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Vishay General Semiconductor - Diodes Division SMCG36CAHE3/9AT
- Part No.:
- SMCG36CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG36CAHE3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,723
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Product details
Overview
SMCG36CAHE3/9AT 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), 36 V stand-off voltage (VWM), and clamping voltage of 58.1 V at 25.8 A. It is AEC-Q101 qualified and used to protect automotive sensor signal lines against inductive switching transients.
For engineers reviewing the SMCG36CAHE3/9AT datasheet, SMCG36CAHE3/9AT pinout, SMCG36CAHE3/9AT application, or SMCG36CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), AEC-Q101 qualification, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown voltage (VBR = 40.0–44.2 V), it transitions from high-impedance to low-impedance state within <1 ps, diverting surge current away from downstream circuitry. Its bidirectional symmetry ensures identical clamping behavior for positive and negative transients.
The SMCG36CAHE3/9AT uses a glass-passivated silicon junction and is rated for continuous operation from −55 °C to +150 °C. Its low incremental surge resistance and fast response enable effective suppression of ESD, lightning-induced surges, and load-dump transients in automotive ECUs and sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 40.0 V / 44.2 V - guaranteed breakdown threshold range at 1 mA test current |
| VC @ IPPM | 58.1 V - clamping voltage at full 25.8 A peak pulse current (10/1000 µs) |
| PPPM | 1500 W - peak surge power handling capacity under standardized waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on recommended 8.0 mm × 8.0 mm pad layout |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded package with matte tin-plated terminals, UL 94 V-0 molding compound, and MSL Level 1 rating (peak reflow ≤ 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry (reverse bias) / cathode reference (forward bias) | Bidirectional symmetry means no polarity marking; both terminals function identically under ± transients |
| Cathode | Current exit (reverse bias) / anode reference (forward bias) | Same terminal designation as Anode due to bidirectional construction; no band marking per spec |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor modules without additional qualification effort |
| Low RθJL (15 °C/W) | Supports efficient heat transfer to PCB leads, reducing localized thermal stress during repetitive surge events |
| MSL Level 1 rating | Allows direct placement into standard SMT reflow profiles without baking or special handling |
| 1500 W 10/1000 µs rating | Provides robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Combination Wave surges |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional shunt clamp that activates within picoseconds to limit transient voltage to ≤58.1 V during 10/1000 µs surges. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs while maintaining signal integrity during normal operation (ID ≤ 1.0 µA at 36 V). | Use Scenario: Safeguarding digital input/output channels on programmable logic controllers interfacing with solenoids, relays, and motor starters. IC Role / Device Role / Timing Role: Fast-acting voltage limiter placed across each I/O line to absorb inductive kickback energy up to 1500 W. Use Value: Eliminates need for external snubbers or RC networks, reducing BOM count and board space while meeting IEC 61000-4-4 EFT immunity requirements. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS placed at connector entry point to clamp common-mode transients before they reach isolation barriers. Use Value: Achieves >20 kV ESD contact discharge protection (per IEC 61000-4-2) and 4 kV 10/700 µs telecom surge compliance with single-device solution. | Use Scenario: Securing microcontroller GPIOs and gate drivers in washing machine motor inverters subjected to brush-commutator noise and power supply instability. IC Role / Device Role / Timing Role: Localized transient suppressor mounted adjacent to MOSFET drivers to prevent false triggering or shoot-through during commutation spikes. Use Value: Enables reliable operation at 150 °C junction temperature, supporting compact heatsink-less designs in sealed appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Not AEC-Q101 qualified; suitable only for industrial/commercial grade designs | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| SMCJ36CA | Same PPPM (1500 W) but larger SMC (DO-214AB) package, RθJA = 60 °C/W, higher IPPM (33.3 A) | Requires more PCB area; better thermal performance but less compatible with ultra-compact layouts | Prefer when thermal management is critical and board space allows larger footprint |
Compared with SMAJ36CA and SMCJ36CA, the SMCG36CAHE3/9AT delivers AEC-Q101 qualification in the smallest DO-215AB footprint while maintaining full 1500 W surge capability-making it optimal for space-constrained automotive modules where reliability and miniaturization are jointly prioritized.
Availability
SMCG36CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for SMCG36CAHE3/9AT 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, power efficiency, and automotive-grade validation.
The SMCG series was developed specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and consistent 1500 W surge capability across the voltage range.
FAQ
What does the "HE3" suffix indicate in SMCG36CAHE3/9AT?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads. Specifically, "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance and industrial-grade reliability, and "9AT" specifies 13-inch tape-and-reel packaging with 3500 units per reel. This makes SMCG36CAHE3/9AT suitable for automotive production without additional qualification testing.
How does SMCG36CAHE3/9AT differ from unidirectional SMCG36A variants?
The SMCG36CAHE3/9AT is bidirectional, meaning it provides symmetrical clamping for both positive and negative transients, with identical VBR, VC, and IPPM ratings in either polarity. In contrast, unidirectional SMCG36A has a cathode band marking and conducts only in reverse bias; forward conduction is limited to 3.5 V at 100 A. The CA version eliminates polarity concerns in AC-coupled or differential signal paths.
What is the maximum clamping voltage of SMCG36CAHE3/9AT under surge conditions?
The maximum clamping voltage (VC) of SMCG36CAHE3/9AT is 58.1 V, measured at its peak pulse current (IPPM) of 25.8 A under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range (−55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can SMCG36CAHE3/9AT be used in place of SMAJ36CA in existing designs?
No direct drop-in replacement: although both are 36 V bidirectional TVS diodes, SMCG36CAHE3/9AT uses the smaller DO-215AB (SMCG) package versus DO-214AC (SMA) for SMAJ36CA. Pad layout, thermal relief, and solder stencil must be revised. Additionally, SMCG36CAHE3/9AT offers 1500 W vs. 400 W rating and AEC-Q101 qualification-advantages requiring design validation but not mechanical compatibility.
What PCB layout guidance applies to SMCG36CAHE3/9AT for optimal thermal performance?
For optimal thermal performance, SMCG36CAHE3/9AT must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Thermal vias under pads and internal copper planes improve heat dissipation. Avoid narrow traces between the device and ground/power planes, and ensure solder mask defined pads to maximize wetting and thermal conduction. This layout achieves the published RθJA of 75 °C/W.
SMCG36CAHE3/9AT 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 25.8A
- 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)
SMCG36CAHE3/9AT FAQ
1.How can I place an order for SMCG36CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG36CAHE3/9AT 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 SMCG36CAHE3/9AT reliable?
The price and inventory of SMCG36CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG36CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG36CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG36CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG36CAHE3/9AT?
SMCG36CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG36CAHE3/9AT 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 SMCG36CAHE3/9AT?
For technical support, including SMCG36CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG36CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG36CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG36CAHE3/9AT 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 SMCG36CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG36CAHE3/9AT?
All SMCG36CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG36CAHE3/9AT, 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 SMCG36CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG36CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG36CAHE3/9AT Tags
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