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Vishay General Semiconductor - Diodes Division SM6T220CAHM3_A/H
- Part No.:
- SM6T220CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHM3_A/H.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,115
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Product details
Overview
SM6T220CAHM3_A/H 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 328 V maximum clamping voltage at 2.0 A IPPM. It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T220CAHM3_A/H datasheet, SM6T220CAHM3_A/H pinout, SM6T220CAHM3_A/H application, or SM6T220CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, halogen-free RoHS compliance, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding to transients exceeding its 188 V stand-off voltage (VWM) by avalanche conduction in both directions. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM).
Designed for automotive-grade reliability, SM6T220CAHM3_A/H meets AEC-Q101 stress test requirements and features MSL Level 1 moisture sensitivity with 260 °C lead-free reflow capability. Thermal performance is characterized by RθJA = 100 °C/W (typ.) and TJmax = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA IT - defines precise avalanche onset window for predictable clamping threshold |
| 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 limiting transient energy delivered to protected circuit |
| PPPM | 600 W - peak surge power handling capacity under standardized lightning-surge waveform |
| TJmax | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance supporting reliable power dissipation without heatsink |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; conducts during positive or negative overvoltage events |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or rail during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power domains |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 for green manufacturing and high-reliability assembly |
| 600 W peak pulse rating | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 10/1000 μs surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes let-through voltage to protect downstream 200 V-rated MOSFETs and analog front-ends |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without baking or special handling in high-volume SMT lines |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure sensors from load-dump and inductive switching transients in 24 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across signal line and ground, activating within nanoseconds when VIN exceeds ±188 V. Use Value: Limits transient voltage to ≤328 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 200 V DC input rails in industrial motor drives and PLC power supplies against 1 kV surge events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing surge energy before it reaches bulk capacitors and gate drivers. Use Value: 600 W rating and 20 °C/W RθJL enable repeated surge handling without thermal runaway under derated conditions. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level protection on secondary-side DC outputs, coordinated with GDT and MOV stages. Use Value: Symmetrical bidirectional clamping ensures equal response to common-mode and differential surges up to 220 V RMS. | Use Scenario: Securing microcontroller GPIOs and relay driver outputs in washing machine control boards exposed to relay coil kickback. IC Role / Device Role / Timing Role: Localized TVS mounted directly at connector or relay terminals to minimize inductance. Use Value: Low-inductance SMB package and 328 V clamping prevent voltage overshoot beyond MCU absolute maximum ratings (±36 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA-T | Same VBR (209–231 V), identical SMB package, but rated for 600 W with 1.0 ms pulse; no AEC-Q101 qualification | Commercial/industrial use only; not approved for automotive production | Select SMBJ220CA-T where AEC-Q101 is not required and cost optimization is prioritized |
| 1.5KE220CA | Higher PPPM (1500 W), DO-201 package (larger footprint), higher VC (356 V), unidirectional/bidirectional variants available | Requires PCB redesign due to axial leaded TO-201 package; suited for high-energy legacy designs | Choose 1.5KE220CA only when surge energy exceeds 600 W and board space allows larger through-hole mounting |
Compared with SMBJ220CA-T and 1.5KE220CA, SM6T220CAHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint-making it the only drop-in solution for new automotive electronics requiring zero layout change and full compliance traceability.
Availability
SM6T220CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial power supplies, telecom line interfaces, and consumer appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for SM6T220CAHM3_A/H 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 was developed specifically for high-reliability transient suppression in automotive and industrial environments, balancing compact SMB packaging with AEC-Q101 validation and robust 600 W surge capability.
FAQ
What is the breakdown voltage tolerance for SM6T220CAHM3_A/H?
The SM6T220CAHM3_A/H has a specified breakdown voltage range of 209 V to 231 V at 1.0 mA test current (IT), per Vishay's datasheet revision 09-Jan-2024. This ±5% tolerance ensures consistent clamping behavior across production lots and supports design margining for 220 V nominal systems. The value is measured using a 300 μs square-wave pulse, and the device maintains this specification under AEC-Q101 stress conditions.
Is SM6T220CAHM3_A/H suitable for 24 V automotive power line protection?
Yes, SM6T220CAHM3_A/H is appropriate for protecting 24 V automotive power lines against load dump and ISO 7637-2 transients, provided it is used downstream of primary suppression (e.g., with a 36 V TVS or regulator). Its 188 V stand-off voltage (VWM) prevents conduction during normal operation, while its 328 V clamping voltage limits energy delivered to 200 V-rated downstream components. AEC-Q101 qualification confirms suitability for under-hood deployment.
Does SM6T220CAHM3_A/H have polarity markings on the package?
No, SM6T220CAHM3_A/H does not feature polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SM6T220A), the CA suffix indicates symmetrical avalanche characteristics in both directions, eliminating the need for cathode band identification. This simplifies PCB layout and eliminates orientation errors during automated placement.
What is the maximum clamping voltage of SM6T220CAHM3_A/H at 10/1000 μs waveform?
The maximum clamping voltage (VC) of SM6T220CAHM3_A/H is 328 V when subjected to a 10/1000 μs surge waveform at an IPPM of 2.0 A, as confirmed in the Electrical Characteristics table of Vishay document 88385. This value represents worst-case let-through voltage under standardized surge testing and is critical for verifying compatibility with protected ICs' absolute maximum voltage ratings.
How does the HM3 suffix affect the environmental compliance of SM6T220CAHM3_A/H?
The HM3 suffix in SM6T220CAHM3_A/H denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance. It replaces lead-based solder finishes with matte tin plating and excludes brominated flame retardants from the molding compound-ensuring compliance with automotive OEM material declarations (e.g., GMW3059, Ford WSS-M99P9999-A1) and EU RoHS Directive 2011/65/EU Annex II.
SM6T220CAHM3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for SM6T220CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHM3_A/H 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_A/H reliable?
The price and inventory of SM6T220CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T220CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHM3_A/H?
SM6T220CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHM3_A/H 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_A/H?
For technical support, including SM6T220CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHM3_A/H requirements.
6.How does Aetrix verify that SM6T220CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHM3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SM6T220CAHM3_A/H?
All SM6T220CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHM3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SM6T220CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHM3_A/H Tags
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