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Vishay General Semiconductor - Diodes Division SMCG75A-E3/57T
- Part No.:
- SMCG75A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG75A-E3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,926
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Product details
Overview
SMCG75A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR), 12.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It protects MOSFETs and ICs in automotive power supplies against inductive switching transients.
For engineers reviewing the SMCG75A-E3/57T datasheet, SMCG75A-E3/57T pinout, SMCG75A-E3/57T application, or SMCG75A-E3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance at rated surge, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant industrial-grade packaging details.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggered when reverse voltage exceeds its 75 V stand-off rating. Its glass-passivated junction enables fast response (<1 ns) to ESD and lightning-induced surges, with low incremental surge resistance ensuring stable clamping at 121 V (VC) under 10/1000 μs waveform conditions.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and is qualified to AEC-Q101 for automotive under-hood applications requiring TJ = –55 °C to +150 °C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 83.3 V / 92.1 V at IT = 1.0 mA - Confirmed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | 121 V at IPPM = 12.4 A - Clamped voltage during full 1500 W transient, defining protected circuit stress level |
| PPPM | 1500 W - Peak surge power handling capability with 10/1000 μs waveform, critical for IEC 61000-4-5 compliance |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm pad layout, enabling thermal derating calculations |
| TJ max | +150 °C - Maximum junction temperature, supporting under-hood automotive deployment without forced cooling |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing configuration with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to system ground or low-side return path; defines conduction direction during surge |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); absorbs transient energy when voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures consistent VBR tolerance and long-term stability under thermal cycling and humidity exposure |
| Low-profile DO-215AB package | Enables high-density PCB layouts while maintaining 1500 W surge capability in <10 mm² footprint |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics where field failure is unacceptable |
| MSL Level 1 rating | Permits unlimited floor life and single-reflow processing at 260 °C peak, simplifying SMT manufacturing |
| RoHS-compliant E3 suffix | Meets industrial environmental compliance without halogen content restrictions or whisker risk (JESD 201 Class 2) |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes before regulator stage. Use Value: Limits voltage to ≤121 V during 1500 W surges, preventing overvoltage damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers in variable-frequency drives exposed to IGBT switching noise. IC Role / Device Role / Timing Role: TVS mounted across motor-phase sense lines to suppress coupled dv/dt transients. Use Value: Fast clamping (<1 ns) holds sensed signal integrity below 121 V, avoiding false overcurrent trips in protection logic. |
| Telecom DC Power Input | Consumer Appliance Mainboard |
Use Scenario: Securing PoE-powered equipment inputs against lightning-induced surges on 48 V DC lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter and Ethernet PHY interface. Use Value: Withstands 12.4 A peak pulse current at 10/1000 μs, meeting IEC 61000-4-5 Level 4 immunity requirements. | Use Scenario: Shielding MCU I/O and display backlight drivers in washing machine control boards from relay coil kickback. IC Role / Device Role / Timing Role: Localized TVS on 24 V solenoid driver outputs to absorb inductive energy. Use Value: 75 V VWM matches typical appliance supply rails; 121 V VC ensures safe margin below 150 V IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75A-E3/57T | Lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 100 °C/W | Not AEC-Q101 qualified; limited to consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and surge robustness |
| SMCJ75A-E3/57T | Same 1500 W PPPM but larger SMC (DO-214AB) package, RθJA = 50 °C/W | Higher thermal performance but requires 30% more board area | Choose when enhanced thermal margin is needed and PCB space permits larger footprint |
Compared with SMAJ75A-E3/57T and SMCJ75A-E3/57T, SMCG75A-E3/57T delivers AEC-Q101 qualification and DO-215AB compactness without sacrificing 1500 W surge rating-making it optimal for space-constrained automotive modules needing certified reliability.
Availability
SMCG75A-E3/57T is available at Aetrix Electronics and suitable for automotive power supply protection, industrial motor drive control, and telecom DC input protection requiring stable component supply and full traceability.
Supply support for SMCG75A-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 designs discrete semiconductors for high-reliability power, signal, and protection applications, with global manufacturing and rigorous quality systems.
The SMCG series targets automotive and industrial transient suppression, combining AEC-Q101 qualification, high-power density, and surface-mount compatibility for next-generation ECU and power module designs.
FAQ
What is the clamping voltage of SMCG75A-E3/57T under full-rated surge?
The SMCG75A-E3/57T clamps to 121 V when subjected to its maximum rated peak pulse current of 12.4 A (10/1000 μs waveform). This VC value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The 121 V clamping ensures compatibility with 13.5–16 V automotive systems and 24 V industrial rails.
Is SMCG75A-E3/57T suitable for automotive under-hood applications?
Yes, SMCG75A-E3/57T is AEC-Q101 qualified and rated for TJ = –55 °C to +150 °C operation, making it suitable for under-hood automotive environments. Its DO-215AB package withstands thermal cycling and vibration, and its 75 V VWM aligns with 12 V battery systems subject to load dump. The E3 suffix confirms RoHS compliance and JESD 201 Class 2 whisker resistance.
How does the SMCG75A-E3/57T differ from SMAJ75A-E3/57T?
SMCG75A-E3/57T offers 1500 W peak pulse power (PPPM) and AEC-Q101 qualification in a smaller DO-215AB package, whereas SMAJ75A-E3/57T provides only 400 W PPPM and lacks automotive qualification. Both share 75 V VWM, but SMCG75A-E3/57T's lower RθJA (75 °C/W vs. 100 °C/W) enables better thermal performance in high-ambient environments.
What is the minimum recommended PCB pad layout for SMCG75A-E3/57T?
The minimum recommended mounting pad layout for SMCG75A-E3/57T is 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This layout achieves the published RθJA of 75 °C/W and supports full 1500 W surge capability. Smaller pads increase thermal resistance and reduce surge current handling proportionally.
Does SMCG75A-E3/57T have polarity marking, and how is it identified?
Yes, SMCG75A-E3/57T is unidirectional and features a visible cathode band on the package body. Per Vishay documentation, the banded end is the cathode terminal and must be connected to the line being protected (e.g., 12 V rail), while the anode connects to ground. Bidirectional variants use "CA" suffix and lack band marking-SMCG75A-E3/57T is not bidirectional.
SMCG75A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMCG75A-E3/57T FAQ
1.How can I place an order for SMCG75A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG75A-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 SMCG75A-E3/57T reliable?
The price and inventory of SMCG75A-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 SMCG75A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG75A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG75A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG75A-E3/57T?
SMCG75A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG75A-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 SMCG75A-E3/57T?
For technical support, including SMCG75A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG75A-E3/57T requirements.
6.How does Aetrix verify that SMCG75A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG75A-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 SMCG75A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG75A-E3/57T?
All SMCG75A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG75A-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 SMCG75A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG75A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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