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Vishay General Semiconductor - Diodes Division SMCG17A-E3/57T
- Part No.:
- SMCG17A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG17A-E3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,230
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Product details
Overview
SMCG17A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a standoff voltage of 17 V, breakdown voltage range 18.9–20.9 V at 1 mA, peak pulse power rating of 1500 W (10/1000 µs), clamping voltage of 27.6 V at 54.3 A, and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs and ICs against inductive switching transients in engine control units.
For engineers reviewing the SMCG17A-E3/57T datasheet, SMCG17A-E3/57T pinout, SMCG17A-E3/57T application, or SMCG17A-E3/57T equivalent, key selection criteria include unidirectional polarity, 17 V working voltage, 1500 W surge capability, DO-215AB thermal performance (RθJA = 75 °C/W), and AEC-Q101 qualification for under-hood automotive use.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 17 V and rapidly transitions to low-impedance conduction above its 18.9–20.9 V breakdown threshold. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response time (<1 ns), critical for protecting sensitive gate drivers.
The SMCG17A-E3/57T uses a single-junction silicon avalanche structure optimized for bidirectional-capable packaging (though this variant is unidirectional), with cathode-band marking and matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - Confirmed breakdown window defining turn-on consistency |
| VC @ IPPM | 27.6 V at 54.3 A - Clamped voltage during full 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform, enabling robust ESD and load-dump protection |
| IFSM | 200 A - Surge current rating for 8.3 ms half-sine wave, supporting automotive load-dump immunity |
| TJ max | +150 °C - Maximum junction temperature, allowing operation in under-hood environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing lead frame with cathode band marking; meets UL 94 V-0, MSL Level 1, and AEC-Q101 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground reference | Low-inductance path for surge return; must be routed with minimal loop area to reduce voltage overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connects to line being protected | Primary clamping node - placed directly at IC input or MOSFET gate to minimize trace inductance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable leakage current (<1 µA at 17 V) and long-term reliability under thermal cycling |
| Low incremental surge resistance | Enables tighter clamping (27.6 V at 54.3 A) versus competitive TVS devices with higher dynamic impedance |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD201 Class 2 |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver lines from alternator load dump and inductive coil flyback in 12 V vehicle systems. IC Role / Device Role: Unidirectional clamping TVS placed at ECU input connectors and power rail inputs. Use Value: Limits transient voltage to ≤27.6 V during 1500 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding IGBT gate drivers from Miller-induced voltage spikes during high-dV/dt switching in variable-frequency drives. IC Role / Device Role: Localized TVS mounted directly at gate driver output pins, adjacent to gate resistor. Use Value: Sub-1 ns response and 27.6 V clamping prevent false turn-on and gate overvoltage failure under 1000 V/µs edge rates. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input Protection |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs from battery reverse connection and jump-start transients. IC Role / Device Role: Unidirectional TVS on 12 V supply rail and LIN signal lines within BCM PCB layout. Use Value: AEC-Q101 qualification and 200 A IFSM ensure survival during 12 V system fault conditions per ISO 7637-2 Pulse 5a. | Use Scenario: Suppressing AC line surges and lightning-induced transients on DC input rails of telecom base station power supplies. IC Role / Device Role: Primary-stage TVS on 48 V DC input before DC/DC converter stage. Use Value: 1500 W PPPM rating and 75 °C/W RθJA allow sustained surge handling without thermal runaway in enclosed chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T | Same VWM (17 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 | Select when cost or board space is prioritized over 1500 W surge capability and AEC-Q101 compliance. |
| SMCJ17A-E3/57T | Same VWM (17 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package and RθJA = 40 °C/W | Better thermal performance but requires ~30% more PCB area; not AEC-Q101 qualified | Choose if thermal margin is critical and automotive qualification is not required. |
Compared with SMAJ17A-E3/57T and SMCJ17A-E3/57T, the SMCG17A-E3/57T delivers AEC-Q101 qualification and DO-215AB's optimized footprint-to-power ratio-enabling compact, automotive-compliant surge protection where space and qualification are jointly constrained.
Availability
SMCG17A-E3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and telecom power supply designs requiring stable component supply, AEC-Q101 validation, and 1500 W transient immunity.
Supply support for SMCG17A-E3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-power handling.
The SMCG series was developed specifically for high-energy transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 compliance, DO-215AB thermal efficiency, and 1500 W surge capability in a low-profile gull-wing package.
FAQ
What is the clamping voltage of the SMCG17A-E3/57T at its rated peak pulse current?
The SMCG17A-E3/57T has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 54.3 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The SMCG17A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the SMCG17A-E3/57T suitable for automotive applications?
Yes, the SMCG17A-E3/57T is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body control modules, and ADAS sensor interfaces. Its construction features glass-passivated junctions, matte tin-plated leads compliant with JESD201 Class 2, and MSL Level 1 moisture sensitivity rating - all validated per automotive reliability standards. The SMCG17A-E3/57T meets ISO 7637-2 Pulse 5a requirements when applied with proper PCB layout and thermal management.
What does the "E3/57T" suffix indicate in SMCG17A-E3/57T?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin plating, while "57T" specifies the preferred packaging: 7-inch diameter plastic tape and reel containing 850 units. This format supports automated SMT placement and is defined in the Vishay ordering information table (page 3 of document 88457). The SMCG17A-E3/57T is distinct from HE3-suffixed variants, which carry AEC-Q101 qualification - though this particular part number is confirmed AEC-Q101 qualified per footnote (1) and mechanical data section.
How does the SMCG17A-E3/57T differ from bidirectional TVS diodes like SMCG17CA?
The SMCG17A-E3/57T is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse conduction is not required. In contrast, SMCG17CA is bidirectional, lacks polarity marking, and provides symmetrical clamping for AC or floating signal lines. Both share identical VWM (17 V), VBR, and PPPM (1500 W), but the SMCG17A-E3/57T exhibits forward voltage drop (~3.5 V at 100 A) and is rated for IFSM (200 A), whereas SMCG17CA is not. The SMCG17A-E3/57T is therefore preferred for 12 V/24 V automotive power rail protection.
What is the thermal resistance of the SMCG17A-E3/57T, and how does it affect layout?
The SMCG17A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet (page 3). This value assumes minimum recommended pad layout; reducing pad size increases RθJA, risking thermal overload during repeated surges. To maintain reliability, the SMCG17A-E3/57T must be placed with direct thermal vias to inner ground planes and avoid nearby heat sources.
SMCG17A-E3/57T 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG17A-E3/57T FAQ
1.How can I place an order for SMCG17A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG17A-E3/57T 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 SMCG17A-E3/57T reliable?
The price and inventory of SMCG17A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG17A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG17A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG17A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG17A-E3/57T?
SMCG17A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG17A-E3/57T 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 SMCG17A-E3/57T?
For technical support, including SMCG17A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG17A-E3/57T requirements.
6.How does Aetrix verify that SMCG17A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG17A-E3/57T 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 SMCG17A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG17A-E3/57T?
All SMCG17A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG17A-E3/57T, 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 SMCG17A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG17A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG17A-E3/57T Tags
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