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Vishay General Semiconductor - Diodes Division SM6T220AHM3/I
- Part No.:
- SM6T220AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHM3/I.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,388
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Product details
Overview
SM6T220AHM3/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 IPPM, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualified for automotive applications. It protects MOSFETs and sensor signal lines against inductive switching transients.
For engineers reviewing the SM6T220AHM3/I datasheet, SM6T220AHM3/I pinout, SM6T220AHM3/I application, or SM6T220AHM3/I equivalent, key selection factors include its 188 V stand-off voltage (VWM), 1.0 μA max reverse leakage at VWM, halogen-free RoHS-compliant construction, and MSL Level 1 moisture sensitivity rating.
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 inductance for fast response to 10/1000 μs surge waveforms.
The SM6T220AHM3/I is thermally characterized with RθJA = 100 °C/W and RθJL = 20 °C/W, supports 150 °C maximum junction temperature, and is rated for 100 A non-repetitive forward surge current (IFSM) under 10 ms half-sine conditions - confirming suitability for high-energy automotive load-dump protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates |
| 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) - clamping voltage seen by protected circuit during rated surge |
| PPPM | 600 W - peak transient power dissipation capability without failure |
| IFSM | 100 A - single half-sine surge current handling (10 ms), critical for automotive load-dump immunity |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standard |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground in typical unidirectional TVS configuration | Low-impedance path for surge current return; requires low-inductance PCB grounding |
| Cathode (banded end) | Protected line connection point; reverse-biased during normal operation | Connected to the line being protected (e.g., sensor supply rail); clamps when voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per JESD22 standards |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements and JEDEC JESD201 Class 2 whisker resistance |
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 surges |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs during transient events |
| MSL Level 1 rating | Enables direct placement without baking; supports standard SMT reflow profiles up to 260 °C peak |
Applications
| Automotive Load-Dump Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V power rails in engine control units (ECUs) during alternator load-dump events per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤328 V while dissipating 600 W, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems from ESD and switching noise. IC Role / Device Role / Timing Role: Point-of-entry protection on 0–5 V or 4–20 mA signal paths before ADC inputs. Use Value: Maintains signal integrity with <1.0 μA leakage at 188 V stand-off, ensuring minimal offset error in precision measurement circuits. |
| Telecom Power Supply Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding AC/DC adapter outputs in base station power modules exposed to lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Secondary-side TVS on +48 V telecom distribution bus upstream of POL converters. Use Value: Clamps 10/1000 μs surges within 1 ns response time, limiting voltage overshoot to protect GaN FET gate drivers. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Flyback suppression across motor terminals, connected anode-to-ground, cathode-to-motor+. Use Value: Withstands 100 A IFSM, absorbs repetitive inductive kickback without degradation, extending motor driver lifespan. |
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-E3/5B | Same VBR range (209–231 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W), lower PPPM = 400 W | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5SMC220AHE3_A/H | Same VBR, larger SMC package, PPPM = 1500 W, RθJA = 60 °C/W, AEC-Q101 qualified | Better thermal performance and surge margin; requires larger PCB area | Choose for higher-reliability industrial or commercial designs needing >600 W headroom |
Compared with SMAJ220A-E3/5B, SM6T220AHM3/I offers higher surge rating and automotive qualification in a compact SMB package; versus 1.5SMC220AHE3_A/H, it trades some power margin for smaller size and identical AEC-Q101 compliance - ideal for space-constrained automotive ECUs.
Availability
SM6T220AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drives requiring stable component supply and long-term lifecycle support.
Supply support for SM6T220AHM3/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-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of the SM6T220AHM3/I under a 10/1000 μs surge?
The SM6T220AHM3/I 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 official Vishay datasheet (Doc. #88385) and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the SM6T220AHM3/I suitable for automotive applications?
Yes, the SM6T220AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with whisker-resistant plating. Its 150 °C maximum junction temperature, 100 A IFSM, and validated performance under temperature cycling and humidity testing confirm suitability for under-hood and body-control module applications.
What does the "HM3" suffix mean in SM6T220AHM3/I?
The "HM3" suffix in SM6T220AHM3/I denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, and AEC-Q101 qualification. The "I" indicates packaging in 13-inch tape-and-reel (3200 units per reel), per Vishay's ordering nomenclature in Document #88385.
What is the stand-off voltage (VWM) of the SM6T220AHM3/I?
The SM6T220AHM3/I has a stand-off voltage (VWM) of 188 V - the maximum DC or continuous reverse voltage that can be applied without exceeding 1.0 μA leakage current. This parameter ensures reliable blocking during normal operation while allowing rapid transition into clamping mode during overvoltage events.
Does the SM6T220AHM3/I have polarity marking, and how is it oriented?
Yes, the SM6T220AHM3/I is unidirectional and features a cathode band (dark stripe) on the SMB package body. When installed, the banded end connects to the line being protected (e.g., +24 V rail), and the opposite end (anode) connects to ground - consistent with standard TVS placement for positive-going transients.
SM6T220AHM3/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):
- 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/I FAQ
1.How can I place an order for SM6T220AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHM3/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/I reliable?
The price and inventory of SM6T220AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SM6T220AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHM3/I?
SM6T220AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHM3/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/I?
For technical support, including SM6T220AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHM3/I requirements.
6.How does Aetrix verify that SM6T220AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6T220AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SM6T220AHM3/I?
All SM6T220AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHM3/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/I part is unused and in its original packaging.
Return procedure for SM6T220AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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