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Taiwan Semiconductor Corporation SMCJ11CA
- Part No.:
- SMCJ11CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CA.pdf
- Description:
- TVS DIODE 11VWM 18.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,132
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Product details
Overview
SMCJ11CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 11V working stand-off voltage (VWM), 12.2–13.5V breakdown voltage (VBR), and 18.2V maximum clamping voltage (VC) at 86A peak pulse current - designed for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the SMCJ11CA datasheet, SMCJ11CA pinout, SMCJ11CA application, or SMCJ11CA equivalent, this device is selected for high-energy transient suppression where fast response (<1.0ps), low leakage (<1µA @ 11V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required in space-constrained surface-mount designs.
Technical Context
The SMCJ11CA is a bipolar (bidirectional) TVS diode built using glass-passivated junction technology, enabling symmetrical clamping in both polarities without external polarity constraints. Its 1500W peak pulse power rating (tp = 1ms) and 10°C/W junction-to-case thermal resistance support robust surge handling in automotive and industrial power rails.
It operates across –55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements - confirming suitability for lead-free reflow assembly and harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for 12V automotive systems. |
| VBR min/max | 12.2 V / 13.5 V @ IT = 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients above nominal system voltage. |
| VC @ IPPM | 18.2 V @ 86 A - Clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 2b (inductive switch-off) events. |
| PPK | 1500 W - Peak pulse power capability supports single-event surges up to 10/1000 µs waveform per REA standard. |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids false triggering in always-on circuits. |
| Package | DO-214AB (SMC) - Surface-mount outline with 7.11 mm x 6.22 mm footprint and 2.62 mm height; compatible with automated placement and IPC-7351B land patterns. |
Pinout & Package
DO-214AB (SMC) package: dual-leaded, molded plastic case with cathode band marking for unidirectional variants; SMCJ11CA is bidirectional and marked "GDZ" - no polarity dependence, symmetric terminal behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output for transient energy; no orientation required during PCB placement. |
| Case (non-connected) | Thermal conduction path | Exposed copper pad on underside aids heat dissipation; requires thermal relief or direct copper pour for >100W sustained operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - meets OEM automotive EMC requirements. |
| Fast response time | <1.0 ps rise time from 0 V to VBR min ensures clamping initiates before sensitive logic or analog circuitry sustains damage. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for green manufacturing and export-regulated markets. |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus Transient Suppression |
|---|---|
Use Scenario: 12V battery line in engine control units exposed to load dump (up to 40V) and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDOs and microcontrollers. Use Value: Limits rail voltage to ≤18.2V during 1500W transients, preventing latch-up or gate oxide rupture in downstream silicon. | Use Scenario: CAN FD physical layer interface subjected to ESD (±8kV contact) and coupled noise from adjacent high-power wiring. IC Role / Device Role / Timing Role: Bidirectional shunt protector between CANH/CANL lines and ground. Use Value: Maintains signal integrity by clamping common-mode surges without adding capacitance (>30 pF typical) that would distort bit timing. |
| Industrial PLC I/O Module Protection | LED Driver Input Stage Protection |
Use Scenario: 24V DC input terminals of programmable logic controllers facing inductive kickback from solenoid actuation. IC Role / Device Role / Timing Role: Front-end TVS on power entry, coordinated with fuse and common-mode choke. Use Value: Absorbs 86A peak current (IPPM) without degradation, enabling single-device protection for Class I/II industrial surge immunity (IEC 61000-4-5). | Use Scenario: Constant-current LED driver input connected to outdoor signage power supplies subject to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense against differential-mode transients entering via AC/DC adapter output. Use Value: Clamps 10/1000 µs surges to 18.2V while maintaining <1 µA leakage - avoids standby power loss and false dimming triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA (Bourns) | Same DO-214AA (SMB) package; lower PPK = 600W; VC = 19.9V @ 30A. | Lower surge capacity suits consumer-grade 12V systems but not full ISO 7637-2 Pulse 5a load dump. | Select SMBJ11CA only when board space is constrained and peak surge energy is ≤600W. |
| 1.5KE11CA (ON Semiconductor) | Through-hole DO-201 package; PPK = 1500W; VC = 19.0V @ 79A; slower response (~1ns). | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated production. | Choose 1.5KE11CA only for legacy through-hole designs or prototyping where rework tolerance is prioritized over miniaturization. |
Compared with SMBJ11CA and 1.5KE11CA, the SMCJ11CA delivers identical 1500W surge rating in a smaller surface-mount footprint than through-hole alternatives and higher clamping efficiency than SMB-class devices - making it optimal for automotive-grade SMT power rail protection where layout density and transient fidelity are critical.
Availability
SMCJ11CA is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED lighting systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMCJ11CA 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 manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO/TS 16949 certification for automotive-grade production.
The SMCJ series was developed specifically for high-reliability transient suppression in automotive power distribution networks and industrial control systems - emphasizing ISO 7637-2 compliance, low clamping ratio, and robust thermal performance in compact SMT packages.
FAQ
What is the clamping voltage of the SMCJ11CA and how is it measured?
The SMCJ11CA has a maximum clamping voltage (VC) of 18.2 V at 86 A peak pulse current (IPPM), tested per 10/1000 µs waveform defined in REA standards. This value is measured across the device terminals during standardized surge application and represents the upper voltage limit imposed on protected circuitry - critical for ensuring downstream ICs remain within absolute maximum ratings during transients.
Is the SMCJ11CA unidirectional or bidirectional, and how does that affect PCB layout?
The SMCJ11CA is a bidirectional TVS diode, indicated by the "CA" suffix and confirmed by symmetrical electrical characteristics in both polarities. Unlike unidirectional variants, it requires no orientation during placement - either terminal may connect to the protected line or ground, simplifying layout and eliminating risk of reverse installation in high-volume SMT assembly.
Does the SMCJ11CA meet automotive EMC standards such as ISO 7637-2?
Yes, the SMCJ11CA is explicitly rated to meet ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b per Taiwan Semiconductor's datasheet (Version S2104). Its 1500W peak power rating, fast response time (<1.0 ps), and low clamping voltage enable compliance with OEM-level surge immunity requirements for 12V vehicle networks.
What is the thermal resistance and maximum junction temperature of the SMCJ11CA?
The SMCJ11CA has a junction-to-case thermal resistance (RθJC) of 10°C/W and a maximum junction temperature (TJ MAX) of +150°C. These values allow sustained operation in under-hood automotive environments when mounted on adequately sized copper pours - derating applies above 25°C ambient per the datasheet's pulse derating curve (Fig.2).
How does the SMCJ11CA compare to the SMCJ11A in terms of breakdown voltage and application suitability?
The SMCJ11CA has a VBR range of 12.2–13.5 V, while the unidirectional SMCJ11A shares the same VBR range but conducts only in reverse bias. The CA version is preferred for differential-line protection (e.g., CAN bus) where polarity is undefined, whereas the A version suits single-rail clamping with known ground reference - selection depends on circuit topology, not performance difference.
SMCJ11CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ11CA FAQ
1.How can I place an order for SMCJ11CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CA 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 SMCJ11CA reliable?
The price and inventory of SMCJ11CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11CA is usually 5 days.
3.What payment methods are accepted for SMCJ11CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CA?
SMCJ11CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CA 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 SMCJ11CA?
For technical support, including SMCJ11CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CA requirements.
6.How does Aetrix verify that SMCJ11CA is sourced from the original manufacturer or authorized distributors?
All SMCJ11CA 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 SMCJ11CA meets industry standards.
7.What is the process for return or replacement of SMCJ11CA?
All SMCJ11CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CA, 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 SMCJ11CA part is unused and in its original packaging.
Return procedure for SMCJ11CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CA Tags
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