KH-PB-22E27 Push Button Switch: Compact 7×7 mm DPDT Design

As electronic devices continue to become smaller and more widespread, push button switches have become essential components for human-machine interaction. Their size, reliability, tactile feel, and circuit functionality directly affect the overall user experience. Achieving reliable state retention within limited PCB space has become an ongoing concern for hardware engineers. Kinghelm has introduced the KH-PB-22E27 six-pin latching push button switch, featuring a compact 7 mm × 7 mm footprint and a latching mechanism. It offers a practical solution for high-density PCB layouts and space-constrained applications that require reliable state control.

Kinghelm KH-PB-22E27 Product Image

Product Overview

The KH-PB-22E27 is a compact push button switch designed for through-hole mounting. It measures just 7 mm × 7 mm, with an overall height of 15.9 mm, and features a six-pin double-pole double-throw (DPDT) circuit configuration.

Its key feature is the latching mechanism: pressing the button once locks the switch in the ON position, while pressing it again releases the latch and returns the switch to the OFF position. This allows the circuit state to be maintained without continuous pressure. Compared with non-latching switches, it offers greater convenience for applications requiring state retention and control.

With its compact dimensions, the KH-PB-22E27 is well suited to applications that require both high-density PCB layouts and space-efficient, state-retaining switching.

Key Specifications

Design and Material Advantages

Compact Structure and Precise Tolerances

Designed for high-density applications, the KH-PB-22E27 takes installation and soldering requirements into account. Key dimensions marked with an asterisk (*) are subject to strict tolerance control: dimensions of 1.5 mm or less have a tolerance of ±0.1 mm, while dimensions greater than 1.5 mm have a tolerance of ±0.2 mm.

The six-pin through-hole design provides stable mechanical support. Combined with its overall height of 15.9 mm, the switch can be integrated into a variety of PCB assemblies and product enclosures, subject to the specific mechanical design requirements.

Carefully Selected Materials for Electrical and Mechanical Performance

The KH-PB-22E27 reflects Kinghelm's focus on reliability through its material selection:

• Spring: Stainless steel (SUS), designed to provide consistent spring return and mechanical performance.
• Contact: Phosphor bronze (PBS C5210R-EH) with silver plating, supporting good electrical conductivity and low contact resistance.
• Terminals: Phosphor bronze or brass, with nickel underplating and a tin-plated finish.
• Insulating base: PBT with a UL94 V-0 flame-retardant rating.
• Cover and button head: Polyoxymethylene (POM), offering good wear resistance and tactile characteristics.

This combination of materials is designed to provide stable electrical contact and durable mechanical performance.

Kinghelm KH-PB-22E27 Specification

Typical Applications

With its compact size, latching mechanism, and DPDT configuration, the KH-PB-22E27 is suitable for a wide range of electronic devices requiring state retention.

• Instrumentation: Mode selection and power switching in measurement equipment.
• Home appliances: Control panels for appliances such as washing machines and rice cookers, where latching operation is required.
• Consumer electronics: Space-constrained products such as speakers, chargers, and compact medical devices.
• Office and communication equipment: Power management and function switching in electronic equipment.

The through-hole mounting design facilitates both manual soldering and automated production processes, making the switch suitable for applications where space is limited and dependable operation is important.

Kinghelm Quality and Technical Support

Kinghelm has more than a decade of experience in the design, manufacturing, sales, and technical support of wireless signal transmission products, electronic signal connectors, and interconnection systems.

Under the leadership of founder Mr. Song Shiqiang, the company continues to focus on miniaturization, high reliability, and cost-effectiveness. Kinghelm provides customers worldwide with switches, connectors, and other electronic components, supported by technical expertise and quality management throughout product design, material selection, and manufacturing.

The KH-PB-22E27's dimensional tolerance controls and flame-retardant materials demonstrate the company's commitment to product quality and reliable performance.

About Kinghelm

Kinghelm (www.kinghelm.net) offers a broad portfolio of connectors and switching components, including headphone jacks, DC power jacks, FPC connectors, USB connectors, waterproof USB connectors, detection switches, vertical detection switches, through-hole detection switches, SMD coding switches, limit switches, rotary coding switches, tactile push buttons, Type-C receptacles, Type-C interfaces, joystick switches, five-way switches, rotary wheel switches, and SMD detection switches.

Key models in the Kinghelm KH series include KH-6X6X6H-STM, KH-IPEX-K501-29, KH-6X6X5H-STM, KH-6X6X5H-Z2J, KH-3216-H0209, KH-VH-PT3.96, and KH-SMA-P-8029.

Together with Slkor (www.slkoric.com), which supplies electronic components, sensors, TVS diodes, power devices, clock ICs, and other semiconductor products, Kinghelm forms part of a complementary product portfolio designed to serve customers worldwide with a broad range of electronic components and professional technical support.

KH-PB-22E27View Product Details