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Vishay General Semiconductor - Diodes Division SMCG9.0A-E3/9AT
- Part No.:
- SMCG9.0A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG9.0A-E3/9AT.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,229
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Product details
Overview
SMCG9.0A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - deployed in automotive sensor signal lines, industrial I/O ports, and power supply rail protection.
For engineers reviewing the SMCG9.0A-E3/9AT datasheet, SMCG9.0A-E3/9AT pinout, SMCG9.0A-E3/9AT application, or SMCG9.0A-E3/9AT equivalent, key selection criteria include clamping performance under 100 A surge, unidirectional polarity marking, AEC-Q101 qualification for automotive use, and compatibility with automated SMT placement on standard 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector, leveraging an avalanche breakdown mechanism to clamp transient voltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<10 µA at VWM) and low incremental surge resistance, enabling consistent response to repetitive ESD or load-switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation in high-temperature automotive engine compartments and industrial control enclosures without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 9 V nominal rails. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 15.4 V at 97.4 A - clamping voltage limits stress on protected circuitry during 10/1000 µs transients (e.g., ISO 7637-2 Pulse 1/2a). |
| PPPM | 1500 W - peak pulse power handling capacity supports high-energy surges common in 12 V automotive systems. |
| ID @ VWM | ≤10 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in battery-powered sensors. |
| TJ max. | +150 °C - enables deployment in under-hood automotive modules and industrial motor drives without derating. |
| Package | SMCG (DO-215AB) - low-profile, gull-wing surface-mount package optimized for automated assembly and meets UL 94 V-0 flammability. |
Pinout & Package
SMCG9.0A-E3/9AT uses the SMCG (DO-215AB) package: a 2-terminal, gull-wing leaded surface-mount outline with cathode band marking. The device has no internal pins; terminals are designated Anode and Cathode, with polarity indicated by a visible band at the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or lower-potential node in unidirectional TVS configuration. | Provides reference point for clamping action; must be routed with low-inductance path to ground plane for effective transient diversion. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., CAN_H, LIN, sensor output). | Defines directionality - only conducts during positive transients on protected line relative to ground; critical for correct orientation in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| Glass passivated junction | Ensures long-term reliability and stable electrical parameters under thermal cycling and humidity exposure (MSL Level 1). |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin for 3.3 V/5 V logic. |
| Matte tin plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, supporting lead-free reflow profiles up to 260 °C peak. |
| 1500 W peak pulse power | Handles high-energy transients such as ISO 16750-2 Load Dump (up to 35 V, 100 ms) when used with appropriate series impedance. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine management systems exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor signal line and chassis ground, clamping transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to 12-bit ADC inputs and op-amps by limiting voltage to ≤15.4 V during 100 A surges. |
Use Scenario: Safeguarding RS-485 transceiver data lines in programmable logic controllers subjected to lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SMCG9.0A-E3/9AT used in unidirectional rail-to-ground configuration on VCC-supplied side of isolated interface. Use Value: Maintains signal integrity by suppressing >1 kV transients while adding <1 pF junction capacitance - negligible impact on 10 Mbps data rates. |
| DC Power Rail Protection | Consumer Device USB Port Protection |
|
Use Scenario: Guarding 9 V DC input rails of industrial cameras and PoE-powered devices against reverse polarity connection and inductive kickback. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed immediately after input connector, upstream of DC-DC converter input stage. Use Value: Absorbs 1500 W surge energy without failure, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) testing. |
Use Scenario: Protecting USB 2.0 D+ and D- lines in portable medical monitors from ESD events during cable insertion and handling. IC Role / Device Role / Timing Role: Not recommended for differential data line protection due to unidirectional architecture; used instead on VBUS line for overvoltage backup. Use Value: Provides secondary VBUS clamping at 15.4 V to prevent damage to USB controller ICs when primary protection fails or is absent. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/57T | Same VWM (9.0 V) and VC (15.4 V), but lower PPPM (400 W); SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump or industrial surge testing. | Select when cost sensitivity outweighs surge rating needs and board space permits larger footprint. |
| SMCJ9.0A-E3/9AT | Identical VWM, VBR, and VC specs, but rated for 3000 W PPPM; same SMCG (DO-215AB) package and AEC-Q101 qualification. | Supports higher-energy threats (e.g., ISO 7637-2 Pulse 5a) without redesign; requires identical PCB layout. | Choose for enhanced robustness in safety-critical automotive modules where margin above 1500 W is required. |
Compared with SMAJ9.0A-E3/57T, SMCG9.0A-E3/9AT delivers double the thermal dissipation capability and superior surge immunity in the same automated-assembly footprint; versus SMCJ9.0A-E3/9AT, it trades 3000 W headroom for tighter cost and inventory control where 1500 W meets system-level test requirements.
Availability
SMCG9.0A-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and DC power rail safeguarding requiring stable component supply and full traceability.
Supply support for SMCG9.0A-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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMCG series was developed specifically for AEC-Q101-compliant transient suppression in space-constrained automotive and industrial environments, balancing high surge capability with low-profile SMT packaging and stable parametric performance.
FAQ
What is the clamping voltage of SMCG9.0A-E3/9AT at its rated peak pulse current?
The SMCG9.0A-E3/9AT has a maximum clamping voltage (VC) of 15.4 V at 97.4 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The SMCG9.0A-E3/9AT maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMCG9.0A-E3/9AT suitable for automotive applications?
Yes, SMCG9.0A-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS sensor interfaces. Its construction - glass-passivated junction, MSL Level 1 moisture sensitivity, matte tin leads, and -55 °C to +150 °C operating range - meets stringent automotive reliability requirements. The SMCG9.0A-E3/9AT appears in Vishay's automotive-grade ordering matrix with HE3/HM3 suffix variants, confirming its qualification status.
What does the "E3/9AT" suffix indicate in SMCG9.0A-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin plating; "9AT" specifies packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units. This differs from "57T" (7-inch reel, 850 units). The SMCG9.0A-E3/9AT shares identical electrical and thermal specifications with other SMCG9.0A variants - only packaging and qualification level vary across suffixes.
How does SMCG9.0A-E3/9AT differ from bidirectional TVS diodes like SMCG9.0CA?
SMCG9.0A-E3/9AT is unidirectional and features a cathode band for polarity identification, while SMCG9.0CA is bidirectional with no marking and symmetrical breakdown in both directions. Electrically, SMCG9.0A-E3/9AT has VBR = 10.0–11.1 V and is intended for rail-to-ground protection; SMCG9.0CA exhibits matched VBR in forward and reverse, making it suitable for AC line or differential signal protection. The SMCG9.0A-E3/9AT cannot substitute for SMCG9.0CA in bidirectional applications without circuit redesign.
What is the thermal resistance of SMCG9.0A-E3/9AT, and how does it affect layout?
The SMCG9.0A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W, measured on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve rated power dissipation, PCB layout must replicate this pad area and ensure uninterrupted thermal vias to inner ground planes. Reducing pad size increases junction temperature, potentially derating IPPM and shortening lifetime - a critical consideration for sustained surge duty cycles in the SMCG9.0A-E3/9AT design.
SMCG9.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97.4A
- 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)
SMCG9.0A-E3/9AT FAQ
1.How can I place an order for SMCG9.0A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG9.0A-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 SMCG9.0A-E3/9AT reliable?
The price and inventory of SMCG9.0A-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 SMCG9.0A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG9.0A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG9.0A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG9.0A-E3/9AT?
SMCG9.0A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG9.0A-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 SMCG9.0A-E3/9AT?
For technical support, including SMCG9.0A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG9.0A-E3/9AT requirements.
6.How does Aetrix verify that SMCG9.0A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG9.0A-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 SMCG9.0A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG9.0A-E3/9AT?
All SMCG9.0A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG9.0A-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 SMCG9.0A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG9.0A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG9.0A-E3/9AT Tags
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