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Vishay General Semiconductor - Diodes Division SMCG11CA-E3/57T
- Part No.:
- SMCG11CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG11CA-E3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,765
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Product details
Overview
SMCG11CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of signal and power lines. It features a 12.2 V minimum breakdown voltage (VBR), 11 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 18.2 V at 82.4 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG11CA-E3/57T datasheet, SMCG11CA-E3/57T pinout, SMCG11CA-E3/57T application, or SMCG11CA-E3/57T equivalent, this device is selected for high-energy surge suppression in automotive sensor interfaces, industrial I/O ports, and telecom line protection where bidirectional clamping, low clamping ratio, and MSL Level 1 solderability are required.
Technical Context
The SMCG11CA-E3/57T operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling protection against voltage transients regardless of polarity-critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
With a thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), it supports sustained power dissipation up to 6.5 W at 50 °C ambient when mounted on 8.0 mm × 8.0 mm copper pads. The device meets J-STD-020 MSL Level 1 and withstands peak reflow temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe working range for protected circuitry. |
| VBR (min) | 12.2 V - Minimum breakdown voltage at 1 mA test current; guarantees clamping activation above normal operating voltage. |
| VC @ IPPM | 18.2 V - Clamped voltage at 82.4 A peak pulse current (10/1000 µs); determines maximum voltage seen by downstream ICs during surge. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| Package | SMCG (DO-215AB) - Surface-mount, low-profile package with matte tin-plated leads; compatible with automated SMT placement and reflow. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, ADAS sensors, and body electronics per stress test requirements. |
Pinout & Package
SMCG11CA-E3/57T uses the SMCG (DO-215AB) surface-mount package: a dual-leaded, gull-wing configuration with no polarity marking for bidirectional devices. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional distinction between pins; either terminal serves as anode or cathode depending on transient polarity-enables single-device protection of AC or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of floating, AC-coupled, or differential signal lines (e.g., CAN, RS-485, sensor bridges) without polarity concerns. |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 16750-2) and inductive switching spikes in 12 V automotive systems. |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes overvoltage stress on protected ICs-critical for safeguarding 3.3 V or 5 V logic interfaces behind level-shifting circuits. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock-reduces qualification effort for Tier 1 suppliers. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak-eliminates moisture sensitivity handling requirements in production. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed at sensor connector interface to clamp ±100 V transients before they reach ADC input or signal conditioning op-amps. Use Value: Prevents latch-up or permanent damage to 12-bit SAR ADCs and rail-to-rail op-amps operating at 5 V supply, maintaining measurement integrity over 15-year vehicle lifetime. |
Use Scenario: Safeguarding 24 V digital input channels on PLC modules subjected to field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Primary surge suppression element across input terminals, upstream of optocoupler isolation and Schmitt-trigger conditioning. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) while preserving fast response (<1 ns) to maintain input state detection accuracy during transient events. |
| Telecom Line Interface | Consumer Device USB/UART Lines |
Use Scenario: Protecting RS-485 transceivers in base station backhaul links from lightning-induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping device connected across differential A/B bus lines, referenced to local ground via low-inductance layout. Use Value: Limits common-mode surge voltage to <20 V, preventing transceiver latch-up and ensuring >100,000 surge cycles without degradation per Telcordia GR-1089-CORE. |
Use Scenario: Adding secondary surge protection to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs exposed to user-handling ESD and adapter-induced transients. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) TVS placed immediately at board edge connector, before EMI filter and transceiver IC. Use Value: Maintains signal integrity up to 480 Mbps (USB 2.0) while passing IEC 61000-4-2 Level 4 (±15 kV contact) without bit errors or link resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11CA | Same VWM (11 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (18.2 V → 19.0 V at 20.9 A); SMA package (DO-214AC). | Not suitable for ISO 7637-2 Pulse 5a or high-current load dump; limited to lower-energy transients in consumer or non-automotive industrial use. | Select SMAJ11CA only when surge energy is ≤400 W and PCB space constraints favor smaller SMA footprint over SMCG's higher-power capability. |
| 1.5KE11CA | Higher PPPM (1500 W) and same VWM/VBR, but axial-leaded DO-201 package; no MSL rating or AEC-Q101 qualification. | Requires through-hole assembly and manual rework; unsuitable for automated SMT lines or automotive under-hood environments due to thermal and mechanical limitations. | Choose 1.5KE11CA only for prototyping or legacy through-hole designs where reflow compatibility and automotive qualification are not required. |
Compared with SMAJ11CA and 1.5KE11CA, SMCG11CA-E3/57T uniquely combines AEC-Q101 qualification, MSL Level 1 reflow compatibility, and full 1500 W surge capacity in a surface-mount DO-215AB package-making it the only option qualified for volume automotive SMT production with zero compromise on energy handling.
Availability
SMCG11CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom RS-485 line protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMCG11CA-E3/57T 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 high-reliability, automotive-qualified components.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in harsh environments-targeting automotive powertrain, ADAS, and industrial automation systems demanding AEC-Q101 validation and robust surge immunity.
FAQ
What is the clamping voltage of SMCG11CA-E3/57T at its rated peak pulse current?
The SMCG11CA-E3/57T has a maximum clamping voltage (VC) of 18.2 V at its peak pulse current (IPPM) of 82.4 A, measured under the standardized 10/1000 µs waveform. This value ensures downstream 5 V or 3.3 V ICs remain within safe operating limits during surge events. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C, as validated in Vishay's characterization data for SMCG11CA-E3/57T.
Is SMCG11CA-E3/57T suitable for automotive applications?
Yes, SMCG11CA-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use-including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 reflow compatibility up to 260 °C. These attributes make SMCG11CA-E3/57T appropriate for under-hood and cabin-mounted systems where reliability under thermal cycling and vibration is critical.
How does the bidirectional nature of SMCG11CA-E3/57T affect its circuit implementation?
Because SMCG11CA-E3/57T is bidirectional, it provides symmetrical clamping for both positive and negative transients-no polarity marking is present, and either lead may connect to either side of a differential or AC-coupled line. This eliminates orientation errors during placement and simplifies layout for interfaces like CAN, RS-485, or bridge-sensor outputs. Unlike unidirectional TVS diodes, SMCG11CA-E3/57T requires no external DC bias and functions identically regardless of signal polarity.
What is the thermal resistance of SMCG11CA-E3/57T, and how does it impact PCB layout?
SMCG11CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve rated 6.5 W power dissipation at 50 °C ambient, designers must replicate this pad area and ensure minimal thermal via count beneath the leads. Reduced copper area increases junction temperature and derates surge capability per Figure 2 in the SMCG11CA-E3/57T datasheet.
Does SMCG11CA-E3/57T require additional series impedance for optimal protection performance?
Yes, SMCG11CA-E3/57T should be used with a series current-limiting element-typically a resistor or ferrite bead-to manage let-through energy and prevent excessive peak current into the protected IC. While SMCG11CA-E3/57T clamps at 18.2 V, its low dynamic impedance means it conducts heavily once triggered; pairing it with 1–10 Ω series resistance (depending on line speed and surge source impedance) reduces di/dt stress and improves overall system immunity, especially for high-speed interfaces like USB or CAN FD.
SMCG11CA-E3/57T 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- 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)
SMCG11CA-E3/57T FAQ
1.How can I place an order for SMCG11CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG11CA-E3/57T 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 SMCG11CA-E3/57T reliable?
The price and inventory of SMCG11CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG11CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG11CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG11CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG11CA-E3/57T?
SMCG11CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG11CA-E3/57T 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 SMCG11CA-E3/57T?
For technical support, including SMCG11CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG11CA-E3/57T requirements.
6.How does Aetrix verify that SMCG11CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG11CA-E3/57T 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 SMCG11CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG11CA-E3/57T?
All SMCG11CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG11CA-E3/57T, 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 SMCG11CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG11CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG11CA-E3/57T Tags
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