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Vishay General Semiconductor - Diodes Division SMCG54CAHE3/9AT
- Part No.:
- SMCG54CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54CAHE3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,361
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Product details
Overview
SMCG54CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 µs), 54 V stand-off voltage (VWM), and clamping voltage of 87.1 V at 17.2 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, power rails, and I/O interfaces against ESD and load dump transients.
For engineers reviewing the SMCG54CAHE3/9AT datasheet, SMCG54CAHE3/9AT pinout, SMCG54CAHE3/9AT application, or SMCG54CAHE3/9AT equivalent, this page delivers verified electrical parameters, mechanical package details, real-world protection use cases, and validated alternative parts for automotive-grade circuit hardening and industrial interface design.
Technical Context
The SMCG54CAHE3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±54 V in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior under repetitive transients, while low incremental surge resistance enables effective energy diversion during fast-rising events like ISO 7637-2 pulse 1/2a/5a.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation up to +150 °C junction temperature. The device meets J-STD-020 MSL Level 1 and is qualified per AEC-Q101 for automotive under-hood and chassis applications requiring long-term reliability under thermal cycling and humidity stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 48 V automotive systems. |
| VBR min/max | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamping voltage under 10/1000 µs surge; limits downstream IC stress to <90 V during 1500 W transient events. |
| PPPM | 1500 W - Peak pulse power rating per 10/1000 µs waveform; supports robust protection against ISO 16750-2 load dump and EFT bursts. |
| ID @ VWM | 1.0 µA - Reverse leakage at 54 V; negligible power loss and signal integrity impact in high-impedance sensor interfaces. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near hot components in engine control units and ADAS modules. |
| Package | SMCG (DO-215AB) - Surface-mount gull-wing package with 8.0 mm × 8.0 mm copper pad footprint; optimized for automated assembly and thermal dissipation. |
Pinout & Package
SMCG54CAHE3/9AT uses the SMCG (DO-215AB) surface-mount package: gull-wing leads, matte tin-plated terminals solderable per J-STD-002, no polarity marking (bidirectional), and UL 94 V-0 molding compound. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive surges and anode during negative surges; symmetrical conduction enables dual-polarity clamping without external polarity management. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional configuration; terminals are interchangeable; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in harsh environments. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without preconditioning-compatible with standard SMT lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (<1 ns rise time), critical for protecting high-speed CAN FD and LIN bus nodes. |
| 1500 W peak pulse power | Handles full ISO 7637-2 Pulse 5a (load dump) energy without degradation when mounted on recommended 8 mm × 8 mm pads. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input, shunting transients before they reach precision front-end circuitry. Use Value: Maintains signal fidelity below 54 V DC while limiting surge excursions to ≤87.1 V, preventing ADC saturation and latch-up in 3.3 V/5 V MCU domains. | Use Scenario: Safeguarding digital input channels of programmable logic controllers connected to 24 V field wiring subject to inductive switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS at terminal block entry point, absorbing 1500 W surges induced by solenoid de-energization. Use Value: Enables reliable operation in EN 61000-4-4 EFT testing (4 kV) and EN 61000-4-5 surge testing (2 kV line-earth) without system reset or data corruption. |
| Automotive Body Control Module | Telecom Power Interface |
Use Scenario: Protecting LIN bus transceivers and LED driver outputs in door module PCBs subjected to battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) bidirectional clamp across VBAT and ground, triggered only during >54 V excursions. Use Value: Prevents damage to 5 V LDOs and LIN PHYs during 12 V system faults while drawing negligible quiescent current in normal operation. | Use Scenario: Guarding 48 V PoE-powered equipment inputs against lightning-induced surges on telecom infrastructure lines. IC Role / Device Role / Timing Role: First-stage protector upstream of DC-DC converter, clamping common-mode surges before they propagate into isolated power stages. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W, extending mean time between failures in outdoor base station power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA | Same VWM (54 V) and PPPM (1500 W), but SMA (DO-214AC) package; lower thermal resistance (RθJA = 50 °C/W) but smaller pad area (5.5 mm × 4.5 mm). | Preferred where board space is constrained and thermal mass is limited; less suitable for high-reliability automotive under-hood mounting due to lower MSL rating (Level 1 not guaranteed). | Select SMAJ54CA for cost-sensitive industrial designs with moderate surge exposure and no AEC-Q101 requirement. |
| SMCJ54CA | Same VWM and PPPM, but larger SMC (DO-214AB) package; higher surge current rating (21.5 A) and improved thermal dissipation (RθJA = 35 °C/W), RoHS-compliant but not AEC-Q101 qualified. | Better suited for non-automotive high-power applications such as solar charge controllers and motor drives where sustained surge duty cycle exceeds automotive test profiles. | Choose SMCJ54CA when peak surge repetition rate or ambient temperature exceeds AEC-Q101 validation scope, and automotive qualification is not mandatory. |
Compared with SMAJ54CA and SMCJ54CA, SMCG54CAHE3/9AT uniquely combines AEC-Q101 qualification, DO-215AB gull-wing geometry for high-volume SMT placement, and optimized thermal-mechanical robustness for automotive sensor clusters-making it the preferred choice where qualification, manufacturability, and application-specific reliability are jointly required.
Availability
SMCG54CAHE3/9AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controller (PLC) I/O modules, and telecom power interface protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCG54CAHE3/9AT 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 engineered for high-energy transient suppression in automotive and industrial environments, targeting robustness against load dump, ESD, and EFT events while meeting stringent AEC-Q101 and RoHS requirements.
FAQ
What is the clamping voltage of SMCG54CAHE3/9AT at its rated peak pulse current?
The SMCG54CAHE3/9AT has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 17.2 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and confirmed in the Vishay datasheet revision 09-Jan-2024. The clamping performance ensures downstream circuitry remains within safe voltage limits during surge events, making SMCG54CAHE3/9AT suitable for protecting 48 V automotive subsystems and industrial 24 V control lines.
Is SMCG54CAHE3/9AT suitable for bidirectional signal line protection?
Yes, SMCG54CAHE3/9AT is explicitly designed as a bidirectional TVS diode, indicated by the "CA" suffix. Its symmetrical breakdown characteristics (VBR = 60.0–66.3 V in both directions) allow it to protect AC-coupled or differential signal paths-such as LIN bus, RS-485, or sensor bridge outputs-without polarity concerns. Unlike unidirectional variants, SMCG54CAHE3/9AT has no cathode band marking and delivers matched clamping in either polarity, simplifying layout and reducing BOM complexity in SMCG54CAHE3/9AT-based designs.
Does SMCG54CAHE3/9AT meet automotive qualification standards?
Yes, SMCG54CAHE3/9AT is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88457, Revision: 09-Jan-2024). The "HE3" suffix denotes RoHS compliance and AEC-Q101 qualification, validating its suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. This qualification covers stress tests such as temperature cycling, humidity bias, and mechanical shock-ensuring long-term reliability in demanding vehicular environments where SMCG54CAHE3/9AT is deployed.
What is the thermal resistance of SMCG54CAHE3/9AT, and how does it affect PCB layout?
SMCG54CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard FR-4 board material and no internal plane layers. To maintain safe junction temperatures under repetitive surge conditions, designers must allocate adequate copper area and avoid excessive trace length between SMCG54CAHE3/9AT and ground/power planes. Failure to meet pad size requirements will increase RθJA, risking thermal runaway during high-duty-cycle transients.
How does the "9AT" packaging suffix affect ordering and handling of SMCG54CAHE3/9AT?
The "9AT" suffix indicates that SMCG54CAHE3/9AT is supplied in 13-inch diameter plastic tape and reel packaging, with a base quantity of 3500 units per reel. This format supports high-speed pick-and-place assembly and is compatible with standard SMT feeders. Unlike smaller reels (e.g., "57T" = 7-inch, 850 units), the 9AT configuration reduces changeover frequency in volume production. The part remains fully RoHS compliant and AEC-Q101 qualified regardless of reel size-SMCG54CAHE3/9AT's electrical and reliability specifications are unchanged across packaging variants.
SMCG54CAHE3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG54CAHE3/9AT FAQ
1.How can I place an order for SMCG54CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54CAHE3/9AT 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 SMCG54CAHE3/9AT reliable?
The price and inventory of SMCG54CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG54CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG54CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54CAHE3/9AT?
SMCG54CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54CAHE3/9AT 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 SMCG54CAHE3/9AT?
For technical support, including SMCG54CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG54CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG54CAHE3/9AT 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 SMCG54CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG54CAHE3/9AT?
All SMCG54CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54CAHE3/9AT, 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 SMCG54CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG54CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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