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Vishay General Semiconductor - Diodes Division SMCG75CA-E3/9AT
- Part No.:
- SMCG75CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG75CA-E3/9AT.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,849
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Product details
Overview
SMCG75CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection on signal and power lines. It features a 75 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), clamping voltage of 121 V at 12.4 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG75CA-E3/9AT datasheet, SMCG75CA-E3/9AT pinout, SMCG75CA-E3/9AT application, or SMCG75CA-E3/9AT equivalent, this device is selected for robust overvoltage protection in automotive sensor interfaces, industrial I/O modules, and telecom line drivers where bidirectional clamping, low leakage (<1 μA at VWM), and MSL Level 1 solderability are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 83.3–92.1 V (min/max) at 1 mA test current - ensuring consistent clamping behavior regardless of transient polarity. Its 121 V clamping voltage at 12.4 A (10/1000 µs waveform) provides predictable voltage limiting during ESD and lightning-induced surges.
The device uses a glass-passivated silicon junction for stable performance and fast response time (<1 ns), supported by low incremental surge resistance and thermal resistance (RθJA = 75 °C/W). It is rated for continuous operation from –55 °C to +150 °C junction temperature and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse stand-off voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - guaranteed breakdown range ensures reliable turn-on under transients without premature conduction |
| VC @ IPPM | 121 V at 12.4 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case surge event |
| PPPM | 1500 W - peak surge energy handling capability per single transient, enabling protection against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | <1 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| Package | SMCG (DO-215AB) - surface-mount gull-wing package with 8.0 mm × 8.0 mm copper pad footprint for optimal thermal dissipation |
Pinout & Package
SMCG75CA-E3/9AT is housed in the SMCG (DO-215AB) package - a bidirectional, unmarked gull-wing surface-mount case with two terminals. No polarity marking is present, as the device functions identically in both directions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; symmetrical conduction enables universal placement |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing the bidirectional path; no PCB layout constraints due to non-polarized construction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring zero-failure reliability |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage parameters across temperature and lifetime stress conditions |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system-level immunity |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed industrial and automotive enclosures |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in vehicle body control modules. IC Role / Device Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt surge energy to ground. Use Value: With 121 V clamping at 12.4 A and AEC-Q101 qualification, SMCG75CA-E3/9AT maintains signal integrity while surviving repeated 12 V system surges up to 1500 W. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role: Standoff-connected TVS between input line and common, absorbing repetitive 1 kV/500 A transients per IEC 61000-4-5. Use Value: 75 V VWM provides sufficient margin above nominal 24 V operation, while 1500 W PPPM enables compliance with industrial surge immunity standards without derating. |
| Telecom Line Driver Protection | Consumer Power Adapter ESD Guard |
|
Use Scenario: Shielding RS-485 transceiver outputs in base station remote units from lightning-induced surges on long cable runs. IC Role / Device Role: Differential-mode TVS placed across A/B lines to clamp common-mode and differential transients simultaneously. Use Value: Symmetrical bidirectional structure ensures equal clamping in both directions, eliminating need for dual unidirectional devices and reducing BOM count. |
Use Scenario: Adding secondary-level surge suppression on USB-C and barrel jack inputs of smart home hubs and audio amplifiers. IC Role / Device Role: Low-leakage (≤1 μA) TVS mounted at board edge to divert ESD events before reaching primary regulator ICs. Use Value: Ultra-low ID at 75 V VWM prevents loading of upstream LDOs or buck converters, preserving efficiency and regulation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75CA | Same VWM (75 V) and PPPM (1500 W), but SMA (DO-214AC) package with higher RθJA (110 °C/W) and lower mounting thermal mass | Limited to lower-duty-cycle surges in non-automotive consumer applications due to reduced thermal robustness | Select SMAJ75CA only when board space is constrained and surge repetition rate is low; SMCG75CA-E3/9AT preferred for automotive or high-reliability use. |
| SMCJ75CA | Identical electrical specs (75 V VWM, 1500 W PPPM), but SMC (DO-214AB) package with larger footprint and higher thermal mass (RθJA = 65 °C/W) | Better sustained power handling but requires more PCB area; not AEC-Q101 qualified | Choose SMCJ75CA for cost-sensitive industrial designs where AEC-Q101 is unnecessary and layout allows larger footprint. |
Compared with SMAJ75CA and SMCJ75CA, SMCG75CA-E3/9AT delivers superior thermal performance in a compact gull-wing form factor while maintaining automotive-grade qualification - making it the optimal choice for space-constrained, high-reliability applications requiring validated lifecycle assurance.
Availability
SMCG75CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line driver circuits requiring stable component supply, full traceability, and long-term production support.
Supply support for SMCG75CA-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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMCG series was developed specifically for high-power, bidirectional transient suppression in automotive and industrial environments - prioritizing AEC-Q101 compliance, low clamping overshoot, and robust thermal performance in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in SMCG75CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration - meaning SMCG75CA-E3/9AT provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied. This eliminates polarity marking on the device and simplifies PCB layout versus unidirectional variants like SMCG75A.
Is SMCG75CA-E3/9AT suitable for automotive applications?
Yes - SMCG75CA-E3/9AT is AEC-Q101 qualified and manufactured with matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Its –55 °C to +150 °C operating range, MSL Level 1 rating, and glass-passivated junction make it suitable for under-hood and cabin-mounted automotive electronics including body control modules and ADAS sensor interfaces.
What is the clamping voltage of SMCG75CA-E3/9AT at its rated peak pulse current?
The clamping voltage (VC) of SMCG75CA-E3/9AT is 121 V at 12.4 A peak pulse current (IPPM), measured using the standardized 10/1000 µs double-exponential surge waveform. This value represents the maximum voltage imposed on the protected circuit during a worst-case transient event within the device's 1500 W power rating.
How does the SMCG (DO-215AB) package differ from SMA or SMC packages?
The SMCG (DO-215AB) package features gull-wing leads optimized for automated placement and high thermal conductivity via large copper pad areas (0.31" × 0.31"). Compared to SMA (DO-214AC), it offers lower RθJA (75 vs. 110 °C/W); versus SMC (DO-214AB), it achieves similar thermal performance in a smaller footprint and with finer pitch - critical for dense automotive PCB layouts.
Does SMCG75CA-E3/9AT require a heatsink for standard operation?
No external heatsink is required for SMCG75CA-E3/9AT under typical surge conditions. Its RθJA of 75 °C/W and 6.5 W steady-state power dissipation rating assume mounting on 0.31" × 0.31" copper pads per terminal - a standard layout that provides adequate thermal relief for intermittent transient events. Continuous DC power dissipation must remain below 6.5 W at TA ≤ 50 °C.
SMCG75CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG75CA-E3/9AT FAQ
1.How can I place an order for SMCG75CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG75CA-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 SMCG75CA-E3/9AT reliable?
The price and inventory of SMCG75CA-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 SMCG75CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG75CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG75CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG75CA-E3/9AT?
SMCG75CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG75CA-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 SMCG75CA-E3/9AT?
For technical support, including SMCG75CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG75CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG75CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG75CA-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 SMCG75CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG75CA-E3/9AT?
All SMCG75CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG75CA-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 SMCG75CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG75CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG75CA-E3/9AT Tags
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