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Vishay General Semiconductor - Diodes Division SMCJ17AHE3_A/I
- Part No.:
- SMCJ17AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17AHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
SMCJ17AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V standoff voltage (VWM), 27.6 V maximum clamping voltage (VC) at 54.3 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ17AHE3_A/I datasheet, SMCJ17AHE3_A/I pinout, SMCJ17AHE3_A/I application, or SMCJ17AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, low incremental surge resistance, glass-passivated junction, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 17 V reverse standoff voltage and rapidly transitions to low-impedance conduction above its 18.9–20.9 V breakdown range (VBR at 1 mA). Its response time is sub-nanosecond, enabling suppression of fast transients such as ESD (IEC 61000-4-2) and load dump spikes (ISO 7637-2).
The device uses a planar silicon junction with glass passivation for stable leakage performance (<1.0 µA at VWM) and thermal stability up to 150 °C junction temperature. Its SMC package provides mechanical robustness and meets UL 94 V-0 flammability rating, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards.
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 threshold defining turn-on precision |
| VC @ IPPM | 27.6 V at 54.3 A - Clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W (10/1000 µs) - Peak surge power handling capability under standardized test waveform |
| IPPM | 54.3 A - Peak pulse current corresponding to VC, used for PCB trace sizing and layout margining |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage ID | ≤1.0 µA at 17 V - Low reverse leakage preserves battery life in always-on circuits |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode-banded unidirectional configuration. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), with 0.126" (3.20 mm) minimum standoff height and 0.185" (4.69 mm) maximum body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; defines polarity for unidirectional clamping |
| Cathode (banded end) | High-side transient input terminal | Connected to protected line (e.g., 12 V supply); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for safety-critical industrial and automotive enclosures |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND, activated within <1 ns to limit voltage to ≤27.6 V. Use Value: Prevents latch-up or permanent damage to MCU LDOs and internal circuitry during 12 V system transients up to 1500 W. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back configuration) suppresses EFT (IEC 61000-4-4) and ESD (±8 kV contact) on sensor outputs. Use Value: Maintains signal integrity by clamping transients before they distort the 16-bit DAC output or saturate op-amp front-ends. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding primary-side controller ICs in universal AC/DC adapters subjected to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to clamp differential-mode surges before they overstress MOSFETs or PWM controllers. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV) without requiring additional MOV stages or complex filtering. | Use Scenario: Protecting PoE (Power over Ethernet) midspan injectors' 48 V DC feed lines from induced surges on outdoor cabling runs. IC Role / Device Role / Timing Role: Placed on each DC pair (spare pairs or data pairs) to clamp common-mode transients exceeding 17 V standoff level. Use Value: Preserves IEEE 802.3af/at functionality by limiting voltage excursions to <27.6 V, preventing PSE controller shutdown or PD damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHE3_A/I | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VC specs | Suitable for space-constrained consumer boards where 1500 W surge margin is not required | Select when board area is limited and peak surge energy is ≤600 W |
| SMCJ17CAHE3_A/I | Bidirectional variant; symmetric VBR and VC in both polarities; same package and power rating | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose only if bidirectional clamping is mandated by circuit topology or standard compliance |
Compared with SMBJ17AHE3_A/I, SMCJ17AHE3_A/I delivers 2.5× higher surge power handling in the same footprint family; versus SMCJ17CAHE3_A/I, it offers lower capacitance and tighter VBR tolerance for DC rail protection but lacks reverse-polarity clamping capability.
Availability
SMCJ17AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, telecom power feed systems, and consumer power adapter development requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ17AHE3_A/I 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, efficiency, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against ISO 7637, IEC 61000-4-x, and lightning-induced surges is mandatory.
FAQ
What is the maximum clamping voltage of SMCJ17AHE3_A/I at its rated peak pulse current?
The SMCJ17AHE3_A/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its specified peak pulse current of 54.3 A under the 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 27.6 V during worst-case transient events. The SMCJ17AHE3_A/I maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMCJ17AHE3_A/I qualified for automotive applications?
Yes, SMCJ17AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88394. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The SMCJ17AHE3_A/I is approved for use in engine control units, body electronics, and ADAS subsystems where reliability under vibration, thermal shock, and extended temperature operation is critical.
What does the "_A/I" suffix in SMCJ17AHE3_A/I indicate?
The "_A/I" suffix in SMCJ17AHE3_A/I denotes the packaging configuration: "A" indicates the revision level (Revision A per Vishay's internal documentation), and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3500 units. This format complies with EIA-481 standards and supports high-speed pick-and-place assembly. The SMCJ17AHE3_A/I is RoHS-compliant, halogen-free, and rated for MSL Level 1 handling.
How does SMCJ17AHE3_A/I differ from SMCJ17CAHE3_A/I?
SMCJ17AHE3_A/I is unidirectional, with cathode band marking and clamping only in reverse bias, while SMCJ17CAHE3_A/I is bidirectional, offering symmetrical clamping in both polarities with no polarity marking. Both share identical package (SMC), power rating (1500 W), and thermal specs, but the SMCJ17AHE3_A/I exhibits lower junction capacitance and tighter VBR tolerance-making it preferred for DC power rail protection where polarity is fixed.
What PCB pad layout is recommended for optimal thermal and surge performance of SMCJ17AHE3_A/I?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad for each terminal of the SMCJ17AHE3_A/I to achieve rated 1500 W pulse power dissipation. These pads must be directly connected to internal ground/power planes via multiple thermal vias. The SMCJ17AHE3_A/I datasheet Figure 2 confirms derating curves based on this layout; reducing pad size lowers IPPM capability and increases junction temperature rise during surge events.
SMCJ17AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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 (SMCJ)
SMCJ17AHE3_A/I FAQ
1.How can I place an order for SMCJ17AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17AHE3_A/I 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 SMCJ17AHE3_A/I reliable?
The price and inventory of SMCJ17AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ17AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ17AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17AHE3_A/I?
SMCJ17AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17AHE3_A/I 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 SMCJ17AHE3_A/I?
For technical support, including SMCJ17AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ17AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ17AHE3_A/I 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 SMCJ17AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ17AHE3_A/I?
All SMCJ17AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17AHE3_A/I, 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 SMCJ17AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ17AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17AHE3_A/I Tags
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