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Vishay General Semiconductor - Diodes Division SMCJ16AHE3/9AT
- Part No.:
- SMCJ16AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16AHE3/9AT.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,892
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Product details
Overview
SMCJ16AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage at 57.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform. Used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the SMCJ16AHE3/9AT datasheet, SMCJ16AHE3/9AT pinout, SMCJ16AHE3/9AT application, or SMCJ16AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1.0 µA max reverse leakage at VWM, thermal resistance of 75 °C/W (junction-to-ambient), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ16AHE3/9AT operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to ESD and surge events. Its breakdown voltage range is 17.8–19.7 V at 1.0 mA test current, and it maintains stable clamping performance up to 150 °C junction temperature.
Designed for unidirectional transient suppression, it exhibits low incremental surge resistance and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The cathode band marking enables unambiguous polarity identification during PCB assembly and inspection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 16 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR Min/Max | 17.8 V / 19.7 V at 1.0 mA - Ensures reliable avalanche initiation within defined tolerance band |
| VC @ IPPM | 26.0 V at 57.7 A - Clamped voltage seen by protected circuit during 10/1000 µs surge event |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized surge waveform |
| ID @ VWM | 1.0 µA - Low leakage preserves efficiency in battery-powered or high-impedance circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - Thermal performance baseline for layout-dependent derating above 25 °C ambient |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode identified by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line (e.g., GND or return path) |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential side (e.g., VBUS or signal line) to clamp transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass-passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| Low-profile SMC package | Enables high-density PCB layouts while maintaining 1500 W surge capability |
| MSL Level 1 rating | Supports standard lead-free reflow without baking or special handling |
| 10/1000 µs waveform compliance | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump spikes (up to 35 V) on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges before they reach LDOs and microcontrollers. Use Value: Prevents latch-up or permanent damage to downstream ICs during ISO 7637-2 Pulse 5a events. |
Use Scenario: Guarding analog output lines (e.g., 4–20 mA current loops) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-clamping protection element placed at connector interface, upstream of op-amp driver stage. Use Value: Limits transient voltage to ≤26.0 V, preserving ADC input integrity and avoiding overvoltage shutdown. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding buck converter inputs against inductive kickback from adjacent relay or solenoid switching. IC Role / Device Role / Timing Role: Primary surge absorber on VIN rail, coordinated with bulk capacitance to absorb 1500 W pulses. Use Value: Maintains system uptime by preventing repeated fuse blowing or MOSFET failure during field operation. |
Use Scenario: Protecting high-side gate driver ICs from Miller-induced voltage spikes during fast IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Localized clamping device across gate-to-source terminals to limit dv/dt stress. Use Value: Reduces false triggering and gate oxide degradation by clamping transients below 26.0 V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/61T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not rated for AEC-Q101 | Select when board space is constrained and surge threat level is ≤ Class 2 IEC 61000-4-5 |
| SMCJ16CAHE3/9AT | Bidirectional variant; same VWM (16 V), symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal occurs | Choose only if bidirectional protection is mandated-unidirectional SMCJ16AHE3/9AT offers superior leakage and cost efficiency for DC rails |
Compared with SMAJ16A-E3/61T, the SMCJ16AHE3/9AT delivers 3.75× higher surge power handling and automotive qualification; versus SMCJ16CAHE3/9AT, it provides tighter leakage control and optimized clamping for grounded DC systems.
Availability
SMCJ16AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and DC-DC converter designs requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMCJ16AHE3/9AT 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 validation.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness and repeatable clamping performance are critical.
FAQ
What is the maximum clamping voltage of the SMCJ16AHE3/9AT under a 10/1000 µs surge?
The SMCJ16AHE3/9AT has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 57.7 A using the 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. Designers must ensure downstream components tolerate this clamped voltage under worst-case surge conditions.
Is the SMCJ16AHE3/9AT qualified for automotive applications?
Yes, the SMCJ16AHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. This certification confirms it has passed stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness required for automotive electronic control units. Its 150 °C maximum junction temperature and MSL Level 1 rating further support use in engine bay and chassis-mounted modules.
How does the SMCJ16AHE3/9AT differ from the bidirectional SMCJ16CAHE3/9AT?
The SMCJ16AHE3/9AT is unidirectional, with cathode marked by a band and optimized for DC rail protection where transients occur only in one polarity. The SMCJ16CAHE3/9AT is bidirectional, offering symmetrical clamping in both directions but with higher reverse leakage (2.0 µA vs. 1.0 µA) and no polarity marking. Use SMCJ16AHE3/9AT for grounded power lines; choose the CA version only for AC or floating signal paths.
What is the thermal resistance of the SMCJ16AHE3/9AT, and how does it affect layout?
The SMCJ16AHE3/9AT 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. This value assumes minimum recommended pad layout per Vishay's datasheet. Larger copper areas or internal planes reduce RθJA, improving surge survivability during repetitive events. Layouts with insufficient copper will exceed TJ max under sustained power dissipation.
Can the SMCJ16AHE3/9AT be used in place of older SMAJ or P4SMA series devices?
No direct substitution is recommended. The SMCJ16AHE3/9AT offers 1500 W peak pulse power, whereas SMAJ16A delivers only 400 W and P4SMA16A is rated at 400 W in DO-41. Its SMC package also differs mechanically from SMA and DO-41 footprints. Replacing lower-power devices with SMCJ16AHE3/9AT requires PCB redesign for the larger SMC (DO-214AB) outline and updated thermal validation.
SMCJ16AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 57.7A
- 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)
SMCJ16AHE3/9AT FAQ
1.How can I place an order for SMCJ16AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16AHE3/9AT 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 SMCJ16AHE3/9AT reliable?
The price and inventory of SMCJ16AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ16AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16AHE3/9AT?
SMCJ16AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16AHE3/9AT 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 SMCJ16AHE3/9AT?
For technical support, including SMCJ16AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16AHE3/9AT requirements.
6.How does Aetrix verify that SMCJ16AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ16AHE3/9AT 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 SMCJ16AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ16AHE3/9AT?
All SMCJ16AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16AHE3/9AT, 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 SMCJ16AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ16AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ16AHE3/9AT Tags
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