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Vishay General Semiconductor - Diodes Division SMCG54AHE3/9AT
- Part No.:
- SMCG54AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54AHE3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,423
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Product details
Overview
SMCG54AHE3/9AT 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 stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 17.2 A peak pulse current (IPPM), and clamps to 87.1 V at rated surge. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power systems.
For engineers reviewing the SMCG54AHE3/9AT datasheet, SMCG54AHE3/9AT pinout, SMCG54AHE3/9AT application, or SMCG54AHE3/9AT equivalent, this page delivers verified electrical parameters, mechanical package details, real-world protection use cases, and validated alternative parts - all aligned with Vishay's 09-Jan-2024 revision 88457 specification.
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 transient stress. Its 10/1000 µs waveform response ensures fast suppression of inductive switching spikes and ESD events up to 1500 W without thermal runaway.
Thermal design is supported by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation at TJ up to +150 °C when mounted on 8.0 mm × 8.0 mm copper pads. The device meets J-STD-020 MSL Level 1 and is qualified per AEC-Q101 for automotive under-hood applications.
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 IT = 1 mA - guaranteed avalanche onset range for predictable turn-on |
| VC @ IPPM | 87.1 V - clamping voltage during full 17.2 A 10/1000 µs surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood and industrial environments |
| Package | SMCG (DO-215AB) - surface-mount gull-wing package with matte tin leads, MSL Level 1 compliant |
Pinout & Package
SMCG54AHE3/9AT uses the SMCG (DO-215AB) package: low-profile, gull-wing leaded case with molded UL 94 V-0 compound. Polarity is marked by a cathode band; the banded end is the cathode (anode is unmarked). Leads are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground during overvoltage event |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use with temperature cycling, humidity, and mechanical shock compliance |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking; peak reflow temperature up to 260 °C supported |
| RoHS-compliant HE3 suffix | Meets industrial and automotive environmental requirements with no hazardous substance exemptions |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting gate drivers and MCU I/O lines in 12 V/24 V vehicle power modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed across power rail and ground near sensitive inputs. Use Value: Limits transient voltage to ≤87.1 V during 1500 W surges, preventing latch-up or permanent damage to 5 V/3.3 V logic interfaces. | Use Scenario: Safeguarding encoder feedback lines and analog sensor inputs in variable-frequency drives exposed to motor switching noise. IC Role / Device Role / Timing Role: Signal-line protector installed at connector entry point to shunt ESD and fast transients to chassis ground. Use Value: Sub-1 µA leakage at 54 V ensures no DC loading on high-impedance sensor outputs; 17.2 A IPPM handles repetitive commutation spikes. |
| Telecom DC Power Input | Consumer Appliance Control Board |
Use Scenario: Securing 48 V DC input stage of base station power supplies against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS connected between input rail and ground, upstream of DC/DC converters. Use Value: 1500 W PPPM rating provides single-event surge immunity per IEC 61000-4-5 Level 4 (4 kV), while DO-215AB footprint enables compact layout. | Use Scenario: Shielding microcontroller reset and communication lines (e.g., UART, I²C) in washing machine control boards from relay contact bounce and pump motor noise. IC Role / Device Role / Timing Role: Point-of-use clamping device placed directly at MCU pins with shortest possible trace length. Use Value: 87.1 V clamping voltage ensures safe margin below typical MCU absolute maximum ratings (e.g., 100 V), preserving functional safety. |
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), lower PPPM (400 W), SMA (DO-214AC) package, non-AEC-Q101 | Not suitable for automotive under-hood; limited to consumer/industrial board-level protection | Select when cost sensitivity outweighs automotive qualification and surge rating requirements |
| SMCJ54AHE3/9AT | Same VWM (54 V), higher PPPM (1500 W), identical AEC-Q101 qualification, but larger SMC (DO-214AB) package | Requires more PCB area; better thermal dissipation for sustained surge duty cycles | Prefer when layout allows larger footprint and higher thermal margin is needed beyond SMCG's 6.5 W PD limit |
Compared with SMAJ54A-E3/57T, SMCG54AHE3/9AT delivers automotive-grade reliability and triple the surge power handling in a smaller DO-215AB outline; versus SMCJ54AHE3/9AT, it trades 1.2 mm in body width for tighter board space while maintaining identical electrical protection specs and qualification.
Availability
SMCG54AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom DC input applications requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for SMCG54AHE3/9AT 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 optimization.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power, low-clamping transient suppression in space-constrained automotive and industrial systems where AEC-Q101 validation and consistent avalanche performance are mandatory.
FAQ
What is the clamping voltage of SMCG54AHE3/9AT at its rated peak pulse current?
The SMCG54AHE3/9AT clamps to 87.1 V at its specified peak pulse current (IPPM) of 17.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the maximum voltage seen by downstream circuitry during a full-rated surge event. The clamping performance is guaranteed across the operating temperature range and forms the basis for safe margin design in protected systems using SMCG54AHE3/9AT.
Is SMCG54AHE3/9AT suitable for automotive applications?
Yes, SMCG54AHE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity, and operation up to +150 °C junction temperature - all validated per AEC-Q101 test conditions. The HE3 suffix confirms RoHS compliance and automotive qualification, making SMCG54AHE3/9AT appropriate for engine control units, body electronics, and ADAS power domains.
What does the "HE3/9AT" suffix indicate in SMCG54AHE3/9AT?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "9AT" indicates packaging in a 13-inch diameter plastic tape and reel containing 3500 units - optimized for high-volume SMT assembly. This distinguishes SMCG54AHE3/9AT from variants like SMCG54A-E3/57T (7-inch reel, 850 units) and confirms full compliance with automotive and industrial sourcing requirements.
How does SMCG54AHE3/9AT compare to bidirectional TVS diodes with the same VWM?
SMCG54AHE3/9AT is unidirectional and intended for DC-coupled protection where polarity is fixed (e.g., +54 V rail to ground). Bidirectional equivalents like SMCG54CA have symmetric breakdown in both directions and are used in AC or floating signal lines. SMCG54AHE3/9AT offers lower leakage (<1.0 µA) and avoids ambiguity in grounding configuration - critical for precision analog and digital I/O protection where reverse conduction must be strictly controlled.
What is the thermal resistance of SMCG54AHE3/9AT, and how does it affect layout?
SMCG54AHE3/9AT has RθJA = 75 °C/W (junction-to-ambient) and RθJL = 15 °C/W (junction-to-lead), measured on the minimum recommended 8.0 mm × 8.0 mm copper pad per terminal. To maintain TJ ≤ 150 °C under 6.5 W steady-state dissipation, PCB layout must provide adequate copper area and airflow. For pulsed operation, thermal mass dominates - so even small pads suffice for short surges, but sustained multi-pulse events require careful thermal design around SMCG54AHE3/9AT.
SMCG54AHE3/9AT 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG54AHE3/9AT FAQ
1.How can I place an order for SMCG54AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54AHE3/9AT 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 SMCG54AHE3/9AT reliable?
The price and inventory of SMCG54AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG54AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG54AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54AHE3/9AT?
SMCG54AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54AHE3/9AT 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 SMCG54AHE3/9AT?
For technical support, including SMCG54AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54AHE3/9AT requirements.
6.How does Aetrix verify that SMCG54AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG54AHE3/9AT 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 SMCG54AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG54AHE3/9AT?
All SMCG54AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54AHE3/9AT, 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 SMCG54AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG54AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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