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Vishay General Semiconductor - Diodes Division SMCG33AHE3/57T
- Part No.:
- SMCG33AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG33AHE3/57T.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,515
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Product details
Overview
SMCG33AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 28.1 A peak pulse current (IPPM), and clamps to ≤53.3 V at rated surge. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive powertrain and body control modules.
For engineers reviewing the SMCG33AHE3/57T datasheet, SMCG33AHE3/57T pinout, SMCG33AHE3/57T application, or SMCG33AHE3/57T equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use cases, and validated alternative parts - all aligned with Vishay's official 88457 specification document dated 09-Jan-2024.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction and low incremental surge resistance. Its 1500 W peak pulse power rating is specified under standardized 10/1000 µs waveform conditions on 8.0 mm × 8.0 mm copper pads, and it maintains stable clamping performance across -55 °C to +150 °C operating junction temperature.
The SMCG33AHE3/57T exhibits fast response time (<1 ns), meets MSL level 1 per J-STD-020 (260 °C reflow peak), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its cathode band marking enables automated optical inspection during SMT placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 24 V automotive systems. |
| VBR (min/max) | 36.7 V / 40.6 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on behavior across production lots. |
| VC @ IPPM | ≤53.3 V at 28.1 A - clamping voltage limits downstream component stress during 10/1000 µs transients. |
| PPPM | 1500 W - peak surge energy handling capacity under standard lightning/surge test waveform. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | +150 °C - supports under-hood automotive environments without derating in most PCB layouts. |
| RθJA | 75 °C/W - thermal resistance enables reliable operation at 6.5 W dissipation with minimal heatsinking. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount case with 8.0 mm × 8.0 mm thermal pad footprint, UL 94 V-0 molding compound, and AEC-Q101 qualification. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference. | Provides return path for clamped surge current; must be routed to low-impedance ground plane. |
| Cathode | Current exit terminal in forward bias; marked with band; connects to line being protected. | Directly interfaces with I/O or power rail; polarity-sensitive - reversal disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors requiring zero-failure reliability. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives. |
| MSL Level 1 rating | Enables single-reflow assembly without baking; compatible with standard 260 °C lead-free reflow profiles. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a). |
| Matte tin plating | Ensures solderability and whisker resistance per JESD 201 Class 2, critical for high-reliability automotive builds. |
Applications
| Automotive Powertrain ECUs | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting CAN transceiver power rails and microcontroller I/O against load dump and alternator ripple in engine control units. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 12 V supply and ground, triggered within <1 ns to limit voltage excursions. Use Value: Maintains VWM = 33 V margin above nominal 24 V system, enabling compliance with ISO 16750-2 load dump requirements up to 35 V. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLCs from ESD and switching noise. IC Role / Device Role / Timing Role: Standoff-mode protector on 0–5 V or 4–20 mA output lines, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Low ID ≤1.0 µA prevents loading of high-impedance sensor outputs while delivering 1500 W surge immunity. |
| Consumer USB-C Power Delivery | Telecom Base Station DC Feeds |
|
Use Scenario: Safeguarding USB-C port VBUS lines against hot-plug transients and cable-induced surges in portable docking stations. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5–20 V programmable power supply rail, coordinated with upstream OVP ICs. Use Value: Clamps to ≤53.3 V at 28.1 A, preventing damage to USB PD controllers and buck converters during 10/1000 µs events. |
Use Scenario: Protecting 48 V DC input stages of remote radio units (RRUs) from lightning-induced surges on outdoor feeder cables. IC Role / Device Role / Timing Role: Secondary-level TVS on telecom rectifier output, supplementing primary GDT/MOV protection. Use Value: 1500 W PPPM rating and DO-215AB thermal performance support sustained operation in sealed, convection-limited 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 |
|---|---|---|---|
| SMAJ33A-E3/57T | Same VWM (33 V) and VC (≤53.3 V), but lower PPPM (400 W) and smaller SMA (DO-214AC) package. | Limited to lower-energy transients; unsuitable for automotive load dump or telecom lightning standards. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV). |
| SMCJ33AHE3/57T | Identical VWM, VBR, and VC, but higher PPPM (3000 W); same SMCG (DO-215AB) package and AEC-Q101 qualification. | Supports higher-energy threats like ISO 7637-2 Pulse 5b (100 V/1 Ω) without derating. | Choose for mission-critical automotive or industrial systems where 2× surge headroom is required. |
Compared with SMCG33AHE3/57T, SMAJ33A-E3/57T offers reduced surge capability in a smaller footprint, while SMCJ33AHE3/57T doubles peak power handling with identical form factor and qualification - enabling direct upgrade paths without layout changes.
Availability
SMCG33AHE3/57T is available at Aetrix Electronics and suitable for automotive powertrain modules, industrial sensor interfaces, and telecom DC feed protection requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for SMCG33AHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMCG series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 validation and DO-215AB thermal performance are mandatory.
FAQ
What is the clamping voltage of SMCG33AHE3/57T at its rated peak pulse current?
The SMCG33AHE3/57T clamps to a maximum of 53.3 V at its rated peak pulse current (IPPM) of 28.1 A under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per Vishay Document 88457, ensuring repeatable thermal conditions during surge testing.
Is SMCG33AHE3/57T suitable for bidirectional transient protection?
No, SMCG33AHE3/57T is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMCG33CA). Using SMCG33AHE3/57T in reverse-biased configurations will not provide symmetrical clamping and may fail catastrophically.
Does SMCG33AHE3/57T require derating at elevated ambient temperatures?
Yes, SMCG33AHE3/57T must be derated above TA = 25 °C per Figure 2 in Vishay Document 88457. Its peak pulse power drops linearly to ~50 % at TJ = 125 °C, and its 1500 W rating assumes proper thermal management via recommended 8.0 mm × 8.0 mm copper pads.
What does the "HE3/57T" suffix indicate in SMCG33AHE3/57T?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification; "57T" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. This matches Vishay's ordering code convention in Document 88457 Section "Ordering Information".
Can SMCG33AHE3/57T replace SMAJ33A in an existing design?
SMCG33AHE3/57T cannot be a drop-in replacement for SMAJ33A due to different packages (SMCG/DO-215AB vs. SMA/DO-214AC), larger footprint, and higher thermal mass. While both share VWM = 33 V, the SMCG33AHE3/57T requires revised PCB layout and stencil design to accommodate its gull-wing leads and thermal pad area.
SMCG33AHE3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCG33AHE3/57T FAQ
1.How can I place an order for SMCG33AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG33AHE3/57T 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 SMCG33AHE3/57T reliable?
The price and inventory of SMCG33AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG33AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG33AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG33AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG33AHE3/57T?
SMCG33AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG33AHE3/57T 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 SMCG33AHE3/57T?
For technical support, including SMCG33AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG33AHE3/57T requirements.
6.How does Aetrix verify that SMCG33AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG33AHE3/57T 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 SMCG33AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG33AHE3/57T?
All SMCG33AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG33AHE3/57T, 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 SMCG33AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG33AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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