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Taiwan Semiconductor Corporation SMCJ110CA
- Part No.:
- SMCJ110CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110CA.pdf
- Description:
- TVS DIODE 110VWM 177VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,302
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Product details
Overview
SMCJ110CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 110V working stand-off voltage (VWM), 122–135V breakdown voltage (VBR), and 177V maximum clamping voltage (VC) at 8.9A peak impulse current - designed for automotive load-dump and ISO 7637-2 Pulse 1/2a/2b/3a/3b protection in power electronics.
For engineers reviewing the SMCJ110CA datasheet, SMCJ110CA pinout, SMCJ110CA application, or SMCJ110CA equivalent, this device delivers verified bidirectional surge suppression with sub-1ps response time, <1µA leakage above 10V, and UL 94V-0 molding compound - critical for ESD-hardened industrial control, automotive body electronics, and DC power rail protection where fast clamping and polarity-agnostic transients are present.
Technical Context
The SMCJ110CA is a bipolar (bidirectional) TVS diode built using glass-passivated junction technology, enabling symmetrical clamping in both forward and reverse directions without external polarity constraints. Its 1500W peak pulse power rating (10/1000µs waveform) and 177V clamping voltage at 8.9A ensure robust protection against high-energy transients while maintaining low let-through voltage to downstream circuitry.
Thermally, it features a junction-to-ambient thermal resistance of 55°C/W and operates across –55°C to +150°C, supporting under-hood automotive environments. It meets JESD201 Class 2 whisker resistance and moisture sensitivity level 1 per J-STD-020 - confirming suitability for lead-free reflow assembly without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC steady-state rail margin. |
| VBR @ IT=1mA | 122–135 V - Breakdown voltage range at 1mA test current; ensures reliable turn-on within specified tolerance band. |
| VC @ IPPM=8.9A | 177 V - Clamped voltage during 10/1000µs surge; determines maximum stress imposed on protected ICs. |
| PPK | 1500 W - Peak pulse power handling (1ms pulse); enables survival of high-energy automotive load dump events. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in engine bay or enclosed industrial enclosures. |
| Response time | <1.0 ps - Time from 0V to VBR,min; guarantees near-instantaneous clamping before sensitive logic is damaged. |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case with matte tin-plated leads, UL 94V-0 flammability rating, and cathode band marking for unidirectional variants only - not applicable to SMCJ110CA due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity dependency - either terminal serves as input/output for transient energy absorption in both directions. |
| Case (exposed metal pad) | Thermal conduction path | Not electrically connected; provides mechanical mounting and heat dissipation to PCB copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - essential for automotive ECUs. |
| Glass-passivated junction | Improves long-term reliability and stability of VBR under thermal cycling and humidity exposure. |
| Moisture sensitivity level 1 | Eliminates need for baking prior to reflow soldering - reduces manufacturing cost and process complexity. |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS and environmental compliance in global supply chains. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from battery line transients during load dump or jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between 12V supply and local LDO/regulator input. Use Value: Limits let-through voltage to ≤177V during 1500W surges, preventing latch-up or gate oxide rupture in downstream PMICs and MCU power domains. | Use Scenario: Safeguarding 24V digital input channels against field-wiring induced EFT bursts and inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Front-end transient absorber ahead of optocoupler or Schmitt-trigger input stage. Use Value: Sub-1ps response ensures clamping occurs before EFT edge (5ns rise time) propagates into isolation barrier, preserving signal integrity and system uptime. |
| LED Streetlight Power Supply | Telecom Remote Radio Unit (RRU) DC Feeder |
Use Scenario: Suppressing lightning-induced surges on outdoor-rated 120–277V AC/DC converter input stages exposed to utility grid transients. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV-based primary protection, absorbing residual high-frequency energy. Use Value: 177V clamping voltage allows use with 110V-rated bulk capacitors and bridge rectifiers, avoiding overvoltage derating penalties. | Use Scenario: Protecting 48V DC power feeders connecting baseband units to remote antennas against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional clamp on DC feeder pair, symmetrically referenced to ground. Use Value: Symmetrical VC = 177V in both polarities ensures equal protection regardless of surge polarity - critical for ungrounded telecom feeds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CA (Bourns) | Same VWM/VC specs but lower PPK = 600W; DO-214AA (SMB) package with smaller footprint and thermal mass. | Lower surge energy handling limits use to non-load-dump scenarios (e.g., ESD-only or low-energy EFT). | Select SMBJ110CA only when board space is constrained and peak transient energy remains below 600W. |
| 1.5KE110CA (ON Semiconductor) | Through-hole TO-218 package; identical VWM, VBR, VC, and PPK, but higher RθJA = 10°C/W and no SMT compatibility. | Requires wave soldering or hand assembly; unsuitable for fully automated SMT lines or compact PCBs. | Choose 1.5KE110CA only for legacy through-hole designs or prototyping where thermal derating is acceptable. |
Compared with SMBJ110CA and 1.5KE110CA, the SMCJ110CA uniquely balances 1500W surge capacity, SMT manufacturability, and automotive-grade thermal performance in a DO-214AB package - making it optimal for production-grade automotive and industrial power rail protection where both energy handling and assembly scalability matter.
Availability
SMCJ110CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, LED driver power supplies, and telecom remote radio units requiring stable component supply across extended temperature ranges and high-reliability surge environments.
Supply support for SMCJ110CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices since 1979.
The SMCJ series belongs to TSC's high-power surface-mount TVS portfolio, engineered specifically for ISO 7637-2-compliant automotive and industrial transient immunity - emphasizing fast response, repeatable clamping, and robust thermal design for harsh-environment deployment.
FAQ
What is the clamping voltage of the SMCJ110CA under a 10/1000µs surge?
The SMCJ110CA has a maximum clamping voltage (VC) of 177 V when subjected to an 8.9 A peak impulse current with a 10/1000µs waveform. This value is measured per JEDEC standards and reflects the upper limit of voltage let-through during worst-case surge conditions - directly protecting downstream components such as LDOs, microcontrollers, and CAN transceivers from overvoltage damage.
Is the SMCJ110CA unidirectional or bidirectional?
The SMCJ110CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's naming convention. It provides symmetrical clamping in both polarities, eliminating the need for polarity-aware placement on PCBs and enabling protection of AC-coupled signals, floating buses, or differential power feeds without orientation constraints - unlike unidirectional variants such as SMCJ110A.
Does the SMCJ110CA meet automotive transient immunity standards?
Yes, the SMCJ110CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (supply line switching), and Pulse 3a/3b (capacitive coupling), as explicitly stated in Taiwan Semiconductor's datasheet. Its 1500W peak power rating and sub-1ps response time make it suitable for front-end protection in automotive ECUs, body control modules, and infotainment power supplies exposed to real-world vehicle electrical noise.
What is the maximum operating temperature for the SMCJ110CA?
The SMCJ110CA has a maximum junction temperature (TJ) of +150°C and a storage temperature range of –55°C to +150°C. Its thermal resistance values - RθJA = 55°C/W and RθJC = 10°C/W - enable reliable operation in under-hood automotive environments and sealed industrial enclosures, provided adequate PCB copper area is used for heatsinking per the recommended pad layout.
How does the SMCJ110CA differ from the SMCJ110A?
The SMCJ110CA is bidirectional, while the SMCJ110A is unidirectional. Their key electrical differences include identical VWM (110 V) and VBR (122–135 V), but distinct clamping behavior: SMCJ110CA clamps symmetrically in both directions (VC = 177 V), whereas SMCJ110A clamps only in reverse (forward conduction follows diode VF ≈ 3.5–5.0 V). The "CA" variant is preferred for AC or polarity-agnostic protection; "A" suits DC rails with defined ground reference.
SMCJ110CA 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- 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)
SMCJ110CA FAQ
1.How can I place an order for SMCJ110CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110CA 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 SMCJ110CA reliable?
The price and inventory of SMCJ110CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110CA is usually 5 days.
3.What payment methods are accepted for SMCJ110CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110CA?
SMCJ110CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110CA 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 SMCJ110CA?
For technical support, including SMCJ110CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110CA requirements.
6.How does Aetrix verify that SMCJ110CA is sourced from the original manufacturer or authorized distributors?
All SMCJ110CA 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 SMCJ110CA meets industry standards.
7.What is the process for return or replacement of SMCJ110CA?
All SMCJ110CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110CA, 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 SMCJ110CA part is unused and in its original packaging.
Return procedure for SMCJ110CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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