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Vishay General Semiconductor - Diodes Division SMCG22CA-E3/9AT
- Part No.:
- SMCG22CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG22CA-E3/9AT.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,765
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Product details
Overview
SMCG22CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and power lines. It features a 24.4 V to 26.9 V breakdown voltage (VBR) at 10 mA, 22 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 35.5 V at 42.3 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG22CA-E3/9AT datasheet, SMCG22CA-E3/9AT pinout, SMCG22CA-E3/9AT application, or SMCG22CA-E3/9AT equivalent, this device serves as a high-reliability, surface-mount TVS for bidirectional surge suppression in automotive sensor interfaces, industrial I/O ports, and telecom line protection where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG22CA-E3/9AT operates as a symmetrical avalanche diode with identical electrical characteristics in both directions, enabling single-device protection of AC-coupled or differential signal paths. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 µA at 22 V), while its low incremental surge resistance supports effective energy diversion during ESD and lightning-induced transients.
Thermally, it delivers 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads and sustains operation from –55 °C to +150 °C. The device meets JESD201 Class 2 whisker resistance and is rated for 200 A unidirectional surge current - though not applicable here due to bidirectional configuration - confirming robust transient handling capability under defined test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before significant leakage; defines safe working range for protected circuitry |
| VBR (min/max) | 24.4 V / 26.9 V at 10 mA - precise symmetric breakdown threshold ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | 35.5 V at 42.3 A - clamping voltage limits downstream voltage stress during 1500 W transient surges |
| PPPM | 1500 W (10/1000 µs) - peak surge power rating defining transient energy absorption capacity |
| Junction Temp Range | –55 °C to +150 °C - enables deployment in under-hood automotive, industrial control, and outdoor telecom environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
| Package | SMCG (DO-215AB) - low-profile SMD outline with gull-wing leads, compatible with automated placement and 260 °C reflow |
Pinout & Package
SMCG22CA-E3/9AT uses the SMCG (DO-215AB) surface-mount package: a symmetrical, bidirectional device with no polarity marking; both terminals are electrically identical and interchangeable. The package features matte tin-plated gull-wing leads solderable per J-STD-002 and JESD22-B102, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal may serve as anode or cathode depending on instantaneous polarity; no functional distinction |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for dual-diode configurations in AC or differential lines |
| AEC-Q101 Qualification | Validated for automotive electronics - supports deployment in ADAS sensors, body control modules, and infotainment without additional qualification effort |
| Low Clamping Ratio | VC/VWM = 1.61 - minimizes voltage overshoot during transients, protecting 24 V-rated ICs and MOSFETs |
| MSL Level 1 Rating | Rated for unlimited floor life and peak reflow up to 260 °C - simplifies manufacturing flow and eliminates baking requirements |
| Glass Passivation | Stable junction characteristics over time and temperature - ensures long-term VBR consistency in harsh environments |
Applications
| Automotive Sensor Protection | Industrial Fieldbus Interface |
|---|---|
Use Scenario: Protecting LIN, CAN FD, or SENT signal lines in engine control units and battery management systems from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended data lines to limit transient excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or gate oxide damage in transceivers by clamping spikes to ≤35.5 V while maintaining signal integrity via low capacitance (<100 pF at 0 V). | Use Scenario: Safeguarding RS-485/RS-422 transceivers in PLC backplanes and motor drives exposed to inductive switching noise and ground bounce. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS mounted at connector entry points to shunt surge energy before reaching communication ICs. Use Value: Enables reliable operation at 22 V common-mode range with 1500 W surge immunity, meeting IEC 61000-4-5 Level 3 (1 kV/2 Ω) requirements. |
| Telecom DSL Line Protection | Consumer Appliance Power Input |
Use Scenario: Protecting ADSL/VDSL line interface circuits from lightning-induced surges entering via telephone wiring. IC Role / Device Role / Timing Role: Primary protection device placed before hybrid transformers and line drivers to absorb longitudinal-mode transients. Use Value: Withstands repeated 10/1000 µs surges up to 42.3 A while maintaining <1.0 µA leakage at 22 V - preserving low-noise analog performance. | Use Scenario: Overvoltage safeguard on 24 V DC input rails of smart home hubs, HVAC controllers, and white goods control boards. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and MOV, providing precise clamping and fast response for sensitive microcontrollers and PMICs. Use Value: Delivers 35.5 V clamping at full 1500 W rating - ensures downstream 3.3 V/5 V logic remains within safe operating area during 24 V rail faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same VWM (22 V) and VC (35.5 V), but lower PPPM (400 W) and SMA (DO-214AC) package with higher RθJA (110 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select SMAJ22CA only for cost-sensitive, non-automotive applications with verified lower surge exposure. |
| 1.5KE22CA | Higher PPPM (1500 W) but axial DO-15 package; no AEC-Q101 qualification; larger footprint and manual assembly requirement | Not suitable for automated SMT lines or space-constrained PCBs; requires through-hole layout and wave soldering | Choose 1.5KE22CA only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ22CA and 1.5KE22CA, SMCG22CA-E3/9AT uniquely combines AEC-Q101 qualification, DO-215AB SMT compatibility, and full 1500 W surge rating - making it the only option qualified for production automotive electronics requiring zero layout change and guaranteed reflow robustness.
Availability
SMCG22CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial fieldbus nodes, telecom line cards, and consumer appliance power inputs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG22CA-E3/9AT 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in automotive and industrial environments - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent bidirectional performance across temperature.
FAQ
What is the breakdown voltage tolerance for SMCG22CA-E3/9AT?
The SMCG22CA-E3/9AT has a specified breakdown voltage (VBR) range of 24.4 V to 26.9 V at 10 mA test current, corresponding to a ±5% tolerance around the nominal 22 V standoff voltage. This tight tolerance ensures predictable clamping behavior across production lots and temperature extremes from –55 °C to +150 °C, and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2.
Is SMCG22CA-E3/9AT suitable for automotive applications?
Yes, SMCG22CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use per Vishay documentation. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, and is deployed in engine control units, ADAS sensors, and body electronics. Its DO-215AB package supports lead-free reflow up to 260 °C, and its bidirectional symmetry protects differential bus lines like LIN and SENT without polarity concerns.
What is the maximum clamping voltage of SMCG22CA-E3/9AT under surge conditions?
The maximum clamping voltage (VC) of SMCG22CA-E3/9AT is 35.5 V at a peak pulse current (IPPM) of 42.3 A, measured using the standardized 10/1000 µs waveform. This value reflects worst-case voltage seen by downstream circuitry during a full 1500 W transient event and is critical for ensuring protected ICs remain within their absolute maximum ratings - especially for 24 V system transceivers and microcontrollers.
Does SMCG22CA-E3/9AT have polarity markings on the package?
No, SMCG22CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking on the SMCG (DO-215AB) package. Both terminals are functionally identical, and the device provides symmetrical clamping in either direction. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or differential signal paths - unlike unidirectional variants (e.g., SMCG22A) which feature a cathode band.
What is the thermal resistance of SMCG22CA-E3/9AT under standard mounting conditions?
The SMCG22CA-E3/9AT 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, as specified in the Vishay datasheet. This value assumes standard FR-4 PCB construction and is essential for calculating junction temperature rise under continuous power dissipation (PD = 6.5 W) or estimating safe surge repetition rates in thermally constrained designs.
SMCG22CA-E3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG22CA-E3/9AT FAQ
1.How can I place an order for SMCG22CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG22CA-E3/9AT 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 SMCG22CA-E3/9AT reliable?
The price and inventory of SMCG22CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG22CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG22CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG22CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG22CA-E3/9AT?
SMCG22CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG22CA-E3/9AT 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 SMCG22CA-E3/9AT?
For technical support, including SMCG22CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG22CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG22CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG22CA-E3/9AT 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 SMCG22CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG22CA-E3/9AT?
All SMCG22CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG22CA-E3/9AT, 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 SMCG22CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG22CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG22CA-E3/9AT Tags
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