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Vishay General Semiconductor - Diodes Division SMCG15A-M3/57T
- Part No.:
- SMCG15A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15A-M3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,098
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Product details
Overview
SMCG15A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in DO-215AB (SMCG) package, featuring 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power electronics.
For engineers reviewing the SMCG15A-M3/57T datasheet, SMCG15A-M3/57T pinout, SMCG15A-M3/57T application, or SMCG15A-M3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and bidirectional variant compatibility - all critical for ESD/surge protection design-in and BOM validation.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, triggering when reverse voltage exceeds VBR to divert surge energy away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
Designed for 10/1000 µs waveform surges, it delivers 1500 W peak pulse power with 24.4 V clamping at 61.5 A, enabling robust protection of 12 V and 24 V automotive subsystems. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range for 12 V system signal lines. |
| VBR min/max | 16.7 V / 18.5 V - Verified breakdown threshold at 1.0 mA test current; ensures consistent turn-on across temperature and production lots. |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage during 10/1000 µs surge; guarantees downstream ICs see <25 V under worst-case 1500 W transient. |
| PPPM | 1500 W - Peak pulse power handling per IEC 61000-4-5; supports Level 4 surge immunity in automotive ECUs and industrial controllers. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on 8 mm × 8 mm copper pads; enables thermal design margin estimation without heatsink. |
| TJ max | +150 °C - Maximum junction temperature rating; qualified for under-hood automotive environments per AEC-Q101. |
| Package | DO-215AB (SMCG) - Low-profile SMD outline with gull-wing leads; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: DO-215AB (SMCG), surface-mount gull-wing configuration. Cathode indicated by band on body; anode is unmarked end. Meets UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line (e.g., CAN_H, LIN, or 12 V rail); carries full IPPM during clamping event. |
| Anode (unbanded end) | Reference/ground return path | Connected to system ground or low-impedance reference plane; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics. |
| Halogen-free (M3 suffix) | Complies with IEC 61249-2-21 and JEDEC J-STD-020; eliminates brominated flame retardants for safer recycling and reduced corrosivity in humid environments. |
| Low incremental surge resistance | Enables tighter VC–VBR margin (ΔV = 7.7 V), minimizing overvoltage stress on protected ICs during fast-rising transients. |
| MSL Level 1 (260 °C peak) | Unlimited floor life and compatibility with standard lead-free reflow profiles - eliminates baking requirements and simplifies SMT line integration. |
| Glass passivated junction | Provides stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term parameter stability under thermal aging and humidity bias. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails feeding engine control units (ECUs) and lighting modules against load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp transients above 15 V. Use Value: Limits voltage excursion to ≤24.4 V during ISO 7637-2 Pulse 5a (load dump), preventing damage to LDOs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules exposed to motor drive noise. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector to shunt EFT bursts (IEC 61000-4-4) before reaching ADC front-end. Use Value: Maintains signal integrity by suppressing >1 kV transients within nanoseconds, avoiding ADC saturation or latch-up. |
| Automotive CAN Bus Node | Consumer Appliance Motor Control |
Use Scenario: Protecting CAN_H/CAN_L lines in telematics gateways subjected to ESD (±8 kV contact) and coupled surges from adjacent high-power circuits. IC Role / Device Role / Timing Role: Paired unidirectional SMCG15A-M3/57T devices (one per line) referenced to common ground, clamping differential and common-mode spikes. Use Value: Ensures CAN physical layer remains operational after 1500 W surges, preserving bus arbitration and error frame generation capability. |
Use Scenario: Shielding BLDC motor driver ICs in washing machines and HVAC systems from commutation-induced voltage spikes on DC bus and gate drive lines. IC Role / Device Role / Timing Role: TVS placed across motor phase terminals and between gate driver output and ground to absorb flyback energy. Use Value: Prevents premature failure of 600 V MOSFETs by limiting dv/dt-induced overshoot to <25 V, extending mean time between failures (MTBF). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/52T | Same VWM (15 V), lower PPPM (400 W), SMA package (DO-214AC), RθJA = 110 °C/W. | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 load dump. | Select when cost sensitivity outweighs surge rating and board space allows larger footprint. |
| SMCJ15A-M3/57T | Same VWM (15 V), identical PPPM (1500 W), but SMC package (DO-214AB), RθJA = 40 °C/W, higher IFSM (200 A). | Better thermal performance and surge endurance; requires larger PCB pad area (≥10 mm² per pad vs. 6.4 mm² for SMCG). | Prefer for high-reliability industrial drives where thermal margin and single-pulse survivability are critical. |
Compared with SMCG15A-M3/57T, SMAJ15A-E3/52T trades surge capacity for cost and size, while SMCJ15A-M3/57T improves thermal dissipation at the expense of footprint - making SMCG15A-M3/57T the optimal balance of AEC-Q101 compliance, 1500 W rating, and compact DO-215AB layout in space-constrained automotive modules.
Availability
SMCG15A-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, automotive CAN bus node hardening, and consumer appliance motor control requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG15A-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, and protection devices with emphasis on reliability, efficiency, and automotive qualification.
The SMCG series was engineered specifically for high-power transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 qualification, halogen-free materials, and optimized DO-215AB thermal performance.
FAQ
What is the clamping voltage of SMCG15A-M3/57T at its rated peak pulse current?
The SMCG15A-M3/57T has a maximum clamping voltage (VC) of 24.4 V at 61.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuitry remains below critical overvoltage thresholds during surge events. The SMCG15A-M3/57T maintains this clamping performance across its qualified operating temperature range.
Is SMCG15A-M3/57T certified for automotive use?
Yes, SMCG15A-M3/57T is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. Its M3 suffix denotes halogen-free, RoHS-compliant construction validated for under-hood and chassis-mounted automotive applications. The SMCG15A-M3/57T meets the reliability requirements for engine control, body electronics, and ADAS subsystems.
How does the SMCG15A-M3/57T differ from bidirectional variants like SMCG15CA?
The SMCG15A-M3/57T is unidirectional, with polarity marked by a cathode band and intended for DC line protection (e.g., 12 V supply rails), whereas SMCG15CA is bidirectional and used for AC or differential signal lines (e.g., CAN, RS-485). Their VWM (15 V), VBR (16.7–18.5 V), and VC (24.4 V) are identical, but SMCG15A-M3/57T supports forward conduction and IFSM (200 A), unlike the bidirectional version. The SMCG15A-M3/57T must be oriented correctly during placement.
What is the thermal resistance of SMCG15A-M3/57T, and how does it affect layout?
The SMCG15A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet Figure 6. To maintain TJ ≤ 150 °C during repetitive surges, designers must ensure adequate copper area and avoid excessive trace length between the SMCG15A-M3/57T and ground planes. Derating applies above TA = 25 °C per Fig. 2.
Can SMCG15A-M3/57T replace SMAJ15A in existing designs?
No - SMCG15A-M3/57T is not a drop-in replacement for SMAJ15A due to different packages (DO-215AB vs. DO-214AC), thermal characteristics (RθJA = 75 vs. 110 °C/W), and surge ratings (1500 W vs. 400 W). While both share VWM = 15 V, the SMCG15A-M3/57T requires revised PCB layout, thermal validation, and updated surge test plans. Use SMCG15A-M3/57T only where its higher PPPM and AEC-Q101 qualification are explicitly required.
SMCG15A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCG15A-M3/57T FAQ
1.How can I place an order for SMCG15A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15A-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 SMCG15A-M3/57T reliable?
The price and inventory of SMCG15A-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 SMCG15A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG15A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15A-M3/57T?
SMCG15A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15A-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 SMCG15A-M3/57T?
For technical support, including SMCG15A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15A-M3/57T requirements.
6.How does Aetrix verify that SMCG15A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG15A-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 SMCG15A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG15A-M3/57T?
All SMCG15A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15A-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 SMCG15A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG15A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG15A-M3/57T Tags
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