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Vishay General Semiconductor - Diodes Division SMCG90A-E3/9AT
- Part No.:
- SMCG90A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG90A-E3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
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Product details
Overview
SMCG90A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in the SMCG (DO-215AB) package, featuring a 90 V stand-off voltage (VWM), 100–111 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamping voltage of 146 V at 10.3 A IPPM. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial power electronics.
For engineers reviewing the SMCG90A-E3/9AT datasheet, SMCG90A-E3/9AT pinout, SMCG90A-E3/9AT application, or SMCG90A-E3/9AT equivalent, this device is selected for high-energy surge suppression where AEC-Q101 qualification, low incremental surge resistance, and fast response time (<1 ns) are critical - especially in 12 V/24 V DC systems with IFSM up to 200 A and TJ max of 150 °C.
Technical Context
The SMCG90A-E3/9AT uses an avalanche diode structure with glass-passivated junction for stable, repeatable clamping under repetitive 10/1000 µs surge waveforms. Its unidirectional polarity enables integration into DC-biased rails without reverse conduction concerns, and its DO-215AB package supports automated placement while meeting UL 94 V-0 flammability requirements.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to 150 °C junction temperature when mounted on 8.0 mm × 8.0 mm copper pads. The device complies with ANSI/IEEE C62.35 and is rated for non-repetitive surge pulses per Figure 3, with derating above TA = 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for protection. |
| VBR (min/max) | 100 V / 111 V at IT = 1.0 mA - Confirmed breakdown threshold range ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 146 V at 10.3 A - Clamping voltage under 10/1000 µs surge defines worst-case stress on downstream components. |
| PPPM | 1500 W - Peak pulse power rating determines survivability against standardized lightning/inductive transients. |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount gull-wing leaded package with matte tin-plated terminals, compliant with J-STD-002 solderability and JESD22-B102 whisker testing (Class 2). Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H); cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference in unidirectional configuration | Enables standard DC rail protection topology where TVS shunts surge current to ground when Vreverse > VBR. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line or supply rail | Defines polarity-sensitive placement - incorrect orientation disables clamping function and risks catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring long-term reliability under thermal and mechanical stress. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift, critical for industrial outdoor deployments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin for sensitive gate drivers. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| UL 94 V-0 molding compound | Meets fire-safety requirements for enclosed power supplies, battery management systems, and EV charging infrastructure. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 24 V CAN bus power rails and LIN transceivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp transients exceeding 90 V while maintaining low leakage during normal operation. Use Value: Prevents latch-up or destruction of transceiver ICs during ISO 16750-2 load dump tests (up to 35 V sustained, 60 V peak) and ISO 7637-2 pulses. |
Use Scenario: Input-stage surge suppression for 3-phase IGBT gate driver power supplies in variable-frequency drives. IC Role / Device Role / Timing Role: Standoff-rated TVS on +15 V auxiliary supply rail to absorb coupling transients from adjacent high-dV/dt switching nodes. Use Value: Limits clamped voltage to ≤146 V, ensuring gate driver ICs remain within absolute maximum ratings during 1500 W surge events. |
| Telecom Base Station DC Feeds | Consumer Appliance Control Boards |
Use Scenario: Secondary-side protection on -48 V telecom rectifier outputs exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed at rectifier output to divert induced common-mode energy before it reaches PMICs and microcontrollers. Use Value: Withstands 10/1000 µs surges up to 10.3 A while holding leakage below 1.0 µA, preserving efficiency and noise floor in always-on monitoring circuits. |
Use Scenario: Overvoltage protection for microcontroller I/O pins connected to external sensors in washing machine control modules. IC Role / Device Role / Timing Role: Localized TVS on analog input traces (e.g., temperature, water level) to suppress ESD and relay coil kickback. Use Value: Fast <1 ns response and 146 V clamping prevent latch-up of 3.3 V/5 V MCUs during 8 kV contact ESD events per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/57T | Same VWM (90 V) and PPPM (400 W), but lower 400 W rating and SMA (DO-214AC) package with higher RθJA (100 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump or industrial motor drive surge classes. | Select only for cost-sensitive consumer applications where 1500 W capability is unnecessary and board space allows larger SMA footprint. |
| SMCJ90A-E3/9AT | Same VWM (90 V), higher PPPM (3000 W), and identical DO-214AB package but with 1.5× higher clamping voltage (156 V @ 19.3 A). | Higher clamping increases stress on protected ICs; requires tighter voltage margins downstream. | Choose when system-level surge test levels exceed 1500 W (e.g., IEC 61000-4-5 Level 4) and layout accommodates same footprint. |
Compared with SMAJ90A-E3/57T and SMCJ90A-E3/9AT, the SMCG90A-E3/9AT delivers optimal balance of high-energy handling (1500 W), low clamping (146 V), and AEC-Q101 qualification in a compact DO-215AB package - making it preferred for automotive and industrial designs where reliability and space constraints coexist.
Availability
SMCG90A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, telecom DC feeds, and consumer appliance control boards requiring stable component supply and full traceability.
Supply support for SMCG90A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCG series was developed for high-power transient suppression in space-constrained, high-reliability applications - particularly automotive ECUs, industrial PLCs, and telecom infrastructure where AEC-Q101 compliance and UL recognition are mandatory.
FAQ
What is the clamping voltage of SMCG90A-E3/9AT and how is it measured?
The SMCG90A-E3/9AT has a maximum clamping voltage (VC) of 146 V at a peak pulse current (IPPM) of 10.3 A, tested using the standardized 10/1000 µs double-exponential surge waveform per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by protected circuitry during a worst-case transient event and is confirmed under specified mounting conditions (0.31" × 0.31" copper pads).
Is SMCG90A-E3/9AT suitable for automotive applications?
Yes, SMCG90A-E3/9AT is AEC-Q101 qualified and specifically designed for automotive use. It meets rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD robustness per JESD22. Its 150 °C maximum junction temperature and 1500 W surge rating make it appropriate for engine control units, body control modules, and ADAS power rails.
What does the "E3/9AT" suffix indicate in SMCG90A-E3/9AT?
The "E3" denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "9AT" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This format supports high-volume SMT assembly and is distinct from the "57T" 7-inch reel variant used for lower-volume or prototyping runs.
How does SMCG90A-E3/9AT differ from bidirectional variants like SMCG90CA?
SMCG90A-E3/9AT is unidirectional with cathode marking and conducts only in reverse breakdown; SMCG90CA is bidirectional with no polarity marking and clamps symmetrically in both directions. The unidirectional version offers lower leakage (1.0 µA vs. 2.0 µA for CA types at VWM) and is preferred for DC-biased rails, whereas CA types suit AC-coupled or floating signal lines.
What thermal considerations apply when using SMCG90A-E3/9AT in high-power designs?
SMCG90A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. To maintain TJ ≤ 150 °C under 1500 W surge conditions, ensure PCB copper pad area matches the 8.0 mm × 8.0 mm recommendation and avoid thermal bottlenecks in ground plane connections. Derating per Figure 2 applies above TA = 25 °C.
SMCG90A-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG90A-E3/9AT FAQ
1.How can I place an order for SMCG90A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG90A-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 SMCG90A-E3/9AT reliable?
The price and inventory of SMCG90A-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 SMCG90A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG90A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG90A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG90A-E3/9AT?
SMCG90A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG90A-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 SMCG90A-E3/9AT?
For technical support, including SMCG90A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG90A-E3/9AT requirements.
6.How does Aetrix verify that SMCG90A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG90A-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 SMCG90A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG90A-E3/9AT?
All SMCG90A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG90A-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 SMCG90A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG90A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG90A-E3/9AT Tags
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