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Taiwan Semiconductor Corporation SMCJ110H
- Part No.:
- SMCJ110H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110H.pdf
- Description:
- 1500W, 135.5V, 10%, UNIDIRECTION
- Quantity:
- Payment:
- Shipping:
Inventory:8,338
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Product details
Overview
SMCJ110H from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) 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 pulse current. It delivers AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and ESD protection in power supply rails.
For engineers reviewing the SMCJ110H datasheet, SMCJ110H pinout, SMCJ110H application, or SMCJ110H equivalent, this device is selected for high-energy transient suppression in 12V/24V/48V automotive and industrial DC systems where fast response (<1.0 ps), low leakage (<1 µA @ 110V), and robust 150°C junction operation are required.
Technical Context
The SMCJ110H uses a glass-passivated silicon junction to achieve stable breakdown behavior and low capacitance under transient stress. Its unidirectional configuration enables asymmetric clamping-forward conduction limited to 3.5V @ 100A-while reverse clamping remains active only above VBR.
Thermal performance is defined by RθJA = 55°C/W and RθJC = 10°C/W, supporting continuous power dissipation up to 5W at 25°C ambient. The device operates across –55°C to +150°C junction temperature range and complies with JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping initiates; sets safe margin below system rail voltage. |
| VBR min/max | 122 V / 149 V @ 1 mA - Confirmed breakdown threshold range ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 196 V @ 8 A - Clamping voltage under 10/1000 µs surge defines worst-case overvoltage seen by protected downstream circuitry. |
| PPK | 1500 W - Peak pulse power rating determines survivability against standardized ISO 7637-2 pulses (e.g., Load Dump). |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves efficiency and prevents unintended biasing in high-impedance sensing paths. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and thermally constrained industrial enclosures. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 2.54 mm lead pitch, compatible with automated placement and reflow. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, 0.210 g weight, UL 94V-0 rated compound, and J-STD-002 solderability compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to system ground or low-side return; conducts <3.5 V @ 100 A during forward surge events. |
| Cathode | Reverse-biased clamping node | Connects to protected line (e.g., 24V rail); blocks 110 V DC but clamps transients >122 V to ≤196 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| ISO 7637-2 compliance | Guarantees immunity to real-world vehicle electrical disturbances: Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump), Pulse 3a/3b (capacitive coupling). |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift vs. epoxy-passivated alternatives. |
| Fast response time | <1.0 ps rise-to-VBR - Limits voltage overshoot during nanosecond-scale ESD events (IEC 61000-4-2) before protection engages. |
| Level 1 MSL | Zero bake requirement prior to reflow; supports standard SMT assembly without moisture-related popcorning risk. |
Applications
| Automotive Power Rail Protection | Industrial DC Input Stage |
|---|---|
Use Scenario: 24V battery-fed ECUs exposed to load dump transients up to 120V for 400 ms per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontroller power inputs. Use Value: Limits peak rail voltage to 196V, preventing damage to 36V-rated input stages while surviving ≥1500W surge energy. |
Use Scenario: 48V telecom rectifier output subjected to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: First-line transient suppressor on secondary-side DC bus before distribution to PoE injectors and signal processors. Use Value: Clamps 10/1000 µs surges to ≤196V within 1 ps, preserving integrity of downstream 60V-rated MOSFETs and gate drivers. |
| Automotive Sensor Interface Protection | Industrial Motor Drive Control |
Use Scenario: LIN bus transceivers and analog sensor front-ends connected to vehicle chassis with shared ground loops. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMCJ110H used as unidirectional clamp on VCC line feeding sensors. Use Value: Blocks reverse transients while maintaining <1 µA leakage at 110V, avoiding signal offset errors in precision 12-bit ADC references. |
Use Scenario: Gate driver supply rail in 3-phase inverter modules subject to IGBT switching noise and back-EMF spikes. IC Role / Device Role / Timing Role: Local clamping on isolated 15V gate supply, placed adjacent to driver IC to minimize loop inductance. Use Value: Limits voltage excursions to 196V during 100 ns edge-induced ringing, preventing false turn-on of high-side IGBTs. |
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), same VWM/VBR/VC, SMB package (smaller footprint, higher RθJA = 85°C/W) | Suitable for lower-energy transients (e.g., IEC 61000-4-5 Level 3); not recommended for ISO 7637-2 Pulse 5a load dump. | Select when board space is constrained and surge energy is ≤600W; verify thermal margin with RθJA derating. |
| 1.5KE110A | Through-hole TO-218 package, identical electrical specs, higher steady-state PD (5W same), but slower response (~1 ns) | Preferred for prototyping or legacy through-hole designs; unsuitable for high-density SMT automotive modules. | Choose for manual assembly or where reflow compatibility is not required; avoid in AEC-Q101–mandated production. |
Compared with SMBJ110A and 1.5KE110A, the SMCJ110H provides optimal balance of 1500W surge capacity, SMT manufacturability, AEC-Q101 compliance, and sub-nanosecond response-making it the preferred choice for production automotive and industrial power rail protection where both reliability and layout density matter.
Availability
SMCJ110H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial 48V DC power supplies, and motor drive gate driver protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SMCJ110H 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 automotive-qualified components since 1979.
The SMCJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust thermal performance in compact SMT packages.
FAQ
What is the clamping voltage of SMCJ110H under a standard 10/1000 µs surge?
The SMCJ110H 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 ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMCJ110H maintains this clamping performance across its full operating temperature range.
Is SMCJ110H unidirectional or bidirectional, and how is polarity marked?
The SMCJ110H is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. Polarity is marked by a cathode band on the DO-214AB (SMC) package body-this band must be oriented toward the positive side of the protected line. Forward voltage is 3.5 V at 100 A, confirming its unidirectional conduction path. The SMCJ110H does not conduct in reverse until breakdown occurs above 122 V.
Does SMCJ110H meet automotive qualification standards?
Yes, the SMCJ110H is AEC-Q101 qualified and tested for automotive-grade reliability, including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge. It also meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b-making it suitable for engine control modules, body electronics, and ADAS power domains where transient immunity is critical.
What is the maximum steady-state power dissipation for SMCJ110H?
The SMCJ110H has a steady-state power dissipation (PD) rating of 5 W at 25°C ambient temperature. This value decreases linearly above 25°C per the derating curve in Figure 2 of the datasheet, reaching zero at 150°C junction temperature. Designers must calculate board-level thermal resistance to ensure TJ remains ≤150°C under continuous DC bias conditions.
Can SMCJ110H be used in place of SMCJ110AH?
No-SMCJ110H and SMCJ110AH are distinct variants. The SMCJ110AH has tighter VBR tolerance (122–135 V vs. 122–149 V) and lower clamping voltage (177 V vs. 196 V). While both share VWM = 110 V and PPK = 1500 W, substituting SMCJ110H for SMCJ110AH may result in higher clamped voltage during surges and less precise breakdown onset. Always verify design margins before interchange.
SMCJ110H 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:
- 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)
SMCJ110H FAQ
1.How can I place an order for SMCJ110H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110H 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 SMCJ110H reliable?
The price and inventory of SMCJ110H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110H is usually 5 days.
3.What payment methods are accepted for SMCJ110H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110H?
SMCJ110H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110H 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 SMCJ110H?
For technical support, including SMCJ110H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110H requirements.
6.How does Aetrix verify that SMCJ110H is sourced from the original manufacturer or authorized distributors?
All SMCJ110H 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 SMCJ110H meets industry standards.
7.What is the process for return or replacement of SMCJ110H?
All SMCJ110H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110H, 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 SMCJ110H part is unused and in its original packaging.
Return procedure for SMCJ110H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110H Tags
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