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Vishay General Semiconductor - Diodes Division SMCG11CAHE3/9AT
- Part No.:
- SMCG11CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG11CAHE3/9AT.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,210
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Product details
Overview
SMCG11CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of signal and power lines. It features a 12.2 V minimum breakdown voltage (VBR), 11 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 18.2 V at 82.4 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG11CAHE3/9AT datasheet, SMCG11CAHE3/9AT pinout, SMCG11CAHE3/9AT application, or SMCG11CAHE3/9AT 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 reflow compatibility are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions - confirmed by specification notes stating "Electrical characteristics apply in both directions" and inclusion in the CA-suffix bidirectional table. Its glass-passivated junction ensures stable VBR tolerance (±10% typical), while the DO-215AB package provides low thermal resistance (RθJL = 15 °C/W) and supports automated placement per J-STD-020.
The device delivers fast response time (<1 ps), low incremental surge resistance, and meets UL 497B recognition (QVGQ2) for telecom protectors. Its 1500 W PPPM rating is validated on 8.0 mm × 8.0 mm copper pads, and derating curves confirm operational integrity up to TJ = 150 °C with full power capability at TA ≤ 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Ensures reliable turn-on during transients while avoiding false triggering under normal operation |
| VC @ IPPM | 18.2 V at 82.4 A - Clamped voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress level |
| PPPM | 1500 W - Peak surge energy absorption capacity; enables protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges |
| IPPM | 82.4 A - Maximum non-repetitive surge current supported without degradation; verified per Fig. 3 waveform |
| TJ max | 150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics use including engine control, ADAS sensors, and body modules |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | No functional polarity - either terminal serves as anode or cathode depending on transient polarity; eliminates orientation constraints during PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - simplifies protection design for AC-coupled or floating signal lines |
| AEC-Q101 qualification | Validated for automotive temperature cycling, mechanical shock, and humidity testing - enables use in safety-critical vehicle subsystems |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Stable VBR with ±10% tolerance and low leakage (<1 μA at VWM) - ensures consistent clamping behavior across production lots and lifetime |
| UL 497B recognition (QVGQ2) | Underwriters Laboratories listing for telecom protector classification - satisfies regulatory requirements for data line surge protection in certified equipment |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed between signal line and ground, absorbing transients before they reach MCU or transceiver inputs. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ESD events due to 18.2 V clamping and AEC-Q101 validation. |
Use Scenario: Safeguarding PLC digital input channels connected to field devices subject to inductive switching surges. IC Role / Device Role: Primary surge shunt on 24 V DC input lines, placed upstream of optocoupler or Schmitt trigger interface. Use Value: Withstands repeated 1500 W surges without parameter shift, enabling long-term reliability in factory automation environments. |
| Telecom Data Line Protection | Consumer USB/Display Interface Protection |
Use Scenario: Shielding RS-485, Ethernet PHY, or DSL line drivers from lightning-induced surges and AC power cross-talk. IC Role / Device Role: Secondary-level protector on differential pairs, used alongside primary gas discharge tubes or MOVs. Use Value: UL 497B recognition and symmetrical clamping ensure compliance with GR-1089-CORE and ITU-T K.21 standards. |
Use Scenario: Guarding HDMI, USB 2.0, or MIPI D-PHY lanes in automotive infotainment head units against ESD and cable discharge events. IC Role / Device Role: Low-capacitance (typ. <100 pF) TVS placed directly at connector entry point to minimize stub length. Use Value: Fast response (<1 ps) and 18.2 V clamping prevent latch-up or damage to high-speed interface ICs during human-body-model (HBM) discharges. |
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 VC (18.2 V), but lower PPPM (400 W) and smaller SMA (DO-214AC) package | Limited to lower-energy surges (IEC 61000-4-5 Level 2); not AEC-Q101 qualified | Select when cost or board space is prioritized over automotive qualification and high-energy surge immunity |
| 1.5KE11CA | Higher PPPM (1500 W), through-hole DO-201 package, same VWM/VC, but no AEC-Q101 or MSL Level 1 rating | Requires wave soldering; unsuitable for fully SMT automotive modules | Choose only for legacy through-hole designs where rework flexibility outweighs automated assembly needs |
Compared with SMAJ11CA and 1.5KE11CA, SMCG11CAHE3/9AT uniquely combines AEC-Q101 qualification, surface-mount DO-215AB packaging, and full 1500 W surge capability - making it the only option qualified for next-generation automotive and industrial SMT systems requiring zero rework risk and high-reliability surge immunity.
Availability
SMCG11CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCG11CAHE3/9AT 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 automotive-grade qualification.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and robust surge handling in compact packages.
FAQ
What is the clamping voltage of SMCG11CAHE3/9AT and how is it measured?
The clamping voltage (VC) of SMCG11CAHE3/9AT is 18.2 V, measured at its peak pulse current (IPPM) of 82.4 A using a standardized 10/1000 µs double-exponential surge waveform per ANSI/IEEE C62.35. This value represents the maximum voltage imposed on the protected circuit during worst-case transient events and is guaranteed across the full operating temperature range.
Is SMCG11CAHE3/9AT suitable for automotive applications?
Yes, SMCG11CAHE3/9AT is AEC-Q101 qualified and explicitly listed in Vishay's automotive-grade product documentation. Its construction - including glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to 150 °C junction temperature - meets requirements for engine control units, ADAS sensors, and body electronics where reliability under thermal and mechanical stress is mandatory.
Does SMCG11CAHE3/9AT have polarity markings on the package?
No, SMCG11CAHE3/9AT has no polarity markings because it is a bidirectional TVS diode. The SMCG (DO-215AB) package is symmetrical, and both terminals function identically regardless of applied voltage polarity - eliminating orientation errors during automated placement and simplifying PCB layout for AC or floating signal paths.
What is the thermal resistance of SMCG11CAHE3/9AT and why does it matter?
SMCG11CAHE3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. These values determine how effectively heat from surge dissipation is transferred away from the junction - critical for maintaining reliability during repetitive transients and ensuring operation within the 150 °C TJ limit.
How does the SMCG11CAHE3/9AT differ from unidirectional versions like SMCG11A?
SMCG11CAHE3/9AT is bidirectional with symmetrical breakdown and clamping in both directions, whereas SMCG11A is unidirectional with a cathode band marking and conducts only in reverse bias. The CA version supports AC-coupled or floating lines (e.g., RS-485, CAN), while the unidirectional variant suits DC-biased rails like 12 V power inputs - a fundamental functional distinction confirmed in Vishay's ordering table and electrical characteristics section.
SMCG11CAHE3/9AT 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG11CAHE3/9AT FAQ
1.How can I place an order for SMCG11CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG11CAHE3/9AT 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 SMCG11CAHE3/9AT reliable?
The price and inventory of SMCG11CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG11CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG11CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG11CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG11CAHE3/9AT?
SMCG11CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG11CAHE3/9AT 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 SMCG11CAHE3/9AT?
For technical support, including SMCG11CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG11CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG11CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG11CAHE3/9AT 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 SMCG11CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG11CAHE3/9AT?
All SMCG11CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG11CAHE3/9AT, 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 SMCG11CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG11CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG11CAHE3/9AT Tags
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