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Vishay General Semiconductor - Diodes Division SM6T220CAHE3_B/I
- Part No.:
- SM6T220CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHE3_B/I.pdf
- Description:
- 600W,220V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,859
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Product details
Overview
SM6T220CAHE3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 220 V breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 2.0 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T220CAHE3_B/I datasheet, SM6T220CAHE3_B/I pinout, SM6T220CAHE3_B/I application, or SM6T220CAHE3_B/I equivalent, key selection considerations include bidirectional clamping capability, low clamping ratio (1.49), RoHS-compliant and halogen-free construction, and suitability for high-reliability automotive sensor protection where fast response and stable junction temperature up to +150 °C are required.
Technical Context
The SM6T220CAHE3_B/I operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at 188 V) across -65 °C to +150 °C operating range.
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it delivers 600 W peak pulse power with minimal inductance and thermal resistance (RθJA = 100 °C/W), supporting robust surge handling on compact PCB layouts using standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA - defines reliable avalanche initiation threshold with ±5% tolerance for predictable clamping onset |
| VWM | 188 V - maximum continuous reverse stand-off voltage before leakage exceeds 1.0 μA, setting safe operating margin below VBR |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - actual clamped voltage during worst-case surge, determining protected circuit's maximum stress level |
| PPPM | 600 W - peak transient energy absorption capacity under standardized 10/1000 μs waveform, critical for inductive load switching immunity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments without derating |
| Package | SMB (DO-214AA) - surface-mount outline with 2.2 mm height and 3.94 mm length, compatible with automated placement and J-STD-020 MSL Level 1 reflow |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, and no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional conduction path | No designated anode or cathode; terminals interchangeable - enables placement without orientation check on PCB |
| Terminal 1 / Terminal 2 | Transient current path | Both terminals conduct identically during positive or negative transients - eliminates need for directional routing in differential or AC lines |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy transients from relay coil decay or motor commutation without thermal runaway |
| Clamping ratio (VC/VBR) ≈ 1.49 | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VWM for stable DC bias operation |
| AEC-Q101 qualified (HE3 suffix) | Confirms compliance with automotive stress tests including 1000-cycle temperature cycling and 1000-hour HTRB at 150 °C |
| Low RθJA = 100 °C/W | Supports sustained 5.0 W power dissipation at 50 °C ambient when mounted on recommended 5.0 mm × 5.0 mm copper pads |
| MSL Level 1 (260 °C peak) | Permits single-reflow assembly without moisture sensitivity concerns, eliminating bake requirements pre-soldering |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions within IC absolute maximum ratings. Use Value: Maintains signal integrity during 12 V system load dump events (up to 120 V, 400 ms) by clamping at ≤328 V while surviving >1000 surges per AEC-Q101. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Standoff-connected TVS across input terminals to shunt transients before reaching optocoupler or MCU GPIO pins. Use Value: Prevents false triggering and latch-up in industrial control systems by limiting transient voltage to <330 V with sub-1 ns response time and <1.0 μA leakage at 188 V. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on line-side interface, coordinated with secondary GDT or MOV for staged surge suppression. Use Value: Absorbs 600 W peak energy per IEC 61000-4-5 (10/1000 μs) while maintaining <330 V clamping to preserve PHY receiver common-mode range. |
Use Scenario: Adding secondary-side surge immunity to USB-C and barrel-jack power inputs in smart home hubs and audio devices. IC Role / Device Role / Timing Role: Final-stage clamping device after primary fuse and common-mode choke, protecting DC-DC controller ICs from ESD and fast transients. Use Value: Delivers certified IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) protection with zero impact on steady-state efficiency due to <1.0 μA leakage at rated VWM. |
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 (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 limited to <400 W (e.g., consumer USB ports) |
| 1.5KE220CA | Same VBR, higher PPPM (1500 W), axial DO-201 package (through-hole, manual assembly only) | Requires PCB real estate and assembly process change; not suitable for automated SMT lines | Choose for legacy designs or high-energy industrial mains protection where SMT is not feasible |
Compared with SMAJ220CA and 1.5KE220CA, the SM6T220CAHE3_B/I uniquely combines AEC-Q101 qualification, SMB SMT compatibility, 600 W rating, and bidirectional symmetry-making it the optimal choice for new automotive and industrial SMT designs requiring production scalability and automotive-grade reliability.
Availability
SM6T220CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply with full traceability and lifecycle management.
Supply support for SM6T220CAHE3_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 qualification.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping voltage, and repeatable surge performance are mandatory.
FAQ
What is the clamping voltage of SM6T220CAHE3_B/I at its rated peak pulse current?
The SM6T220CAHE3_B/I has a maximum clamping voltage (VC) of 328 V when subjected to a 2.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88385 and defines the upper voltage limit imposed on protected circuits during surge events. The SM6T220CAHE3_B/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is SM6T220CAHE3_B/I suitable for automotive applications?
Yes, the SM6T220CAHE3_B/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T datasheet (Rev. 09-Jan-2024). It undergoes rigorous automotive stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD verification. The SM6T220CAHE3_B/I is explicitly recommended for engine control units, body electronics, and ADAS sensor protection where load dump and ISO 7637-2 compliance are required.
What does the "CA" suffix indicate in SM6T220CAHE3_B/I?
The "CA" suffix in SM6T220CAHE3_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 SM6T220CAHE3_B/I has no polarity marking and functions identically regardless of terminal orientation-ideal for AC lines, differential buses like CAN or RS-485, and floating signal paths.
What is the maximum steady-state power dissipation of SM6T220CAHE3_B/I?
The SM6T220CAHE3_B/I has a maximum steady-state power dissipation (PD) of 5.0 W when mounted on an infinite heatsink at TA = 50 °C. Under standard PCB conditions (0.2" × 0.2" copper pads per terminal), derating applies per Figure 2 in the datasheet; at 70 °C ambient, usable power drops to approximately 3.5 W. This rating governs continuous leakage-based heating, not transient surge handling.
How does the SMB package of SM6T220CAHE3_B/I compare to SMA in terms of thermal performance?
The SMB (DO-214AA) package used by SM6T220CAHE3_B/I offers lower thermal resistance than SMA: RθJA = 100 °C/W versus ~140 °C/W for SMA packages like SMAJ220CA. This 40 °C/W improvement allows the SM6T220CAHE3_B/I to sustain higher average power or operate at elevated ambient temperatures without exceeding TJ = 150 °C, making it preferable for thermally dense automotive and industrial PCB layouts.
SM6T220CAHE3_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)
SM6T220CAHE3_B/I FAQ
1.How can I place an order for SM6T220CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHE3_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 SM6T220CAHE3_B/I reliable?
The price and inventory of SM6T220CAHE3_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 SM6T220CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T220CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHE3_B/I?
SM6T220CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHE3_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 SM6T220CAHE3_B/I?
For technical support, including SM6T220CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHE3_B/I requirements.
6.How does Aetrix verify that SM6T220CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHE3_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 SM6T220CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T220CAHE3_B/I?
All SM6T220CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHE3_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 SM6T220CAHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T220CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220CAHE3_B/I Tags
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