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Taiwan Semiconductor Corporation SMCJ110CH
- Part No.:
- SMCJ110CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110CH.pdf
- Description:
- 1500W, 135.5V, 10%, BIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:6,546
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Product details
Overview
SMCJ110CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in automotive and industrial power rails. It features a 110V working stand-off voltage (VWM), 122–149V breakdown voltage (VBR), 196V maximum clamping voltage (VC) at 8A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ110CH datasheet, SMCJ110CH pinout, SMCJ110CH application, or SMCJ110CH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature limits up to +150°C, moisture sensitivity level 1 compliance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
The SMCJ110CH employs 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 110V). Its thermal design supports 10°C/W junction-to-case resistance and 55°C/W junction-to-ambient resistance, enabling sustained operation in ambient temperatures from –55°C to +150°C.
As a unidirectional TVS, it conducts only during reverse-biased overvoltage events, with forward voltage of 3.5 V at 100 A - consistent with SMCJ100H–SMCJ170H series per datasheet Note 2. It meets ISO 7637-2 for automotive load-dump and switching transients but is not rated for bidirectional use (CH suffix denotes unidirectional; CAH denotes bidirectional).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 122 V / 149 V @ 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 196 V @ 8 A - Clamping voltage limiting downstream circuit stress during 10/1000 µs surge |
| PPK | 1500 W - Peak pulse power handling capability per single 1 ms transient per Fig.5 |
| IR @ VWM | <1 µA - Negligible leakage current preserving system standby power integrity |
| TJ max | +150 °C - Maximum junction temperature supporting under-hood and industrial enclosure use |
| Package | DO-214AB (SMC) - Standard surface-mount outline with 0.210 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD 201 Class 2 whisker resistance. Weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail); marked by band; conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TC, and UHAST |
| Glass passivated junction | Enhanced long-term stability and humidity resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Robust immunity to real-world automotive transients: Pulse 1 (inductive load dump), Pulse 2a/2b (switching), Pulse 3a/3b (capacitive coupling) |
| Fast response time | <1.0 ps from 0 V to VBR min - ensures clamping activation before sensitive ICs experience overstress |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow - simplifies SMT manufacturing flow |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 110 V. Use Value: Limits peak rail voltage to ≤196 V during 1500 W transients, preventing damage to MCU, CAN transceivers, and power regulators. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection on 24 V DC sensor inputs exposed to inductive switching noise and ESD. Use Value: Maintains signal integrity by suppressing >1 kV transients while adding <1 µA leakage - no impact on input threshold accuracy. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary bias rails in outdoor telecom equipment. IC Role / Device Role / Timing Role: Secondary-level surge suppression after primary GDT or MOV stages on 3.3 V/5 V/12 V supply lines. Use Value: Provides precise 110 V clamping with sub-nanosecond response - critical for protecting low-voltage PHY ICs from coupled lightning surges. | Use Scenario: Suppressing commutation spikes on BLDC motor driver power supplies in smart home appliances. IC Role / Device Role / Timing Role: Mounted across DC bus capacitors to absorb inductive kickback from MOSFET switching. Use Value: Dissipates 1500 W pulses without degradation, extending capacitor and gate driver lifetime in high-cycle motor control applications. |
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 | 600 W PPK rating, SMB package (smaller footprint), 200 V VC @ 3.2 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or sustained load dump | Select SMCJ110CH when full 1500 W surge capacity and AEC-Q101 compliance are required. |
| 1.5KE110A | Through-hole DO-201 package, 1500 W PPK, 196 V VC, but no AEC-Q101 or ISO 7637-2 validation | Not qualified for automotive use; lacks moisture sensitivity level 1 and automated placement optimization | Choose SMCJ110CH for SMT production, automotive qualification, and RoHS/halogen-free compliance. |
Compared with SMBJ110A and 1.5KE110A, the SMCJ110CH delivers identical clamping voltage (196 V) but in a surface-mount AEC-Q101-qualified package with verified ISO 7637-2 immunity - making it the only option suitable for automotive front-end power protection without layout or qualification compromise.
Availability
SMCJ110CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom power rail hardening requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMCJ110CH 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, serving global automotive, industrial, and consumer markets since 1979.
The SMCJ series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in harsh automotive environments - emphasizing low clamping ratio, fast response, and process-controlled reliability.
FAQ
What is the clamping voltage of the SMCJ110CH under standard 10/1000 µs surge conditions?
The SMCJ110CH has a maximum clamping voltage (VC) of 196 V when subjected to an 8 A peak pulse current with a 10/1000 µs waveform. This value is measured per Fig.5 in the datasheet and defines the upper voltage limit imposed on protected circuits during standardized surge events - critical for ensuring downstream components remain within absolute maximum ratings.
Is the SMCJ110CH suitable for bidirectional transient protection?
No, the SMCJ110CH is a unidirectional TVS diode, indicated by the "H" suffix and absence of "A" in the part number (bidirectional variants use "CAH"). It conducts only during reverse-biased overvoltage events. For bidirectional protection at 110 V standoff, the SMCJ110CAH - with symmetric clamping in both polarities - must be selected instead.
Does the SMCJ110CH meet automotive qualification standards?
Yes, the SMCJ110CH is AEC-Q101 qualified and explicitly validated for ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity. Its construction - including glass passivation, level 1 moisture sensitivity, and JESD 201 Class 2 whisker resistance - satisfies automotive production requirements for under-hood and body-control module applications.
What is the forward voltage drop of the SMCJ110CH at high current?
The SMCJ110CH exhibits a forward voltage (VF) of 3.5 V at 100 A, consistent with all SMCJ100H–SMCJ170H unidirectional devices per datasheet Note 2. This parameter matters during fault conditions where the device may conduct forward current, influencing thermal dissipation and system-level fuse coordination.
How does the SMCJ110CH compare to the SMCJ110AH variant?
The SMCJ110AH offers tighter breakdown voltage tolerance (122–135 V vs. 122–149 V for SMCJ110CH), resulting in lower clamping voltage (177 V vs. 196 V) at the same 8 A test current. Both share identical package, power rating, and qualification - but SMCJ110AH provides improved precision for designs demanding stricter overvoltage thresholds.
SMCJ110CH 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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ110CH FAQ
1.How can I place an order for SMCJ110CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110CH 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 SMCJ110CH reliable?
The price and inventory of SMCJ110CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110CH is usually 5 days.
3.What payment methods are accepted for SMCJ110CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110CH?
SMCJ110CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110CH 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 SMCJ110CH?
For technical support, including SMCJ110CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110CH requirements.
6.How does Aetrix verify that SMCJ110CH is sourced from the original manufacturer or authorized distributors?
All SMCJ110CH 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 SMCJ110CH meets industry standards.
7.What is the process for return or replacement of SMCJ110CH?
All SMCJ110CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110CH, 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 SMCJ110CH part is unused and in its original packaging.
Return procedure for SMCJ110CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110CH Tags
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