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Vishay General Semiconductor - Diodes Division SMCJ17C-E3/9AT
- Part No.:
- SMCJ17C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17C-E3/9AT.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
SMCJ17C-E3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for clamping voltage transients on signal or power lines. It features a 17 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), 27.6 V maximum clamping voltage (VC) at 54.3 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCJ17C-E3/9AT datasheet, SMCJ17C-E3/9AT pinout, SMCJ17C-E3/9AT application, or SMCJ17C-E3/9AT equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O modules, and telecom line drivers where bidirectional clamping, low leakage (<1 μA at VWM), and high surge current capability are critical.
Technical Context
The SMCJ17C-E3/9AT operates as a bi-directional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal paths without polarity sensitivity. Its 17 V stand-off voltage ensures compatibility with 12 V automotive supply rails and 15 V industrial logic interfaces while maintaining low reverse leakage (≤1.0 μA).
It delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions, with clamping voltage limited to 27.6 V at 54.3 A peak surge current - ensuring downstream ICs (e.g., CAN transceivers, ADC front-ends) remain below absolute maximum ratings during lightning or load-dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; matches 12 V automotive systems with margin. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold consistency. |
| VC @ IPPM | 27.6 V - Clamped voltage at 54.3 A surge; limits stress on protected circuitry during worst-case transients. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | ≤1.0 μA - Reverse leakage at rated stand-off; minimizes quiescent power loss and signal distortion. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | DO-214AB (SMCJ) - Surface-mount package with 8.0 mm × 8.0 mm copper pad thermal design; meets MSL level 1. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads; no polarity marking for bi-directional devices; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct equally in either polarity; no cathode band marking required. |
| Case (exposed metal slug) | Thermal path | Integral heat-spreading surface mounted to PCB copper pads (0.31" × 0.31") for RθJA = 75 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
| Low incremental surge resistance | Enables tighter clamping (27.6 V VC) at high surge currents, reducing voltage overshoot on protected nodes. |
| Glass passivated junction | Ensures stable breakdown characteristics and long-term stability under repeated surge stress. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and position sensors from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential signal pair or supply rail to divert surge energy to ground. Use Value: Maintains 17 V stand-off while clamping to 27.6 V, preventing damage to 30 V-rated transceivers during 12 V system surges. | Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field-induced transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input terminal and ground to absorb ±1 kV EFT bursts per IEC 61000-4-4. Use Value: ≤1.0 μA leakage at 17 V ensures minimal impact on loop accuracy; 1500 W rating handles repetitive surges without degradation. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE injectors against lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Bi-directional TVS placed across transformer secondary windings to limit common-mode overvoltage. Use Value: Symmetrical 18.9–20.9 V breakdown ensures balanced clamping on differential pairs, preserving signal integrity during fast transients. | Use Scenario: Secondary-side overvoltage suppression on 19 V laptop adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Clamp device installed between +VOUT and GND to prevent output rail collapse or downstream regulator latch-up. Use Value: 27.6 V clamping voltage stays safely below 30 V absolute maximum ratings of typical DC-DC controllers and USB PD ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W). | Suitable for lower-energy transients (IEC 61000-4-2 ESD only); not recommended for IEC 61000-4-5 surge. | Select when board space is constrained and surge energy is <50 mJ; verify thermal derating at elevated ambient. |
| SMCJ17CAHE3/9AT | Identical electrical specs but AEC-Q101 qualified version with HE3 suffix; same DO-214AB package. | Required for automotive production programs requiring full AEC-Q101 documentation and traceability. | Choose for Tier-1 automotive designs where qualification evidence and lot-level PPAP support are mandatory. |
Compared with SMCJ17C-E3/9AT, SMAJ17CA-E3/61T offers footprint reduction at the cost of surge capacity and thermal performance, while SMCJ17CAHE3/9AT provides identical protection with certified automotive qualification - making it the preferred choice for safety-critical vehicle subsystems.
Availability
SMCJ17C-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply and RoHS-compliant packaging.
Supply support for SMCJ17C-E3/9AT 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, rectifiers, and protection devices with emphasis on reliability and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments; its design prioritizes low clamping voltage, repeatable surge endurance, and automotive-grade qualification for mission-critical electronics.
FAQ
What is the breakdown voltage range of the SMCJ17C-E3/9AT?
The SMCJ17C-E3/9AT has a minimum breakdown voltage (VBR) of 18.9 V and a maximum of 20.9 V at 1 mA test current, as specified in the Vishay datasheet revision 11-Dec-12. This range ensures consistent clamping behavior across production lots and defines the voltage threshold at which the SMCJ17C-E3/9AT begins conducting significant current during overvoltage events.
Is the SMCJ17C-E3/9AT suitable for automotive applications?
Yes, the SMCJ17C-E3/9AT is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. While the base SMCJ17C-E3/9AT carries commercial-grade qualification, its construction - including glass-passivated junction and MSL Level 1 compliance - meets automotive reliability requirements as verified by Vishay's qualification testing.
What does the "C" suffix indicate in SMCJ17C-E3/9AT?
The "C" suffix in SMCJ17C-E3/9AT denotes a bi-directional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike uni-directional variants (e.g., SMCJ17A), the SMCJ17C-E3/9AT has no polarity marking and is used where AC signals, floating grounds, or bidirectional data lines require equal clamping in either polarity.
How is thermal performance characterized for the SMCJ17C-E3/9AT?
The SMCJ17C-E3/9AT 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, and a junction-to-lead resistance (RθJL) of 15 °C/W. These values define its ability to dissipate surge energy without exceeding the +150 °C maximum junction temperature, especially during repetitive transient events.
What is the peak pulse current rating for the SMCJ17C-E3/9AT?
The SMCJ17C-E3/9AT is rated for a peak pulse current (IPPM) of 54.3 A under the standard 10/1000 μs double-exponential waveform. This value corresponds directly to its 1500 W peak pulse power rating and 27.6 V clamping voltage, forming a complete specification set for surge immunity validation per IEC 61000-4-5.
SMCJ17C-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 49.2A
- 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 (SMCJ)
SMCJ17C-E3/9AT FAQ
1.How can I place an order for SMCJ17C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17C-E3/9AT 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 SMCJ17C-E3/9AT reliable?
The price and inventory of SMCJ17C-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ17C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ17C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17C-E3/9AT?
SMCJ17C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17C-E3/9AT 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 SMCJ17C-E3/9AT?
For technical support, including SMCJ17C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ17C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ17C-E3/9AT 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 SMCJ17C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ17C-E3/9AT?
All SMCJ17C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17C-E3/9AT, 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 SMCJ17C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ17C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17C-E3/9AT Tags
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