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Vishay General Semiconductor - Diodes Division SM6T220AHE3/52
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- Part No.:
- SM6T220AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHE3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,729
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Product details
Overview
SM6T220AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR), 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 provides robust overvoltage protection for automotive-grade power rails and sensor interfaces.
For engineers reviewing the SM6T220AHE3/52 datasheet, SM6T220AHE3/52 pinout, SM6T220AHE3/52 application, or SM6T220AHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking convention, and real-world clamping performance under standardized surge conditions.
Technical Context
The SM6T220AHE3/52 operates as a unidirectional avalanche diode with cathode-band polarity marking, designed to clamp transient overvoltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 188 V stand-off).
It is rated for non-repetitive 10/1000 μs surges up to 2.0 A (IPPM), delivering 328 V clamping at that current, and supports continuous power dissipation of 5.0 W on infinite heatsink at 50 °C ambient. Junction temperature range spans –65 °C to +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 avalanche initiation window for consistent clamping onset |
| VWM | 188 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - clamping voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability under standard lightning/surge waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, 0.220" × 0.130" footprint, MSL Level 1 rating, and J-STD-002/JESD 22-B102 solderability compliance. Cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or reference node; carries surge current during clamping event |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 24 V rail); voltage referenced to anode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a transients in 24 V automotive systems |
| AEC-Q101 qualified (HE3 suffix) | Validated reliability for engine control units, ADAS sensors, and body electronics without additional qualification effort |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during clamping, reducing stress on 250 V-rated MOSFETs and gate drivers |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control modules from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC-DC input, conducting only during overvoltage events. Use Value: Clamps transients to ≤328 V, keeping downstream regulators and microcontrollers within safe operating area per ISO 16750-2. | Use Scenario: Safeguarding analog inputs of industrial pressure/temperature sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: Standby protection device across signal and ground, activated only during ESD or surge events. Use Value: Limits induced voltage spikes to <330 V while maintaining <1.0 μA leakage at 188 V, preserving sensor accuracy. |
| Telecom DC Power Input Protection | On-Board Charger (OBC) Auxiliary Supply Protection |
Use Scenario: Shielding 48 V telecom rectifier outputs from lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary clamping element on DC input bus, coordinated with upstream fuses and filters. Use Value: Absorbs 600 W pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV) requirements when properly mounted. | Use Scenario: Securing auxiliary 12 V supply in EV on-board chargers exposed to high-di/dt noise from main inverter switching. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on isolated auxiliary rail feeding MCU and gate drivers. Use Value: Responds in <1 ns to transients, limiting voltage excursions to protect 16 V-rated LDOs and logic-level MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A-E3/52 | Same VBR (209–231 V), but lower PPPM (400 W); RθJA = 110 °C/W; not AEC-Q101 qualified | Commercial-grade only; unsuitable for automotive under-hood use due to qualification gap and reduced surge margin | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary |
| 1.5SMC220A | Same VBR, higher VC (353 V @ 1.7 A); larger SMC (DO-214AB) package; RθJA = 85 °C/W; AEC-Q101 available in HM3 variant | Requires larger PCB area; better thermal performance but incompatible footprint; used where higher surge repetition is needed | Choose when board space allows SMC and thermal management demands lower RθJA than SMB permits |
Compared with SMAJ220A-E3/52 and 1.5SMC220A, SM6T220AHE3/52 uniquely balances AEC-Q101 qualification, SMB footprint compatibility, 600 W surge rating, and 328 V clamping-making it optimal for space-constrained automotive and industrial 24–48 V systems requiring certified reliability.
Availability
SM6T220AHE3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and full traceability.
Supply support for SM6T220AHE3/52 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, precision, and automotive-grade validation.
The SM6T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the breakdown voltage tolerance of SM6T220AHE3/52?
The SM6T220AHE3/52 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 250 V-rated components in automotive power systems. The SM6T220AHE3/52 maintains this specification under AEC-Q101 stress conditions.
Is SM6T220AHE3/52 suitable for automotive applications?
Yes, SM6T220AHE3/52 is AEC-Q101 qualified, as confirmed by its HE3 suffix and Vishay documentation. It meets stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). Its 150 °C maximum junction temperature, MSL Level 1 rating, and 260 °C reflow compatibility make SM6T220AHE3/52 appropriate for under-hood ECUs, ADAS camera modules, and body control units.
What is the maximum clamping voltage of SM6T220AHE3/52 at rated surge current?
The SM6T220AHE3/52 exhibits a maximum clamping voltage (VC) of 328 V when subjected to a 10/1000 μs waveform at 2.0 A peak pulse current (IPPM). This value is measured per Fig. 1 and Fig. 3 in Vishay document 88385 and reflects actual voltage seen by protected circuitry during standardized surge events. The clamping ratio (VC/VBR) is approximately 1.42, indicating efficient voltage limiting.
Does SM6T220AHE3/52 have polarity marking, and how is it identified?
Yes, SM6T220AHE3/52 is unidirectional and features a cathode band marking on the SMB package body. As stated in the mechanical data section, "for unidirectional types the band denotes cathode end." This band must be oriented toward the higher-potential side (e.g., 24 V rail), with the anode connected to ground or reference. No marking appears on bidirectional variants, but SM6T220AHE3/52 is explicitly unidirectional per its "A" suffix and datasheet table entry.
What is the thermal resistance of SM6T220AHE3/52, and how does it affect layout?
The SM6T220AHE3/52 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. This value assumes minimum recommended pad layout; reducing pad size increases RθJA, raising junction temperature under sustained power dissipation. For reliable 5.0 W continuous operation, designers must ensure adequate copper area and consider derating above 25 °C ambient using Fig. 2 in Vishay doc 88385.
SM6T220AHE3/52 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:
- Discontinued at Digi-Key
- 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 (SMBJ)
SM6T220AHE3/52 FAQ
1.How can I place an order for SM6T220AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHE3/52 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 SM6T220AHE3/52 reliable?
The price and inventory of SM6T220AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220AHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T220AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHE3/52?
SM6T220AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHE3/52 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 SM6T220AHE3/52?
For technical support, including SM6T220AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHE3/52 requirements.
6.How does Aetrix verify that SM6T220AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T220AHE3/52 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 SM6T220AHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T220AHE3/52?
All SM6T220AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHE3/52, 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 SM6T220AHE3/52 part is unused and in its original packaging.
Return procedure for SM6T220AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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