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Vishay General Semiconductor - Diodes Division SMCJ17AHE3_A/H
- Part No.:
- SMCJ17AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17AHE3_A/H.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,508
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Product details
Overview
SMCJ17AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 μs waveform. It clamps transients to ≤27.6 V at 54.3 A IPPM and operates from –55 °C to +150 °C, targeting automotive power rail and sensor interface protection.
For engineers reviewing the SMCJ17AHE3_A/H datasheet, SMCJ17AHE3_A/H pinout, SMCJ17AHE3_A/H application, or SMCJ17AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1.0 μA max reverse leakage at 17 V, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling robust clamping of inductive switching spikes and ESD events. Its unidirectional configuration provides cathode-banded polarity alignment with DC-biased lines, and it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow capability.
The device delivers stable clamping performance across temperature due to a +0.090 %/°C VBR temperature coefficient and maintains <1000 μA ID at VWM up to 125 °C. Its 75 °C/W junction-to-ambient thermal resistance requires defined PCB copper pad layout (0.31″ × 0.31″ per terminal) to sustain rated PPPM under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC bias margin for protected line. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown occurs within this range at 1.0 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 27.6 V - Clamped voltage at 54.3 A peak pulse current; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling at 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | 1.0 μA - Reverse leakage at full standoff voltage; negligible loading on high-impedance signal or supply rails. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment for automotive module assembly. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per AEC-Q101 requirements. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 54.3 A without degradation-sufficient for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 combinations. |
| AEC-Q101 qualified (HE3) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability over 15-year service life. |
| MSL Level 1, 260 °C | Supports single-pass lead-free reflow without moisture-induced popcorning or delamination in production SMT lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤27.6 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic powered from same rail. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS connected across signal and return, absorbing ±8 kV contact ESD (IEC 61000-4-2) before reaching precision DAC or op-amp inputs. Use Value: Sub-1 ns response time and 1.0 μA leakage preserve signal integrity and offset accuracy in millivolt-level measurement systems. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary rails in PoE-powered switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on 3.3 V/5 V bias rails feeding magnetics and PHY ICs, coordinated with upstream GDT or MOV. Use Value: 1500 W PPPM handles combined threat models (IEC 61000-4-5, 10/700 μs) without thermal runaway, maintaining system uptime. |
Use Scenario: Suppressing switch-mode noise and AC line transients on secondary-side 12 V outputs of USB-C PD adapters. IC Role / Device Role / Timing Role: Final-stage TVS on regulated DC output, guarding connected devices (e.g., laptops, monitors) from overvoltage faults. Use Value: Tight VBR tolerance (±5.5 %) and low clamping ratio (VC/VBR ≈ 1.45) ensure compliance with USB PD v3.1 safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHE3_A/H | Lower PPPM (600 W), smaller SMB (DO-214AA) package, identical VWM/VBR specs. | Reduced surge margin; suitable only for lower-energy threats (e.g., IEC 61000-4-2 ESD only). | Select when board space is constrained and surge requirements do not exceed 600 W. |
| SMCJ17CAHE3_A/H | Bidirectional variant; symmetric VBR (18.9–20.9 V) in both polarities; same PPPM and package. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN bus). | Choose for bidirectional protection needs; not interchangeable without circuit redesign. |
Compared with SMCJ17AHE3_A/H, SMBJ17AHE3_A/H trades surge capacity for footprint reduction, while SMCJ17CAHE3_A/H adds bidirectional symmetry at no power or thermal penalty-making each alternative optimal only for its specific circuit topology and threat profile.
Availability
SMCJ17AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line cards, and consumer power adapter designs requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for SMCJ17AHE3_A/H 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 applications where robustness against load dump, ESD, and lightning surges is mandatory.
FAQ
What is the clamping voltage of the SMCJ17AHE3_A/H at its rated peak pulse current?
The SMCJ17AHE3_A/H clamps to a maximum of 27.6 V at its rated peak pulse current of 54.3 A (10/1000 μs waveform). This value is measured under standardized test conditions with the device mounted on 0.31″ × 0.31″ copper pads per terminal. The clamping voltage directly determines the maximum overvoltage stress imposed on protected downstream components, making it critical for ensuring compatibility with the voltage ratings of associated ICs and passives in the SMCJ17AHE3_A/H application circuit.
Is the SMCJ17AHE3_A/H suitable for automotive applications?
Yes, the SMCJ17AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix. It has undergone stress testing for high-temperature operating life, thermal cycling, and ESD robustness per the AEC standard. The device's 150 °C maximum junction temperature, MSL Level 1 reflow rating, and glass-passivated junction make it appropriate for engine control units, body electronics, and ADAS modules where SMCJ17AHE3_A/H must operate reliably over extended service life under thermal and mechanical stress.
How does the SMCJ17AHE3_A/H differ from the bidirectional SMCJ17CAHE3_A/H?
The SMCJ17AHE3_A/H is unidirectional, with a cathode band indicating polarity and intended for DC-biased lines, whereas the SMCJ17CAHE3_A/H is bidirectional, offering symmetrical clamping in both directions and no polarity marking. Both share identical VWM (17 V), VBR (18.9–20.9 V), PPPM (1500 W), and SMC package. The SMCJ17AHE3_A/H cannot replace SMCJ17CAHE3_A/H in AC or floating applications without risking failure during reverse-polarity transients, and vice versa in DC circuits where polarity alignment is required.
What is the maximum reverse leakage current for the SMCJ17AHE3_A/H at its standoff voltage?
The maximum reverse leakage current (ID) for the SMCJ17AHE3_A/H is 1.0 μA at its 17 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance circuits such as sensor bias networks or precision reference paths. Leakage remains below 1000 μA even at elevated temperatures up to 125 °C, preserving functionality in thermally demanding SMCJ17AHE3_A/H deployments.
What PCB layout guidance applies to the SMCJ17AHE3_A/H to achieve rated surge performance?
To achieve the full 1500 W peak pulse power rating, the SMCJ17AHE3_A/H must be mounted on minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads connected to internal or external ground planes. This layout minimizes thermal impedance and sustains current handling during transient events. Reducing pad size or using narrow traces increases localized heating and degrades IPPM capability. The SMCJ17AHE3_A/H datasheet specifies this requirement explicitly in Figure 2 and the "Mounting Pad Layout" drawing on page 5.
SMCJ17AHE3_A/H 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/H FAQ
1.How can I place an order for SMCJ17AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17AHE3_A/H 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/H reliable?
The price and inventory of SMCJ17AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMCJ17AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17AHE3_A/H?
SMCJ17AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17AHE3_A/H 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/H?
For technical support, including SMCJ17AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17AHE3_A/H requirements.
6.How does Aetrix verify that SMCJ17AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ17AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMCJ17AHE3_A/H?
All SMCJ17AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMCJ17AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17AHE3_A/H Tags
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