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Vishay General Semiconductor - Diodes Division SMCG64AHE3/9AT
- Part No.:
- SMCG64AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG64AHE3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,528
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Product details
Overview
SMCG64AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, with 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 14.6 V clamping voltage (VC) at 14.6 A IPPM. It protects MOSFETs and signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SMCG64AHE3/9AT datasheet, SMCG64AHE3/9AT pinout, SMCG64AHE3/9AT application, or SMCG64AHE3/9AT equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification for automotive use, RoHS compliance with matte tin leads, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its low incremental surge resistance and 1500 W PPPM rating enable robust protection of 12 V/24 V automotive electronics without derating below 125 °C junction temperature.
The device operates unidirectionally with cathode-band polarity marking, supports 200 A IFSM (8.3 ms half-sine), and maintains stable clamping up to TJ = 150 °C. Thermal resistance is RθJA = 75 °C/W (on recommended pad layout) and RθJL = 15 °C/W, enabling reliable operation without external heatsinking in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 71.1 V / 78.6 V at 1 mA - ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 103 V at 14.6 A - limits downstream voltage stress during 10/1000 µs surge events |
| PPPM | 1500 W - sustains high-energy transients common in automotive load-dump and inductive kick scenarios |
| TJ max | +150 °C - enables deployment in engine bay and powertrain modules without thermal derating penalties |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMCG (DO-215AB) - surface-mount gull-wing leadform compatible with IPC-7351B footprint and J-STD-020 reflow profiles |
Pinout & Package
SMCG64AHE3/9AT uses the SMCG (DO-215AB) package: a low-profile, gull-wing surface-mount outline with two terminals, matte tin-plated leads, and UL 94 V-0 molding compound. Polarity is marked by a cathode band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to protected circuit ground or low-side return path during transient suppression |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to line being protected (e.g., 12 V rail or sensor input); clamps to this node during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) over lifetime and temperature |
| MSL Level 1 | Allows unlimited floor life and standard reflow without baking per J-STD-020 |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS subsystems |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during surge, reducing stress on downstream ICs like microcontrollers and gate drivers |
| RoHS-compliant HE3 suffix | Meets automotive environmental requirements with matte tin plating and no halogen restrictions |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V supply rails in engine control units (ECUs) from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role: Unidirectional TVS placed between battery rail and local regulator input. Use Value: Clamps 103 V at 14.6 A, limiting regulator input stress to safe levels while surviving repeated 1500 W surges. | Use Scenario: Safeguarding analog input channels of PLC analog I/O modules from field-wiring induced surges. IC Role / Device Role: Line-side TVS on 4–20 mA current loop inputs exposed to long cable runs. Use Value: Sub-1 ns response prevents op-amp saturation; 64 V VWM avoids false triggering during normal 24 V operation. |
| Automotive Body Electronics | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers in door module ECUs from electrostatic discharge and relay coil flyback. IC Role / Device Role: TVS mounted directly at connector pins to shunt transients before entering transceiver IC. Use Value: 1500 W PPPM handles worst-case inductive spikes; AEC-Q101 ensures reliability over 15-year vehicle lifecycle. | Use Scenario: Protecting DC power input of PoE-powered network switches from AC mains coupling and lightning surges. IC Role / Device Role: Primary overvoltage clamp on 48 V DC input stage upstream of DC/DC converter. Use Value: 103 V clamping voltage provides sufficient margin above 48 V nominal while meeting IEC 61000-4-5 Level 4 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | Same VWM/VBR/VC specs but SMA (DO-214AC) package; lower PPPM (400 W); RθJA = 110 °C/W | Not AEC-Q101 qualified; suited for consumer/industrial, not automotive under-hood | Select when cost or board space is prioritized over automotive qualification and surge energy handling |
| 1.5KE68A | Through-hole DO-201 package; higher VBR (75.6–83.6 V); same 1500 W PPPM; no AEC-Q101 | Requires wave soldering; incompatible with automated SMT; larger footprint | Select only for legacy through-hole designs where rework to SMT is impractical |
Compared with SMAJ64A-E3/57T and 1.5KE68A, SMCG64AHE3/9AT delivers automotive-grade reliability, superior thermal performance (RθJA = 75 °C/W), and full SMT compatibility-making it the optimal choice for new automotive and high-reliability industrial designs requiring AEC-Q101 and 1500 W surge capability.
Availability
SMCG64AHE3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive interfaces, and telecom power input protection requiring stable component supply and full traceability.
Supply support for SMCG64AHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was designed specifically for high-energy transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile SMT packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SMCG64AHE3/9AT and how is it measured?
The clamping voltage (VC) of SMCG64AHE3/9AT is 103 V, measured at a peak pulse current (IPPM) of 14.6 A using a standardized 10/1000 µs double-exponential waveform. This value reflects the maximum voltage seen across the device during surge conditions and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMCG64AHE3/9AT achieves this clamping level while dissipating 1500 W of transient energy.
Is SMCG64AHE3/9AT suitable for automotive applications?
Yes, SMCG64AHE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, glass-passivated junction, and MSL Level 1 moisture sensitivity make it appropriate for engine control units, body control modules, and ADAS power supplies. The HE3 suffix confirms RoHS compliance and automotive qualification per Vishay's ordering nomenclature.
What does the "HE3" and "9AT" suffix mean in SMCG64AHE3/9AT?
In SMCG64AHE3/9AT, "HE3" denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads; "9AT" specifies packaging in 13-inch diameter tape-and-reel format with 3500 units per reel. This configuration supports high-volume SMT assembly and meets automotive traceability requirements, distinguishing it from industrial-grade E3 variants or smaller 7-inch reels (e.g., /57T).
How does SMCG64AHE3/9AT compare to bidirectional TVS diodes like SMCG64CA?
SMCG64AHE3/9AT is unidirectional and features a cathode band for polarity identification, whereas SMCG64CA is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional version offers lower leakage current and is preferred for DC rail protection (e.g., 12 V battery lines), while the bidirectional variant suits AC-coupled or differential signal lines. Both share identical VWM, PPPM, and package.
What PCB layout guidance applies to SMCG64AHE3/9AT for optimal thermal and electrical performance?
For optimal performance, mount SMCG64AHE3/9AT on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This pad size ensures the rated RθJA of 75 °C/W and supports full 1500 W PPPM capability. Avoid narrow traces between the TVS and protected node; use short, direct connections to minimize inductance and preserve clamping speed.
SMCG64AHE3/9AT 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
SMCG64AHE3/9AT FAQ
1.How can I place an order for SMCG64AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG64AHE3/9AT 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 SMCG64AHE3/9AT reliable?
The price and inventory of SMCG64AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG64AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG64AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG64AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG64AHE3/9AT?
SMCG64AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG64AHE3/9AT 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 SMCG64AHE3/9AT?
For technical support, including SMCG64AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG64AHE3/9AT requirements.
6.How does Aetrix verify that SMCG64AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG64AHE3/9AT 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 SMCG64AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG64AHE3/9AT?
All SMCG64AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG64AHE3/9AT, 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 SMCG64AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG64AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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