KH-PB-22E18-WS Six-Pin Momentary Push Button Switch: A Compact and Reliable Triggering Solution

In industrial control boards, smart home modules, audiovisual equipment, instrumentation, and other electronic products, compact through-hole push button switches are essential components for human-machine interaction. Many projects require optimized PCB layout space while maintaining consistent tactile feedback and reliable electrical contact. The Kinghelm KH-PB-22E18-WS six-pin momentary push button switch offers a practical solution for through-hole designs, featuring a compact 8 mm × 8 mm base, a total height of 17 mm, and a double-pole double-throw (DPDT) circuit configuration. It is well suited for selection in high-volume consumer electronics and industrial applications.

Kinghelm KH-PB-22E18-WS Product Image

1. Key Product Specifications: Compact Six-Pin Through-Hole Design with Momentary Operation

The KH-PB-22E18-WS is a through-hole push button switch with a base measuring 8 mm × 8 mm and a total height of 17 mm. It features a blue plunger cap, a non-illuminated design, and a six-pin terminal arrangement compatible with standard PCB footprint layouts.

The switch features a momentary, self-resetting mechanism. It establishes an electrical connection when pressed and automatically returns to its original position when released. Unlike latching switches, which maintain their state after activation, this design is ideal for momentary triggering applications such as function activation, signal reset, temporary start/stop control, and parameter adjustment.

Its double-pole double-throw (DPDT) configuration provides two independent switching circuits that operate simultaneously. A single switch can therefore control two signal paths, simplifying peripheral circuit routing, reducing component count, and conserving PCB space.

2. Materials and Structural Design: Durable Materials with Multiple Operating Force Options

In terms of materials and construction, the switch is designed for durability and consistent operation.

• Knob: Made of POM (polyoxymethylene), offering good wear resistance and helping the button withstand repeated pressing without easily cracking or developing whitening.
• Cover: Also made of POM, with a white finish, good toughness, and resistance to deformation.
• Base (CASE): Manufactured from PBT 3310 material.
• Terminals: Made of brass.
• Contacts: Feature a silver-nickel composite finish, with a nickel underlayer and silver outer layer, helping resist oxidation and corrosion and maintain stable contact resistance during repeated switching.
• Internal spring: Made of stainless steel wire (SUS), providing resilient return force and helping maintain consistent tactile feedback over repeated operations.

The product specification provides several operating force options to accommodate different tactile requirements:

• 120 ± 30 gf
• 200 ± 50 gf
• 300 ± 100 gf
• 400 ± 100 gf
• 550 ± 100 gf

Engineers can select the appropriate operating force according to the intended product experience. Lower-force versions are suitable for portable consumer electronics and small household appliances, while higher-force versions can be considered for industrial control equipment where resistance to accidental activation is important.

The total travel is 2.5 ± 0.2 mm, providing a defined actuation distance and clear tactile feedback for responsive operation.

3. Installation Compatibility: Through-Hole Mounting for PCB-Friendly Design

The switch uses through-hole mounting, with pins designed for conventional PCB assembly. Its plug-in construction is compatible with traditional wave soldering processes and can offer greater tolerance during assembly than some surface-mount switch designs. It is suitable for manual insertion and high-volume production, helping manufacturers adopt the component without major changes to existing production lines.

The PCB footprint uses a six-pin matrix arrangement with a center-to-center pin spacing of 2.5 mm. The technical drawing provides a reference for the recommended bottom-side PCB pad layout. Hardware engineers can use the specification to develop the correct footprint and reduce the risk of misaligned pins, cold solder joints, and solder bridging caused by incorrectly sized pads.

Each unit has an approximate gross weight of 0.84 g and is supplied in bags, facilitating inventory management and production-line material distribution. This packaging format also supports bulk procurement and production planning.

Kinghelm KH-PB-22E18-WS Product Datasheet

4. Wide Range of Applications Across Electronic Products

The KH-PB-22E18-WS six-pin momentary push button switch is suitable for a wide variety of applications.

Consumer electronics: It can be used for momentary controls on audio amplifiers, set-top boxes, auxiliary vehicle control panels, desktop humidifiers, and charging equipment.

Industrial applications: Potential uses include reset buttons for test instruments, industrial control boards, access control modules, and security alarm systems.

Other applications: The switch can also be considered for compact medical devices, educational laboratory instruments, and communication terminals, subject to the electrical and environmental requirements of the end product.

Its DPDT configuration is particularly useful in circuits that require two signal paths to be switched simultaneously or linked through a single mechanical operation. Compared with using two separate single-pole switches, a single DPDT switch provides coordinated mechanical actuation of both circuits, avoiding differences in actuation timing between independently operated buttons.

5. Quality Control and Key Selection Considerations

Kinghelm has extensive experience in electronic components, including RF connectors, push button switches, and antennas. Under the leadership of Song Shiqiang, the team continues to refine structural designs and quality control processes.

According to the product information, the KH-PB-22E18-WS undergoes pre-shipment testing covering switching life, spring-force stability, and resistance to temperature and humidity. These tests are intended to help ensure reliable operation under typical electronic product operating conditions. The brass terminals and silver-based contact finish are designed to support stable signal transmission and reduce the risk of intermittent contact associated with oxidation.

The compact 8 mm × 8 mm base is particularly advantageous for space-constrained panel designs. Its 17 mm overall height can accommodate many conventional enclosure layouts, while the blue plunger cap provides clear visual identification for users.

When selecting this switch, engineers should pay particular attention to the following factors:

1. Momentary versus latching operation

The KH-PB-22E18-WS is a momentary, self-resetting switch. It activates when pressed and returns to its original state when released. If an application requires the switch to maintain its state after pressing and change state upon a subsequent press, a compatible latching model from the same series should be selected instead.

2. Illuminated versus non-illuminated design

This model does not include built-in illumination. Applications requiring backlighting or illuminated status indication should use an appropriate illuminated version.

3. Operating force

Operating force is a key factor in determining tactile feel and resistance to accidental activation. Lower-force options provide a lighter touch suitable for consumer products, while higher-force options require greater pressure and may be more appropriate for industrial equipment where unintended activation must be minimized.

4. PCB footprint and assembly compatibility

Before production, engineers should verify the pin arrangement, 2.5 mm center-to-center spacing, pad dimensions, and mechanical clearance against the official datasheet. Electrical ratings, environmental limits, and expected switching life should also be confirmed against the manufacturer's specifications for the intended application.

Conclusion

The Kinghelm KH-PB-22E18-WS is a compact six-pin through-hole momentary push button switch designed to balance space efficiency, operational reliability, and cost-effectiveness. Its 8 mm × 8 mm base, DPDT circuit configuration, multiple operating force options, and conventional through-hole mounting make it a practical candidate for a broad range of momentary switching applications.

For hardware development engineers seeking a domestically manufactured switch with a compact footprint, practical mechanical design, and documented specifications, the KH-PB-22E18-WS is worth evaluating. It can be considered for consumer electronics, industrial control systems, security equipment, communication devices, and other electronic products. Reliable component sourcing and appropriate model selection can help streamline product development and control material costs.

About Kinghelm

Kinghelm Audio and Video Connectors (Headphone Jack Series)

Kinghelm (www.kinghelm.net) has nearly 20 years of experience in microwave and RF technology, supported by a core technical team with backgrounds at Tsinghua University and the University of Electronic Science and Technology of China.

With comprehensive laboratory testing equipment, the company can independently conduct new product development and performance verification for smart terminal devices. Its intelligent and flexible manufacturing facility in Luzhai, Guangxi, provides production capacity to support large-volume orders, enabling Kinghelm to deliver reliable products and services to customers worldwide.

The Kinghelm product portfolio covers BeiDou/GPS antennas, Bluetooth and Wi-Fi antennas, and a comprehensive range of RF jumper cables and interconnects. Popular models include KH-IPEX-K501-29, KH-SMA-K513-G, KH-TYPE-C-16P, KH-SMA-KE-Z, KH-SMA-KWE17-G, KH-MMCX-Z, KH-3216-A35, and KH-IPEX4-2020.

The company also offers a broad range of signal connectors, board-to-board connectors, PCB headers and sockets, and switches. In addition, Kinghelm supports customized medical wiring harnesses, automotive wiring harnesses, non-standard antennas, and connector development, providing integrated services spanning technical drawings, tooling, testing, and mass production.

KH-PB-22E18-WSView Product Details