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Vishay General Semiconductor - Diodes Division SMCG7.5CA-E3/9AT
- Part No.:
- SMCG7.5CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5CA-E3/9AT.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,367
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Product details
Overview
SMCG7.5CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for clamping voltage transients on signal and power lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 116.3 A peak pulse current (IPPM), and clamps to ≤12.9 V at IPPM - used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SMCG7.5CA-E3/9AT datasheet, SMCG7.5CA-E3/9AT pinout, SMCG7.5CA-E3/9AT application, or SMCG7.5CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical V-I characteristics enable identical clamping in both polarities, making it suitable for AC-coupled or floating signal lines without polarity concerns.
Rated for -55 °C to +150 °C junction temperature, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, and is qualified to AEC-Q101 for automotive under-hood and chassis applications. The matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin for 5 V–12 V signal/power rails. |
| VBR (min/max) | 8.33 V / 9.21 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across process and temperature. |
| VC @ IPPM | ≤12.9 V at 116.3 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress below logic-level thresholds. |
| PPPM | 1500 W - peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) compliance with margin. |
| ID @ VWM | 100 µA max - low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | +150 °C - enables placement near heat sources (e.g., power MOSFETs, motor drivers) without derating. |
| RθJA | 75 °C/W - thermal resistance with 8.0 mm × 8.0 mm copper pads; informs PCB layout for sustained 6.5 W power dissipation. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount case with 2 terminals; meets UL 94 V-0 flammability rating and AEC-Q101 qualification. Matte tin-plated leads ensure robust solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | AC-coupled transient path | No polarity marking; symmetric terminals allow installation without orientation check - reduces assembly errors in high-volume SMT. |
| Case (exposed metal) | Thermal conduction path | Integral leadframe acts as heatsink; requires minimum 8.0 mm × 8.0 mm copper pad per terminal for rated PPPM performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - supports use in ADAS sensors and body control modules. |
| Glass-passivated junction | Stable VBR over lifetime and temperature; eliminates parameter drift seen in epoxy-passivated alternatives. |
| MSL Level 1 rating | Enables single-pass reflow at 260 °C peak without moisture-induced popcorning - eliminates pre-bake step in production. |
| 1500 W 10/1000 µs rating | Withstands repeated ISO 7637-2 Pulse 1/2a/5a surges in 12 V vehicle systems without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V and 5 V logic interfacing with CAN/LIN buses. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy before reaching sensor ASIC. Use Value: Maintains signal fidelity under ISO 16750-2 load dump (120 V/1 s) and prevents latch-up in 5 V sensor supply rails. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppression device mounted adjacent to terminal block to clamp fast-rising spikes (<1 ns rise time) from inductive loads. Use Value: Enables >100,000 actuation cycles without degradation, meeting IEC 61000-4-4 Level 4 (2 kV) immunity requirements. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Shielding RS-485 transceiver data lines in base station remote radio units exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp backup for residual transients. Use Value: Limits line-to-line voltage to <13 V during 1 kV/42 Ω combination wave test, preserving transceiver ESD tolerance. |
Use Scenario: Guarding USB 2.0 D+/D− lines in portable medical monitors against ESD events and hot-plug transients. IC Role / Device Role / Timing Role: Fast-response TVS placed immediately upstream of USB PHY to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Clamps within 1 ns to <13 V, preventing data corruption and PHY latch-up while maintaining <0.5 pF junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | Same VWM (7.5 V) and PPPM (1500 W), but SMA (DO-214AC) package - larger footprint (4.5 mm × 2.7 mm vs. SMCG's 3.8 mm × 2.6 mm) and higher RθJA (90 °C/W). | Less suitable for space-constrained automotive modules; requires larger PCB area and more copper for thermal management. | Select when existing SMA footprint is standardized and board real estate is not constrained. |
| SMCJ7.5CA | Higher PPPM (3000 W), same DO-214AB package outline but thicker profile; VBR range wider (8.33–10.3 V); no AEC-Q101 qualification listed. | Used where higher surge margin is needed (e.g., alternator line protection), but not certified for automotive electronics. | Choose only for industrial power supply inputs where AEC-Q101 is not mandated. |
Compared with SMAJ7.5CA and SMCJ7.5CA, SMCG7.5CA-E3/9AT delivers superior space efficiency and automotive qualification in a thermally optimized DO-215AB package, enabling compact, high-reliability designs for sensor nodes and ECUs without compromising surge rating or clamping performance.
Availability
SMCG7.5CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer USB port hardening requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG7.5CA-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, thermal performance, and automotive qualification.
The SMCG series was engineered specifically for high-density, AEC-Q101-compliant transient suppression in automotive and industrial environments where low profile, fast response, and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of SMCG7.5CA-E3/9AT at its rated peak pulse current?
The SMCG7.5CA-E3/9AT clamps to a maximum of 12.9 V at its specified peak pulse current (IPPM) of 116.3 A under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, ensuring repeatable thermal conditions as defined in the Vishay datasheet revision 09-Jan-2024.
Is SMCG7.5CA-E3/9AT suitable for automotive applications?
Yes, SMCG7.5CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis applications. Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, and -55 °C to +150 °C operating range - meets stringent automotive reliability requirements confirmed in Vishay document 88457.
Does SMCG7.5CA-E3/9AT have polarity markings?
No, SMCG7.5CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking on the SMCG (DO-215AB) package. Its symmetrical electrical characteristics eliminate the need for orientation during placement, simplifying automated assembly and reducing misalignment risk in high-speed SMT lines.
What is the maximum reverse leakage current for SMCG7.5CA-E3/9AT at its stand-off voltage?
At its 7.5 V stand-off voltage (VWM), SMCG7.5CA-E3/9AT exhibits a maximum reverse leakage current (ID) of 100 µA at 25 °C, as specified in the Vishay Electrical Characteristics table. This low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-powered systems.
What does the "E3/9AT" suffix indicate in SMCG7.5CA-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "9AT" specifies packaging in a 13-inch diameter plastic tape and reel containing 3500 units - optimized for high-volume pick-and-place manufacturing. This ordering code aligns with Vishay's standard delivery mode for SMCG series devices.
SMCG7.5CA-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- 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)
SMCG7.5CA-E3/9AT FAQ
1.How can I place an order for SMCG7.5CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5CA-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 SMCG7.5CA-E3/9AT reliable?
The price and inventory of SMCG7.5CA-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 SMCG7.5CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG7.5CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5CA-E3/9AT?
SMCG7.5CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5CA-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 SMCG7.5CA-E3/9AT?
For technical support, including SMCG7.5CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG7.5CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG7.5CA-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 SMCG7.5CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG7.5CA-E3/9AT?
All SMCG7.5CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5CA-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 SMCG7.5CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG7.5CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5CA-E3/9AT Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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