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Taiwan Semiconductor Corporation SMBJ110CA
- Part No.:
- SMBJ110CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110CA.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,998
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Product details
Overview
SMBJ110CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in power rails and signal lines. It features a 110V working stand-off voltage (VWM), 122–149V breakdown voltage (VBR), 196V maximum clamping voltage (VC) at 3.2A peak impulse current, and 600W peak pulse power rating per 10/1000µs waveform - deployed in automotive lighting control modules to protect CAN transceiver inputs from load-dump-induced transients.
For engineers reviewing the SMBJ110CA datasheet, SMBJ110CA pinout, SMBJ110CA application, or SMBJ110CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AA package compatibility with automated SMT assembly, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and leakage current ≤1µA at 110V - all critical for robustness in 12V/24V vehicle subsystems.
Technical Context
The SMBJ110CA operates as a silicon avalanche diode with glass-passivated junction, enabling sub-1ps response time and stable clamping under repetitive surge stress. Its bidirectional configuration ensures symmetrical protection without polarity dependency, supporting both positive and negative transient suppression on the same line.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, allowing reliable operation up to TJ = 150°C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity - confirming suitability for reflow-soldered industrial and automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 122 / 149 V @ 1 mA - Ensures predictable avalanche onset across manufacturing lot variation |
| VC @ IPP | 196 V @ 3.2 A - Limits downstream IC voltage exposure during 10/1000µs surge events |
| PPK | 600 W - Withstands automotive load-dump surges per ISO 7637-2 without degradation |
| ID @ VWM | ≤1 µA - Minimizes standby power loss in always-on vehicle modules |
| Package | DO-214AA (SMB) - Standardized footprint compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; dual-terminal construction optimized for automated pick-and-place and reflow soldering. Matte tin-plated leads meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band Side) | Reference terminal for bidirectional clamping | Marked end defines polarity reference; symmetric conduction in both directions |
| Cathode (Opposite Cathode Band) | Reference terminal for bidirectional clamping | Electrically identical to anode in CA configuration; no functional distinction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| Sub-1 ps response time | Clamps ESD events before sensitive logic or analog circuitry sustains damage |
| ISO 7637-2 compliance | Validated for automotive electrical system immunity testing (Pulse 1/2a/2b/3a/3b) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for green electronics manufacturing |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp control units exposed to battery reverse-connection and alternator load-dump transients. IC Role / Device Role: Bidirectional TVS placed across VCC–GND rail to clamp ±150V surges within 196V limit. Use Value: Prevents latch-up or gate oxide rupture in 3.3V/5V logic while maintaining <1µA leakage at nominal 12V supply. | Use Scenario: Safeguarding 24V digital input channels of programmable logic controllers against field-wiring induced surges and EFT bursts. IC Role / Device Role: Parallel-connected TVS on each isolated input channel to shunt >1kV fast transients per IEC 61000-4-4. Use Value: Enables uninterrupted operation during factory floor EFT events without requiring system reset or firmware recovery. |
| USB-C Power Delivery Interface | Smart Meter Communication Port |
Use Scenario: Protecting CC and VBUS lines in USB-C PD sink controllers from hot-plug ESD and cable discharge events. IC Role / Device Role: Bidirectional clamping element on differential and power lines to meet IEC 61000-4-2 Level 4 (±15kV air). Use Value: Maintains signal integrity on high-speed CC lines while limiting VCC rail overshoot to <200V during 8kV contact discharge. | Use Scenario: Shielding RS-485 transceivers in utility smart meters from lightning-induced surges on outdoor communication lines. IC Role / Device Role: Primary front-end TVS on twisted-pair bus lines, coordinated with GDT secondary protection. Use Value: Survives repeated 6kV/3kA surges per IEC 61000-4-5 while preserving data link stability over 20-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110CA | Identical VWM (110V), VC = 196V @ 3.2A, same DO-214AA package | Same ISO 7637-2 compliance; minor VBR tolerance variance (122–149V vs. 122–150V) | Drop-in replacement with validated automotive qualification history |
| ON Semiconductor SMCJ110CA | Higher PPK (1500W), larger DO-214AB (SMC) package, VC = 196V @ 3.2A | Requires PCB layout change; suited for higher-energy surge environments (e.g., engine control) | Select when system-level surge test margin exceeds 600W requirement |
Compared with SMBJ110CA, SMAJ110CA offers identical electrical specs and drop-in compatibility, while SMCJ110CA provides higher surge capacity at the cost of larger footprint - making SMBJ110CA optimal for space-constrained 12V/24V modules where 600W clamping suffices.
Availability
SMBJ110CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and USB-C power delivery interface designs requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBJ110CA 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 products.
The SMBJ series was engineered specifically for surface-mount surge protection in automotive and industrial systems demanding high reliability, low leakage, and standardized DO-214AA packaging - targeting ISO 7637-2 compliance without design compromise.
FAQ
What is the maximum clamping voltage of SMBJ110CA under standard 10/1000µs surge conditions?
The SMBJ110CA has a maximum clamping voltage (VC) of 196 V when subjected to its rated peak impulse current of 3.2 A using the 10/1000µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains below destructive voltage thresholds during transient events. The SMBJ110CA maintains this clamping performance across its full operating temperature range of –55°C to +150°C.
Is SMBJ110CA unidirectional or bidirectional, and how is polarity identified?
SMBJ110CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's naming convention. It has no functional anode/cathode distinction - both terminals behave identically under positive or negative transients. Polarity marking (cathode band) is retained for mechanical orientation only and does not affect electrical symmetry. The SMBJ110CA delivers matched clamping in both directions, essential for AC-coupled or floating signal line protection.
Does SMBJ110CA meet automotive surge immunity standards?
Yes, SMBJ110CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery feed interruption), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's official documentation. Its 600W peak pulse power rating, 196V clamping, and sub-1ps response time enable robust protection in 12V and 24V vehicle networks. The SMBJ110CA is widely deployed in automotive body control modules and lighting ECUs.
What is the leakage current specification for SMBJ110CA at its working voltage?
At its rated working stand-off voltage of 110 V, the SMBJ110CA exhibits a maximum blocking leakage current (ID) of 1 µA at 25°C - verified per the manufacturer's electrical specifications table. This ultra-low leakage minimizes power loss in always-on systems such as automotive telematics or smart meter backup circuits. The SMBJ110CA maintains ID ≤1 µA across its full operating temperature range, ensuring consistent performance in harsh environments.
Can SMBJ110CA be used in place of SMBJ110A in a design?
No - SMBJ110CA and SMBJ110A are functionally distinct: SMBJ110CA is bidirectional, while SMBJ110A is unidirectional. Substituting SMBJ110CA for SMBJ110A would eliminate polarity-dependent forward conduction and alter clamping behavior on DC-biased lines. The SMBJ110CA must only replace other "CA"-suffixed variants. Always verify schematic symbol polarity and layout orientation before integration, as the SMBJ110CA's bidirectional nature changes system-level protection strategy.
SMBJ110CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- 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):
- 3.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ110CA FAQ
1.How can I place an order for SMBJ110CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110CA 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 SMBJ110CA reliable?
The price and inventory of SMBJ110CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110CA is usually 5 days.
3.What payment methods are accepted for SMBJ110CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110CA?
SMBJ110CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110CA 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 SMBJ110CA?
For technical support, including SMBJ110CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110CA requirements.
6.How does Aetrix verify that SMBJ110CA is sourced from the original manufacturer or authorized distributors?
All SMBJ110CA 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 SMBJ110CA meets industry standards.
7.What is the process for return or replacement of SMBJ110CA?
All SMBJ110CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110CA, 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 SMBJ110CA part is unused and in its original packaging.
Return procedure for SMBJ110CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110CA Tags
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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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