KH-4.5X4.5X12H-TJ Tactile Switch: Compact Design, Reliable Choice

In the field of electronic components, even the smallest component can play a critical role in determining overall product performance. As one of the most basic and widely used electronic components for human-machine interaction, tactile switches are extensively used in a wide range of electronic devices, including household appliances, automotive electronics, industrial control systems, digital products, and more.

The KH-4.5X4.5X12H-TJ tactile switch, developed by Kinghelm, is a high-performance product that combines high reliability, compact design, and excellent tactile feedback.

Kinghelm KH-4.5X4.5X12H-TJ Product Image

1. Product Overview and Key Specifications

The KH-4.5X4.5X12H-TJ belongs to the tactile switch series of Kinghelm and is classified under the tactile switch product category. The product features a Single Pole Single Throw (SPST) circuit configuration, a round button, and a through-hole mounting design with PC terminals.

Its dimensions are 4.5 mm in length, 4.5 mm in width, and 12 mm in height. The switch does not include a bracket or built-in LED, and the button/cap is available in classic black. The product is packaged in bags of 1,000 pieces per bag, with a gross weight of only 0.2253 g per unit.

• Product Category: Tactile Switch

• Circuit Configuration: Single Pole Single Throw (SPST)

• Button Shape: Round

• Mounting Type: Through-Hole

• Switch Length: 4.5 mm

• Switch Width: 4.5 mm

• Switch Height: 12 mm

• Bracket: Without Bracket

• Button/Cap Color: Black

• Illumination: None

• Terminal Type: PC Terminals

In terms of electrical performance, the switch is rated at 50 mA and 12 V DC. Its compact 4.5 mm × 4.5 mm footprint, combined with a 12 mm height, makes it particularly suitable for applications where PCB space is limited while still providing sufficient operating height for convenient finger actuation.

2. Technical Features and Product Advantages

The key advantages of the KH-4.5X4.5X12H-TJ tactile switch can be summarized in three main areas:

1. Highly Reliable Circuit Configuration

Although the SPST circuit configuration is simple, it provides excellent reliability in control circuits. This configuration helps ensure accurate and stable switching operation while minimizing contact resistance and contributing to a long mechanical service life. These characteristics are especially important for equipment that requires frequent button operation.

2. Convenient Through-Hole Mounting

The through-hole mounting design with PC terminals provides a convenient and efficient installation method suitable for a variety of applications. The PC terminals can be securely soldered to the PCB, making the switch particularly suitable for rapid assembly and high-volume production. This can help reduce both installation time and manufacturing costs.

3. Durable and Attractive Design

The black round button offers a clean, modern appearance while providing good wear resistance and aging resistance. With a height of 12 mm, the switch provides a comfortable operating feel and clear tactile feedback. For applications such as industrial control panels and human-machine interfaces that require frequent operation, clear tactile feedback can help reduce the risk of accidental operation.

3. Wide Range of Applications

The KH-4.5X4.5X12H-TJ tactile switch can be used in a wide range of applications, including but not limited to the following:

• Household Appliances: Control panels for air conditioners, televisions, audio equipment, white goods, and other home appliances

• Automotive Electronics: In-vehicle navigation systems, multimedia systems, power window controls, and other automotive applications

• Industrial Control: Industrial control panels, human-machine interfaces (HMIs), measuring instruments, and other control equipment

• Digital Products: MP3/MP4 players, mobile phones, tablets, remote controls, and other portable electronic devices

• Communication Equipment: Base station equipment, communication terminals, and related devices

• Medical and Security Equipment: Operating panels for medical devices, security control equipment, and other applications
  
  

4. Kinghelm — Connecting the World

Shenzhen Kinghelm Electronics Co., Ltd. was established in 2007. It is a National High-Tech Enterprise and a provider of hardware R&D, manufacturing, sales, and system solutions for BeiDou satellite navigation and IoT terminal applications.

The company specializes in microwave and RF technologies and operates under the development philosophy of “Kinghelm, Connecting the World.”

Kinghelm offers a comprehensive range of products. In addition to tactile switches, its product portfolio includes antenna products such as BeiDou/GPS antennas, Wi-Fi antennas, 4G antennas, internal antennas, and ceramic antennas.

Its connector portfolio includes Type-C connectors, HDMI connectors, SMA connectors, IPEX connectors, MCX connectors, as well as various RF coaxial and RF connectors. Its interconnect product range also includes pin headers, terminals, automotive wiring harnesses, adapter cables, and RF cables.

These electronic components are widely used in new energy vehicles, the Internet of Things (IoT), smart terminals, communication equipment, and many other fields.

The Kinghelm brand has obtained multiple BeiDou-related invention patents and software copyrights and is a member of organizations including the China Satellite Navigation Association, China Information Industry Trade Association, and Guangdong Connector Association.

5. Quality Assurance and Cost Advantages

While maintaining high product quality, the KH-4.5X4.5X12H-TJ tactile switch also offers a highly competitive price advantage.

According to market quotations, its tiered pricing ranges from approximately RMB 0.2509 per piece for orders starting from 10+ units to RMB 0.1287 per piece for orders of 10,000+ units, offering excellent cost performance.

The product is available from stock in sufficient quantities to meet the procurement requirements of customers with different order volumes.

Kinghelm KH-4.5X4.5X12H-TJ Datasheet

6. Usage Precautions

To ensure normal operation and extend the service life of the KH-4.5X4.5X12H-TJ tactile switch, Kinghelm recommends observing the following precautions:

1. Carefully read the product specifications and instructions before installation to ensure proper installation and operation.

2. Avoid using the switch in high-temperature, high-humidity, or corrosive environments.

3. Avoid excessive or improper operation, as this may affect the mechanical service life and electrical performance of the switch.

4. Do not operate the switch beyond its rated voltage or contact current.

Conclusion

The KH-4.5X4.5X12H-TJ is a tactile switch developed by Kinghelm that combines high reliability, an attractive and durable design, convenient installation, and broad application compatibility.

Featuring an SPST circuit configuration and through-hole mounting, the switch has a compact 4.5 mm × 4.5 mm footprint and a 12 mm height, complemented by a black round button design. It provides reliable and convenient switching performance across a wide range of applications, including household appliances, automotive electronics, industrial control systems, digital products, communication equipment, medical devices, and security equipment.

Whether for high-volume procurement or R&D component selection, the Kinghelm KH-4.5X4.5X12H-TJ is a reliable and cost-effective tactile switch solution.

About Kinghelm

Shenzhen Kinghelm Electronics Co., Ltd.（www.kinghelm.net）has technical backbones from Tsinghua University and UESTC, and has introduced overseas returnee professionals. Kinghelm is able to develop highly reliable and high-performance antenna and connector products.KH series products of "Kinghelm" brand include Beidou/GPS antennas, RF adapter connectors, plug connector, electrical data connectors, terminals, and customized vehicle harnesses, industrial / medical connectors, and special antenna connectors."Kinghelm connects world", Kinghelm has grown with the development of China's Beidou industry. Starting from supplying Beidou/GPS dual mode antennas, IPEX terminals, and RF adapter cables for automotive manufacturers, Kinghelm has continuously developed products. Currently, it has a series of WiFi, Bluetooth, NB-loT, LoRa, Zigbee, UWB, and GSM antennas, RFID tags, RF adapter cables, standard microwave antennas, vehicle grade SMA, SMB, FAKRA holders, coaxial cables, and can customize non-standard antenna connectors based on customer drawings or samples.

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