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Vishay General Semiconductor - Diodes Division SMCG30A-M3/57T
- Part No.:
- SMCG30A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30A-M3/57T.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,645
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Product details
Overview
SMCG30A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in the SMCG (DO-215AB) package, with 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage (VC) at 31.0 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the SMCG30A-M3/57T datasheet, SMCG30A-M3/57T pinout, SMCG30A-M3/57T application, or SMCG30A-M3/57T equivalent, this device is evaluated for robust surge immunity in 12 V/24 V DC systems, compliance with AEC-Q101, halogen-free RoHS construction, and thermal performance under 75 °C/W junction-to-ambient resistance on standard 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with glass-passivated silicon junction and low incremental surge resistance. Its unidirectional polarity features a cathode band marking, and it delivers sub-nanosecond response to 10/1000 μs transients while maintaining <1.0 μA reverse leakage at 30 V.
The SMCG30A-M3/57T is rated for 200 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and supports continuous power dissipation of 6.5 W at TA = 50 °C. Junction temperature range spans –55 °C to +150 °C, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 33.3 V / 36.8 V - breakdown occurs within this range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 48.4 V - clamped voltage across device during 31.0 A 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling capability, enabling protection against high-energy surges |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting inrush and fault-current resilience |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8.0 mm × 8.0 mm pad layout |
| Polarity | Unidirectional - cathode marked with band; blocks reverse current until breakdown, conducts forward like rectifier |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, surface-mount gull-wing package with matte tin-plated leads, UL 94 V-0 molding compound, and AEC-Q101 qualification. Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential side (e.g., ground or return path); enables clamping when cathode-side voltage exceeds VBR |
| Cathode | Reverse-biased terminal (marked with band) | Connects to protected line (e.g., 12 V rail or signal trace); initiates avalanche conduction during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JEDEC standards |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance requirements without brominated flame retardants; suitable for green manufacturing |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio ≈ 1.45), reducing voltage overshoot seen by protected ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume SMT assembly |
| Glass passivated chip junction | Provides stable, repeatable avalanche characteristics and long-term parameter stability under repeated surge stress |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
|
Use Scenario: Protection of 12 V/24 V supply rails in body control modules (BCM), junction boxes, and lighting drivers against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and downstream DC-DC converter input or microcontroller power pin. Use Value: Clamps transients up to 48.4 V at 31 A, preventing latch-up or damage to 36 V-rated regulators and logic ICs. |
Use Scenario: Surge suppression on gate drive signal lines and feedback paths in IGBT/MOSFET-based variable-frequency drives (VFDs). IC Role / Device Role / Timing Role: Fast-response clamp on isolated gate driver outputs or current-sense amplifier inputs exposed to switching noise. Use Value: Sub-ns response and 1500 W PPPM withstand capability ensure signal integrity during high-dI/dt commutation events. |
| Telecom DC Power Interface | Automotive Sensor Signal Conditioning |
|
Use Scenario: Input protection for PoE-powered equipment and telecom base station DC inputs subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input stage upstream of DC-DC conversion and hot-swap controllers. Use Value: Withstands 1500 W pulses and maintains <1.0 μA leakage at 30 V, minimizing standby power loss in always-on systems. |
Use Scenario: ESD and transient protection for analog output lines (e.g., 0–5 V throttle position or temperature sensor signals) in engine control units (ECUs). IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed directly at connector interface before signal conditioning op-amps. Use Value: 48.4 V clamping ensures sensor ICs with 5.5 V absolute max ratings remain within safe operating limits during ISO 7637-2 Pulse 1/2a events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM (30 V) and VC (48.4 V), but SMA (DO-214AC) package; RθJA = 85 °C/W; not AEC-Q101 qualified | Limited to industrial/commercial use; less robust thermal performance on identical PCB layout | Select SMAJ30A only if AEC-Q101 is not required and board space allows larger SMA footprint. |
| SMCJ30A | Higher PPPM (3000 W), same VWM/VC, but larger SMC (DO-214AB) package; RθJA = 40 °C/W; AEC-Q101 qualified (HE3/HM3 variants) | Supports higher surge repetition rates and longer pulse durations; requires more PCB area | Choose SMCJ30A when system-level surge testing exceeds IEC 61000-4-5 Level 4 or repetitive surge duty is expected. |
Compared with SMAJ30A and SMCJ30A, the SMCG30A-M3/57T offers optimal balance of AEC-Q101 compliance, compact DO-215AB footprint, and 1500 W surge rating-making it ideal for space-constrained automotive modules where thermal management is moderate and qualification is mandatory.
Availability
SMCG30A-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, and telecom DC interface applications requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMCG30A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was developed to deliver high-power transient suppression in compact, automotive-qualified surface-mount packages-targeting next-generation ECUs, ADAS power systems, and industrial automation controllers demanding robustness and regulatory compliance.
FAQ
What is the clamping voltage of SMCG30A-M3/57T and how is it measured?
The clamping voltage (VC) of SMCG30A-M3/57T is 48.4 V, measured at 31.0 A peak pulse current using the standardized 10/1000 μs double-exponential waveform per ANSI/IEEE C62.35. This value represents the maximum voltage that appears across the device during a surge event, ensuring downstream components see limited overvoltage stress. The SMCG30A-M3/57T achieves this with low incremental resistance and stable avalanche behavior due to its glass-passivated junction.
Is SMCG30A-M3/57T suitable for automotive applications?
Yes, SMCG30A-M3/57T is AEC-Q101 qualified and built with halogen-free, RoHS-compliant materials (M3 suffix), making it suitable for automotive power electronics including body control modules, lighting drivers, and sensor interfaces. Its operating junction temperature range of –55 °C to +150 °C, MSL Level 1 rating, and validated surge performance align with automotive environmental and reliability requirements. The SMCG30A-M3/57T is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What does the "M3" suffix mean in SMCG30A-M3/57T?
The "M3" suffix in SMCG30A-M3/57T indicates halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance requirements. It denotes industrial-grade qualification with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Unlike "E3", "M3" excludes brominated flame retardants while retaining full electrical and thermal specifications of the SMCG30A-M3/57T device.
How does SMCG30A-M3/57T differ from bidirectional versions like SMCG30CA?
SMCG30A-M3/57T is unidirectional, featuring a cathode band and conducting only in forward bias beyond VBR, whereas SMCG30CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The SMCG30A-M3/57T has lower reverse leakage (<1.0 μA at 30 V) and supports forward surge current (IFSM = 200 A), while SMCG30CA lacks IFSM rating and exhibits higher leakage in both directions. Use SMCG30A-M3/57T for DC rail protection and SMCG30CA for AC or differential signal line protection.
What PCB layout guidance applies to SMCG30A-M3/57T for optimal thermal performance?
For optimal thermal performance, SMCG30A-M3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This layout yields the rated RθJA of 75 °C/W. Reducing pad size increases thermal resistance and risks junction overheating during repeated surges. Thermal vias under pads and internal copper planes further improve heat dissipation. The SMCG30A-M3/57T datasheet Fig. 2 provides derating curves for elevated ambient temperatures.
SMCG30A-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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)
SMCG30A-M3/57T FAQ
1.How can I place an order for SMCG30A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30A-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 SMCG30A-M3/57T reliable?
The price and inventory of SMCG30A-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 SMCG30A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG30A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30A-M3/57T?
SMCG30A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30A-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 SMCG30A-M3/57T?
For technical support, including SMCG30A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30A-M3/57T requirements.
6.How does Aetrix verify that SMCG30A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG30A-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 SMCG30A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG30A-M3/57T?
All SMCG30A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30A-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 SMCG30A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG30A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30A-M3/57T Tags
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