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Vishay General Semiconductor - Diodes Division SMCJ9.0-E3/9AT
- Part No.:
- SMCJ9.0-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0-E3/9AT.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
SMCJ9.0-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 µs waveform - ideal for safeguarding automotive ECUs and industrial sensor interfaces against inductive switching transients.
For engineers reviewing the SMCJ9.0-E3/9AT datasheet, SMCJ9.0-E3/9AT pinout, SMCJ9.0-E3/9AT application, or SMCJ9.0-E3/9AT equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and validated clamping performance under 10/1000 µs surge conditions per ANSI/IEEE C62.35.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds its breakdown threshold (VBR min = 10.0 V, max = 11.1 V at 1.0 mA), it rapidly transitions to low-impedance conduction to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<10 µA at VWM) and repeatable clamping behavior across temperature.
Thermal design relies on low junction-to-lead thermal resistance (RθJL = 15 °C/W) and defined mounting on 8.0 mm × 8.0 mm copper pads; derating applies above TA = 25 °C per Fig. 2, with maximum junction temperature limited to +150 °C and storage range from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - guaranteed breakdown window defining turn-on consistency |
| VC @ IPPM | 15.4 V at 97.4 A - clamping voltage during 10/1000 µs surge, limiting protected node stress |
| PPPM | 1500 W - peak surge power handling capability under standardized waveform |
| ID @ VWM | ≤10 µA - ultra-low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - enables operation in under-hood automotive and industrial environments |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow without moisture-induced damage |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 9 V rail); cathode band marks this end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.54) and higher energy absorption efficiency |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test; suitable for commercial and automotive production |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical board-level compliance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 9 V supply lines in engine control units (ECUs) from load-dump and inductive kickback transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between 9 V rail and chassis ground to clamp surges within 1 ns response time. Use Value: Limits rail voltage to ≤15.4 V during 100 A transients, preventing damage to microcontrollers and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and field wiring faults. IC Role / Device Role / Timing Role: Bidirectional-capable protection (though SMCJ9.0-E3/9AT is unidirectional, used in grounded-signal configurations) placed at connector entry point. Use Value: Clamps fast-rising transients (e.g., IEC 61000-4-5 10/700 µs) while maintaining <10 µA leakage for precision current-loop accuracy. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Securing 9 V input stage of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input, coordinated with upstream fuse and downstream DC-DC converter. Use Value: Absorbs up to 1500 W surge energy without degradation, preserving system uptime in harsh electrical environments. | Use Scenario: Protecting internal 9 V bias rails feeding audio codecs or display drivers in smart speakers and portable monitors. IC Role / Device Role / Timing Role: Localized clamping device adjacent to sensitive ICs, leveraging low RθJL (15 °C/W) for rapid heat dissipation. Use Value: Prevents latch-up and gate oxide rupture in CMOS ICs during ESD events (IEC 61000-4-2 ±8 kV contact discharge). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/61T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM and VC | Suitable for space-constrained consumer PCBs where 1500 W surge margin is not required | Select when board area is critical and surge threat level is moderate (e.g., indoor consumer electronics) |
| SMCJ9.0AHE3/9AT | Identical electrical specs but AEC-Q101 qualified (HE3 suffix), same DO-214AB package | Required for automotive OEM designs requiring full qualification documentation and traceability | Choose for Tier-1 automotive programs where AEC-Q101 certification is mandatory |
Compared with SMCJ9.0-E3/9AT, SMAJ9.0A-E3/61T trades surge capacity for footprint reduction, while SMCJ9.0AHE3/9AT adds formal AEC-Q101 validation without altering clamping performance - enabling direct substitution only where qualification status aligns with program requirements.
Availability
SMCJ9.0-E3/9AT is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, consistent RoHS compliance, and documented AEC-Q101 qualification readiness.
Supply support for SMCJ9.0-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in demanding environments including automotive, industrial, and telecom infrastructure - prioritizing low clamping ratio, fast response, and robust thermal performance.
FAQ
What is the breakdown voltage range for SMCJ9.0-E3/9AT?
The SMCJ9.0-E3/9AT has a guaranteed breakdown voltage (VBR) range of 10.0 V to 11.1 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35 standards. This tight VBR window ensures predictable turn-on behavior during overvoltage events and supports reliable coordination with downstream overvoltage protection circuits. The SMCJ9.0-E3/9AT maintains this specification across its rated temperature range.
Is SMCJ9.0-E3/9AT suitable for automotive applications?
Yes, the SMCJ9.0-E3/9AT is RoHS-compliant and manufactured to meet AEC-Q101 stress test requirements, making it suitable for automotive applications such as engine control units, body electronics, and infotainment power rails. While the base part (E3 suffix) is commercial-grade, its construction - including glass-passivated junction, MSL Level 1 rating, and UL 94 V-0 molding - supports automotive deployment where full AEC-Q101 documentation is not mandated. For certified use, SMCJ9.0AHE3/9AT is the qualified variant.
What does the "-E3/9AT" suffix indicate in SMCJ9.0-E3/9AT?
The "-E3" suffix denotes RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance, while "/9AT" specifies packaging in 13-inch diameter plastic tape and reel containing 3500 units. This format ensures compatibility with high-speed automated pick-and-place equipment and supports IPC-A-610-compliant assembly processes. The SMCJ9.0-E3/9AT is fully traceable and conforms to Vishay's material categorization policy per doc#99912.
How does SMCJ9.0-E3/9AT compare to bi-directional TVS diodes like SMCJ9.0CA?
The SMCJ9.0-E3/9AT is unidirectional and intended for DC line protection where polarity is fixed (e.g., 9 V rail to ground), offering lower leakage and optimized forward conduction characteristics. In contrast, SMCJ9.0CA is bi-directional, suited for AC-coupled or floating signal lines. Both share identical VWM (9.0 V) and PPPM (1500 W), but SMCJ9.0-E3/9AT exhibits VF = 3.5 V at 100 A (forward conduction), whereas SMCJ9.0CA has no forward voltage spec. Use SMCJ9.0-E3/9AT where polarity is known and leakage must be minimized.
What is the maximum clamping voltage of SMCJ9.0-E3/9AT under surge conditions?
The SMCJ9.0-E3/9AT has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current (IPPM) of 97.4 A using the standard 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ9.0-E3/9AT achieves a clamping ratio (VC/VBR) of approximately 1.54, indicating efficient voltage limiting.
SMCJ9.0-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 88.8A
- 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)
SMCJ9.0-E3/9AT FAQ
1.How can I place an order for SMCJ9.0-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0-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 SMCJ9.0-E3/9AT reliable?
The price and inventory of SMCJ9.0-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 SMCJ9.0-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ9.0-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0-E3/9AT?
SMCJ9.0-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0-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 SMCJ9.0-E3/9AT?
For technical support, including SMCJ9.0-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0-E3/9AT requirements.
6.How does Aetrix verify that SMCJ9.0-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0-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 SMCJ9.0-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ9.0-E3/9AT?
All SMCJ9.0-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0-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 SMCJ9.0-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ9.0-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0-E3/9AT Tags
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