SI4431BDY-T1-E3

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SI4431BDY-T1-E3

MOSFET P-CH 30V 5.7A 8SO

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Specifications

Supplier Vishay Siliconix
Package Tape & Reel (TR),Cut Tape (CT)
Series TrenchFET®
ProductStatus Active
FETType P-Channel
Technology MOSFET (Metal Oxide)
DraintoSourceVoltage(Vdss) 30 V
Current-ContinuousDrain(Id)@25°C 5.7A (Ta)
DriveVoltage(MaxRdsOnMinRdsOn) 4.5V, 10V
RdsOn(Max)@IdVgs 30mOhm @ 7.5A, 10V
Vgs(th)(Max)@Id 3V @ 250µA
GateCharge(Qg)(Max)@Vgs 20 nC @ 5 V
Vgs(Max) ±20V
PowerDissipation(Max) 1.5W (Ta)
OperatingTemperature -55°C ~ 150°C (TJ)
MountingType Surface Mount
SupplierDevicePackage 8-SOIC

Overview

Description

SI4431BDY-T1-E3 is Silicon Labs’ RF transceiver IC (Si4431 family) in a compact BDY package (tape-and-reel). It’s a highly integrated, low-power transceiver intended for wireless links in ISM/sub-GHz bands, programmable via an SPI interface.
Key points:
- Integrated RF front end, PLL and data interface; supports a range of sub-GHz ISM frequencies through frequency synthesis.
- Control via SPI with several GPIOs; supports common modulation schemes (FSK/GFSK/ASK/OOK) and configurable data rates.
- Low-power operation suitable for battery-powered devices; requires external RF matching components, PA/LNA, antenna, and a crystal/resonator.
- Package: small QFN-style (BDY) with T1-E3 tape-and-reel packaging.
Typical applications: remote controls, sensor/WIoT nodes, home automation, wireless links.
For precise frequency ranges, data rates, TX power, and pinout, consult the official datasheet and reference designs.

Features

Here are core features of SI4431BDY-T1-E3 (Silicon Labs transceiver):
- Sub-1 GHz ISM transceiver for 315/433/868/915 MHz (region dependent)
- Modulations: FSK, GFSK, and OOK
- Integrated frequency synthesizer with PLL and VCO; supports quick channel changes
- SPI control interface with configurable registers
- TX power adjustable; typical up to +10 dBm
- RX sensitivity high (typical very low dBm range; robust performance)
- Data rates in the tens of kbps (FSK/GFSK/OOK)
- On-chip RSSI, AGC, filtering, and data shaping
- Packet handling features: preamble, sync word, CRC options
- Power management with multiple modes and wake-on-radio
- RoHS-compliant small package (likely QFN-type) and wide operating temp range
- Suitable for low-power, wireless remote, telemetry, and ISM-band applications
Note: exact specifications (bands, current consumption, and data rate) depend on revision and configuration; consult the datasheet for precise numbers.

Package

SO-8 (8-pin surface-mount) package, RoHS lead-free variant.

Manufacturer

- Manufacturer: Silicon Laboratories (Silicon Labs)
- What kind of company: A semiconductor company (fabless design house) that develops and markets ICs such as RF transceivers, microcontrollers, timing and sensor solutions, typically outsourcing manufacturing to foundries.

Application

Applications include:
- Wireless sensor networks and IoT devices in ISM bands
- Home/building automation and smart energy meters
- Industrial automation and remote monitoring
- Security and access-control systems
- Remote controls and wireless peripherals
- Telemetry and data logging
- Medical/wearable telemetry within regulatory guidelines

Shipping

Shipping MethodsWe

offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

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