My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ110
- Part No.:
- SMCJ110
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110.pdf
- Description:
- 1500W, 135.5V, 10%, UNIDIRECTION
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ110 from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 110V working stand-off voltage (VWM), 122–149V breakdown voltage (VBR), and 196V maximum clamping voltage (VC) at 8A peak impulse current. It protects automotive power rails and industrial I/O interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ110 datasheet, SMCJ110 pinout, SMCJ110 application, or SMCJ110 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, junction temperature derating above 25°C, unidirectional polarity marking, and compliance with automotive EFT immunity standards.
Technical Context
The SMCJ110 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 122–149V breakdown range at 1mA test current. Its glass-passivated junction enables sub-1ps response time and <1μA leakage above 10V, supporting fast transient suppression in 12V/24V vehicle subsystems.
Thermally, it features 10°C/W junction-to-case resistance and 55°C/W junction-to-ambient resistance, allowing 5W steady-state dissipation at 25°C ambient. Derating follows Fig.2 per JEDEC JESD51-1, limiting usable power to ~2.5W at 75°C board temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit DC rail. |
| VBR min/max | 122V / 149V @ 1mA - Breakdown threshold range; defines minimum overvoltage level that initiates conduction. |
| VC @ IPPM | 196V @ 8A - Clamped voltage during 10/1000μs surge; determines worst-case stress on downstream components. |
| PPK | 1500W - Peak pulse power rating for non-repetitive 1ms waveform; validates robustness against ISO 7637-2 Pulse 5a surges. |
| IR @ VWM | <1μA - Reverse leakage at 110V; ensures negligible standby current in always-on automotive modules. |
| Package | DO-214AB (SMC) - Surface-mount outline with 7.11mm x 6.22mm footprint and 2.3mm height; compatible with automated reflow assembly. |
Pinout & Package
DO-214AB (SMC) package with cathode band marking on one end. Two-terminal device: anode and cathode. Cathode band denotes polarity for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; completes clamping loop during transient events. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., CAN_H, LIN, 12V rail); conducts avalanche current when VAK > 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 (EFT), enabling direct use in automotive ECUs without external filtering. |
| Glass passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of corrosion-induced parameter drift in under-hood environments. |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; supports standard SMT processes without dry-pack handling or floor-life constraints. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for export-compliant automotive and industrial manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied body control module exposed to load-dump transients up to 35V and coupled switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges before they reach LDOs and microcontrollers. Use Value: Limits peak voltage to 196V during 1500W pulses, preventing latch-up or gate oxide damage in 3.3V/5V logic ICs downstream. | Use Scenario: 4–20mA current-loop transmitter interfacing with PLC analog inputs in factory automation cabinets. IC Role / Device Role / Timing Role: TVS mounted across signal pair (IOUT+/IOUT−) to absorb EFT bursts induced by nearby motor drives. Use Value: Sub-1ps response ensures clamping activation before 100ns EFT edges propagate into precision DACs or op-amps. |
| LED Driver Overvoltage Suppression | RS-485 Transceiver Line Protection |
Use Scenario: Constant-current LED driver in commercial lighting fixture subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: TVS placed across primary-side DC bus (e.g., after bridge rectifier) to clamp high-energy transients before they stress MOSFETs or controllers. Use Value: 1500W PPK rating handles multi-millisecond surges common in outdoor lighting installations without thermal runaway. | Use Scenario: RS-485 transceiver in building management system exposed to ground potential differences and ESD events on long cable runs. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMCJ110 devices in series opposition across A/B lines, referenced to GND. Use Value: 196V clamping voltage preserves transceiver common-mode range while limiting differential stress to safe levels per TIA-485-A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A | Lower PPK (600W), smaller SMB package (DO-214AA), tighter VBR tolerance (122–135V vs. 122–149V). | Suitable for space-constrained consumer electronics; insufficient for ISO 7637-2 Pulse 5a in automotive. | Select SMCJ110 when 1500W surge handling and DO-214AB mechanical robustness are required. |
| 1.5KE110A | Through-hole TO-204AE (DO-41) package, same 110V VWM and 196V VC, but higher IR (5μA) and no ISO 7637-2 validation. | Used in legacy industrial power supplies where manual assembly is acceptable and automotive compliance is not needed. | Choose SMCJ110 for SMT production, automotive qualification, and lower leakage in always-on systems. |
Compared with SMBJ110A and 1.5KE110A, the SMCJ110 delivers higher surge power handling in a surface-mount form factor with verified automotive transient immunity, making it optimal for modern automotive and industrial PCB designs requiring both reliability and manufacturability.
Availability
SMCJ110 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor transmitters, LED driver power stages, and RS-485 communication interfaces requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SMCJ110 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 developed specifically for high-energy transient suppression in automotive power distribution systems and industrial I/O protection, emphasizing ISO 7637-2 compliance, low leakage, and SMT manufacturability.
FAQ
What is the maximum clamping voltage of the SMCJ110 under standard test conditions?
The SMCJ110 has a maximum clamping voltage (VC) of 196V when subjected to an 8A peak impulse current (IPPM) with a 10/1000μs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ110 maintains this clamping performance consistently due to its glass-passivated junction and controlled avalanche characteristics.
Is the SMCJ110 suitable for bidirectional transient protection?
No, the SMCJ110 is a unidirectional TVS diode intended for DC line protection with defined polarity. For bidirectional applications such as AC signal lines or differential buses, the SMCJ110A variant or dedicated bidirectional parts like SMCJ110CA must be used. The SMCJ110's cathode band marking indicates its single-direction conduction path and must be oriented correctly in-circuit to avoid failure during reverse surges.
Does the SMCJ110 meet automotive transient immunity standards?
Yes, the SMCJ110 meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (electrical fast transients). This validation is explicitly stated in Taiwan Semiconductor's documentation and confirms its suitability for engine control units, body electronics, and infotainment systems where robust EMC performance is mandatory.
What is the thermal resistance profile of the SMCJ110 and how does it affect layout design?
The SMCJ110 has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient resistance (RθJA) of 55°C/W. To maintain TJ ≤ 150°C under 1500W pulses, PCB copper area must be maximized beneath the cathode/anode pads, and adjacent heat-generating components should be spaced ≥5mm away. Layouts must follow the recommended pad dimensions in the DO-214AB outline drawing to ensure reliable solder joint thermal transfer.
How does the SMCJ110 compare to the SMCJ110A in terms of electrical performance?
The SMCJ110A offers tighter breakdown voltage tolerance (122–135V vs. 122–149V for SMCJ110) and slightly lower clamping voltage (177V vs. 196V at 8.9A), resulting in improved protection margin for sensitive 110V-rated circuits. Both share identical package, power rating, and ISO 7637-2 compliance. The SMCJ110A is preferred where precise clamping is critical; the SMCJ110 provides broader VBR coverage for cost-sensitive applications with looser voltage margins.
SMCJ110 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 196V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
SMCJ110 FAQ
1.How can I place an order for SMCJ110 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110 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 SMCJ110 reliable?
The price and inventory of SMCJ110 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110 is usually 5 days.
3.What payment methods are accepted for SMCJ110?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110?
SMCJ110 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110 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 SMCJ110?
For technical support, including SMCJ110 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110 requirements.
6.How does Aetrix verify that SMCJ110 is sourced from the original manufacturer or authorized distributors?
All SMCJ110 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 SMCJ110 meets industry standards.
7.What is the process for return or replacement of SMCJ110?
All SMCJ110 units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110, 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 SMCJ110 part is unused and in its original packaging.
Return procedure for SMCJ110:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
