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SI2122DS-T1-BE3-VB Product details
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VBsemi SI2122DS-T1-BE3-VB is a Single N-channel field-effect transistor using Trench technology, designed for medium-to-high voltage power conversion and high-reliability control scenarios. Its SOT23-3 small package balances thermal performance and layout flexibility, suitable for space-constrained high-density PCB designs. The device provides stable switching characteristics within a 100V drain-source voltage range, and its gate drive is compatible with common 3.3V/5V logic levels, facilitating system integration. The optimized combination of on-resistance and low threshold voltage makes it an ideal choice for high-efficiency, low-power applications.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 100V | 1.8V | 4.3A | 141(mΩ) | 100(mΩ) | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 100V | 1.8V | 4.3A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 100V | 1.8V | 4.3A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N |
Drain-Source Voltage (VDS): 100V
Gate-Source Voltage (VGS): ±20V
Threshold Voltage (Vth): 1.8V typical
On-Resistance (VGS=4.5V): 141mΩ typical
On-Resistance (VGS=10V): 100mΩ typical
Maximum Drain Current (ID): 4.3A
Package: SOT23-3
Technology: Trench
Gate-Source Voltage (VGS): ±20V
Threshold Voltage (Vth): 1.8V typical
On-Resistance (VGS=4.5V): 141mΩ typical
On-Resistance (VGS=10V): 100mΩ typical
Maximum Drain Current (ID): 4.3A
Package: SOT23-3
Technology: Trench
Domain and module applications：
1. High-Voltage DC-DC Converters: Used as switching tubes in Buck/Boost topologies, leveraging 100V voltage withstand and low on-resistance to reduce rectification losses, suitable for industrial and communication power supply designs.
2. Auxiliary Power Supplies and Bias Supplies: Applied in auxiliary voltage regulation circuits for servers, chargers, and home appliance control boards, providing stable and reliable power switching.
3. LED Lighting Drivers: Used in high-voltage light strips, floodlights, and constant current drive modules, supporting PWM dimming, suppressing current ripple and light flicker.
4. Battery Management Systems (BMS): Acts as a charge/discharge protection switch in 48V and above battery packs, working with management ICs for fast overcurrent/overvoltage shutdown, ensuring system safety.
5. Motor Drives and Actuator Control: Drives small brushless DC motors, fans, pumps, and industrial valves, supporting PWM speed control with low loss and high reliability.
6. Industrial Sensors and Smart Instruments: Used for power switching and signal conditioning circuits in PLCs, remote terminal units, adapting to harsh electrical environments.
7. Automotive Electronics Auxiliary Modules: Provides regulated power supply for multimedia, body control, and sensor loads in 12V/24V vehicle networks, meeting wide voltage transient requirements.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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