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Vishay General Semiconductor - Diodes Division SMCG15CA-M3/9AT
- Part No.:
- SMCG15CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15CA-M3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,489
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Product details
Overview
SMCG15CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamps to ≤24.4 V at 61.5 A (10/1000 µs waveform). It is AEC-Q101 qualified and halogen-free, targeting automotive sensor line protection.
For engineers reviewing the SMCG15CA-M3/9AT datasheet, SMCG15CA-M3/9AT pinout, SMCG15CA-M3/9AT application, or SMCG15CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), AEC-Q101 qualification, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping TVS in bidirectional mode, with symmetrical breakdown characteristics in both polarities. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
The SMCG15CA-M3/9AT uses a low-inductance DO-215AB surface-mount package optimized for high-current surge handling. Thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) confirm suitability for industrial and automotive environments where junction temperature must remain ≤150 °C under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Ensures reliable turn-on margin above VWM for bidirectional protection |
| VC @ IPPM | ≤24.4 V at 61.5 A - Clamping voltage limits downstream IC stress during 10/1000 µs surges |
| PPPM | 1500 W - Sustains high-energy transients without failure when mounted per recommended 8.0 mm × 8.0 mm pad layout |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial control environments |
| Package | SMCG (DO-215AB) - Low-profile, MSL Level 1, matte tin-plated leads compliant with J-STD-002 solderability |
Pinout & Package
SMCG15CA-M3/9AT is housed in the SMCG (DO-215AB) surface-mount package - a dual-leaded, gull-wing configuration with no polarity marking for bidirectional devices. The case is UL 94 V-0 rated, halogen-free, and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional current path | No polarity marking required; terminals interchangeable - enables simplified PCB layout for AC-coupled or floating lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal stress and humidity exposure |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Halogen-free & RoHS compliant (M3 suffix) | Meets automotive OEM environmental requirements and JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units and ADAS modules from load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector entry point to shunt transients before reaching precision amplifier or ADC input. Use Value: Maintains signal fidelity with <1.0 µA leakage at 15 V while clamping 61.5 A surges to ≤24.4 V - preserving sensor accuracy and MCU I/O integrity. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines against EFT, ESD, and coupled surges in factory automation gateways and motor drives. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) providing common-mode and differential-mode transient suppression without disrupting 1 Mbps CAN signaling. Use Value: Fast <1 ns response and low capacitance enable clean bus waveforms; AEC-Q101 rating supports deployment in harsh industrial environments. |
| Consumer USB Power Delivery | Telecom Base Station Control Lines |
Use Scenario: Overvoltage protection on 5 V–20 V USB PD CC lines and VCONN paths exposed to hot-plug and cable coupling events. IC Role / Device Role / Timing Role: Bidirectional clamp absorbing ±15 kV contact ESD (IEC 61000-4-2) and 10/1000 µs surges up to 1500 W. Use Value: 15 V VWM aligns with USB PD specification margins; DO-215AB footprint allows compact placement adjacent to USB-C connector. |
Use Scenario: Protecting RS-485, I²C, or GPIO control lines between baseband processors and RF front-end modules in 4G/5G macro cells. IC Role / Device Role / Timing Role: Standoff-rated TVS suppressing induced lightning surges (IEC 61000-4-5) and antenna coupling transients on low-voltage digital interfaces. Use Value: 1500 W PPPM and 150 °C TJ max ensure survivability in outdoor telecom enclosures with wide ambient temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA-E3/57T | Same VWM (15 V), 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 high-reliability industrial use | Select only if board space constraints prevent DO-215AB placement and surge energy remains below 400 W |
| SMCJ15CA-M3 | Same VWM (15 V), higher PPPM (1500 W), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm vs. DO-215AB's 4.0 mm × 3.17 mm) | Requires more PCB area; thermal performance similar (RθJA ≈ 70 °C/W) but less compatible with fine-pitch automotive layouts | Prefer when existing SMC footprint is fixed and higher creepage/clearance is needed; avoid if miniaturization is critical |
Compared with SMAJ15CA-E3/57T and SMCJ15CA-M3, the SMCG15CA-M3/9AT delivers identical 15 V clamping performance in a 30 % smaller footprint than SMCJ and 50 % higher surge rating than SMAJ - making it optimal for space-constrained, high-reliability automotive and industrial designs requiring AEC-Q101 compliance and halogen-free materials.
Availability
SMCG15CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and telecom control line applications requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for SMCG15CA-M3/9AT 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, efficiency, and application-specific optimization.
The SMCG series was developed specifically for high-surge, space-constrained automotive and industrial applications - delivering AEC-Q101-qualified transient protection in the smallest possible DO-215AB footprint without sacrificing 1500 W power handling.
FAQ
What is the clamping voltage of SMCG15CA-M3/9AT at its rated peak pulse current?
The SMCG15CA-M3/9AT clamps to a maximum of 24.4 V at its specified peak pulse current of 61.5 A under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per Vishay's recommended layout, ensuring repeatable thermal and electrical performance in real-world PCB implementations. The SMCG15CA-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG15CA-M3/9AT suitable for automotive applications?
Yes, the SMCG15CA-M3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control module environments. Its 150 °C maximum junction temperature, halogen-free (M3) construction, and MSL Level 1 reflow compatibility meet stringent OEM requirements. The SMCG15CA-M3/9AT is commonly deployed on LIN, CAN, and sensor signal lines where bidirectional transient immunity is mandatory.
How does the DO-215AB package of SMCG15CA-M3/9AT compare thermally to SMA or SMC packages?
The DO-215AB package of the SMCG15CA-M3/9AT achieves a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W - significantly better than SMA (110 °C/W) and comparable to SMC (≈70 °C/W), despite its smaller footprint. This is enabled by optimized internal leadframe design and direct thermal path to PCB copper. The SMCG15CA-M3/9AT thus delivers SMC-level power handling in a 30 % smaller area, reducing board space without thermal compromise.
What is the reverse leakage current specification for SMCG15CA-M3/9AT at its stand-off voltage?
The SMCG15CA-M3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage is maintained across its full operating temperature range and ensures minimal loading on high-impedance sensor outputs or battery-backed control lines. The SMCG15CA-M3/9AT's glass-passivated junction contributes to this stable, low-leakage behavior over time and thermal cycling.
Does SMCG15CA-M3/9AT require polarity-aware PCB layout?
No - the SMCG15CA-M3/9AT is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking on the DO-215AB package. This eliminates orientation constraints during automated placement and simplifies layout for AC-coupled or floating signal lines. Unlike unidirectional variants (e.g., SMCG15A), the SMCG15CA-M3/9AT functions identically regardless of terminal connection direction, making it ideal for differential and bidirectional interfaces like CAN or USB PD CC lines.
SMCG15CA-M3/9AT 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- 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)
SMCG15CA-M3/9AT FAQ
1.How can I place an order for SMCG15CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15CA-M3/9AT 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 SMCG15CA-M3/9AT reliable?
The price and inventory of SMCG15CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG15CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG15CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15CA-M3/9AT?
SMCG15CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15CA-M3/9AT 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 SMCG15CA-M3/9AT?
For technical support, including SMCG15CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15CA-M3/9AT requirements.
6.How does Aetrix verify that SMCG15CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG15CA-M3/9AT 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 SMCG15CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG15CA-M3/9AT?
All SMCG15CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15CA-M3/9AT, 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 SMCG15CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG15CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG15CA-M3/9AT Tags
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