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Vishay General Semiconductor - Diodes Division SMCG22AHE3/9AT
- Part No.:
- SMCG22AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG22AHE3/9AT.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,268
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Product details
Overview
SMCG22AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), clamping voltage of 35.5 V at 42.3 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG22AHE3/9AT datasheet, SMCG22AHE3/9AT pinout, SMCG22AHE3/9AT application, or SMCG22AHE3/9AT equivalent, this device is selected for high-energy surge suppression in automotive power lines, industrial sensor interfaces, and DC power rail protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG22AHE3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, delivering precise voltage clamping during transients induced by inductive switching or ESD events. Its bidirectional counterpart would use the "CA" suffix (e.g., SMCG22CA), but this part is explicitly unidirectional-cathode marked with band-and optimized for DC-biased circuits requiring polarity-aware protection.
It meets JESD22-B102 solderability standards, supports 260 °C peak reflow per J-STD-020, and exhibits 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads. The device sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and operates across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 35.5 V at 42.3 A - Clamping voltage under 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables survival of high-energy transients like ISO 7637-2 Pulse 5a. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive deployment without derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
| RθJA | 75 °C/W - Thermal resistance on standard PCB pad layout; informs heatsinking needs for sustained power dissipation. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with matte tin-plated terminals; meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration. |
| Cathode (banded end) | Current exit terminal; clamping node | Connected to protected line (e.g., 24 V supply rail); initiates avalanche conduction when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in harsh environments. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring long-term field reliability. |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without dry-pack or baking preconditioning prior to reflow. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., >1 kV/μs), improving protection margin for downstream ICs. |
| 1500 W peak pulse power | Supports compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) when used with appropriate series impedance. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 22 V while remaining inert during normal operation. Use Value: Limits peak voltage seen by MCU power pins to ≤35.5 V, preventing latch-up or oxide damage in automotive microcontrollers. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: Standoff-mode protector on signal lines subject to induced lightning surges or relay-switching noise. Use Value: Clamps transients within <1 ns while maintaining <1 μA leakage at 22 V, preserving sensor accuracy and offset stability. |
| DC Motor Drive Control | Telecom Power Supply Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors driving HVAC actuators or window lifters. IC Role / Device Role / Timing Role: Fast-acting shunt element across motor terminals or H-bridge outputs to absorb stored inductive energy. Use Value: Handles 200 A single-pulse surge (8.3 ms) without degradation, enabling compact motor driver designs without external snubbers. | Use Scenario: Input-stage surge protection for 48 V telecom rectifier modules exposed to AC mains transients and EMP events. IC Role / Device Role / Timing Role: Primary clamping device on DC input bus upstream of DC/DC converters and PMICs. Use Value: Delivers 1500 W pulse power handling with 35.5 V clamping, reducing downstream TVS staging and simplifying system-level surge compliance. |
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-E3/57T | Same VWM (22 V), lower PPPM (400 W), SMA (DO-214AC) package, no AEC-Q101 qualification | Rated for commercial/industrial use only; unsuitable for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification and surge energy requirements are ≤400 W. |
| SMCJ22AHE3/9AT | Same VWM (22 V), higher PPPM (3000 W), larger SMC (DO-214AB) package, identical AEC-Q101 qualification | Requires more PCB area but handles double the surge energy; better for ISO 16750-2 severe load dump scenarios | Select when system-level surge testing requires >1500 W margin or when legacy SMC footprint is fixed. |
Compared with SMAJ22A-E3/57T, SMCG22AHE3/9AT offers 275 % higher pulse power and automotive qualification; versus SMCJ22AHE3/9AT, it provides identical reliability in a 30 % smaller footprint but with half the energy rating-ideal for space-constrained AEC-Q101 designs where 1500 W suffices.
Availability
SMCG22AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and DC motor drive applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG22AHE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of SMCG22AHE3/9AT and how is it measured?
The SMCG22AHE3/9AT has a maximum clamping voltage (VC) of 35.5 V, measured at a peak pulse current (IPPM) of 42.3 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88457) and reflects the actual voltage imposed on the protected circuit during worst-case surge conditions. The SMCG22AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG22AHE3/9AT suitable for automotive applications?
Yes, SMCG22AHE3/9AT is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS modules. Its construction includes glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to +150 °C junction temperature-all verified per AEC stress test requirements. The SMCG22AHE3/9AT also meets JESD22-B102 solderability and JESD201 whisker resistance standards.
What does the "HE3" suffix mean in SMCG22AHE3/9AT?
The "HE3" suffix in SMCG22AHE3/9AT indicates RoHS-compliant construction with AEC-Q101 qualification (H = AEC-Q101, E3 = RoHS-compliant, industrial-grade plating). It distinguishes this variant from non-automotive versions like "E3" (RoHS, non-AEC-Q101) or "HM3" (halogen-free + AEC-Q101). The "9AT" denotes 13-inch tape-and-reel packaging with 3500 units per reel.
How does SMCG22AHE3/9AT differ from bidirectional TVS diodes like SMCG22CA?
SMCG22AHE3/9AT is unidirectional and features a cathode band for polarity-sensitive placement on DC lines; SMCG22CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SMCG22AHE3/9AT has lower leakage at VWM (1.0 μA vs. 1.0 μA for SMCG22CA at same VWM), but cannot protect AC-coupled or floating signal lines. Use SMCG22AHE3/9AT for 24 V supply rails; use SMCG22CA for differential data lines like RS-485.
What is the thermal resistance of SMCG22AHE3/9AT and how does it affect layout?
The SMCG22AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad size increases RθJA and risks thermal runaway during repetitive surges. For reliable operation at full 6.5 W steady-state dissipation, ensure adequate copper area and consider thermal vias beneath the leads. The SMCG22AHE3/9AT's RθJL is 15 °C/W, indicating efficient heat transfer to PCB traces.
SMCG22AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG22AHE3/9AT FAQ
1.How can I place an order for SMCG22AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG22AHE3/9AT 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 SMCG22AHE3/9AT reliable?
The price and inventory of SMCG22AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG22AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG22AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG22AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG22AHE3/9AT?
SMCG22AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG22AHE3/9AT 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 SMCG22AHE3/9AT?
For technical support, including SMCG22AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG22AHE3/9AT requirements.
6.How does Aetrix verify that SMCG22AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG22AHE3/9AT 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 SMCG22AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG22AHE3/9AT?
All SMCG22AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG22AHE3/9AT, 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 SMCG22AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG22AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG22AHE3/9AT Tags
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