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Vishay General Semiconductor - Diodes Division SMCJ90CA-M3/9AT
- Part No.:
- SMCJ90CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CA-M3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
SMCJ90CA-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 standoff voltage of 90 V, clamping voltage of 146 V at 10.3 A peak pulse current, and operates across -55 °C to +150 °C junction temperature range. It protects signal lines and power rails in automotive sensor interfaces and industrial control I/O modules.
For engineers reviewing the SMCJ90CA-M3/9AT datasheet, SMCJ90CA-M3/9AT pinout, SMCJ90CA-M3/9AT application, or SMCJ90CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, 146 V VC at rated IPPM, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AB footprint.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced surges. Its bidirectional architecture enables symmetrical clamping without polarity sensitivity, eliminating need for orientation during placement. The device meets MSL Level 1 per J-STD-020 and supports peak surge currents up to 10.3 A under standardized 10/1000 µs transient conditions.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation on 8.0 mm × 8.0 mm copper pads per terminal. It is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes - the SMCJ90CA-M3/9AT variant is commercial-grade, halogen-free, and RoHS-compliant per Vishay's material categorization standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 90 V - maximum continuous reverse operating voltage before clamping begins |
| Clamping Voltage (VC) | 146 V at 10.3 A IPPM - peak voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 1500 W - surge energy handling capacity under standardized 10/1000 µs waveform |
| Breakdown Voltage (VBR) | 100–111 V at 1 mA IT - guaranteed conduction onset range for bidirectional operation |
| Junction Temperature Range | -55 °C to +150 °C - operational limits defining thermal design margins for PCB layout |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm thermal pad requirement |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), UL 94 V-0 molding compound, JESD201 Class 2 whisker resistance |
Pinout & Package
SMCJ90CA-M3/9AT is housed in an SMC (DO-214AB) surface-mount package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking - both terminals are functionally symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | Accepts surge current from either terminal during bidirectional clamping event |
| Cathode | Transient current exit point (either direction) | Completes low-impedance path to ground or reference rail regardless of surge polarity |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power | Supports robust immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth) in properly laid out PCBs |
| Fast response time (<1 ns) | Clamps transients before sensitive downstream ICs experience overvoltage stress |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end equipment |
| MSL Level 1 rating | Allows unlimited floor life and reflow soldering at 260 °C peak without moisture-related damage |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines or between signal and chassis ground. Use Value: Limits transient voltage to ≤146 V, preventing latch-up or permanent damage to 5 V or 3.3 V transceiver ICs during 12 V system load dump events. |
Use Scenario: Safeguarding analog input channels (e.g., 4–20 mA loops) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage protector mounted at connector entry point before signal conditioning circuitry. Use Value: Absorbs up to 1500 W surge energy while maintaining <1 µA leakage at 90 V, preserving measurement accuracy in high-impedance sensing paths. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHY interface components on base station line cards from induced lightning surges. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection in hybrid protection schemes. Use Value: Provides low-clamping-voltage follow-on protection with 146 V VC, ensuring PHY ICs remain within absolute maximum ratings during coordinated surge events. |
Use Scenario: Suppressing commutation spikes generated by brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Across-the-line suppressor connected directly across motor terminals to quench inductive kickback. Use Value: Handles repetitive 10.3 A surges at 146 V clamping level, extending MOSFET driver lifetime and reducing EMI radiated from motor leads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC90CA-13-F | Same 90 V VWM and 146 V VC, but in SMA (DO-214AC) package - smaller footprint, lower thermal mass | Limited to ≤1000 W PPPM; less suitable for high-energy industrial surges | Select when board space is constrained and surge energy remains below 1000 W |
| 1.5KE91CA | Through-hole TO-218 package, identical electrical specs (90 V VWM, 146 V VC), higher RθJA (≈100 °C/W) | Requires wave soldering or hand assembly; unsuitable for fully automated SMT lines | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized over production efficiency |
Compared with SAC90CA-13-F and 1.5KE91CA, the SMCJ90CA-M3/9AT delivers optimal balance of high-energy surge handling (1500 W), SMT manufacturability, and thermal reliability on standard 8 mm² copper pads - making it preferred for volume automotive and industrial PCB assemblies.
Availability
SMCJ90CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line card protection, and consumer appliance motor control requiring stable component supply and halogen-free compliance.
Supply support for SMCJ90CA-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, power efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMCJ90CA-M3/9AT at its rated peak pulse current?
The SMCJ90CA-M3/9AT has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current (IPPM) of 10.3 A under a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88394) and defines the upper voltage limit imposed on protected circuits during surge events. The SMCJ90CA-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCJ90CA-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ90CA-M3/9AT is a commercial-grade, halogen-free, RoHS-compliant variant and is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, Vishay offers the SMCJ90CA-HM3_X series (e.g., SMCJ90CA-HM3_A), which carries the HM3 suffix and explicit AEC-Q101 qualification noted in the ordering information table. The SMCJ90CA-M3/9AT remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated.
What does the "CA" suffix indicate in SMCJ90CA-M3/9AT?
The "CA" suffix in SMCJ90CA-M3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities without requiring orientation during PCB placement. This distinguishes it from unidirectional variants (e.g., SMCJ90A), which feature a cathode band and conduct only in reverse bias. The SMCJ90CA-M3/9AT's bidirectional behavior is confirmed in the "DEVICES FOR BIDIRECTION APPLICATIONS" section of the Vishay datasheet.
What is the recommended PCB pad layout for SMCJ90CA-M3/9AT?
Vishay specifies a minimum pad layout of 0.31" × 0.31" (8.0 mm × 8.0 mm) copper area per terminal for SMCJ90CA-M3/9AT to achieve rated thermal and surge performance. This layout ensures adequate heat dissipation and current spreading during 10/1000 µs transients. Deviating from this recommendation reduces peak pulse power derating and may compromise clamping consistency. The SMCJ90CA-M3/9AT's DO-214AB footprint must align precisely with these dimensions to maintain specified RθJA = 75 °C/W.
How does the M3 suffix affect the material composition of SMCJ90CA-M3/9AT?
The M3 suffix on SMCJ90CA-M3/9AT indicates halogen-free, RoHS-compliant construction - specifically, the molding compound contains no brominated flame retardants and meets Vishay's material categorization standard (www.vishay.com/doc?99912). This differs from the E3 suffix (RoHS-compliant but not halogen-free) and supports compliance with stringent environmental regulations in EU and Asian markets. The SMCJ90CA-M3/9AT retains all electrical and thermal specifications of the base SMCJ90CA series.
SMCJ90CA-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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMCJ90CA-M3/9AT FAQ
1.How can I place an order for SMCJ90CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CA-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 SMCJ90CA-M3/9AT reliable?
The price and inventory of SMCJ90CA-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 SMCJ90CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ90CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CA-M3/9AT?
SMCJ90CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CA-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 SMCJ90CA-M3/9AT?
For technical support, including SMCJ90CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ90CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ90CA-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 SMCJ90CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ90CA-M3/9AT?
All SMCJ90CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CA-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 SMCJ90CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ90CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90CA-M3/9AT Tags
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