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Vishay General Semiconductor - Diodes Division SMCG17AHE3/57T
- Part No.:
- SMCG17AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG17AHE3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,074
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Product details
Overview
SMCG17AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 54.3 A peak pulse current (IPPM), and clamps to ≤27.6 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor signal lines and power rails.
For engineers reviewing the SMCG17AHE3/57T datasheet, SMCG17AHE3/57T pinout, SMCG17AHE3/57T application, or SMCG17AHE3/57T equivalent, key selection criteria include unidirectional polarity, DO-215AB thermal performance (RθJA = 75 °C/W), 1500 W 10/1000 µs surge rating, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold, limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the low incremental surge resistance enables effective suppression of high-current transients like ISO 7637-2 pulses.
The SMCG17AHE3/57T is optimized for surface-mount automated placement on PCBs with 8.0 mm × 8.0 mm copper pads per terminal. Its MSL Level 1 rating (260 °C peak reflow) and matte tin-plated leads comply with J-STD-002 solderability standards, supporting high-yield manufacturing in automotive and industrial assembly lines.
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 range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | ≤27.6 V at 54.3 A - Clamping voltage under full 1500 W 10/1000 µs surge, defining worst-case stress on protected IC |
| PPPM | 1500 W - Peak transient power handling capability per standard 10/1000 µs waveform |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at stand-off voltage, minimizing standby power loss |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on recommended 8 mm × 8 mm pad layout |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing leaded case with cathode band marking; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to ground or lower-potential rail; defines current path during clamping |
| Cathode | Reverse voltage sensing node | Marked with band; connected to protected line (e.g., CAN_H, LIN, sensor supply); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage drift over temperature, and long-term reliability in harsh environments |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 8.7 V) and higher energy absorption without thermal runaway |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without moisture-related failure or delamination |
| RoHS-compliant HE3 suffix | Meets industrial and automotive environmental compliance requirements including halogen-free exemptions |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning stage. Use Value: Limits voltage excursion to ≤27.6 V during 1500 W surges, preserving ADC integrity and preventing latch-up in 3.3 V or 5 V MCUs. | Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subjected to EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Standoff-connected TVS on differential bus lines (A/B), referenced to local ground, absorbing common-mode surges. Use Value: Maintains signal integrity by clamping within 1 ns while sustaining <1 µA leakage at 17 V, avoiding bias current errors in precision receivers. |
| Automotive Power Rail Clamp | Consumer Device USB Port Protection |
Use Scenario: Secondary overvoltage protection on 12 V battery-fed ECUs after primary fuse and relay, guarding against jump-start transients up to ±100 V. IC Role / Device Role / Timing Role: Unidirectional TVS tied between switched 12 V rail and chassis ground, activated only during positive overvoltage events. Use Value: Withstands 200 A 8.3 ms half-sine surge (IFSM), providing fail-safe backup to upstream TVS arrays and preventing MOSFET gate oxide rupture. | Use Scenario: Input-side surge suppression on USB VBUS lines in portable medical monitors and smart home hubs exposed to ESD and hot-plug transients. IC Role / Device Role / Timing Role: First-line TVS on VBUS path before USB controller's internal protection, shunting >8 kV contact ESD per IEC 61000-4-2. Use Value: Achieves <1 ns response and ≤27.6 V clamping, keeping downstream USB PHY voltage below absolute maximum ratings during fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T | Same VWM (17 V), but lower PPPM (400 W) and smaller SMA (DO-214AC) package; RθJA = 110 °C/W | Not AEC-Q101 qualified; suitable for consumer/industrial, not automotive under-hood | Select when cost or board space is critical and surge energy is ≤400 W |
| SMCJ17AHE3/57T | Same VWM (17 V), identical DO-215AB package, but higher PPPM (1500 W) and tighter VBR (18.9–20.0 V); same AEC-Q101 grade | Identical application scope; differs only in tighter VBR tolerance and slightly lower VC (26.5 V) | Prefer when tighter clamping consistency or marginally lower VC is required for ultra-sensitive nodes |
Compared with SMAJ17A-E3/57T, SMCG17AHE3/57T delivers 275 % higher surge power and automotive qualification; versus SMCJ17AHE3/57T, it trades 1.1 V higher VC for broader VBR tolerance-critical where production VBR spread must accommodate aging or temperature drift.
Availability
SMCG17AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and USB VBUS surge suppression requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for SMCG17AHE3/57T 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, efficiency, and automotive-grade qualification.
The SMCG series is engineered for high-energy transient suppression in space-constrained automotive and industrial systems, prioritizing AEC-Q101 compliance, low clamping voltage, and robust thermal performance in surface-mount packages.
FAQ
What is the clamping voltage of SMCG17AHE3/57T under maximum rated surge conditions?
The SMCG17AHE3/57T clamps to a maximum of 27.6 V when subjected to its rated 54.3 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The SMCG17AHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCG17AHE3/57T suitable for bidirectional transient protection?
No, SMCG17AHE3/57T is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only during positive overvoltage events on the cathode terminal relative to anode. For bidirectional protection, Vishay offers the SMCG17CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using SMCG17AHE3/57T in bidirectional applications risks failure during negative transients, as it lacks reverse conduction capability.
What does the "HE3/57T" suffix indicate in SMCG17AHE3/57T?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "57T" specifies packaging in 7-inch diameter plastic tape and reel containing 850 units. This configuration ensures compatibility with high-speed pick-and-place equipment and supports automotive production traceability requirements. The HE3 grade also confirms compliance with JESD 201 Class 2 whisker resistance and matte tin plating per J-STD-002, distinguishing it from non-automotive E3 or M3 variants.
How does the thermal performance of SMCG17AHE3/57T compare to smaller package TVS diodes?
SMCG17AHE3/57T uses the DO-215AB (SMCG) package with a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W on recommended 8.0 mm × 8.0 mm copper pads-significantly lower than SMA (DO-214AC) devices like SMAJ17A-E3/57T (RθJA ≈ 110 °C/W). This 32 % improvement enables higher sustained power dissipation and better reliability under repeated surge events, especially in compact automotive modules where airflow is limited. The SMCG17AHE3/57T thus sustains longer surge duty cycles without exceeding TJ(max) = 150 °C.
Can SMCG17AHE3/57T replace older P6KE17A or 1.5KE17A through-hole TVS diodes?
SMCG17AHE3/57T is not a direct drop-in replacement for P6KE17A or 1.5KE17A due to package and mounting differences: it uses surface-mount DO-215AB versus axial-lead DO-15 or DO-201AD. While electrical specs (VWM = 17 V, PPPM = 1500 W) align closely, PCB redesign is required to accommodate gull-wing leads and thermal pad layout. However, as a functional upgrade, SMCG17AHE3/57T offers superior surge robustness, AEC-Q101 qualification, and automated assembly compatibility-making it ideal for new designs targeting automotive or high-reliability industrial use.
SMCG17AHE3/57T 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG17AHE3/57T FAQ
1.How can I place an order for SMCG17AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG17AHE3/57T 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 SMCG17AHE3/57T reliable?
The price and inventory of SMCG17AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG17AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG17AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG17AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG17AHE3/57T?
SMCG17AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG17AHE3/57T 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 SMCG17AHE3/57T?
For technical support, including SMCG17AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG17AHE3/57T requirements.
6.How does Aetrix verify that SMCG17AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG17AHE3/57T 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 SMCG17AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG17AHE3/57T?
All SMCG17AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG17AHE3/57T, 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 SMCG17AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG17AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG17AHE3/57T Tags
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