.
What is the standoff voltage (VWM) of SM6T220A-M3/52, and how does it relate to system design?
The standoff voltage (VWM) of SM6T220A-M3/52 is 188 V - the maximum DC or continuous reverse voltage the device can block without exceeding 1.0 μA leakage. In system design, this value must exceed the peak normal operating voltage (e.g., 13.5 V for 12 V automotive systems, 48 V for telecom) with sufficient margin to avoid false triggering. For 220 V nominal systems, VWM ensures reliable blocking during steady-state operation while enabling fast clamping above that threshold.
How does the SMB (DO-214AA) package of SM6T220A-M3/52 affect PCB layout?
The SMB package of SM6T220A-M3/52 requires minimum 5.0 mm × 5.0 mm copper pads per terminal for thermal performance per datasheet recommendations. Its compact 3.94 mm × 2.20 mm footprint supports high-density layouts, but designers must observe the cathode band orientation and avoid solder mask slivers between terminals. Pad layout directly impacts RθJA (100 °C/W) and surge current handling - undersized pads increase thermal resistance and risk parametric shift during repeated transients.
What is the peak pulse current rating (IPPM) of SM6T220A-M3/52 at its maximum clamping voltage?
At its maximum clamping voltage of 328 V, SM6T220A-M3/52 is rated for a peak pulse current (IPPM) of 2.0 A under the 10/1000 μs waveform. This value is derived from PPPM = VC × IPPM, confirming the 600 W rating. The device maintains this capability across −65 °C to +125 °C ambient, with derating applied above 25 °C per Figure 2 in datasheet 88385.
SM6T220A-M3/52 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T220A-M3/52 FAQ
1.How can I place an order for SM6T220A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220A-M3/52 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 SM6T220A-M3/52 reliable?
The price and inventory of SM6T220A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T220A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220A-M3/52?
SM6T220A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220A-M3/52 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 SM6T220A-M3/52?
For technical support, including SM6T220A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220A-M3/52 requirements.
6.How does Aetrix verify that SM6T220A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T220A-M3/52 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 SM6T220A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T220A-M3/52?
All SM6T220A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220A-M3/52, 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 SM6T220A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T220A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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