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Vishay General Semiconductor - Diodes Division SMCJ9.0CA-E3/9AT
- Part No.:
- SMCJ9.0CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CA-E3/9AT.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,310
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Product details
Overview
SMCJ9.0CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. 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 (PPPM) with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ9.0CA-E3/9AT datasheet, SMCJ9.0CA-E3/9AT pinout, SMCJ9.0CA-E3/9AT application, or SMCJ9.0CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification eligibility, and compatibility with automated SMT placement on 8 mm × 8 mm copper pads per JEDEC standard.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown threshold (VBR min = 10.0 V, max = 11.1 V at IT = 1 mA), it avalanches into low-impedance conduction to divert surge energy away from downstream circuitry. Its bidirectional structure ensures symmetrical clamping in both polarities without polarity marking.
Thermal design relies on junction-to-lead thermal resistance (RθJL = 15 °C/W) and junction-to-ambient (RθJA = 75 °C/W), requiring PCB copper pad area (0.31" × 0.31") for rated 1500 W pulse handling. It meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - Breakdown voltage range confirming reliable avalanche initiation under transient stress. |
| VC @ IPPM | 15.4 V at 97.4 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on protected ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| ID @ VWM | 10 μA - Reverse leakage at stand-off voltage; ensures minimal quiescent power loss in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 2.06 mm lead spacing; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMCJ9.0CA-E3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with bidirectional functionality. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output for transient energy; no cathode band marking required. |
| Case (body) | Thermal and mechanical interface | Plastic body meets UL 94 V-0 flammability; transfers heat to PCB copper pads via lead frames. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 16750-2) and EFT bursts (IEC 61000-4-4). |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during clamping - critical for safeguarding 3.3 V or 5 V logic interfaces. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
| AEC-Q101 qualification path | Base P/NHE3 suffix variants are AEC-Q101 qualified - supports automotive-grade reliability validation. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and jump-start surges in vehicle body control modules. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across power input or signal line to ground. Use Value: Limits clamped voltage to 15.4 V, ensuring survival of 16 V-rated components during 12 V system transients. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) in PLC analog I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional voltage clamp between signal and return, absorbing ±1 kV ESD and inductive switching spikes. Use Value: Symmetrical clamping prevents signal inversion or latch-up during bipolar transients on ungrounded sensor lines. |
| Consumer Power Adapter Input Stage | Telecom Ethernet Port Surge Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after rectification, guarding synchronous rectifiers and controllers. IC Role / Device Role / Timing Role: Fast-response parallel protector triggered within <1 ps to clamp flyback-induced spikes. Use Value: 15.4 V VC ensures MOSFETs with 20 V VDS rating remain within safe SOA during 10/1000 μs surges. |
Use Scenario: Primary-level surge protection on RJ45 magnetics common-mode lines in PoE-enabled switches and routers. IC Role / Device Role / Timing Role: Common-mode TVS pair (two SMCJ9.0CA devices) across differential pairs to suppress lightning-induced common-mode transients. Use Value: 10 μA ID at 9.0 V minimizes standby current impact on IEEE 802.3af/at power budgeting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA-E3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM and VC. | Reduced surge margin; suitable only for lower-energy threats (e.g., IEC 61000-4-2 ESD, not ISO 7637-2). | Select when board space is constrained and peak surge energy is ≤600 W. |
| SMCJ9.0A-E3/9AT | Unidirectional version; includes cathode band marking and forward voltage drop (VF = 3.5 V @ 100 A). | Requires correct polarity orientation; unsuitable for AC or floating signals without external biasing. | Choose only for DC-biased rails where polarity is fixed and forward conduction must be blocked. |
Compared with SMBJ9.0CA-E3/52T and SMCJ9.0A-E3/9AT, the SMCJ9.0CA-E3/9AT uniquely delivers 1500 W bidirectional clamping in SMC footprint - enabling higher-surge automotive and industrial designs without polarity constraints or derating penalties.
Availability
SMCJ9.0CA-E3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog I/O modules, consumer power adapter secondary sides, and telecom PoE port protection requiring stable component supply and full traceability.
Supply support for SMCJ9.0CA-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, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes demand robust, standardized, and validated clamping performance.
FAQ
What does the "CA" suffix indicate in SMCJ9.0CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration: SMCJ9.0CA-E3/9AT provides symmetrical clamping in both polarities, with identical breakdown and clamping characteristics for positive and negative transients. Unlike unidirectional variants (e.g., SMCJ9.0A), it has no cathode marking and is used where signal or power lines lack defined polarity - such as AC-coupled interfaces or floating sensor outputs. This makes SMCJ9.0CA-E3/9AT ideal for protecting balanced lines without risk of incorrect orientation during assembly.
Is SMCJ9.0CA-E3/9AT AEC-Q101 qualified?
The base part number SMCJ9.0CA-E3/9AT is RoHS-compliant commercial grade; AEC-Q101 qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., SMCJ9.0CAHE3_A/I). While SMCJ9.0CA-E3/9AT shares the same die and package construction, formal AEC-Q101 test reports and automotive-grade traceability require the HE3/HM3 ordering code. For automotive production, specify SMCJ9.0CAHE3_A/I to ensure compliance with stress-test requirements including temperature cycling, HTRB, and ESD.
How does SMCJ9.0CA-E3/9AT compare to SMAJ9.0CA in terms of surge capability?
SMCJ9.0CA-E3/9AT delivers 1500 W peak pulse power (PPPM), whereas SMAJ9.0CA is rated for 400 W - a 275 % increase. This difference stems from the larger SMC (DO-214AB) package's superior thermal mass and lower junction-to-lead resistance (RθJL = 15 °C/W vs. ~30 °C/W for SMA), enabling SMCJ9.0CA-E3/9AT to handle ISO 7637-2 Pulse 5a load dump events that would exceed SMAJ9.0CA's safe operating area. Use SMCJ9.0CA-E3/9AT where sustained surge energy exceeds 400 W.
What is the recommended PCB pad layout for SMCJ9.0CA-E3/9AT?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for SMCJ9.0CA-E3/9AT to achieve full 1500 W PPPM rating. These pads must be thermally connected to internal ground/power planes via ≥4 thermal vias (0.3 mm diameter) per pad. Smaller pads reduce surge capability significantly - e.g., 0.1" × 0.1" pads limit PPPM to ~600 W. The SMCJ9.0CA-E3/9AT datasheet Figure 2 provides derating curves showing power reduction above 25 °C ambient based on actual pad size and copper thickness.
Can SMCJ9.0CA-E3/9AT be used in place of SMCJ9.0A-E3/9AT?
SMCJ9.0CA-E3/9AT can replace SMCJ9.0A-E3/9AT only if the circuit is inherently bidirectional or polarity-independent - such as AC signal paths, transformer-coupled interfaces, or floating grounds. However, substituting it in a unidirectional DC rail may cause unintended conduction during normal forward bias due to absence of cathode-defined blocking direction. Since SMCJ9.0A-E3/9AT has VF = 3.5 V at 100 A while SMCJ9.0CA-E3/9AT lacks forward voltage specification, verify reverse leakage and forward behavior in-system before interchange. SMCJ9.0CA-E3/9AT is not a drop-in replacement for SMCJ9.0A-E3/9AT without circuit review.
SMCJ9.0CA-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:
- 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 (SMCJ)
SMCJ9.0CA-E3/9AT FAQ
1.How can I place an order for SMCJ9.0CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CA-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 SMCJ9.0CA-E3/9AT reliable?
The price and inventory of SMCJ9.0CA-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 SMCJ9.0CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CA-E3/9AT?
SMCJ9.0CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CA-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 SMCJ9.0CA-E3/9AT?
For technical support, including SMCJ9.0CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ9.0CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CA-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 SMCJ9.0CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CA-E3/9AT?
All SMCJ9.0CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CA-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 SMCJ9.0CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ9.0CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CA-E3/9AT Tags
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