Kinghelm Electronics Co., Ltd

A female header connector  is a PCB or cable connector whose contacts are hollow sockets — designed to receive the pins of a mating male header. It is one of the most common interconnect components in electronics, found everywhere from Arduino shields to industrial control boards. This guide is for:  PCB designers, embedded systems engineers, and makers who need to understand, select, or solder female headers correctly. Not covered:  High-current power connectors, RF/coaxial connectors, or crimp-tool assembly of wire harnesses — these fall outside the standard pin-header family and have separate selection criteria. What Is a Female Header? A female header consists of a row (or grid) of spring-loaded socket contacts housed in a plastic insulator body. Each socket is sized to receive a standard male pin. The term "female" describes the receptive contact geometry — the pin inserts into  the socket — consistent with IEC 60050-151 general connector terminology. Three para...

When working with Bluetooth modules, many users face common frustrations: weak signal strength, short transmission range, and poor penetration through walls. This often leads to the question: Can switching to a better antenna significantly improve Bluetooth performance? The answer is yes — but only if you choose the right type. Picking the wrong antenna can result in worse signal quality, higher power consumption, or even damage to your module. This guide covers the main Bluetooth antenna types, performance comparisons, selection criteria, installation tips, and common pitfalls to help you make the right choice. 1. Main Types of Bluetooth Antennas and Their Characteristics Bluetooth operates at 2.4GHz. Different antenna structures offer unique advantages and trade-offs. Here are the most common types currently available: 1. Patch Antenna  Compact, low-cost, and easy to integrate. Often used as onboard or external small antennas. 2. Ceramic Antenna  Tiny chip-style ceramic ante...