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Vishay General Semiconductor - Diodes Division SM6T220CAHM3_B/I
- Part No.:
- SM6T220CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHM3_B/I.pdf
- Description:
- 600W,220V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,789
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Product details
Overview
SM6T220CAHM3_B/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 328 V maximum clamping voltage (VC) at 2.0 A IPPM. It protects sensitive signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T220CAHM3_B/I datasheet, SM6T220CAHM3_B/I pinout, SM6T220CAHM3_B/I application, or SM6T220CAHM3_B/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB package thermal data, and direct alternative part comparisons for robust overvoltage protection design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical VBR (209–231 V), VWM (188 V), and IPPM-dependent clamping behavior. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low dynamic impedance under surge conditions.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads compliant with JESD 22-B102, and supports 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 stand-off without premature triggering |
| VWM | 188 V - Maximum continuous reverse voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 328 V @ 2.0 A (10/1000 μs) - Limits transient voltage seen by protected ICs to safe levels |
| PPPM | 600 W - Sustains high-energy surges typical of automotive load-dump or inductive kick events |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-ambient industrial settings |
| RθJA | 100 °C/W - Requires minimum 5.0 mm × 5.0 mm copper pad per terminal for thermal derating compliance |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band absent per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | Conducts surge current into device during positive transients; symmetrical with Cathode |
| Cathode | Transient current entry point (negative polarity) | Conducts surge current into device during negative transients; symmetrical with Anode |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in 12 V/24 V automotive systems without degradation |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs and interface ICs |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive environmental standards and enables use in green manufacturing processes |
| MSL Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow, supporting standard SMT production flow |
| Low inductance SMB package | Reduces voltage overshoot during fast-rising transients (e.g., ESD > 1 ns rise time) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 10/1000 μs transients up to 600 W while operating within AEC-Q101 automotive reliability requirements. | Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Standoff voltage clamp across 24 V DC I/O lines, activated only during overvoltage events exceeding 188 V. Use Value: Prevents latch-up and permanent damage to microcontroller GPIOs and optocoupler drivers during repetitive inductive switching. |
| Telecom Power Rail Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment (e.g., IP cameras, wireless access points) subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response bidirectional TVS placed between VOUT and GND to clamp differential-mode transients on DC distribution lines. Use Value: Clamps to ≤328 V within nanoseconds, limiting stress on DC-DC converters and Ethernet PHYs per IEC 61000-4-5 Level 3. | Use Scenario: Input-stage transient suppression in universal-input AC/DC adapters (90–264 VAC) where secondary-side 12–24 V rails require robustness against mains-borne surges. IC Role / Device Role / Timing Role: Standby protection device across low-voltage output rails, activated only during abnormal line disturbances or rectifier recovery spikes. Use Value: Provides 600 W surge handling without forward conduction during normal operation, preserving efficiency and thermal budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VBR range (209–231 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load-dump per ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with smaller pads |
| 1.5KE220CA | Higher PPPM = 1500 W, axial DO-201 package; VC = 355 V @ 4.2 A; not surface-mount | Requires through-hole assembly; incompatible with automated SMT lines; better for high-power legacy designs | Choose for prototyping or low-volume builds where manual assembly is acceptable and higher surge margin is critical |
Compared with SMAJ220CA and 1.5KE220CA, SM6T220CAHM3_B/I uniquely combines AEC-Q101 qualification, SMB SMT compatibility, 600 W capability, and halogen-free construction-making it optimal for volume automotive and industrial PCBs requiring zero rework and full compliance traceability.
Availability
SM6T220CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power supplies, and consumer adapter designs requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for SM6T220CAHM3_B/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SM6T Series is engineered specifically for high-reliability transient suppression in harsh environments-targeting automotive electronics, industrial controls, and telecom infrastructure where consistent clamping performance and long-term stability under thermal cycling are mandatory.
FAQ
What is the clamping voltage of SM6T220CAHM3_B/I at its rated peak pulse current?
The SM6T220CAHM3_B/I has a maximum clamping voltage (VC) of 328 V when subjected to a 10/1000 μs waveform at IPPM = 2.0 A. This value is measured per Figure 1 in Vishay document 88385 and defines the upper voltage limit imposed on protected circuitry during a standardized surge event. The SM6T220CAHM3_B/I maintains this clamping performance across its qualified operating temperature range.
Is SM6T220CAHM3_B/I suitable for automotive applications?
Yes, SM6T220CAHM3_B/I is AEC-Q101 qualified (indicated by the HM3 suffix and "_B/I" tape-and-reel packaging), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness per AEC-Q101 Rev G. The SM6T220CAHM3_B/I is explicitly listed in Vishay's automotive-grade ordering codes.
What does the "CA" suffix mean in SM6T220CAHM3_B/I?
The "CA" suffix in SM6T220CAHM3_B/I denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T220A), the SM6T220CAHM3_B/I has no polarity marking and conducts identically in either direction, enabling simplified layout for AC-coupled or differential signal protection.
What is the standoff voltage rating for SM6T220CAHM3_B/I?
The standoff voltage (VWM) for SM6T220CAHM3_B/I is 188 V-this is the maximum continuous reverse voltage the device can block without exceeding 1.0 μA leakage current at 25 °C. It ensures the SM6T220CAHM3_B/I remains non-conductive during normal operation while allowing rapid response to transients exceeding this threshold.
Does SM6T220CAHM3_B/I require special PCB layout considerations?
Yes, SM6T220CAHM3_B/I requires minimum 5.0 mm × 5.0 mm copper pads per terminal (per Vishay document 88385, Note 2) to achieve rated thermal performance and sustain 600 W peak pulse power. Smaller pads increase RθJA, causing excessive junction temperature rise and potential failure. Trace inductance should also be minimized-keep connections short and wide-to preserve low-inductance advantage of the SMB package.
SM6T220CAHM3_B/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:
- Active
- 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:
- Telecom
- 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_B/I FAQ
1.How can I place an order for SM6T220CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHM3_B/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_B/I reliable?
The price and inventory of SM6T220CAHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SM6T220CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHM3_B/I?
SM6T220CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHM3_B/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_B/I?
For technical support, including SM6T220CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHM3_B/I requirements.
6.How does Aetrix verify that SM6T220CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SM6T220CAHM3_B/I?
All SM6T220CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SM6T220CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHM3_B/I Tags
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