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Vishay General Semiconductor - Diodes Division SM6T220CAHM3/I
- Part No.:
- SM6T220CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHM3/I.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,669
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Product details
Overview
SM6T220CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and clamping voltage of 328 V at 2.0 A peak pulse current. It provides robust protection for automotive-grade sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SM6T220CAHM3/I datasheet, SM6T220CAHM3/I pinout, SM6T220CAHM3/I application, or SM6T220CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 188 V stand-off voltage, low thermal resistance (RθJL = 20 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities with identical VBR (209–231 V), VWM (188 V), and IPPM (2.0 A) specifications. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress.
Designed for surface-mount placement on 5.0 mm × 5.0 mm copper pads, it delivers 600 W pulse power handling with low inductance and meets MSL Level 1 (260 °C reflow peak). The device is qualified to AEC-Q101 and specified for operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - Ensures reliable conduction onset above 188 V operating voltage while maintaining margin against false triggering |
| VWM | 188 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 328 V @ 2.0 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - Peak transient energy absorption capacity under standardized 10/1000 μs waveform |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance enables effective heat transfer to PCB copper |
| TJ range | −65 °C to +150 °C - Supports automotive under-hood and industrial ambient environments |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" body length and matte tin leads |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with two unmarked terminals; bidirectional construction means no polarity marking required. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity - no fixed polarity assignment |
| Case / Body | Non-electrical mechanical interface | Insulated plastic housing providing creepage/clearance distance and UL 94 V-0 flammability rating |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant (HM3) | Meets JESD201 Class 2 whisker resistance and global environmental compliance requirements |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients from relay coil decay or motor commutation without degradation |
| Low inductance design | Minimizes voltage overshoot during fast-rising ESD or lightning-induced surges (tr < 1 ns typical) |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt surge energy. Use Value: Maintains signal integrity by limiting transient voltage to ≤328 V while surviving repeated 600 W pulses per AEC-Q101 stress test conditions. |
Use Scenario: Safeguarding IGBT/MOSFET gate drivers in variable-frequency drives from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Fast-response voltage clamp connected between gate and source/emitter to prevent overvoltage damage. Use Value: Enables reliable gate drive operation up to 150 °C junction temperature with 20 °C/W thermal resistance minimizing localized heating. |
| Telecom Line Interface Protection | Consumer Power Supply Input Protection |
Use Scenario: Shielding Ethernet PHY interfaces and DSL line cards from induced surges due to nearby lightning strikes or AC power cross-talk. IC Role / Device Role / Timing Role: Primary-level TVS placed at connector entry point to absorb bulk surge energy before reaching protection ICs. Use Value: Provides 600 W pulse rating with 188 V stand-off to avoid interference with normal 48 V DC bias while clamping >1 kV transients. |
Use Scenario: Guarding AC-DC adapter primary-side rectifier outputs and secondary-side 12/24 V rails against inrush and switching transients. IC Role / Device Role / Timing Role: Secondary-side transient suppressor mounted adjacent to downstream regulators or microcontrollers. Use Value: Halogen-free HM3 construction supports green manufacturing requirements without compromising 328 V clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VBR (220 V) and PPPM (400 W), but lower peak power rating and non-AEC-Q101 qualified | Limited to commercial-grade industrial or consumer systems without automotive qualification requirements | Select SMAJ220CA only when AEC-Q101 is not mandated and board space allows larger SMA footprint |
| 1.5KE220CA | Higher PPPM (1500 W), axial-leaded DO-201 package, no MSL rating or automotive qualification | Suitable for through-hole prototyping or legacy designs where reflow compatibility is not required | Choose 1.5KE220CA for higher surge margin in non-SMT assemblies; avoid in automated production or automotive programs |
Compared with SMAJ220CA and 1.5KE220CA, SM6T220CAHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, SMB surface-mount compatibility, and precise 328 V clamping-making it the optimal choice for volume automotive and industrial SMT deployments requiring traceable, qualified components.
Availability
SM6T220CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor controllers, telecom line interface circuits, and consumer power supply designs requiring stable component supply with full lifecycle support.
Supply support for SM6T220CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SM6T Series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments-emphasizing AEC-Q101 qualification, low-inductance packaging, and repeatable clamping performance across temperature.
FAQ
What does the "CA" suffix indicate in SM6T220CAHM3/I?
The "CA" suffix in SM6T220CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. This eliminates polarity concerns during PCB layout and enables use across differential signal lines or AC-coupled circuits where voltage polarity reverses. Unlike unidirectional variants (e.g., SM6T220A), SM6T220CAHM3/I has no cathode band marking and exhibits identical VBR, VC, and IPPM characteristics in either direction.
Is SM6T220CAHM3/I suitable for automotive applications?
Yes, SM6T220CAHM3/I is explicitly AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay documentation. It meets rigorous stress testing for temperature cycling, humidity, mechanical shock, and surge endurance required for automotive electronics. The device is rated for −65 °C to +150 °C junction temperature and supports under-hood and chassis-mounted applications such as engine control units, ADAS camera modules, and body electronics where transient immunity is critical.
What is the clamping voltage of SM6T220CAHM3/I at its rated peak pulse current?
The clamping voltage (VC) of SM6T220CAHM3/I is 328 V when subjected to its rated peak pulse current of 2.0 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and represents the maximum voltage imposed on the protected circuit during worst-case transient events. It ensures downstream components rated for ≤350 V operation remain within safe operating limits.
How does the HM3 suffix differ from E3 or M3 in SM6T220CAHM3/I?
The HM3 suffix in SM6T220CAHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification-distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). HM3 devices undergo additional automotive reliability testing and are marked with "HM3" in the ordering code. This makes SM6T220CAHM3/I appropriate for safety-critical automotive systems where both environmental compliance and qualification are mandatory.
What PCB pad layout is recommended for optimal thermal performance of SM6T220CAHM3/I?
Vishay specifies mounting SM6T220CAHM3/I on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal resistance values. The SMB package outline requires minimum pad dimensions of 0.086" (2.18 mm) width and 0.220" (5.59 mm) length per side. Adhering to this layout ensures proper heat dissipation, maintains RθJL = 20 °C/W, and prevents derating of surge capability due to inadequate copper area.
SM6T220CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T220CAHM3/I FAQ
1.How can I place an order for SM6T220CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHM3/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 SM6T220CAHM3/I reliable?
The price and inventory of SM6T220CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM6T220CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHM3/I?
SM6T220CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHM3/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 SM6T220CAHM3/I?
For technical support, including SM6T220CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHM3/I requirements.
6.How does Aetrix verify that SM6T220CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHM3/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 SM6T220CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM6T220CAHM3/I?
All SM6T220CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHM3/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 SM6T220CAHM3/I part is unused and in its original packaging.
Return procedure for SM6T220CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHM3/I Tags
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Diodes Incorporated
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