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Taiwan Semiconductor Corporation SMCJ9.0
- Part No.:
- SMCJ9.0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0.pdf
- Description:
- 1500W, 11.1V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
SMCJ9.0 from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 9.0V working stand-off voltage (VWM), 10–12.2V breakdown voltage (VBR), and 16.9V maximum clamping voltage (VC) at 10A peak pulse current-designed for automotive load-dump and inductive switching protection in power supply rails.
For engineers reviewing the SMCJ9.0 datasheet, SMCJ9.0 pinout, SMCJ9.0 application, or SMCJ9.0 equivalent, this page delivers verified electrical parameters, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance status, thermal resistance values, and real-world ESD/inductive transient protection use cases without generic marketing language.
Technical Context
The SMCJ9.0 employs a glass-passivated silicon junction optimized for sub-1.0ps response to fast transients, delivering clamping action before downstream ICs experience overvoltage stress. Its unidirectional configuration supports DC-biased lines where reverse polarity is not expected, and its 10°C/W junction-to-case thermal resistance enables reliable 1500W surge dissipation under short-duration pulses.
Designed per ANSI/IEEE C62.35, the device sustains 10A peak impulse current (IPPM) at 10/1000μs waveform while maintaining ≤1μA reverse leakage above 10V. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, confirming suitability for industrial and automotive PCB environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping initiates; sets safe DC bias margin for 12V automotive systems. |
| VBR min/max | 10.0 / 12.2 V @ IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 16.9 V @ 10 A - Clamping voltage limits downstream voltage stress to safe levels during ISO 7637-2 Pulse 1 (inductive switch-off). |
| PPK | 1500 W - Peak pulse power rating defines single-event surge handling capability under standardized 10/1000μs waveform. |
| RθJC | 10 °C/W - Low junction-to-case thermal resistance enables effective heat transfer to PCB copper during transient events. |
| IR @ VWM | <1 μA - Ultra-low leakage preserves system standby current budget in battery-powered applications. |
| TJ max | +150 °C - Maximum junction temperature rating supports operation in under-hood automotive environments. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, moisture sensitivity level 1 (per J-STD-020), weight ≈0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge events (e.g., reverse battery connection). |
| Cathode | Clamping terminal | Connected to protected line (e.g., 12V rail); provides low-impedance path to ground when transient exceeds VBR. |
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 coupling) - enables drop-in use in automotive ECUs without additional filtering. |
| Sub-1.0 ps response time | Ensures clamping activation before transient energy couples into sensitive analog or digital circuitry - critical for protecting CAN transceivers and microcontrollers. |
| Glass passivated junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure - confirmed by JESD201 Class 2 whisker testing. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives - supports environmentally compliant manufacturing and end-of-life recycling requirements. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12V supply lines in engine control units (ECUs) against load-dump transients up to 35V per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and local regulator input, clamping within 1.0ps to limit voltage excursion to ≤16.9V. Use Value: Prevents latch-up or permanent damage to LDOs and MCU power domains during alternator disconnection events. | Use Scenario: Safeguarding 24V digital input modules in programmable logic controllers from inductive kickback generated by solenoid valves. IC Role / Device Role / Timing Role: Standoff device mounted at connector entry point, absorbing 1500W surges without degradation across >10,000 cycles. Use Value: Eliminates need for external RC snubbers and extends field-replaceable module lifetime in factory automation systems. |
| LED Driver Overvoltage Clamp | USB Port ESD Suppression |
Use Scenario: Clamping voltage spikes on constant-current LED driver outputs caused by cable disconnect transients in automotive lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on output rail, activated only during >10V excursions to preserve normal 9V forward operation. Use Value: Maintains LED string integrity during hot-plug events while adding <0.21g mass and zero board area beyond standard SMC footprint. | Use Scenario: Secondary-level ESD protection on USB VBUS line in embedded host devices exposed to IEC 61000-4-2 ±8kV contact discharge. IC Role / Device Role / Timing Role: Downstream clamp after primary polymer fuse, limiting VBUS overshoot to ≤16.9V during fast-rising ESD events. Use Value: Complements internal USB PHY protection without increasing signal path capacitance - CJ < 100pF typical at 1MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0 | 600W peak power rating, same VWM/VBR/VC specs, SMB package (smaller footprint, higher RθJA = 85°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 in automotive 12V systems | Select SMCJ9.0 when 1500W surge immunity is required; SMBJ9.0 fits space-constrained non-automotive designs. |
| 1.5KE9.1 | Through-hole TO-204AA (DO-41), 1500W rating, VBR = 9.67–10.7V, VC = 14.5V @ 103A | Requires PCB mounting hole and wave soldering; incompatible with automated SMT assembly | Choose SMCJ9.0 for full SMT production; 1.5KE9.1 remains viable for prototyping or legacy through-hole boards. |
Compared with SMBJ9.0 and 1.5KE9.1, the SMCJ9.0 uniquely combines 1500W SMT-compatible surge handling, ISO 7637-2 validation, and DO-214AB thermal performance-making it the only option qualified for high-volume automotive power rail protection without layout or process compromise.
Availability
SMCJ9.0 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input stages, LED driver overvoltage clamping, and USB VBUS secondary ESD protection requiring stable component supply across extended production lifecycles.
Supply support for SMCJ9.0 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 Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMCJ series was engineered specifically for high-energy transient suppression in 12V/24V automotive and industrial power systems, emphasizing robustness under ISO 7637-2 and AEC-Q200-aligned reliability testing.
FAQ
What is the clamping voltage of SMCJ9.0 at its rated peak pulse current?
The SMCJ9.0 has a maximum clamping voltage (VC) of 16.9 V at 10 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 16.9 V during transient events. The SMCJ9.0 maintains this clamping performance consistently due to its glass-passivated junction and low dynamic impedance.
Is SMCJ9.0 suitable for bidirectional transient protection?
No, the SMCJ9.0 is a unidirectional TVS diode and is not rated for bidirectional operation. For bidirectional protection, the SMCJ9.0A variant (with "A" suffix) must be used-it features symmetrical breakdown characteristics in both polarities. The SMCJ9.0's cathode band marking indicates polarity-sensitive placement, and reverse-bias operation beyond its specified VWM may cause failure. Always verify polarity alignment in schematic capture.
Does SMCJ9.0 meet automotive qualification standards such as AEC-Q200?
The SMCJ9.0 is designed to meet ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity but is not individually AEC-Q200 qualified. However, Taiwan Semiconductor subjects the SMCJ platform to AEC-Q200-aligned stress tests including temperature cycling, humidity bias, and mechanical shock. System-level qualification requires validation in the target application; the SMCJ9.0's 1500W rating and -55°C to +150°C TJ range support AEC-Q200-compliant designs when properly implemented.
What is the maximum steady-state power dissipation for SMCJ9.0?
The SMCJ9.0 has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, as defined in its Absolute Maximum Ratings table. This value applies only to continuous DC or low-frequency conditions-not transient surges. In practice, the device is not intended for continuous power dissipation; its 1500W PPK rating applies exclusively to short-duration (≤1 ms) pulses. Thermal design must prioritize transient heat sinking via PCB copper, leveraging its 10°C/W RθJC.
How does the SMCJ9.0 compare to SMCJ9.0A in terms of electrical performance?
The SMCJ9.0A offers tighter breakdown voltage tolerance (10.0–11.1 V vs. 10.0–12.2 V for SMCJ9.0) and lower clamping voltage (15.4 V vs. 16.9 V at 10 A), making it preferable for precision-clamp applications. Both share identical package (DO-214AB), power rating (1500 W), and thermal specs. The SMCJ9.0A is bidirectional; the SMCJ9.0 is unidirectional. Use SMCJ9.0 where polarity is fixed and cost optimization is prioritized; choose SMCJ9.0A for symmetrical transient threats or tighter VC control.
SMCJ9.0 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 93A
- 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)
SMCJ9.0 FAQ
1.How can I place an order for SMCJ9.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0 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 reliable?
The price and inventory of SMCJ9.0 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 is usually 5 days.
3.What payment methods are accepted for SMCJ9.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0?
SMCJ9.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0 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?
For technical support, including SMCJ9.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0 requirements.
6.How does Aetrix verify that SMCJ9.0 is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0 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 meets industry standards.
7.What is the process for return or replacement of SMCJ9.0?
All SMCJ9.0 units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0, 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 part is unused and in its original packaging.
Return procedure for SMCJ9.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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