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Vishay General Semiconductor - Diodes Division SM6T220CAHE3/52
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- Part No.:
- SM6T220CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHE3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,670
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Product details
Overview
SM6T220CAHE3/52 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 - used to protect automotive sensor signal lines and power rails against ESD and load dump transients.
For engineers reviewing the SM6T220CAHE3/52 datasheet, SM6T220CAHE3/52 pinout, SM6T220CAHE3/52 application, or SM6T220CAHE3/52 equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 188 V stand-off voltage (VWM), low clamping ratio (1.49×VWM), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both forward and reverse directions, with identical VBR (209–231 V), VWM (188 V), and VC (328 V @ 2.0 A) specifications. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress.
Designed for surface-mount use in SMB (DO-214AA) package, it delivers low-inductance clamping with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - defines reliable conduction onset across production lot; ensures consistent clamping initiation above 188 V operating voltage |
| VWM | 188 V - maximum continuous reverse stand-off voltage; sets safe operating margin below breakdown threshold |
| VC @ IPPM | 328 V @ 2.0 A (10/1000 μs) - limits protected circuit voltage during worst-case surge; clamping ratio = 1.74×VWM |
| PPPM | 600 W - peak pulse power handling per JEDEC standard waveform; enables robust protection against ISO 7637-2 Pulse 1/2a/5a |
| TJ max. | +150 °C - maximum junction temperature; supports under-hood automotive deployment without derating at 125 °C ambient |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking; matte tin-plated leads, RoHS-compliant and whisker-tested per JESD 201 Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either direction; symmetrical conduction eliminates need for orientation during placement |
| Cathode | Transient current exit point (bidirectional) | Completes low-inductance path to ground or rail; terminals are functionally interchangeable due to bidirectional design |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional suppression | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse rating | Withstands automotive load dump surges (ISO 16750-2) and inductive switching transients in 12 V/24 V systems |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and body control modules |
| Low clamping inductance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD per IEC 61000-4-2) |
| SMB (DO-214AA) package | Supports high-density PCB layouts and automated pick-and-place; meets UL 94 V-0 flammability rating |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground to shunt transient energy before reaching sensitive input stages. Use Value: Maintains signal integrity by limiting voltage excursions to ≤328 V during 2.0 A 10/1000 μs surges, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Safeguarding 24 V DC power inputs in programmable logic controllers (PLCs) and motor drives against inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input rail and chassis ground, activated only during overvoltage events. Use Value: Absorbs up to 600 W of surge energy without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity requirements. |
| Telecom Line Interface Protection | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485/RS-232 interface circuits in base stations and network equipment from ESD and induced surges on long cable runs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential pair lines, minimizing signal distortion while providing fast response (<1 ns). Use Value: Clamps transients within nanoseconds while maintaining <10 pF junction capacitance at zero bias, preserving signal rise time and data integrity up to 10 Mbps. | Use Scenario: Securing microcontroller I/O pins and relay driver circuits in washing machines, HVAC controls, and smart home hubs against user-induced ESD and relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS at board-level interfaces to absorb human-body-model (HBM) ESD strikes up to ±15 kV. Use Value: Prevents firmware lockup or reset glitches by limiting transient voltage to ≤328 V at the MCU pin, meeting IEC 61000-4-2 Level 4 (8 kV contact) requirements. |
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) and PPPM (400 W), but lower peak power rating and SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; not qualified to AEC-Q101 | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom |
| 1.5KE220CA | Higher PPPM (1500 W), through-hole DO-201 package, VBR 209–231 V, but no AEC-Q101 qualification and incompatible with SMT assembly | Suitable for prototyping or legacy through-hole designs; unsuitable for high-volume automotive SMT lines | Choose only for manual assembly or where board space allows larger footprint and higher surge margin is critical |
Compared with SMAJ220CA and 1.5KE220CA, SM6T220CAHE3/52 uniquely combines AEC-Q101 qualification, 600 W SMT-rated surge capability, and SMB footprint - making it the preferred choice for production automotive and industrial electronics requiring traceable, qualified, and automated-compatible TVS protection.
Availability
SM6T220CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and telecom line interface applications requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for SM6T220CAHE3/52 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 performance.
The SM6T Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, precise clamping, and SMT manufacturability are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T220CAHE3/52?
The "CA" suffix denotes a bidirectional configuration: SM6T220CAHE3/52 conducts and clamps symmetrically in both forward and reverse directions, unlike unidirectional variants (e.g., SM6T220A). This eliminates polarity marking and simplifies layout for AC-coupled or floating signal paths. The device has no cathode band marking, distinguishing it physically from unidirectional types.
Is SM6T220CAHE3/52 qualified for automotive applications?
Yes, SM6T220CAHE3/52 is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation (Vishay Doc. #88385, Rev. 09-Jan-2024). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements - making it suitable for engine control, ADAS, and body electronics in passenger and commercial vehicles.
What is the maximum clamping voltage of SM6T220CAHE3/52 and at what current is it specified?
The maximum clamping voltage (VC) of SM6T220CAHE3/52 is 328 V, measured at a peak pulse current (IPPM) of 2.0 A using the standard 10/1000 μs double-exponential waveform. This value ensures predictable voltage limiting during surge events and is verified per JEDEC test conditions with 5.0 mm × 5.0 mm copper pads.
How does the SMB (DO-214AA) package of SM6T220CAHE3/52 compare to SMA in size and thermal performance?
SM6T220CAHE3/52 uses the SMB (DO-214AA) package - slightly larger than SMA (DO-214AC) - with typical thermal resistance RθJA = 100 °C/W (vs. ~140 °C/W for SMAJ series). Its larger pad area improves heat dissipation and surge endurance, supporting higher reliability in sustained transient environments compared to smaller-outline alternatives.
Can SM6T220CAHE3/52 be used in place of a unidirectional TVS like SM6T220A?
No - SM6T220CAHE3/52 is bidirectional and lacks polarity marking, while SM6T220A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating grounds; unidirectional is required for DC-biased rails where reverse conduction must be blocked. Their VBR, VWM, and VC values match, but polarity behavior differs fundamentally.
SM6T220CAHE3/52 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 (SMBJ)
SM6T220CAHE3/52 FAQ
1.How can I place an order for SM6T220CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHE3/52 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 SM6T220CAHE3/52 reliable?
The price and inventory of SM6T220CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T220CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHE3/52?
SM6T220CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHE3/52 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 SM6T220CAHE3/52?
For technical support, including SM6T220CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHE3/52 requirements.
6.How does Aetrix verify that SM6T220CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHE3/52 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 SM6T220CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T220CAHE3/52?
All SM6T220CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHE3/52, 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 SM6T220CAHE3/52 part is unused and in its original packaging.
Return procedure for SM6T220CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHE3/52 Tags
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