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Vishay General Semiconductor - Diodes Division SMCG48A-M3/57T
- Part No.:
- SMCG48A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48A-M3/57T.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,065
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Product details
Overview
SMCG48A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection with 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM). It clamps transients to ≤77.4 V at 19.4 A IPPM and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMCG48A-M3/57T datasheet, SMCG48A-M3/57T pinout, SMCG48A-M3/57T application, or SMCG48A-M3/57T equivalent, this device is selected for robust overvoltage protection on DC power rails, sensor interfaces, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and halogen-free industrial-grade reliability are required.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (53.3–58.9 V at 1.0 mA test current). Its glass-passivated junction ensures stable leakage performance (ID ≤ 1.0 µA at VWM = 48 V) and repeatable breakdown behavior across temperature.
The device delivers 1500 W peak pulse power under the standardized 10/1000 µs waveform, with clamping voltage VC = 77.4 V at IPPM = 19.4 A. Thermal resistance is RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads), supporting operation up to TJ = +150 °C with derating above TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V systems. |
| VBR min/max | 53.3 V / 58.9 V at IT = 1.0 mA - Confirmed avalanche onset window; ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 77.4 V at 19.4 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to sub-80 V level. |
| PPPM | 1500 W - Peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) compliance with margin. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at rated stand-off; avoids parasitic loading on precision sensor or bias networks. |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood automotive and industrial enclosures. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with gull-wing leads; optimized for automated placement and reflow compatibility. |
Pinout & Package
SMCG48A-M3/57T uses the SMCG (DO-215AB) surface-mount package: a molded, halogen-free, RoHS-compliant case with matte tin-plated gull-wing terminals. Polarity is marked by a cathode band on the body; the banded end is the cathode (K), and the opposite end is the anode (A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive terminal in forward bias; connected to ground or lower-potential node in unidirectional TVS configuration | Completes clamping path during surge events; must be routed to lowest-impedance return plane for effective energy shunting. |
| Cathode (K) | Marked terminal (band); reverse-biased connection point to protected line | Connected directly to the signal or power rail requiring protection; determines directionality and clamping polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables drop-in use in ADAS and powertrain ECUs. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and JESD201 Class 2 whisker resistance-supports green manufacturing and long-term solder joint integrity. |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ≈ 1.35) and minimal overshoot during fast transients-critical for protecting 48 V CAN FD and LIN bus transceivers. |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns-eliminates bake-out steps and reduces production cost. |
| Glass-passivated junction | Provides stable VBR tolerance and low leakage over lifetime-ensures consistent protection performance in harsh thermal environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges exceeding 48 V. Use Value: Limits transient voltage to ≤77.4 V, safeguarding downstream PMICs and microcontrollers rated for 80 V absolute maximum. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS mounted at connector entry to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Prevents sensor offset drift or latch-up without loading the mV-level output signal due to ultra-low ID. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven from 12 V logic in motor control inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes during switching transitions. Use Value: Fast <1 ns response prevents gate oxide breakdown while maintaining driver timing integrity via minimal capacitance. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, absorbing 10/1000 µs surges up to 1500 W. Use Value: Withstands repeated lightning-induced surges without degradation, verified per Telcordia GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/57T (Vishay) | Same VWM (48 V) and PPPM (400 W), but lower power rating; SMA (DO-214AC) package, smaller footprint, higher RθJA (110 °C/W) | Suitable for space-constrained consumer or computing boards where 400 W surge margin suffices | Select SMAJ48A-E3/57T only if board layout cannot accommodate SMCG's larger pad area and thermal mass. |
| 1.5KE48A (ON Semiconductor) | Through-hole DO-201 package; same VWM/VC specs but higher VF and no AEC-Q101 qualification; 1500 W rating requires derating above 25 °C | Used in legacy industrial power supplies where THT assembly remains standard and automotive qualification is not required | Choose 1.5KE48A only for non-automotive, non-SMT designs where manual assembly or existing through-hole infrastructure applies. |
Compared with SMAJ48A-E3/57T and 1.5KE48A, SMCG48A-M3/57T provides superior thermal performance (RθJA = 75 °C/W vs. 110 °C/W), AEC-Q101 qualification, and halogen-free compliance-making it the preferred choice for new automotive and high-reliability SMT designs demanding full 1500 W capability without layout compromise.
Availability
SMCG48A-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, telecom DC input stages, and motor control gate drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for SMCG48A-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 optimization.
The SMCG series was developed for high-power, surface-mount transient suppression in automotive and industrial environments-delivering AEC-Q101-qualified robustness in a thermally enhanced DO-215AB package.
FAQ
What is the clamping voltage of SMCG48A-M3/57T at its rated peak pulse current?
The SMCG48A-M3/57T has a maximum clamping voltage (VC) of 77.4 V when subjected to its peak pulse current (IPPM) of 19.4 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects the actual voltage seen by protected circuitry during surge events. The clamping ratio (VC/VBR) is approximately 1.35, confirming tight regulation critical for safeguarding 80 V-tolerant ICs. SMCG48A-M3/57T maintains this performance across its full operating temperature range.
Is SMCG48A-M3/57T suitable for automotive applications?
Yes, SMCG48A-M3/57T is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, ADAS camera modules, and 48 V mild-hybrid power systems. Its M3 suffix denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, and its DO-215AB package supports MSL Level 1 reflow. SMCG48A-M3/57T passes extended temperature cycling, HTRB, and ESD tests required for under-hood deployment.
How does the SMCG48A-M3/57T differ from the SMAJ48A-E3/57T?
SMCG48A-M3/57T offers 1500 W peak pulse power in a thermally optimized DO-215AB package (RθJA = 75 °C/W), while SMAJ48A-E3/57T is rated for 400 W in the smaller DO-214AC (SMA) package (RθJA = 110 °C/W). Both share 48 V VWM, but SMCG48A-M3/57T adds AEC-Q101 qualification and halogen-free compliance. SMCG48A-M3/57T requires larger PCB copper pads for thermal performance, making it unsuitable as a direct footprint replacement for SMAJ48A-E3/57T.
What is the reverse leakage current specification for SMCG48A-M3/57T at 48 V?
At VWM = 48 V and TA = 25 °C, the maximum reverse leakage current (ID) for SMCG48A-M3/57T is 1.0 µA. This ultra-low leakage ensures minimal power loss and signal interference in high-impedance sensor bias networks or precision reference paths. Leakage remains within specification up to TJ = +150 °C, validated per Vishay's thermal characterization data. SMCG48A-M3/57T achieves this stability via glass-passivated junction technology.
Does SMCG48A-M3/57T have polarity marking, and how is it oriented on the PCB?
Yes, SMCG48A-M3/57T features a visible cathode band on the molded case, indicating the cathode (K) terminal. During PCB layout, the banded end must connect to the line being protected (e.g., 48 V rail), while the unmarked end (anode) connects to ground or the lower-potential reference. This orientation ensures proper unidirectional clamping action. Incorrect placement will prevent surge suppression and may cause catastrophic failure. SMCG48A-M3/57T polarity is confirmed in Vishay's mechanical drawings and ordering information tables.
SMCG48A-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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SMCG48A-M3/57T FAQ
1.How can I place an order for SMCG48A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48A-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 SMCG48A-M3/57T reliable?
The price and inventory of SMCG48A-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 SMCG48A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG48A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48A-M3/57T?
SMCG48A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48A-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 SMCG48A-M3/57T?
For technical support, including SMCG48A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48A-M3/57T requirements.
6.How does Aetrix verify that SMCG48A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG48A-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 SMCG48A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG48A-M3/57T?
All SMCG48A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48A-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 SMCG48A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG48A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG48A-M3/57T Tags
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