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Taiwan Semiconductor Corporation SMCJ9.0CA
- Part No.:
- SMCJ9.0CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CA.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,869
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Product details
Overview
SMCJ9.0CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 9.0V working stand-off voltage (VWM), 10.0–11.1V breakdown voltage (VBR), and 15.4V maximum clamping voltage (VC) at 10A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ9.0CA datasheet, SMCJ9.0CA pinout, SMCJ9.0CA application, or SMCJ9.0CA equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal resistance (RθJC = 10°C/W), moisture sensitivity level (MSL 1), and direct alternatives for ESD/inductive-spike protection in 12V systems.
Technical Context
The SMCJ9.0CA is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional surge suppression without polarity dependency. Its clamping response time is typically less than 1.0 ps, and it maintains <1 µA reverse leakage at VWM = 9.0 V.
It operates across –55°C to +150°C junction temperature range, supports 200A non-repetitive forward surge (IFSM), and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its molded DO-214AB case.
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 / 11.1 V @ IT = 1 mA - Confirmed breakdown threshold range under standardized test conditions |
| VC @ IPPM | 15.4 V @ 10 A - Clamped voltage during 10/1000 µs surge, defining worst-case overvoltage seen by protected IC |
| PPK | 1500 W - Peak pulse power handling per single 1 ms transient, derated above 25°C ambient |
| RθJC | 10 °C/W - Junction-to-case thermal resistance enabling effective heatsinking through PCB copper pour |
| IR @ VWM | <1 µA - Low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Package | DO-214AB (SMC) - Surface-mount outline with 0.210 g mass, matte tin-plated leads, and MSL 1 rating |
Pinout & Package
DO-214AB (SMC) package: surface-mount, dual-leaded, cathode-banded for unidirectional variants; SMCJ9.0CA is bidirectional and marked with "GDV" code - no polarity marking required. Case meets UL 94V-0; terminals solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output - no polarity constraint enables flexible PCB layout in AC-coupled or floating rail protection |
| Case (exposed metal pad) | Thermal conduction path | Not electrically connected; used solely for heat dissipation into PCB copper area |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupled noise) - critical for automotive 12V system qualification |
| Fast response time | <1.0 ps rise-to-clamp - limits voltage overshoot before downstream ICs experience stress beyond safe operating area |
| Low clamping ratio (VC/VBR) | 1.39 (15.4 V / 11.1 V) - tighter ratio than standard Zener-based protectors, improving margin for 3.3V/5V logic interfaces |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and export compliance |
| Moisture sensitivity level | MSL 1 - no bake requirement prior to reflow; compatible with standard SMT assembly lines without dry-pack handling |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12V battery-supplied ECUs exposed to load-dump transients up to ±100V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary clamping device placed at connector entry point, shunting surge energy before it reaches CAN transceivers and microcontrollers. Use Value: Limits rail voltage to ≤15.4V during 10A surge, preserving 3.3V/5V logic supply integrity and avoiding brownout resets. | Use Scenario: 24V DC digital input modules receiving signals from field sensors subject to inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to absorb both positive and negative polarity transients induced by relay coil de-energization. Use Value: Prevents latch-up in optocoupler input stages and eliminates need for external polarity selection circuitry. |
| LED Driver Overvoltage Clamp | USB-C Port ESD Shielding |
Use Scenario: Constant-current LED drivers powered from unregulated 12V bus in commercial lighting fixtures. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver input capacitor to clamp surges caused by nearby motor switching or lightning-induced coupling. Use Value: Maintains driver IC operation below its absolute maximum 20V input rating, preventing catastrophic failure during 1500W transient events. | Use Scenario: USB-C receptacle on portable medical devices requiring IEC 61000-4-2 Level 4 ESD immunity (±15 kV air, ±8 kV contact). IC Role / Device Role / Timing Role: Secondary-level TVS placed between VBUS and GND to suppress fast-rising ESD pulses that bypass primary front-end filters. Use Value: Clamps VBUS to ≤15.4V within 1 ps, protecting USB PD controller and port multiplexer from gate oxide rupture. |
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 (Bourns) | Same VWM (9.0 V), lower PPK (600 W), higher VC (16.5 V @ 6.5 A), SMB package (smaller footprint, higher RθJA) | Lower surge capacity suits consumer-grade 12V inputs; not recommended for automotive load-dump duty cycles | Select when board space is constrained and peak surge energy is ≤600W; verify thermal margin with RθJA = 110°C/W |
| P6SMB9.0CA (ON Semiconductor) | Identical VWM (9.0 V), same PPK (1500 W), slightly higher VC (15.5 V @ 10 A), same DO-214AB package and MSL 1 rating | No functional deviation - validated drop-in replacement with identical layout and thermal performance | Preferred for dual-sourcing; shares identical pinout, clamping curve, and qualification data for ISO 7637-2 |
Compared with SMCJ9.0CA, SMBJ9.0CA trades surge robustness for compactness, while P6SMB9.0CA delivers identical protection performance with second-source assurance and full automotive qualification traceability.
Availability
SMCJ9.0CA is available at Aetrix Electronics and suitable for automotive control units, industrial PLC I/O modules, LED driver front-ends, and USB-C power delivery protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ9.0CA 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
Taiwan Semiconductor Company (TSC) is a vertically integrated Taiwanese manufacturer specializing in discrete power semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO/TS 16949-certified production.
The SMCJ series was engineered specifically for high-energy transient suppression in automotive and industrial 12V/24V systems, emphasizing low clamping voltage, fast response, and robust ISO 7637-2 compliance.
FAQ
What is the clamping voltage of SMCJ9.0CA at its rated peak pulse current?
The SMCJ9.0CA has a maximum clamping voltage (VC) of 15.4 V when subjected to a 10 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ9.0CA maintains this clamping performance across its full operating temperature range of –55°C to +150°C.
Is SMCJ9.0CA unidirectional or bidirectional, and how is polarity indicated?
The SMCJ9.0CA is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive- and negative-polarity transients without requiring orientation during placement. Unlike unidirectional variants (e.g., SMCJ9.0), the CA suffix explicitly denotes bidirectional construction, and the device carries no cathode band marking. Its DO-214AB package terminals are functionally interchangeable, simplifying layout for AC-coupled or floating-rail protection schemes.
Does SMCJ9.0CA meet automotive transient immunity standards?
Yes, the SMCJ9.0CA meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - covering key automotive transient threats including load dump, switch-off inductive spikes, and coupled noise. Its 1500W peak power rating, sub-1 ps response time, and validated clamping behavior under standardized waveforms make it suitable for front-end protection in 12V ECUs, body control modules, and infotainment power supplies where compliance with OEM-level EMC specifications is mandatory.
What is the thermal resistance profile of SMCJ9.0CA, and how does it affect PCB layout?
The SMCJ9.0CA has a junction-to-case thermal resistance (RθJC) of 10°C/W and a junction-to-ambient resistance (RθJA) of 55°C/W when mounted on a standard FR-4 PCB with 1 in² copper pour. To sustain repeated 1500W surges, designers must provide adequate copper area beneath the DO-214AB package's exposed pad and ensure airflow or thermal vias where ambient temperatures exceed 70°C. The low RθJC enables efficient heat transfer to heatsink planes, reducing thermal stress during transient events.
Can SMCJ9.0CA be used in place of SMCJ9.0 in an existing design?
No - SMCJ9.0CA and SMCJ9.0 are not interchangeable without validation. SMCJ9.0 is unidirectional and requires correct polarity placement with cathode band alignment; SMCJ9.0CA is bidirectional and polarity-agnostic. While both share identical VWM (9.0 V) and clamping performance, substituting one for the other may compromise protection if the original design relies on directional blocking behavior or uses asymmetric filtering. Always verify circuit topology and surge directionality before replacement.
SMCJ9.0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- 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):
- 102A
- 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 FAQ
1.How can I place an order for SMCJ9.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CA 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 reliable?
The price and inventory of SMCJ9.0CA 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 is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CA?
SMCJ9.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CA 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?
For technical support, including SMCJ9.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CA requirements.
6.How does Aetrix verify that SMCJ9.0CA is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CA 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 meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CA?
All SMCJ9.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CA, 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 part is unused and in its original packaging.
Return procedure for SMCJ9.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CA Tags
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