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Vishay General Semiconductor - Diodes Division SMCJ9.0AHE3_A/I
- Part No.:
- SMCJ9.0AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0AHE3_A/I.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,894
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Product details
Overview
SMCJ9.0AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 9.0 V standoff voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V clamping voltage (VC) at 97.4 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 controllers.
For engineers reviewing the SMCJ9.0AHE3_A/I datasheet, SMCJ9.0AHE3_A/I pinout, SMCJ9.0AHE3_A/I application, or SMCJ9.0AHE3_A/I equivalent, this device delivers AEC-Q101 qualified surge immunity, low incremental surge resistance, and fast response time for reliable protection against inductive switching transients and ESD events in harsh environments.
Technical Context
The SMCJ9.0AHE3_A/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<10 µA at 9.0 V), while thermal resistance RθJA = 75 °C/W enables operation up to +150 °C junction temperature under defined PCB pad conditions.
It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance. The cathode band identifies polarity, and its SMC package supports automated placement with matte tin-plated leads compliant to J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - precise avalanche onset range ensuring predictable turn-on during transients. |
| VC @ IPPM | 15.4 V at 97.4 A - clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream ICs. |
| PPPM | 1500 W - peak pulse power handling capability; determines survivability against high-energy lightning or load-dump surges. |
| ID @ VWM | <10 µA - ultra-low reverse leakage at rated standoff; minimizes standby power loss in battery-powered systems. |
| TJ max. | +150 °C - maximum junction temperature; supports under-hood automotive deployment without derating at 85 °C ambient. |
| Package | SMC (DO-214AB) - surface-mount outline with 8.0 mm × 8.0 mm copper pads per terminal; optimized for thermal dissipation and reflow compatibility. |
Pinout & Package
SMCJ9.0AHE3_A/I uses the standard SMC (DO-214AB) package: two-terminal, unidirectional configuration with cathode identified by a band. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return); conducts during forward surge (IFSM = 200 A). |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 12 V rail); initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22. |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage overshoot during surge events - critical for protecting 12 V logic interfaces and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement. |
| Glass passivated junction | Ensures long-term parameter stability and reduced parameter drift across temperature and lifetime. |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial surge protection circuits without additional certification effort. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against ISO 7637-2 load dump pulses and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC/DC input, clamping within nanoseconds to limit voltage to ≤15.4 V. Use Value: Prevents latch-up or permanent damage to PMICs and microcontrollers during 120 V/50 ms load dump events. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across signal and ground, absorbing ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback from nearby solenoids. Use Value: Maintains signal integrity and prevents false readings or sensor reset during field maintenance or cable hot-plug events. |
| Telecom DC Feeding Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Safeguarding PoE (Power over Ethernet) midspan injectors against induced surges from outdoor cabling runs. IC Role / Device Role / Timing Role: Unidirectional TVS on +48 V DC feed line, positioned upstream of DC/DC converter and isolation transformer. Use Value: Absorbs 1500 W surges without degradation, preserving IEEE 802.3af/at compliance and avoiding fuse blowouts. |
Use Scenario: Input-stage surge suppression in AC/DC adapters for smart home hubs, exposed to mains-borne transients (IEC 61000-4-5). IC Role / Device Role / Timing Role: TVS mounted across primary-side bulk capacitor terminals to clamp differential-mode surges before rectification. Use Value: Enables compact design with no need for MOV+gas discharge tube cascading - reduces BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0AHE3_A/I | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR/VC specs. | Suitable for space-constrained consumer ports but insufficient for automotive load dump. | Select when board area is limited and surge energy is ≤600 W (e.g., USB-C PD data lines). |
| SMCJ9.0CAHE3_A/I | Bidirectional variant; identical VWM (9.0 V), symmetric VBR (10.0–11.1 V), same PPPM/VC. | Required for AC-coupled or floating signal paths (e.g., RS-485, audio lines) where polarity reversal occurs. | Choose only if bidirectional clamping is mandated - adds no benefit for DC rail protection and increases cost. |
Compared with SMBJ9.0AHE3_A/I, the SMCJ9.0AHE3_A/I provides 2.5× higher surge energy handling in the same footprint family; versus SMCJ9.0CAHE3_A/I, it offers superior clamping efficiency for unidirectional DC systems due to absence of reverse-direction leakage path.
Availability
SMCJ9.0AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor modules, telecom power feeding circuits, and consumer adapter input stages requiring stable component supply with AEC-Q101 qualification and UL recognition.
Supply support for SMCJ9.0AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMCJ series was engineered specifically for high-energy transient suppression in demanding environments - balancing clamping performance, thermal robustness, and AEC-Q101 compliance for under-hood and factory-floor deployment.
FAQ
What is the clamping voltage of SMCJ9.0AHE3_A/I at its rated peak pulse current?
The SMCJ9.0AHE3_A/I has a maximum clamping voltage (VC) of 15.4 V at 97.4 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured with the device mounted on 0.31" × 0.31" copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ9.0AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is SMCJ9.0AHE3_A/I qualified for automotive applications?
Yes, SMCJ9.0AHE3_A/I is AEC-Q101 qualified, verified per the full test suite including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, making the SMCJ9.0AHE3_A/I suitable for engine control, body electronics, and ADAS subsystems where reliability under thermal and mechanical stress is mandatory.
How does the SMCJ9.0AHE3_A/I differ from the bidirectional SMCJ9.0CAHE3_A/I?
The SMCJ9.0AHE3_A/I is unidirectional, with polarity marked by a cathode band and intended for DC rail protection; the SMCJ9.0CAHE3_A/I is bidirectional, with no polarity marking and symmetric clamping in both directions. Both share identical VWM (9.0 V), VBR (10.0–11.1 V), and PPPM (1500 W), but the SMCJ9.0AHE3_A/I exhibits lower reverse leakage (<10 µA) and avoids unnecessary conduction during normal AC signal swings - making the SMCJ9.0AHE3_A/I optimal for 12 V power domains.
What is the thermal resistance of SMCJ9.0AHE3_A/I, and how does it affect layout?
The SMCJ9.0AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 0.31" × 0.31" copper pads per terminal. To achieve rated 1500 W pulse power, PCB layout must provide these pad dimensions and avoid excessive copper isolation. Reducing pad size increases junction temperature and de-rates IPPM - the SMCJ9.0AHE3_A/I's performance is directly tied to adherence to this thermal layout specification.
Does SMCJ9.0AHE3_A/I meet any safety agency certifications?
Yes, SMCJ9.0AHE3_A/I carries Underwriters Laboratories (UL) recognition under file number E136766 and standard UL 497B for protectors (QVGQ2), covering both unidirectional and bidirectional variants. This certification validates its suitability in telecom, industrial, and automotive surge protection circuits without requiring end-equipment re-certification - a key advantage for the SMCJ9.0AHE3_A/I in time-sensitive product launches.
SMCJ9.0AHE3_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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97.4A
- 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)
SMCJ9.0AHE3_A/I FAQ
1.How can I place an order for SMCJ9.0AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0AHE3_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 SMCJ9.0AHE3_A/I reliable?
The price and inventory of SMCJ9.0AHE3_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 SMCJ9.0AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ9.0AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0AHE3_A/I?
SMCJ9.0AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0AHE3_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 SMCJ9.0AHE3_A/I?
For technical support, including SMCJ9.0AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ9.0AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0AHE3_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 SMCJ9.0AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ9.0AHE3_A/I?
All SMCJ9.0AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0AHE3_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 SMCJ9.0AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ9.0AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0AHE3_A/I Tags
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Diodes Incorporated
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