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Vishay General Semiconductor - Diodes Division SM6T220CAHE3_A/I
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- Part No.:
- SM6T220CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHE3_A/I.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
SM6T220CAHE3_A/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 at 2.0 A IPPM. It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces operating up to 150 °C junction temperature.
For engineers reviewing the SM6T220CAHE3_A/I datasheet, SM6T220CAHE3_A/I pinout, SM6T220CAHE3_A/I application, or SM6T220CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.49), MSL Level 1 moisture sensitivity, 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 within nanoseconds to transients exceeding its 188 V stand-off voltage (VWM). Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior across temperature.
The device delivers symmetrical clamping in both directions due to its bidirectional CA construction, with thermal resistance RθJA = 100 °C/W enabling reliable operation under pulsed stress without heatsinking when mounted per recommended pad layout.
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 worst-case surge |
| PPPM | 600 W - peak transient power dissipation capability under standardized surge waveform |
| TJ max. | +150 °C - maximum junction temperature supporting automotive under-hood deployment |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm height, optimized for high-density PCB layouts |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Reference terminal for unidirectional types; not marked on bidirectional SM6T220CAHE3_A/I | No polarity marking - terminals are functionally symmetric for bidirectional clamping |
| Anode | Reference terminal for unidirectional types; not marked on bidirectional SM6T220CAHE3_A/I | Both terminals behave identically - voltage clamping occurs regardless of transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges on 12 V/24 V systems |
| AEC-Q101 qualification | Validated for automotive use including engine control units, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at sensor connector or MCU input pin. Use Value: Clamps transients to ≤328 V while maintaining <1.0 μA leakage at 188 V, preserving signal integrity and sensor accuracy. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines against ESD and coupled surges in factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) providing symmetrical clamping without polarity constraints. Use Value: Matches CAN bus voltage swing (±12 V) with 188 V stand-off, ensuring no interference during normal operation while suppressing >1 kV transients. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Front-end surge suppression on 48 V DC power inputs of PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: Handles 600 W pulses without degradation, with thermal resistance enabling sustained operation at +85 °C ambient. | Use Scenario: Overvoltage protection for USB-C CC and VBUS lines in portable docking stations subject to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Secondary-level clamp after primary fuse or eFuse, limiting fault voltage to safe levels for Type-C controller ICs. Use Value: 220 V VBR avoids false triggering during normal 20 V PD negotiation while clamping miswired events to ≤328 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 |
|---|---|---|---|
| SMAJ220CA | Same VBR (209–231 V), lower PPPM = 400 W, SMA package (larger footprint, higher RθJA) | Limited to lower-energy transients; less suitable for automotive load dump per ISO 7637-2 Pulse 5a | Select SMAJ220CA only if board space allows larger SMA and surge energy is below 400 W requirement |
| 1.5KE220CA | Higher PPPM = 1500 W, axial DO-201AD package, non-SMT, higher inductance | Not compatible with automated SMT assembly; unsuitable for high-frequency transient suppression due to lead inductance | Choose 1.5KE220CA only for through-hole prototyping or legacy repair where rework tolerance outweighs performance loss |
Compared with SMAJ220CA and 1.5KE220CA, SM6T220CAHE3_A/I offers optimal balance of 600 W surge handling, SMB SMT compatibility, AEC-Q101 qualification, and low-profile packaging-making it the preferred choice for production automotive and industrial PCBs requiring validated reliability and automated manufacturability.
Availability
SM6T220CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, telecom power supplies, and consumer USB-C docking stations requiring stable component supply and long-term lifecycle support.
Supply support for SM6T220CAHE3_A/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, efficiency, and application-specific optimization.
The SM6T Series is designed specifically for surface-mount transient voltage suppression in harsh environments-including automotive, industrial, and telecom-where AEC-Q101 qualification, low clamping voltage, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of SM6T220CAHE3_A/I at its rated peak pulse current?
The SM6T220CAHE3_A/I has a maximum clamping voltage (VC) of 328 V when subjected to a 10/1000 μs waveform peak pulse current (IPPM) of 2.0 A. This value is measured per Figure 1 in the Vishay datasheet 88385 and reflects the actual voltage seen by protected circuitry during standardized surge events. The clamping performance remains symmetrical in both directions due to its bidirectional CA construction. SM6T220CAHE3_A/I maintains this specification across its full operating temperature range.
Is SM6T220CAHE3_A/I qualified for automotive applications?
Yes, SM6T220CAHE3_A/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T series datasheet (Rev. 09-Jan-2024, Doc. #88385). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22-A114. The device is intended for automotive subsystems such as body control modules, ADAS sensor interfaces, and infotainment power rails where reliability under thermal and electrical stress is critical. SM6T220CAHE3_A/I meets these requirements without derating.
What does the "CA" suffix indicate in SM6T220CAHE3_A/I?
The "CA" suffix in SM6T220CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T220A), SM6T220CAHE3_A/I has no cathode/anode marking and clamps equally for positive and negative transients. This eliminates polarity concerns during layout and simplifies design for AC-coupled or floating signal paths. The "CA" designation is standardized across Vishay's SM6T family and applies specifically to SM6T220CAHE3_A/I per its ordering code and datasheet table.
What is the maximum operating temperature for SM6T220CAHE3_A/I?
The SM6T220CAHE3_A/I has a maximum junction temperature (TJ) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay's datasheet 88385. Its thermal resistance RθJA is 100 °C/W under standard mounting conditions (0.2" × 0.2" copper pads), allowing reliable operation at ambient temperatures up to +85 °C in typical PCB layouts. Derating curves in Figure 2 confirm continued functionality at elevated temperatures, making SM6T220CAHE3_A/I suitable for under-hood automotive applications. This rating applies to the full lifetime of SM6T220CAHE3_A/I under specified surge conditions.
How does SM6T220CAHE3_A/I differ from SM6T220A?
SM6T220CAHE3_A/I is bidirectional (CA), while SM6T220A is unidirectional (no CA suffix). This means SM6T220CAHE3_A/I clamps symmetrically for both positive and negative transients and has no polarity marking, whereas SM6T220A requires correct cathode orientation and only clamps in reverse bias. Both share identical VBR, VWM, and PPPM, but SM6T220CAHE3_A/I is required for AC signal lines or floating buses like CAN or RS-485. The HE3 suffix confirms AEC-Q101 qualification for SM6T220CAHE3_A/I, which is not guaranteed for standard SM6T220A variants unless explicitly ordered with HE3/HM3.
SM6T220CAHE3_A/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:
- 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 (SMBJ)
SM6T220CAHE3_A/I FAQ
1.How can I place an order for SM6T220CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHE3_A/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 SM6T220CAHE3_A/I reliable?
The price and inventory of SM6T220CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T220CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHE3_A/I?
SM6T220CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHE3_A/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 SM6T220CAHE3_A/I?
For technical support, including SM6T220CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHE3_A/I requirements.
6.How does Aetrix verify that SM6T220CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHE3_A/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 SM6T220CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T220CAHE3_A/I?
All SM6T220CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHE3_A/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 SM6T220CAHE3_A/I part is unused and in its original packaging.
Return procedure for SM6T220CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHE3_A/I Tags
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