In audio and electronic systems, the headphone jack serves as a key interface for transmitting sound signals between devices and external audio equipment. According to size and structure, common headphone jack types include 2.5mm, 3.5mm, and 6.35mm connectors. The 2.5mm jack is often used in compact or space-limited devices, while the 6.35mm jack is typically found in professional audio equipment and large sound systems. Among them, the 3.5mm headphone jack stands out for its balanced size, broad compatibility, and ease of use, making it one of the most widely adopted audio interfaces across consumer electronics and industrial products.

Kinghelm KH-PJ-23007-05DBAP-A Product Image

The popularity of the 3.5mm headphone jack is closely related to its versatility. It supports a wide range of headphones, speakers, and audio cables, and its mechanical structure provides stable contact during repeated insertion and removal. Compared with smaller connectors, it offers better durability, while remaining more compact and flexible than larger audio interfaces. As a result, it continues to be used in smart devices, portable electronics, testing instruments, and various embedded systems.

As application environments become more diverse, higher requirements are placed on the reliability and protection level of audio connectors. In outdoor equipment, industrial terminals, or devices exposed to dust and moisture, headphone jacks must maintain stable electrical performance while resisting environmental influences. Factors such as waterproof design, contact material, operating temperature range, and service life have become important considerations during product selection.

The Kinghelm KH-PJ-23007-05DBAP-A 3.5mm headphone jack from Kinghelm is designed to meet these practical requirements. This model adopts an IP67 waterproof structure, helping to reduce the impact of water and dust on signal transmission. Its circular mating interface and 5-pin through-hole design with reverse-mount configuration contribute to secure installation and stable soldering on printed circuit boards.

From a structural and material perspective, the contacts of this headphone jack are made of stainless steel, providing good resistance to wear and corrosion under frequent use. The connector is rated for a current of 1A, with an insulation resistance of at least 100MΩ and a contact resistance not exceeding 100mΩ, ensuring consistent audio signal transmission under normal operating conditions. Its dielectric withstanding voltage reaches AC 500V, supporting electrical safety in various device designs.

Durability is another important aspect of this product. The KH-PJ-23007-05DBAP-A is designed to withstand a minimum of 5,000 insertion and withdrawal cycles, making it suitable for devices that require repeated audio connections. The insertion and separation force ranges from 3N to 30N, balancing firm contact with comfortable operation. In terms of environmental adaptability, it supports an operating temperature range from –25°C to +85°C, allowing it to function reliably in different climate and working conditions.

Regarding packaging and assembly, this headphone jack uses a through-hole mounting method and is supplied in tape packaging, which supports automated assembly processes in mass production. With a unit weight of approximately 2.7 grams, it has minimal impact on overall device weight, an advantage for portable and compact electronic products.

In practical applications, this 3.5mm headphone jack can be used in smart terminals, portable audio devices, vehicle electronics, industrial control panels, handheld testing instruments, and other equipment that requires stable audio input or output. For devices that rely on wired headphones for sound playback, monitoring, or debugging, the 3.5mm interface remains a widely accepted and user-friendly solution.

Kinghelm KH-PJ-23007-05DBAP-A Specification

Overall, the Kinghelm KH-PJ-23007-05DBAP-A 3.5mm headphone jack combines waterproof capability, reliable electrical performance, and practical structural design. Its balanced specifications make it suitable for a broad range of electronic products where dependable audio connectivity and environmental adaptability are important considerations.

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.