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Vishay General Semiconductor - Diodes Division SMCG54A-E3/57T
- Part No.:
- SMCG54A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54A-E3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,026
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Product details
Overview
SMCG54A-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range (VBR), 1500 W peak pulse power (PPPM), and clamps to ≤87.1 V at 17.2 A surge current - deployed on automotive power lines, industrial sensor interfaces, and DC power rails.
For engineers reviewing the SMCG54A-E3/57T datasheet, SMCG54A-E3/57T pinout, SMCG54A-E3/57T application, or SMCG54A-E3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1500 W 10/1000 µs surge capability, low RθJA (75 °C/W), and RoHS-compliant E3 termination for high-reliability surface-mount deployment.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its VBR (60.0–66.3 V), limiting transient energy to protected circuitry. Its glass-passivated junction ensures stable breakdown behavior and fast response (<1 ns), while the DO-215AB package supports automated placement and meets UL 94 V-0 flammability rating.
The device sustains 200 A non-repetitive forward surge current (IFSM) and operates across -55 °C to +150 °C junction temperature. Thermal resistance values (RθJA = 75 °C/W, RθJL = 15 °C/W) confirm suitability for moderate-power PCB layouts with 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 60.0 V / 66.3 V at 1.0 mA - precise breakdown threshold enabling predictable protection onset |
| PPPM | 1500 W (10/1000 µs waveform) - high-energy transient suppression for automotive load-dump and inductive switching events |
| VC @ IPPM | ≤87.1 V at 17.2 A - clamping voltage defines worst-case stress on downstream ICs during surge |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max. | +150 °C - enables use in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with cathode band marking; 0.220–0.245 inch body length, 0.115–0.125 inch width, 0.024–0.040 inch height; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance |
| Cathode | Current exit point in forward bias; marked by band; connected to protected line | Receives transient energy from I/O or power rail; polarity-critical - reverse connection disables protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power supplies |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking or special handling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and transportation end equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground. Use Value: Clamps transients to ≤87.1 V within nanoseconds, preventing damage to MCU power inputs rated for 60 V absolute maximum. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Point-of-entry protection on 4–20 mA loop or 0–10 V analog output lines. Use Value: 1.0 µA leakage at 54 V avoids loading precision DACs or op-amp buffers in measurement circuits. |
| DC-DC Converter Input Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Shielding buck converter inputs in PoE-powered devices from Ethernet cable-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input filter capacitor and controller IC. Use Value: 1500 W PPPM handles repetitive 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation. |
Use Scenario: Front-end protection in telecom base station DC distribution boards subjected to lightning-induced surges on -48 V supply rails. IC Role / Device Role / Timing Role: Secondary-level TVS after primary gas discharge tube (GDT), providing fast clamping. Use Value: 75 °C/W RθJA allows thermal design with standard 8 mm × 8 mm pads - no heatsink required for intermittent surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T | Same VWM (54 V) and PPPM (400 W), but lower surge rating (IPPM = 5.5 A); SMA (DO-214AC) package, smaller footprint | Limited to lower-energy transients (e.g., ESD, board-level noise); unsuitable for load-dump or IEC 61000-4-5 Level 4 | Select SMAJ54A-E3/57T only when space-constrained and surge energy <400 W is sufficient. |
| SMCJ54A-E3/57T | Same VWM (54 V) and higher PPPM (1500 W), identical DO-214AB package; slightly higher VBR (60.0–69.3 V) and VC (87.1 V) | Functionally interchangeable in most 1500 W designs; differs in JEDEC registration (SMCJ vs SMCG) and minor thermal profile | SMCJ54A-E3/57T offers same protection level with broader industry familiarity; verify layout compatibility with SMCG's gull-wing leadform. |
Compared with SMAJ54A-E3/57T and SMCJ54A-E3/57T, the SMCG54A-E3/57T delivers identical 1500 W surge capability in a gull-wing DO-215AB package optimized for automated placement and AEC-Q101 compliance - making it preferred for automotive and high-reliability industrial deployments where mechanical robustness and qualification traceability are mandatory.
Availability
SMCG54A-E3/57T is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, and DC-DC converter input surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG54A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMCG series targets high-energy transient suppression in automotive and industrial systems, engineered for AEC-Q101 compliance, low clamping voltage, and robust thermal performance in surface-mount formats.
FAQ
What is the clamping voltage of SMCG54A-E3/57T at its rated peak pulse current?
The SMCG54A-E3/57T clamps to a maximum of 87.1 V at its specified peak pulse current of 17.2 A (10/1000 µs waveform). This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG54A-E3/57T maintains this clamping performance across its qualified operating temperature range.
Is SMCG54A-E3/57T suitable for automotive applications?
Yes, SMCG54A-E3/57T is AEC-Q101 qualified and explicitly designed for automotive use cases including engine control units, body electronics, and ADAS sensor power rails. Its construction - glass-passivated junction, MSL Level 1 rating, and operation up to +150 °C - meets stringent automotive reliability requirements. The SMCG54A-E3/57T also complies with UL 94 V-0 and RoHS standards, supporting safety-critical deployment.
What does the "E3/57T" suffix indicate in SMCG54A-E3/57T?
The "E3" suffix denotes RoHS-compliant, industrial-grade termination with matte tin plating; "57T" specifies the packaging format: 7-inch diameter plastic tape and reel containing 850 units. This configuration ensures compatibility with high-speed pick-and-place equipment and supports automated manufacturing. The SMCG54A-E3/57T ordering code reflects Vishay's standardized industrial-grade variant - distinct from HE3 (AEC-Q101) or M3 (halogen-free) versions.
How does SMCG54A-E3/57T differ from bidirectional TVS diodes like SMCG54CA?
SMCG54A-E3/57T is unidirectional and features a cathode band marking, intended for DC line protection where polarity is fixed (e.g., +12 V rail to ground). In contrast, SMCG54CA is bidirectional with no polarity marking and symmetric clamping in both directions - suited for AC signal lines or differential buses. The SMCG54A-E3/57T has a forward voltage drop (~3.5 V at 100 A), while SMCG54CA does not conduct forward current in normal operation.
What thermal design guidance applies to SMCG54A-E3/57T in PCB layout?
For optimal thermal performance, SMCG54A-E3/57T requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal as specified in the datasheet. Its RθJA of 75 °C/W assumes this layout; reducing pad size increases junction temperature and de-rates surge capability. Avoid thermal relief spokes on high-current paths, and ensure uninterrupted copper beneath the device body. The SMCG54A-E3/57T does not require external heatsinking for typical 1500 W transient duty cycles.
SMCG54A-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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 17.2A
- 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)
SMCG54A-E3/57T FAQ
1.How can I place an order for SMCG54A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54A-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 SMCG54A-E3/57T reliable?
The price and inventory of SMCG54A-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 SMCG54A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG54A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54A-E3/57T?
SMCG54A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54A-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 SMCG54A-E3/57T?
For technical support, including SMCG54A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54A-E3/57T requirements.
6.How does Aetrix verify that SMCG54A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG54A-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 SMCG54A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG54A-E3/57T?
All SMCG54A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54A-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 SMCG54A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG54A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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