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Vishay General Semiconductor - Diodes Division SMCJ9.0CA-M3/9AT
- Part No.:
- SMCJ9.0CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CA-M3/9AT.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ9.0CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 µs waveform. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤15.4 V at 97.4 A peak pulse current - ideal for protecting automotive sensor signal lines, industrial I/O ports, and DC power rails against ESD and inductive switching surges.
For engineers reviewing the SMCJ9.0CA-M3/9AT datasheet, SMCJ9.0CA-M3/9AT pinout, SMCJ9.0CA-M3/9AT application, or SMCJ9.0CA-M3/9AT equivalent, this device delivers verified bidirectional surge suppression with halogen-free RoHS compliance, MSL Level 1 rating, and AEC-Q101 qualification readiness - critical for high-reliability automotive and industrial designs requiring stable transient immunity without polarity constraints.
Technical Context
The SMCJ9.0CA-M3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities with identical VBR min/max (10.0–11.1 V) and VC (≤15.4 V at IPPM). Its low incremental surge resistance and fast response time enable effective protection of downstream ICs and MOSFETs against lightning-induced surges and load dump events.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W, and is rated for 6.5 W steady-state power dissipation at TA = 50 °C on infinite heatsink - confirming suitability for compact PCB layouts with moderate thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | ≤15.4 V at 97.4 A - clamped voltage under 10/1000 µs surge; determines maximum stress on downstream components. |
| PPPM | 1500 W - peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤10 µA - reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement; supports automated placement and reflow. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability. |
Pinout & Package
SMCJ9.0CA-M3/9AT uses the SMC (DO-214AB) package - a surface-mount, dual-leaded, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. As a bidirectional TVS, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Common transient conduction path | Both terminals conduct identically during positive or negative voltage excursions; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR (10.0–11.1 V) and VC (≤15.4 V) in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal paths. |
| High surge robustness | 1500 W PPPM with 10/1000 µs waveform - withstands repetitive industrial surge events per IEC 61000-4-5 without degradation. |
| Low thermal resistance | RθJL = 15 °C/W - enables efficient heat transfer to PCB copper pads, supporting sustained operation near TJ max (150 °C). |
| Automated assembly ready | MSL Level 1 rating and matte tin plating - allows single-reflow processing without moisture sensitivity concerns or lead finish compatibility issues. |
| AEC-Q101 qualification path | M3 suffix variant aligns with halogen-free AEC-Q101 qualified versions (e.g., SMCJ9.0CAHM3_X) - simplifies automotive qualification traceability. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and battery reverse connection transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching sensitive interface ICs. Use Value: Limits transient voltage to ≤15.4 V while handling 97.4 A peak current - preserving signal integrity and preventing latch-up in automotive-grade microcontrollers. | Use Scenario: Safeguarding PLC digital input modules and fieldbus interfaces (e.g., RS-485, Profibus) against induced surges from nearby motor contactors or relay switching. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on signal and supply lines, operating in parallel with local decoupling capacitors. Use Value: Delivers 1500 W surge handling with ≤10 µA leakage at 9.0 V - ensuring low standby power and reliable long-term immunity in unattended industrial environments. |
| DC Power Rail Protection | Consumer Device USB/Ethernet Port Protection |
Use Scenario: Clamping voltage spikes on 5–12 V DC power distribution networks in embedded systems powered by switching regulators or external adapters. IC Role / Device Role / Timing Role: Secondary overvoltage protector downstream of primary fusing and upstream of LDOs or PMICs. Use Value: Fast avalanche response (<1 ps) and low clamping voltage (≤15.4 V) prevent overvoltage damage to downstream power management ICs during line transients. | Use Scenario: ESD and surge protection for USB 2.0 data lines and Ethernet PHY interfaces in smart home hubs and networked appliances. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector pins to divert HBM ±15 kV and IEC 61000-4-2 ±8 kV discharges. Use Value: Halogen-free M3 construction and 10 µA leakage support regulatory compliance and signal fidelity in high-speed differential pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0CA-E3/61T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR range. | Targeted at space-constrained consumer electronics with lower surge threat levels; not suitable for industrial IEC 61000-4-5 compliance. | Select when board area is critical and surge requirements are limited to IEC 61000-4-2 ESD only. |
| SMCJ9.0A-M3/9AT | Unidirectional version; includes cathode band marking; identical VWM, VBR, VC, and PPPM ratings. | Required where polarity is fixed (e.g., DC power rail with known ground reference); cannot protect AC or floating signals. | Choose only when circuit topology guarantees consistent polarity and bidirectional capability is unnecessary. |
Compared with SMAJ9.0CA-E3/61T and SMCJ9.0A-M3/9AT, the SMCJ9.0CA-M3/9AT uniquely provides full bidirectional 1500 W surge immunity in the robust SMC package - making it the optimal choice for automotive and industrial applications demanding polarity-agnostic protection without sacrificing power handling or thermal performance.
Availability
SMCJ9.0CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O port hardening, and DC power rail surge suppression requiring stable component supply across production lifecycles.
Supply support for SMCJ9.0CA-M3/9AT 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, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping precision, surge robustness, and manufacturability.
FAQ
What is the breakdown voltage range of the SMCJ9.0CA-M3/9AT?
The SMCJ9.0CA-M3/9AT has a guaranteed breakdown voltage (VBR) range of 10.0 V to 11.1 V at a test current of 1 mA, as specified in the Vishay datasheet (Document Number: 88394, Revision: 09-Jan-2024). This range applies equally in both directions due to its bidirectional design, ensuring consistent clamping behavior regardless of transient polarity. The SMCJ9.0CA-M3/9AT maintains this specification across its full operating temperature range of –55 °C to +150 °C.
Is the SMCJ9.0CA-M3/9AT suitable for automotive applications?
Yes - the SMCJ9.0CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified SMCJ family. While the base M3 variant is commercial-grade, Vishay offers direct AEC-Q101 qualified equivalents (e.g., SMCJ9.0CAHM3_X) with identical electrical specs and enhanced reliability testing. The SMCJ9.0CA-M3/9AT itself is widely deployed in automotive subsystems such as body control modules and sensor interfaces where transient immunity is critical.
How does the SMCJ9.0CA-M3/9AT differ from unidirectional SMCJ9.0A variants?
The SMCJ9.0CA-M3/9AT is bidirectional with no polarity marking, enabling symmetrical clamping on AC-coupled or floating lines, whereas the unidirectional SMCJ9.0A-M3/9AT includes a cathode band and conducts only in reverse bias. Both share identical VWM (9.0 V), VBR (10.0–11.1 V), VC (≤15.4 V), and PPPM (1500 W) ratings. The SMCJ9.0CA-M3/9AT is selected when circuit topology lacks a defined ground reference or requires protection against bipolar transients.
What is the maximum clamping voltage of the SMCJ9.0CA-M3/9AT under surge conditions?
The SMCJ9.0CA-M3/9AT clamps to a maximum 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 VC value is measured at the device terminals under defined test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and represents the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ9.0CA-M3/9AT achieves this with minimal overshoot due to its low incremental surge resistance.
Does the SMCJ9.0CA-M3/9AT require special PCB layout considerations?
Yes - to achieve rated thermal and surge performance, the SMCJ9.0CA-M3/9AT must be mounted on minimum recommended copper pad areas: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, per Vishay's datasheet. Short, wide traces are advised between the device and protected node to minimize inductance, and grounding should connect directly to large internal planes. The SMCJ9.0CA-M3/9AT's SMC package supports standard reflow profiles but requires adherence to MSL Level 1 handling guidelines despite its moisture-insensitive rating.
SMCJ9.0CA-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ9.0CA-M3/9AT FAQ
1.How can I place an order for SMCJ9.0CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CA-M3/9AT 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 SMCJ9.0CA-M3/9AT reliable?
The price and inventory of SMCJ9.0CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CA-M3/9AT?
SMCJ9.0CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CA-M3/9AT 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 SMCJ9.0CA-M3/9AT?
For technical support, including SMCJ9.0CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ9.0CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CA-M3/9AT 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 SMCJ9.0CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CA-M3/9AT?
All SMCJ9.0CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CA-M3/9AT, 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 SMCJ9.0CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ9.0CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CA-M3/9AT Tags
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