Through hole straight pin header, 1x04, 4 pin, 4-pin, horizontal, angled, 2.54mm pitch, 6mm pin lenght single row

I-PEX MHF4 Connector Receptacle, Male Pin 50 Ohms Surface Mount Solder The 20449-001E-03 is an ultra-miniature MHF4 RF coaxial receptacle connector from I-PEX designed for high-frequency wireless applications such as Wi-Fi, Bluetooth, LTE, GNSS, and cellular antenna connections in compact electronic devices. It is a surface-mount RF connector optimized for miniature coaxial cable assemblies and high-density PCB layouts. Key Features Ultra-small MHF4 RF coaxial receptacle Supports frequencies up to 9 GHz Characteristic impedance: 50 Ω Surface-mount (SMT) PCB mounting Snap-on mating mechanism Compact footprint for space-constrained designs Gold-plated center contact for improved conductivity and corrosion resistance Uses: MHF4 compatible RF cables and antenna assemblies High-reliability micro RF interconnect Operating temperature: −40°C to +90°C Rated voltage: 60 V Approximate mating cycle rating: 30 cycles Constructed with: Brass contacts LCP (Liquid Crystal Polymer) dielectric material RoHS compliant Typical Applications Wi-Fi modules LTE/5G modules GNSS/GPS antennas Bluetooth devices IoT devices Embedded wireless systems Compact handheld electronics RF communication modules

1kCT Impedance Primary Ohms 1kCT Impedance Secondary Ohms 1:1, 2:1 Audio Transformer 20Hz ~ 20kHz Through Hole #Transformer #TY

Battery Battery Monitor IC Lithium Ion 9-DSBGA The BQ27220YZFR is a highly integrated single-cell battery fuel gauge IC developed for rechargeable lithium-ion and lithium-polymer battery applications. The device utilizes Texas Instruments’ Impedance Track™ algorithm to provide highly accurate battery capacity measurement, state-of-charge estimation, runtime prediction, and battery health monitoring across varying load and temperature conditions. The device is designed for compact portable electronics, wearable devices, IoT products, handheld instruments, and low-power embedded systems requiring precise battery monitoring and extended operating life. The BQ27220YZFR supports system-side fuel gauging without requiring battery pack-side electronics, simplifying battery integration and reducing overall system cost. The fuel gauge continuously monitors battery voltage, current, and temperature to estimate available capacity, remaining runtime, full charge capacity, and state-of-health information. Integrated low-power operation enables ultra-low standby current consumption suitable for always-on battery-powered products. Communication with the host processor is implemented through a standard I²C interface, allowing configuration access, telemetry reporting, and battery parameter monitoring. The device also integrates protection and alert functionality through programmable interrupt outputs and battery condition monitoring features. The BQ27220YZFR is optimized for use with single-cell lithium-based chemistries and supports learning cycles for adaptive battery characterization over product lifetime. Internal data flash memory stores battery profile information and calibration parameters to improve long-term gauging accuracy. The device is supplied in a compact lead-free wafer chip-scale package suitable for space-constrained PCB designs and portable electronics requiring minimal footprint and low-profile assembly. Electrical Characteristics Device Type Single-cell battery fuel gauge and battery monitor IC Battery Chemistry Support Lithium-ion and lithium-polymer rechargeable batteries Input Voltage Range Supports single-cell battery operation Fuel Gauging Method Impedance Track™ algorithm Communication Interface I²C serial interface Measurement Functions Battery voltage monitoring Battery current monitoring Battery temperature monitoring State-of-charge estimation Remaining capacity calculation Full charge capacity estimation State-of-health reporting Runtime prediction Power Consumption Ultra-low operating current for portable applications Temperature Monitoring External thermistor support Host Alert Features Interrupt and alert reporting capability Data Storage Integrated nonvolatile configuration memory Calibration Features Automatic learning and battery characterization support Protection Monitoring Battery condition and system monitoring functions Package Type DSBGA wafer chip-scale package Mounting Style Surface mount Operating Temperature Range Industrial temperature operation suitable for portable electronics Functional Features High-accuracy fuel gauging over battery lifetime Adaptive battery modeling and aging compensation Low-power operation for battery-powered systems Integrated battery profiling capability Real-time remaining runtime estimation Automatic battery learning cycles Compact PCB footprint for portable devices System-side implementation without smart battery pack requirement Programmable battery alert functionality Support for low-power embedded processors and mobile systems Optimized for wearable and IoT applications RoHS compliant and lead-free package construction #commonpartslibrary #integratedcircuit #powermanagement #batterymanagement