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Vishay General Semiconductor - Diodes Division SMCG15CA-M3/57T
- Part No.:
- SMCG15CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15CA-M3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,975
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Product details
Overview
SMCG15CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of signal and power lines. 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 (10/1000 µs), clamping voltage of 24.4 V at 61.5 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG15CA-M3/57T datasheet, SMCG15CA-M3/57T pinout, SMCG15CA-M3/57T application, or SMCG15CA-M3/57T equivalent, this device is selected for high-reliability transient suppression in automotive sensor interfaces, industrial I/O ports, and telecom line protection where bidirectional surge immunity and halogen-free RoHS compliance are required.
Technical Context
The SMCG15CA-M3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±16.7 V in both polarities. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables effective energy diversion during 10/1000 µs surges up to 61.5 A.
Thermally, it delivers 6.5 W power dissipation at TA = 50 °C with RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Ensures reliable turn-on within tight tolerance for predictable protection threshold |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak surge power handling capability under standardized lightning/surge waveform |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or data lines |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing package with matte tin-plated leads; meets UL 94 V-0, J-STD-002 solderability, and JESD 201 Class 2 whisker resistance. Bidirectional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical avalanche junction; conducts when voltage exceeds +VBR |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical junction; conducts when voltage exceeds –VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating lines without polarity concerns |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without failure |
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature, humidity, and mechanical stress tests |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance requirements for Tier 1 automotive and industrial OEMs |
| Low thermal resistance (RθJL = 15 °C/W) | Supports rapid heat transfer to PCB copper pads, sustaining repeated surge events |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±100 V transients before they reach MCU ADC or transceiver inputs. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers by limiting clamped voltage to 24.4 V during 61.5 A surges. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils, solenoids, or motor drives. IC Role / Device Role / Timing Role: Primary front-end protection element on 24 V DC input channels, mounted directly at terminal block. Use Value: Maintains system uptime by absorbing 1500 W surge energy without degradation, verified over >1000 surge cycles per AEC-Q101. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor or building-entry cabling. IC Role / Device Role / Timing Role: Secondary-level TVS used alongside common-mode chokes and primary GDTs in multi-stage telecom surge protection circuits. Use Value: Provides fast-response (sub-nanosecond) clamping to hold differential voltage below transceiver absolute maximum ratings during 10/1000 µs threats. | Use Scenario: Protecting USB-C or barrel-jack input stages of smart home hubs and audio adapters from user-handling ESD and AC-line coupling. IC Role / Device Role / Timing Role: Final-clamp device after fuse and common-mode choke, ensuring <24.4 V stress on internal DC-DC controller during 8 kV contact discharge. Use Value: Achieves IEC 61000-4-2 Level 4 compliance with minimal board space due to compact DO-215AB footprint. |
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 | Same VWM (15 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (24.4 V @ 24.4 A) | Suitable for lower-energy surges (e.g., IEC 61000-4-2 only); not rated for IEC 61000-4-5 Level 4 | Select SMAJ15CA only when surge threat level is limited and cost sensitivity outweighs power-handling margin. |
| SMCJ15CA | Same VWM and bidirectional design, higher PPPM (1500 W), identical VC (24.4 V @ 61.5 A), but larger SMC (DO-214AB) package | Requires larger PCB footprint and different pad layout; better thermal mass but less suitable for dense automotive modules | Choose SMCJ15CA when board layout allows larger package and enhanced thermal cycling endurance is prioritized. |
Compared with SMAJ15CA and SMCJ15CA, the SMCG15CA-M3/57T delivers identical clamping performance and surge rating in a smaller DO-215AB footprint with halogen-free construction-making it optimal for space-constrained, automotive-qualified designs requiring full IEC 61000-4-5 compliance.
Availability
SMCG15CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCG15CA-M3/57T 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMCG series is engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, precise clamping, and surface-mount manufacturability are mandatory.
FAQ
What is the clamping voltage of SMCG15CA-M3/57T and how is it measured?
The SMCG15CA-M3/57T has a maximum clamping voltage (VC) of 24.4 V, measured at a peak pulse current (IPPM) of 61.5 A using the standardized 10/1000 µs double-exponential surge waveform. This value reflects the actual voltage seen by protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range.
Is SMCG15CA-M3/57T suitable for automotive applications?
Yes, SMCG15CA-M3/57T is AEC-Q101 qualified and specifically designed for automotive use. Its construction-including glass-passivated junction, halogen-free M3 suffix, MSL Level 1 rating, and –55 °C to +150 °C operating range-meets stringent requirements for engine control, body electronics, and ADAS sensor interfaces.
How does the bidirectional configuration of SMCG15CA-M3/57T affect circuit design?
The bidirectional configuration of SMCG15CA-M3/57T eliminates polarity concerns in AC-coupled or floating signal paths, allowing placement without orientation checks. It provides symmetrical clamping above ±16.7 V, making it ideal for protecting differential buses like RS-485, CAN, or audio lines where voltage reversals occur.
What is the meaning of the "M3" suffix in SMCG15CA-M3/57T?
The "M3" suffix in SMCG15CA-M3/57T indicates halogen-free, RoHS-compliant construction with industrial-grade reliability. It confirms compliance with JEDEC JESD201 Class 2 whisker resistance and J-STD-002 solderability standards-critical for long-life automotive and industrial deployments.
Can SMCG15CA-M3/57T replace unidirectional TVS diodes in existing designs?
No-SMCG15CA-M3/57T is strictly bidirectional and must not replace unidirectional TVS diodes without circuit review. Unidirectional parts conduct only in reverse bias and rely on forward conduction path elsewhere; substituting SMCG15CA-M3/57T may cause unintended conduction or fail to protect during positive transients in DC-biased lines.
SMCG15CA-M3/57T 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:
- -
- 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-M3/57T FAQ
1.How can I place an order for SMCG15CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15CA-M3/57T 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 SMCG15CA-M3/57T reliable?
The price and inventory of SMCG15CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG15CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG15CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15CA-M3/57T?
SMCG15CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15CA-M3/57T 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 SMCG15CA-M3/57T?
For technical support, including SMCG15CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15CA-M3/57T requirements.
6.How does Aetrix verify that SMCG15CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG15CA-M3/57T 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 SMCG15CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG15CA-M3/57T?
All SMCG15CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15CA-M3/57T, 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 SMCG15CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCG15CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG15CA-M3/57T Tags
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