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Vishay General Semiconductor - Diodes Division SMCG33CAHE3/57T
- Part No.:
- SMCG33CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG33CAHE3/57T.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,103
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Product details
Overview
SMCG33CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, with 33 V standoff voltage (VWM), 1500 W peak pulse power (PPPM), and clamping voltage of 53.3 V at 28.1 A IPPM. It provides robust ESD and surge protection for automotive sensor signal lines, USB interfaces, and industrial I/O ports.
For engineers reviewing the SMCG33CAHE3/57T datasheet, SMCG33CAHE3/57T pinout, SMCG33CAHE3/57T application, or SMCG33CAHE3/57T equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for automotive-grade board-level surge immunity design.
Technical Context
The SMCG33CAHE3/57T operates as a bidirectional avalanche diode, symmetrically clamping transients above ±36.7 V breakdown (VBR min) and below ±53.3 V clamping voltage (VC) under 10/1000 μs surge conditions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns).
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power dissipation with thermal resistance RθJA = 75 °C/W and junction temperature range from –55 °C to +150 °C - enabling reliable operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 36.7 V / 40.6 V - guaranteed avalanche breakdown threshold in both directions |
| VC @ IPPM | 53.3 V @ 28.1 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capacity per IEEE C62.35 standard |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensor circuits |
| TJ Range | –55 °C to +150 °C - supports AEC-Q101 automotive qualification and under-hood deployment |
| Package | SMCG (DO-215AB) - low-profile, gull-wing SMD package compatible with automated placement |
Pinout & Package
SMCG33CAHE3/57T uses the SMCG (DO-215AB) package: a symmetrical, bidirectional surface-mount device with two terminals and no polarity marking. The case is molded compound rated UL 94 V-0; terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; enables symmetric clamping across differential or single-ended lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment I/O |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced failure |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| Bidirectional symmetry | Equal clamping performance for positive and negative surges - ideal for AC-coupled or floating lines |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and MEMS pressure/temperature sensors from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Clamps transients to ≤53.3 V while sustaining 1500 W pulses - preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding PLC analog input channels (4–20 mA, 0–10 V) and digital GPIOs against field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted adjacent to terminal blocks to absorb lightning-induced common-mode spikes. Use Value: With ≤1.0 μA leakage at 33 V, it avoids loading high-impedance sensor outputs while maintaining precision measurement accuracy. |
| USB 2.0 Data Line Protection | Automotive Infotainment Display Interface |
Use Scenario: ESD and surge protection for D+ and D– lines in automotive USB host ports exposed to human-body-model (HBM) and system-level surges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline between USB connector and USB transceiver IC. Use Value: Junction capacitance <50 pF (typ.) at zero bias ensures minimal signal distortion at 480 Mbps, preserving USB 2.0 eye diagram integrity. | Use Scenario: Protecting LVDS or FPD-Link III video data lanes connecting head unit processors to TFT displays in dashboards and center consoles. IC Role / Device Role / Timing Role: Differential pair clamp deployed across each data lane to suppress common-mode transients without disrupting high-speed timing margins. Use Value: Symmetric ±36.7 V breakdown ensures equal clamping margin for both polarities - critical for differential signaling integrity under surge stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Same VWM (33 V) and PPPM (400 W), but lower power rating and SMA package (DO-214AC) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost or board space is prioritized over automotive reliability and 1500 W surge handling |
| SMCJ33CA | Same VWM (33 V) and higher PPPM (1500 W), but larger SMC (DO-214AB) package and no AEC-Q101 grade variant | Requires larger PCB footprint; lacks automotive qualification documentation | Select only if AEC-Q101 compliance is not required and layout allows DO-214AB mounting |
Compared with SMAJ33CA and SMCJ33CA, the SMCG33CAHE3/57T uniquely combines AEC-Q101 qualification, DO-215AB compactness, and full 1500 W surge capability - making it the only option qualified for automotive front-end protection where space, reliability, and energy rating are simultaneously constrained.
Availability
SMCG33CAHE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC I/O modules, and USB interface protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SMCG33CAHE3/57T 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 and automotive-grade validation.
The SMCG series was developed specifically for high-energy, space-constrained transient suppression in AEC-Q101-compliant automotive and industrial systems - balancing low profile, high power density, and process-controlled parametric consistency.
FAQ
What is the clamping voltage of SMCG33CAHE3/57T under a 10/1000 µs surge?
The SMCG33CAHE3/57T clamps to a maximum of 53.3 V at its rated peak pulse current of 28.1 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuitry.
Is SMCG33CAHE3/57T suitable for automotive applications?
Yes, SMCG33CAHE3/57T is explicitly AEC-Q101 qualified and marked with the HE3 suffix denoting RoHS compliance and automotive qualification. Its –55 °C to +150 °C operating range, MSL Level 1 reflow rating, and validated surge performance make it approved for use in engine control units, ADAS sensors, and infotainment systems.
Does SMCG33CAHE3/57T have polarity markings?
No, SMCG33CAHE3/57T is a bidirectional TVS and carries no polarity marking on the SMCG (DO-215AB) package. Both terminals are functionally identical - the device clamps symmetrically for positive and negative transients, eliminating orientation concerns during placement.
What is the maximum leakage current of SMCG33CAHE3/57T at its standoff voltage?
The maximum reverse leakage current (ID) of SMCG33CAHE3/57T is 1.0 μA at its 33 V standoff voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs and precision analog inputs without compromising signal fidelity.
What packaging format is used for SMCG33CAHE3/57T?
SMCG33CAHE3/57T is supplied in 7-inch diameter plastic tape and reel format (package code 57T), with 850 units per reel. This configuration supports high-speed automated pick-and-place assembly and complies with EIA-481 standards for SMD component handling.
SMCG33CAHE3/57T 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 28.1A
- 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)
SMCG33CAHE3/57T FAQ
1.How can I place an order for SMCG33CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG33CAHE3/57T 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 SMCG33CAHE3/57T reliable?
The price and inventory of SMCG33CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG33CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG33CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG33CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG33CAHE3/57T?
SMCG33CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG33CAHE3/57T 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 SMCG33CAHE3/57T?
For technical support, including SMCG33CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG33CAHE3/57T requirements.
6.How does Aetrix verify that SMCG33CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG33CAHE3/57T 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 SMCG33CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG33CAHE3/57T?
All SMCG33CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG33CAHE3/57T, 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 SMCG33CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG33CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG33CAHE3/57T Tags
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