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Vishay General Semiconductor - Diodes Division SMCG90CAHE3/9AT
- Part No.:
- SMCG90CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG90CAHE3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,266
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Product details
Overview
SMCG90CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection in automotive and industrial electronics. It features a 90 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), clamping voltage of 146 V at 10.3 A IPPM, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SMCG90CAHE3/9AT datasheet, SMCG90CAHE3/9AT pinout, SMCG90CAHE3/9AT application, or SMCG90CAHE3/9AT equivalent, this device is selected for robust ESD and lightning surge protection on power rails and signal lines where bidirectional clamping, low leakage (<1.0 µA), and stable thermal performance up to 150 °C junction temperature are required.
Technical Context
The SMCG90CAHE3/9AT operates as a bidirectional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating circuits without polarity sensitivity. Its glass-passivated junction ensures stable VBR (100–111 V) and low incremental surge resistance, critical for consistent clamping during repetitive transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 75 °C/W junction-to-ambient thermal resistance and supports surge currents up to 10.3 A (10/1000 μs waveform) while maintaining clamping below 146 V - meeting IEC 61000-4-5 Level 4 requirements when properly laid out.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 100 V / 111 V - guaranteed breakdown range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 146 V - clamped voltage at 10.3 A peak pulse current, limiting downstream voltage stress |
| PPPM | 1500 W - peak surge power handling capability with 10/1000 μs waveform |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at rated stand-off, minimizing standby power loss |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile surface-mount case with matte tin-plated leads, UL 94 V-0 molding compound, and MSL level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | Bidirectional conduction path - no polarity marking; symmetric connection for AC or floating nodes |
| Cathode | Terminal K | Bidirectional conduction path - electrically identical to Anode; device has no functional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC signal paths without polarity constraints |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring long-term field stability |
| Glass-passivated junction | Ensures repeatable VBR tolerance and low parameter drift over temperature and lifetime |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive ICs |
| MSL Level 1 rating | Allows standard SMT reflow without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary TVS clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps surges to ≤146 V while dissipating 1500 W, preventing latch-up or gate oxide damage in downstream MOSFETs and PMICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended sensor lines interfacing with ADC inputs. Use Value: Sub-1 µA leakage preserves signal integrity; symmetrical clamping avoids DC offset in precision measurement paths. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to unshielded outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level surge suppressor after gas discharge tube (GDT) primary protection. Use Value: Fast response (<1 ns) and low VC limit induced voltage spikes to safe levels for 3.3 V/5 V transceiver I/O pins. | Use Scenario: Input-stage transient suppression in wall-mounted AC-DC adapters for smart home devices. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor input to absorb switching noise and line surges. Use Value: 90 V VWM matches typical 100 VDC rectified input; RoHS-compliant HE3 suffix meets global regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90CA | Lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (110 °C/W) | Suitable for lower-energy surges; less effective in high-temperature or high-power scenarios | Select SMAJ90CA only when board space is constrained and surge energy remains below 400 W |
| SMCJ90CA | Same PPPM (1500 W), larger SMC (DO-214AB) package, higher thermal mass, RθJA ≈ 50 °C/W | Better thermal performance but requires more PCB area; not AEC-Q101 qualified | Choose SMCJ90CA for non-automotive industrial use where layout space allows and AEC-Q101 is not mandated |
Compared with SMAJ90CA and SMCJ90CA, the SMCG90CAHE3/9AT uniquely combines AEC-Q101 qualification, DO-215AB footprint efficiency, and 1500 W surge capability - making it optimal for space-constrained automotive modules requiring certified reliability and high-energy clamping.
Availability
SMCG90CAHE3/9AT is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom line protection requiring stable component supply and full traceability.
Supply support for SMCG90CAHE3/9AT 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, and protection devices with emphasis on reliability and automotive-grade validation.
The SMCG series is engineered specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the breakdown voltage range for SMCG90CAHE3/9AT?
The SMCG90CAHE3/9AT has a guaranteed breakdown voltage (VBR) range of 100 V to 111 V at 1 mA test current, per the Vishay datasheet revision 09-Jan-2024. This defines the minimum and maximum voltage at which the device enters avalanche conduction in either direction, ensuring predictable clamping onset for bidirectional surge events.
Is SMCG90CAHE3/9AT suitable for automotive applications?
Yes, SMCG90CAHE3/9AT is AEC-Q101 qualified and manufactured with the HE3 suffix indicating RoHS compliance and automotive qualification. It is explicitly rated for operation from –55 °C to +150 °C junction temperature and validated for thermal cycling, humidity, and surge endurance - making it appropriate for engine control units, body electronics, and ADAS power domains.
What does the "CA" suffix mean in SMCG90CAHE3/9AT?
The "CA" suffix in SMCG90CAHE3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SMCG90A), it has no cathode marking and is used where polarity is undefined or alternating, such as across AC lines or differential signal pairs.
What is the maximum clamping voltage of SMCG90CAHE3/9AT at rated surge current?
The SMCG90CAHE3/9AT clamps to a maximum of 146 V at its rated peak pulse current (IPPM) of 10.3 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during standardized surge events.
Does SMCG90CAHE3/9AT require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W PPPM and thermal performance. Minimizing trace inductance and using solid ground/power planes adjacent to the SMCG90CAHE3/9AT improves clamping response and reduces voltage overshoot during fast transients.
SMCG90CAHE3/9AT 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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMCG90CAHE3/9AT FAQ
1.How can I place an order for SMCG90CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG90CAHE3/9AT 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 SMCG90CAHE3/9AT reliable?
The price and inventory of SMCG90CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG90CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG90CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG90CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG90CAHE3/9AT?
SMCG90CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG90CAHE3/9AT 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 SMCG90CAHE3/9AT?
For technical support, including SMCG90CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG90CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG90CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG90CAHE3/9AT 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 SMCG90CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG90CAHE3/9AT?
All SMCG90CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG90CAHE3/9AT, 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 SMCG90CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG90CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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