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Vishay General Semiconductor - Diodes Division SM6T22AHE3_A/I
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- Part No.:
- SM6T22AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T22AHE3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,788
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Product details
Overview
SM6T22AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V maximum clamping voltage (VC) at 20 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines, MOSFET gate drivers, and industrial I/O interfaces.
For engineers reviewing the SM6T22AHE3_A/I datasheet, SM6T22AHE3_A/I pinout, SM6T22AHE3_A/I application, or SM6T22AHE3_A/I equivalent, key selection considerations include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.33), 1.0 μA max reverse leakage at 18.8 V stand-off, and compatibility with automated SMT placement on standard SMB footprints.
Technical Context
The SM6T22AHE3_A/I operates as a unidirectional avalanche diode with cathode-band polarity marking, designed to clamp transient overvoltages before they damage downstream ICs or power switches. Its glass-passivated junction ensures stable breakdown characteristics and low leakage across -65 °C to +150 °C operating range.
It delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 5.0 mm × 5.0 mm copper pads, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation in thermally constrained automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 18.8 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 20.0 A (10/1000 μs) - clamping voltage limiting stress on protected circuit during surge |
| PPPM | 600 W - peak transient energy absorption capability per single event without failure |
| IR @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity and battery life in always-on systems |
| TJ Range | -65 °C to +150 °C - supports under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., sensor output, MCU input); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables suppression of ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems without derating |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or oxide damage in protected ICs |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced popcorn failure or delamination |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over time and temperature |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors in engine bay modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output pin and ground to shunt transients before reaching ADC input or signal conditioner. Use Value: Clamps 30.6 V at 20 A while maintaining ≤1.0 μA leakage at 18.8 V, preserving sensor accuracy and enabling AEC-Q101-compliant design. | Use Scenario: Safeguarding RS-485/RS-232 transceiver data lines in factory automation PLCs subjected to EFT and surge per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected line-to-ground on differential bus lines to limit common-mode surges without affecting signal integrity. Use Value: 600 W pulse rating and 100 °C/W RθJA allow sustained protection in enclosed enclosures without active cooling. |
| MOSFET Gate Driver Protection | Consumer Power Supply Input |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in DC-DC converters from Miller-induced voltage spikes and shoot-through risks. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS placed between gate and source to clamp dv/dt-induced overshoot during switching transitions. Use Value: 20.9–23.1 V VBR aligns with typical 24 V gate drive rails; 30.6 V VC prevents gate oxide breakdown during 10/1000 μs transients. | Use Scenario: Secondary-side transient suppression on 5 V/12 V rails powering microcontrollers and memory in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Low-leakage TVS installed at point-of-load to absorb ESD events and capacitive coupling noise from USB/USB-C ports. Use Value: RoHS-compliant, halogen-free HE3 suffix meets consumer safety standards; 1.0 μA leakage avoids standby current degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same SMB package, 22 V VBR, but 400 W PPPM and non-AEC-Q101 qualified | Limited to commercial-grade industrial or consumer use; not validated for automotive temperature cycling or HTRB | Select SMAJ22A only if AEC-Q101 compliance is unnecessary and cost sensitivity outweighs surge margin |
| SMCJ22A | Higher 1500 W PPPM, same VBR and VC, but larger SMC (DO-214AB) package | Requires PCB layout change; suitable where higher surge immunity is needed and space permits | Choose SMCJ22A when system-level testing requires >600 W immunity or longer pulse durations beyond 10/1000 μs |
Compared with SMAJ22A and SMCJ22A, the SM6T22AHE3_A/I uniquely balances AEC-Q101 qualification, 600 W surge capacity, and SMB footprint-making it optimal for space-constrained automotive modules where reliability and manufacturability are co-prioritized.
Availability
SM6T22AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and MOSFET gate driver safeguarding requiring stable component supply across production lifecycles.
Supply support for SM6T22AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SM6T Series was engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping behavior, AEC-Q101 validation, and SMT-ready packaging for automated manufacturing.
FAQ
What is the breakdown voltage tolerance of SM6T22AHE3_A/I?
The SM6T22AHE3_A/I has a specified breakdown voltage range of 20.9 V to 23.1 V at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 22 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting sensitive 24 V logic interfaces without false triggering.
Is SM6T22AHE3_A/I compatible with lead-free reflow soldering?
Yes, SM6T22AHE3_A/I meets MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free reflow profiles. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the molding compound satisfies UL 94 V-0 flammability requirements.
Does SM6T22AHE3_A/I have automotive qualification?
Yes, SM6T22AHE3_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, validating suitability for automotive powertrain, chassis, and body electronics.
What is the maximum clamping voltage for SM6T22AHE3_A/I under surge conditions?
The SM6T22AHE3_A/I has a maximum clamping voltage (VC) of 30.6 V at 20.0 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions on 5.0 mm × 5.0 mm copper pads and represents the upper voltage limit imposed on protected circuits during worst-case transient events.
How does the leakage current of SM6T22AHE3_A/I compare to similar TVS diodes?
At its 18.8 V stand-off voltage (VWM), SM6T22AHE3_A/I exhibits ≤1.0 μA maximum reverse leakage current at 25 °C-comparable to industry-leading SMB TVS devices. This low leakage preserves battery life in always-on automotive modules and avoids signal distortion in high-impedance sensor interfaces, outperforming many legacy 600 W TVS parts with 5–10 μA leakage.
SM6T22AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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)
SM6T22AHE3_A/I FAQ
1.How can I place an order for SM6T22AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T22AHE3_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 SM6T22AHE3_A/I reliable?
The price and inventory of SM6T22AHE3_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 SM6T22AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T22AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T22AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T22AHE3_A/I?
SM6T22AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T22AHE3_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 SM6T22AHE3_A/I?
For technical support, including SM6T22AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T22AHE3_A/I requirements.
6.How does Aetrix verify that SM6T22AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T22AHE3_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 SM6T22AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T22AHE3_A/I?
All SM6T22AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T22AHE3_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 SM6T22AHE3_A/I part is unused and in its original packaging.
Return procedure for SM6T22AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T22AHE3_A/I Tags
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