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Vishay General Semiconductor - Diodes Division SMCG17A-M3/9AT
- Part No.:
- SMCG17A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG17A-M3/9AT.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,960
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Product details
Overview
SMCG17A-M3/9AT 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 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 27.6 V clamping voltage (VC) at 54.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCG17A-M3/9AT datasheet, SMCG17A-M3/9AT pinout, SMCG17A-M3/9AT application, or SMCG17A-M3/9AT equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and bidirectional variant compatibility - all critical for ESD/surge co-design and automotive-grade BOM validation.
Technical Context
This TVS diode operates as a clamping-type surge protector, leveraging an avalanche breakdown mechanism to limit transient voltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while the DO-215AB package enables high-current handling (200 A IFSM) with minimal parasitic inductance.
Designed for unidirectional operation, SMCG17A-M3/9AT exhibits polarity-sensitive mounting (cathode band marked), supports automated SMT placement, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its thermal performance is characterized by RθJL = 15 °C/W and TJ max = +150 °C, enabling reliable operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for 24 V systems. |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - Tight breakdown window ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 27.6 V at 54.3 A - Clamped voltage during 10/1000 µs surge; limits stress on protected 3.3 V or 5 V logic interfaces. |
| PPPM | 1500 W - Peak pulse power handling capability; sustains high-energy lightning-induced surges per IEC 61000-4-5. |
| TJ max | +150 °C - Maximum junction temperature rating; enables deployment in engine control modules and power inverters. |
| RθJA | 75 °C/W - Thermal resistance to ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements for sustained surge duty. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
SMCG17A-M3/9AT uses the SMCG (DO-215AB) surface-mount package: a gull-wing leaded outline with cathode band marking, 0.220–0.245 inch body length, and matte tin-plated terminals compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference in unidirectional configuration. | Provides return path for surge current during clamping; must be routed with low-inductance ground plane. |
| Cathode | Marked terminal (band); reverse-biased connection point to protected line (e.g., 24 V supply or CAN_H). | Defines polarity-sensitive placement; incorrect orientation disables protection and risks short-circuit failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance; suitable for green manufacturing. |
| Low incremental surge resistance | Enables rapid voltage clamping with minimal overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a). |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT line integration. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and lifetime stress conditions. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and LDO input. Use Value: Limits transient voltage to ≤27.6 V during 1500 W surges, preventing latch-up or burnout of downstream PMICs. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor transmitter output, shunting induced EFT bursts. Use Value: Maintains signal integrity with <1.0 µA leakage at 17 V, avoiding measurement offset in precision current loops. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Securing -48 V DC input of telecom base station power modules against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on input bulk capacitor rail, coordinated with upstream fuses. Use Value: Absorbs 54.3 A peak current with 27.6 V clamping, preserving rectifier bridge and PFC controller reliability. |
Use Scenario: Shielding high-side gate driver ICs (e.g., ISO5852S) from Miller-induced voltage spikes in IGBT inverters. IC Role / Device Role / Timing Role: Localized TVS mounted directly at gate driver output pins. Use Value: Responds in <1 ns to clamp spikes above 20.9 V, preventing false turn-on and shoot-through failure. |
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) and PPPM (400 W), but lower power rating; SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients (IEC 61000-4-2 ESD only); unsuitable for load dump or lightning-level surges. | Select when cost and board space constrain design, and surge energy remains below 400 W. |
| SMCG17CA-M3/9AT | Bidirectional variant with identical VWM (17 V), VBR (18.9–20.9 V), and PPPM (1500 W); no polarity marking. | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN bus) where voltage polarity reverses. | Choose for symmetric transient protection where bidirectional clamping is mandated by interface standard. |
Compared with SMAJ17A-E3/57T, SMCG17A-M3/9AT delivers 3.75× higher surge power handling and superior thermal dissipation; versus SMCG17CA-M3/9AT, it offers polarity-aware protection for DC rails but requires correct orientation during placement.
Availability
SMCG17A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor nodes, and telecom power supply protection requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SMCG17A-M3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and 1500 W surge capability.
FAQ
What is the clamping voltage of SMCG17A-M3/9AT at its rated peak pulse current?
The SMCG17A-M3/9AT has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) of 54.3 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage stress during surge events. The SMCG17A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG17A-M3/9AT suitable for automotive applications?
Yes, SMCG17A-M3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS power domains. Its construction - glass-passivated junction, halogen-free M3 suffix, MSL Level 1 rating, and 150 °C maximum junction temperature - meets stringent automotive reliability requirements. The SMCG17A-M3/9AT is listed in Vishay's AEC-Q101 qualified devices table with full test report traceability.
How does the M3 suffix differ from E3 in SMCG17A-M3/9AT?
The M3 suffix indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, whereas E3 denotes standard RoHS compliance without halogen-free assurance. Both meet industrial-grade specifications, but SMCG17A-M3/9AT satisfies stricter environmental mandates such as China RoHS II and JEDEC J-STD-609A. The SMCG17A-M3/9AT shares identical electrical characteristics and packaging with its E3 counterpart.
What is the thermal resistance from junction to ambient for SMCG17A-M3/9AT?
The typical junction-to-ambient thermal resistance (RθJA) of SMCG17A-M3/9AT is 75 °C/W, measured on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad layout per terminal. This value assumes still air convection and guides thermal design for sustained surge duty cycles. The SMCG17A-M3/9AT also features RθJL = 15 °C/W, supporting efficient heat transfer to PCB copper planes.
Can SMCG17A-M3/9AT be used in bidirectional signal protection?
No - SMCG17A-M3/9AT is a unidirectional TVS diode, marked with a cathode band and intended for DC rail protection where polarity is fixed. For bidirectional signal lines like RS-485 or CAN, the SMCG17CA-M3/9AT variant must be used instead. Using SMCG17A-M3/9AT in bidirectional configurations risks open-circuit failure during negative transients. The SMCG17A-M3/9AT datasheet explicitly restricts operation to unidirectional applications.
SMCG17A-M3/9AT 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:
- 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-M3/9AT FAQ
1.How can I place an order for SMCG17A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG17A-M3/9AT 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 SMCG17A-M3/9AT reliable?
The price and inventory of SMCG17A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG17A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG17A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG17A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG17A-M3/9AT?
SMCG17A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG17A-M3/9AT 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 SMCG17A-M3/9AT?
For technical support, including SMCG17A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG17A-M3/9AT requirements.
6.How does Aetrix verify that SMCG17A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG17A-M3/9AT 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 SMCG17A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG17A-M3/9AT?
All SMCG17A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG17A-M3/9AT, 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 SMCG17A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG17A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG17A-M3/9AT Tags
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