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Vishay General Semiconductor - Diodes Division SMCG30A-E3/57T
- Part No.:
- SMCG30A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30A-E3/57T.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,036
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Product details
Overview
SMCG30A-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for high-energy surge protection 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 in automotive and industrial power electronics.
For engineers reviewing the SMCG30A-E3/57T datasheet, SMCG30A-E3/57T pinout, SMCG30A-E3/57T application, or SMCG30A-E3/57T equivalent, this device is selected for robust 10/1000 μs surge immunity, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive transients. Its thermal resistance (RθJA = 75 °C/W) and junction temperature range (–55 to +150 °C) support operation in thermally constrained automotive ECUs and industrial motor drives.
The device meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, with MSL Level 1 rating and 260 °C lead-free reflow compatibility. Its 10/1000 μs waveform response ensures effective suppression of inductive switching spikes and lightning-induced surges in DC power rails and I/O interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 24 V rail. |
| VBR @ IT = 1 mA | 33.3–36.8 V - Breakdown threshold range defining reliable avalanche initiation; tight tolerance enables predictable protection onset. |
| VC @ IPPM = 31.0 A | 48.4 V - Clamped voltage during 1500 W surge; limits downstream stress on 3.3 V/5 V logic and gate drivers. |
| PPPM (10/1000 μs) | 1500 W - Peak surge energy handling capacity; supports IEC 61000-4-5 Level 4 compliance in compact footprint. |
| ID @ VWM | 1.0 μA - Ultra-low leakage at stand-off voltage; preserves battery life and avoids false triggering in always-on circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| RθJA | 75 °C/W - Thermal resistance to ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements for sustained surge duty. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount case with matte tin-plated leads, UL 94 V-0 molding compound, and polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line (e.g., 24 V supply rail) | Provides low-forward-voltage path during fault; must be routed with minimal inductance to avoid voltage overshoot. |
| Cathode | Current exit terminal in forward bias; tied to ground or lower-potential reference | Band-marked end; defines unidirectional clamping direction; requires solid ground plane connection for effective surge shunting. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to moisture ingress, critical for long-term field deployment in harsh environments. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt conditions, improving clamping precision for fast-rising transients like relay coil flyback. |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without preconditioning; compatible with standard SMT production lines. |
| UL 497B recognized (QVGQ2) | Confirms suitability for telecom and industrial signal-line protection per safety-critical surge protector classification. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs to body control modules (BCMs) against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed at board-level input filter stage. Use Value: Limits voltage to ≤48.4 V during 1500 W surges, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff-mode protector between sensor output and PLC input, responding within <1 ns. Use Value: Maintains signal integrity with only 1.0 μA leakage at 30 V, while clamping ESD events up to ±30 kV contact discharge. |
| Motor Drive Gate Driver Protection | Telecom DC Power Feeds |
|
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers in BLDC inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response clamp across gate-to-source terminals during switching transitions. Use Value: Sub-1 ns response time and low Rsurge ensure gate voltage stays within ±20 V absolute maximum, avoiding unintended turn-on. |
Use Scenario: Surge suppression on -48 V DC feeding lines in central office telecom equipment compliant with GR-1089-CORE. IC Role / Device Role / Timing Role: Primary-level TVS on power entry board, coordinated with upstream GDTs and downstream filters. Use Value: Withstands repeated 10/1000 μs surges up to 1500 W while maintaining VWM = 30 V for compatibility with -48 V nominal systems. |
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-E3/57T | Same VWM (30 V) and PPPM (400 W), but lower power rating; SMA package (DO-214AC), larger RθJA (110 °C/W). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W is required. | Select SMCG30A-E3/57T when 1500 W surge handling and AEC-Q101 qualification are mandatory. |
| SMCJ30A-E3/57T | Same VWM (30 V) and PPPM (1500 W), but SMC package (DO-214AB); higher RθJA (85 °C/W), no AEC-Q101 qualification. | Acceptable for industrial use but not certified for automotive; less robust thermal performance on identical PCB layout. | Choose SMCG30A-E3/57T for space-constrained automotive designs requiring MSL Level 1 and AEC-Q101 compliance. |
Compared with SMAJ30A-E3/57T and SMCJ30A-E3/57T, the SMCG30A-E3/57T delivers identical 30 V standoff and 1500 W surge capability in a smaller DO-215AB outline, with verified AEC-Q101 qualification and superior thermal resistance (75 °C/W), making it optimal for next-generation automotive and high-density industrial PCBs.
Availability
SMCG30A-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, motor drive gate driver protection, and telecom DC power feeds requiring stable component supply and full traceability.
Supply support for SMCG30A-E3/57T 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 for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems, prioritizing low clamping voltage, fast response, and AEC-Q101 compliance without sacrificing surge robustness.
FAQ
What is the clamping voltage of the SMCG30A-E3/57T under a 10/1000 μs surge?
The SMCG30A-E3/57T has a maximum clamping voltage (VC) of 48.4 V at 31.0 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions on minimum recommended 8 mm × 8 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG30A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the SMCG30A-E3/57T suitable for automotive applications?
Yes, the SMCG30A-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C junction temperature range, MSL Level 1 reflow compatibility, and UL 497B recognition support deployment in BCMs, ADAS power supplies, and motor control units. The SMCG30A-E3/57T meets stringent automotive reliability and safety requirements without derating.
What does the "E3/57T" suffix indicate in SMCG30A-E3/57T?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "57T" specifies packaging in 7-inch diameter plastic tape and reel, with a base quantity of 850 units per reel. This configuration ensures compatibility with high-speed pick-and-place equipment and supports automated manufacturing. The SMCG30A-E3/57T is optimized for volume SMT production with J-STD-002 solderability certification.
How does the SMCG30A-E3/57T compare to bidirectional TVS diodes with the same VWM?
The SMCG30A-E3/57T is unidirectional and features a cathode band for polarity identification, unlike bidirectional variants (e.g., SMCG30CA) that suppress surges in both directions without polarity marking. Its forward characteristics (VF = 3.5 V at 100 A) apply only during fault conduction, whereas bidirectional types lack defined forward drop. The SMCG30A-E3/57T is selected when protection is needed only on positive-going transients relative to ground.
What is the thermal resistance of the SMCG30A-E3/57T, and how does it affect layout design?
The SMCG30A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB with no internal copper planes; adding thermal vias or ground-plane connections reduces effective RθJA. Layout must allocate sufficient copper area to maintain TJ ≤ 150 °C during repetitive surge events. The SMCG30A-E3/57T's thermal performance directly impacts sustained surge duty cycle capability.
SMCG30A-E3/57T 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-E3/57T FAQ
1.How can I place an order for SMCG30A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30A-E3/57T 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-E3/57T reliable?
The price and inventory of SMCG30A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG30A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG30A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30A-E3/57T?
SMCG30A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30A-E3/57T 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-E3/57T?
For technical support, including SMCG30A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30A-E3/57T requirements.
6.How does Aetrix verify that SMCG30A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG30A-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG30A-E3/57T?
All SMCG30A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30A-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SMCG30A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30A-E3/57T Tags
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