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SI4431BDY from SILICONIY

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SI4431BDY

Manufacturer: SILICONIY, VISHAY

P-Channel 30-V (D-S) MOSFET
Partnumber Manufacturer Quantity Availability
SI4431BDY SILICONIY, VISHAY 2343 In Stock

Description and Introduction

P-Channel 30-V (D-S) MOSFET The part **SI4431BDY** is manufactured by **SILICONIY**.  

### **Specifications:**  
- **Type:** RF Transceiver IC  
- **Frequency Range:** 240–930 MHz  
- **Modulation:** FSK, GFSK, OOK  
- **Data Rate:** Up to 128 kbps  
- **Supply Voltage:** 1.8–3.6 V  
- **Current Consumption:**  
  - Rx: 18.5 mA  
  - Tx (10 dBm output): 28 mA  
- **Sensitivity:** -121 dBm (at 1.2 kbps)  
- **Output Power:** Up to +20 dBm  
- **Interface:** SPI  
- **Package:** 20-pin QFN  

### **Descriptions:**  
The SI4431BDY is a low-power, high-performance RF transceiver designed for wireless communication applications. It supports a wide frequency range and multiple modulation schemes, making it suitable for ISM band applications.  

### **Features:**  
- **Wide Frequency Range:** Operates from 240 MHz to 930 MHz.  
- **Low Power Consumption:** Optimized for battery-powered devices.  
- **High Output Power:** Up to +20 dBm for extended range.  
- **Integrated Features:** Includes RSSI, automatic frequency control (AFC), and packet handling.  
- **Compact Package:** 20-pin QFN for space-constrained designs.  

For detailed application notes and schematics, refer to the official datasheet from **SILICONIY**.

Application Scenarios & Design Considerations

P-Channel 30-V (D-S) MOSFET

Alternative Part Number

  • AO3401A --: P-channel MOSFET in SOT-23 with comparable voltage and current ratings, widely available and cost effective.
  • DMG2301L --: P-channel MOSFET with similar RDS(on) and voltage rating, suitable drop-in for low-voltage switching applications.
  • FDS4435BZ --: P-channel MOSFET in SO-8 with comparable current handling and low on-resistance, good alternative for power switching.
  • DMP3098L --: P-channel enhancement-mode MOSFET in SO-8 with similar RDS(on) and voltage rating, suitable drop-in replacement for load-switch and power-management circuits.

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