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Vishay General Semiconductor - Diodes Division SMCG54A-E3/9AT
- Part No.:
- SMCG54A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54A-E3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,080
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Product details
Overview
SMCG54A-E3/9AT 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 a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 µs. It clamps transients to ≤87.1 V at 17.2 A IPPM and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMCG54A-E3/9AT datasheet, SMCG54A-E3/9AT pinout, SMCG54A-E3/9AT application, or SMCG54A-E3/9AT equivalent, this device is selected for robust overvoltage protection on DC power rails, MOSFET gate drivers, and sensor signal lines where fast response (<1 ns), low clamping ratio, and automotive-grade reliability are required.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging glass-passivated junction technology for stable breakdown characteristics and low incremental surge resistance. Its 1500 W PPPM rating is validated under JEDEC-standard 10/1000 µs waveform conditions with derating above TA = 25 °C per Fig. 2 of the datasheet.
The device exhibits 1.0 µA maximum reverse leakage at VWM = 54 V and achieves clamping voltage VC = 87.1 V at IPPM = 17.2 A - yielding a clamping ratio (VC/VBR) of ~1.45, indicating strong suppression efficiency. Thermal resistance is RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads), supporting operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 60.0–66.3 V at IT = 1.0 mA - Tight tolerance ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 87.1 V at IPPM = 17.2 A - Actual voltage seen by protected circuit during 1500 W surge event. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains standardized 10/1000 µs surge without failure; enables protection against IEC 61000-4-5 Level 4. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible standby current avoids power loss or false triggering in low-power systems. |
| TJ max | 150 °C - Enables use in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount package with matte tin-plated leads; meets UL 94 V-0, MSL Level 1 (260 °C peak reflow), and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential node in unidirectional configuration | Provides low-impedance path to ground during transient events; polarity marked by cathode band on package body. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 54 V rail or signal trace) | Defines directionality: clamps positive transients to ground; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast response time | <1 ns - Limits voltage overshoot before clamping engages, critical for protecting fast-switching MOSFETs and IC inputs. |
| Glass-passivated junction | Stable VBR over lifetime and temperature - eliminates parameter drift due to moisture ingress or thermal stress. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 27 V) - reduces stress on downstream components compared to higher-Rsurge TVS devices. |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics - supports long-term deployment in harsh thermal/vibration environments. |
| RoHS-compliant, halogen-free option available | E3 suffix indicates RoHS compliance and industrial grade - meets environmental requirements for global OEM BOMs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V–60 V battery-supplied ECUs against load dump and alternator surge. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive transients. Use Value: Withstands 1500 W surges and maintains clamping below 87.1 V, preventing damage to 75 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive kickback in factory automation sensors. IC Role / Device Role / Timing Role: TVS mounted directly at connector interface to shunt transients before reaching precision op-amps or ADC front-ends. Use Value: 1.0 µA leakage at 54 V avoids loading low-current sensor outputs; 87.1 V clamping preserves integrity of 60 V-rated instrumentation amplifiers. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Stage |
|
Use Scenario: Shielding high-side N-channel MOSFET gates driven by isolated gate drivers in motor control inverters. IC Role / Device Role / Timing Role: Unidirectional clamp from gate-to-source, referenced to driver's local ground. Use Value: Sub-1 ns response prevents gate oxide rupture during fast dv/dt events; 66.3 V VBR aligns with typical 65 V gate driver ratings. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: TVS configured cathode-to-rail to clamp negative surges (with complementary device) or used in unidirectional mode for positive excursions. Use Value: 1500 W PPPM meets GR-1089-CORE Level 4 requirements; DO-215AB package allows automated placement in high-density telecom PCBs. |
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), same DO-214AC (SMA) package; lower PPPM (400 W), higher VC (93.6 V at 4.3 A) | Not suitable for 1500 W surge environments; limited to lower-energy IEC 61000-4-2/4-4 events | Select when board space constraints favor SMA footprint and surge energy is ≤400 W. |
| SMCJ54A-E3/9AT | Same VWM (54 V), same DO-214AB (SMC) package; identical PPPM (1500 W), slightly higher VC (88.0 V at 17.0 A) | Compatible with same PCB layout only if pad dimensions match DO-214AB (larger than SMCG); higher thermal mass | Choose when existing SMC footprint is fixed and AEC-Q101 qualification is not mandatory (SMCJ series is industrial-grade only). |
Compared with SMAJ54A-E3/57T, SMCG54A-E3/9AT delivers 3.75× higher surge power handling and tighter clamping; versus SMCJ54A-E3/9AT, it offers identical surge capability in a 30% smaller DO-215AB footprint and adds AEC-Q101 qualification - making it optimal for space-constrained automotive modules.
Availability
SMCG54A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, MOSFET gate driver protection, and telecom DC power input stage applications requiring stable component supply and AEC-Q101 compliance.
Supply support for SMCG54A-E3/9AT 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 was developed to deliver high-power transient suppression in compact surface-mount packages for automotive and industrial systems where space, thermal performance, and qualification rigor are critical.
FAQ
What is the clamping voltage of the SMCG54A-E3/9AT at its rated peak pulse current?
The SMCG54A-E3/9AT has a maximum clamping voltage (VC) of 87.1 V at its peak pulse current (IPPM) of 17.2 A, measured under the standard 10/1000 µs waveform. This value is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88457 and defines the upper voltage limit imposed on protected circuits during surge events. The SMCG54A-E3/9AT maintains this clamping performance across its qualified operating temperature range.
Is the SMCG54A-E3/9AT suitable for automotive applications?
Yes, the SMCG54A-E3/9AT is AEC-Q101 qualified, as explicitly stated in the Mechanical Data section and noted in the Ratings and Characteristics Curves footnote (1) of the Vishay datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making the SMCG54A-E3/9AT appropriate for under-hood and body electronics in passenger vehicles and commercial vehicles.
What does the "E3/9AT" suffix indicate in SMCG54A-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "9AT" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This ordering code is defined in the Ordering Information table on page 3 of Vishay document 88457 and confirms full compliance with lead-free assembly standards and automated pick-and-place compatibility.
How does the SMCG54A-E3/9AT compare to bidirectional TVS diodes like SMCG54CA?
The SMCG54A-E3/9AT is unidirectional and features a cathode band marking; it conducts only during positive transients relative to its cathode. In contrast, SMCG54CA is bidirectional with no polarity marking and clamps both polarities. The SMCG54A-E3/9AT offers lower leakage (1.0 µA vs. 1000 µA for SMCG54CA at VWM) and is preferred for DC rail protection where polarity is fixed and leakage must be minimized.
What is the thermal resistance of the SMCG54A-E3/9AT, and how does it affect layout design?
The SMCG54A-E3/9AT 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, as specified in the Thermal Characteristics table. This value requires adherence to the recommended pad layout to ensure safe operation at full 1500 W surge rating and continuous 6.5 W dissipation - underscoring the need for adequate copper area and thermal vias in production PCBs using the SMCG54A-E3/9AT.
SMCG54A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SMCG54A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54A-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCG54A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG54A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG54A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54A-E3/9AT?
SMCG54A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54A-E3/9AT 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-E3/9AT?
For technical support, including SMCG54A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54A-E3/9AT requirements.
6.How does Aetrix verify that SMCG54A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG54A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG54A-E3/9AT?
All SMCG54A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG54A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG54A-E3/9AT Tags
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