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Taiwan Semiconductor Corporation SMCJ9.0C
- Part No.:
- SMCJ9.0C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0C.pdf
- Description:
- 1500W, 11.1V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
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Product details
Overview
SMCJ9.0C from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 9.0V working stand-off voltage (VWM), 10.0–12.2V breakdown voltage (VBR), and 16.9V maximum clamping voltage (VC) at 10A peak pulse current - designed for ESD and surge protection of automotive power lines and industrial I/O interfaces.
For engineers reviewing the SMCJ9.0C datasheet, SMCJ9.0C pinout, SMCJ9.0C application, or SMCJ9.0C equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, unidirectional vs. bidirectional configuration (C suffix = bidirectional), thermal derating above 25°C, and compatibility with automated SMT placement on high-reliability PCBs.
Technical Context
The SMCJ9.0C implements a glass-passivated silicon junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR min) and low leakage (<1 µA at 9.0 V). Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management.
It meets ISO 7637-2 immunity requirements for automotive electronics and supports repetitive surge handling up to 1500 W (1 ms pulse), with junction temperature range from –55°C to +150°C and thermal resistance RθJA = 55°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR min/max | 10.0 / 12.2 V @ IT = 1 mA - Verified breakdown threshold ensures predictable turn-on during transients; tight tolerance reduces design margin uncertainty. |
| VC @ IPPM | 16.9 V @ 10 A - Clamped voltage during worst-case 10 A surge; determines maximum stress imposed on downstream ICs or sensors. |
| PPK | 1500 W - Peak pulse power rating for 1 ms waveform; validates capability to absorb automotive load-dump or inductive-switching energy. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on systems. |
| Package | DO-214AB (SMC) - Industry-standard surface-mount outline enabling automated assembly and thermal performance up to 5 W steady-state dissipation. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation eliminates functional polarity dependence).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No functional polarity - either terminal serves as input/output; clamps positive or negative surges equally across the device terminals. |
| Case (exposed metal pad) | Thermal conduction path | Not electrically connected; provides mechanical mounting and heat dissipation to PCB copper pour per JEDEC MO-214 standard. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and humidity exposure, critical for automotive under-hood reliability. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validates robustness against real-world vehicle electrical disturbances including battery disconnect, alternator load dump, and inductive switching noise. |
| Moisture sensitivity level 1 (J-STD-020) | Enables direct placement without baking or dry-pack handling - reduces manufacturing cost and process complexity. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for automotive and industrial end equipment without compromising surge performance. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump transients and alternator ripple in 12 V vehicle systems. IC Role / Device Role: Bidirectional TVS clamp placed between power rail and ground, shunting surge energy before it reaches sensitive analog front-ends. Use Value: Limits voltage excursion to ≤16.9 V during 10 A transients, preventing latch-up or gate oxide damage in 5 V/3.3 V logic devices. | Use Scenario: Safeguarding 4–20 mA current-loop sensor inputs in PLC modules exposed to field wiring ESD and inductive kickback. IC Role / Device Role: Transient suppression element bridging signal line to chassis ground, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal fidelity with <1 µA leakage at 9 V, avoiding offset errors in precision current measurement circuits. |
| LED Driver Output Protection | RS-485 Transceiver Port Protection |
Use Scenario: Shielding constant-current LED driver outputs from voltage spikes caused by hot-plug events or cable disconnection in architectural lighting systems. IC Role / Device Role: Parallel-connected TVS across output terminals, clamping transients before they propagate into MOSFET gate drivers or current-sense amplifiers. Use Value: Withstands 1500 W pulses without degradation, ensuring long-term reliability in outdoor-rated luminaires subject to lightning-induced surges. | Use Scenario: Hardening RS-485 communication ports in factory automation equipment against EFT (electrical fast transients) and surge coupling from adjacent motor drives. IC Role / Device Role: Bidirectional protection device placed differential-line-to-ground, suppressing common-mode transients while preserving data integrity. Use Value: Symmetrical clamping (±16.9 V) prevents receiver saturation and maintains >200 kbps data rate under IEC 61000-4-4 Level 4 stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0C (Bourns) | Same VWM (9.0 V), lower PPK (600 W), DO-214AA (SMB) package - smaller footprint but reduced surge capacity. | Preferred for space-constrained consumer electronics; insufficient for automotive load-dump per ISO 7637-2. | Select SMCJ9.0C when 1500 W surge headroom and DO-214AB thermal mass are required. |
| P6SMB9.0C (ON Semiconductor) | Identical VWM (9.0 V), same PPK (1500 W), DO-214AA (SMB) package - lower thermal mass and higher RθJA (75°C/W). | Acceptable for lower-duty-cycle industrial transients; requires larger copper area to match SMCJ9.0C's thermal performance. | Choose SMCJ9.0C for designs needing proven DO-214AB thermal derating and J-STD-020 Level 1 handling. |
Compared with SMBJ9.0C and P6SMB9.0C, the SMCJ9.0C delivers superior thermal robustness (RθJA = 55°C/W vs. ≥75°C/W) and verified ISO 7637-2 compliance - making it the preferred choice for automotive power rail and high-reliability industrial port protection where sustained surge energy must be safely dissipated.
Availability
SMCJ9.0C is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, LED driver output safeguarding, and RS-485 port surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMCJ9.0C 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and computing markets.
The SMCJ series was developed specifically for high-energy transient suppression in harsh environments - emphasizing ISO 7637-2 compliance, J-STD-020 Level 1 moisture resistance, and automated SMT compatibility.
FAQ
What does the 'C' suffix indicate in SMCJ9.0C?
The 'C' suffix in SMCJ9.0C denotes bidirectional configuration - meaning the device clamps transients of either polarity symmetrically across its terminals. Unlike unidirectional variants (e.g., SMCJ9.0), the SMCJ9.0C has no functional anode/cathode distinction and is used where both positive and negative voltage excursions must be suppressed, such as across differential signal lines or AC-coupled rails. This is confirmed in the datasheet's "Devices for bipolar applications" section.
What is the maximum clamping voltage of SMCJ9.0C and under what test condition?
The maximum clamping voltage of SMCJ9.0C is 16.9 V, measured at a peak pulse current (IPPM) of 10 A with a 10/1000 µs waveform (per Fig.5 in the datasheet). This value represents the upper limit of voltage seen by protected circuitry during a standardized surge event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMCJ9.0C achieves this clamping performance while dissipating 1500 W peak power.
Is SMCJ9.0C compliant with automotive transient immunity standards?
Yes, SMCJ9.0C meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b - covering key automotive electrical disturbance waveforms including battery disconnect, alternator load dump, and inductive switching noise. This compliance is explicitly stated in the "FEATURES" section of the datasheet and validated through standardized surge testing. It makes the SMCJ9.0C suitable for 12 V vehicle subsystems like body control modules and infotainment power supplies.
What is the junction-to-ambient thermal resistance (RθJA) of SMCJ9.0C?
The junction-to-ambient thermal resistance (RθJA) of SMCJ9.0C is 55°C/W, as specified in the "THERMAL PERFORMANCE" table. This value assumes standard PCB mounting with adequate copper pour and reflects the device's ability to transfer heat from the silicon junction to ambient air. Lower RθJA than comparable SMB-package TVS diodes (e.g., 75°C/W) enables more reliable operation at elevated ambient temperatures and higher duty-cycle surge conditions.
Does SMCJ9.0C require special handling for moisture sensitivity?
No - SMCJ9.0C has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and placed directly onto PCBs without baking or dry-pack conditioning. This simplifies manufacturing logistics and eliminates yield loss from moisture-related popcorning during reflow. The Level 1 rating is confirmed in the "FEATURES" list and applies to all SMCJ5.0–SMCJ170(A) variants.
SMCJ9.0C 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:
- 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)
SMCJ9.0C FAQ
1.How can I place an order for SMCJ9.0C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0C 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 SMCJ9.0C reliable?
The price and inventory of SMCJ9.0C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0C is usually 5 days.
3.What payment methods are accepted for SMCJ9.0C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0C?
SMCJ9.0C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0C 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 SMCJ9.0C?
For technical support, including SMCJ9.0C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0C requirements.
6.How does Aetrix verify that SMCJ9.0C is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0C 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 SMCJ9.0C meets industry standards.
7.What is the process for return or replacement of SMCJ9.0C?
All SMCJ9.0C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0C, 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 SMCJ9.0C part is unused and in its original packaging.
Return procedure for SMCJ9.0C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0C Tags
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