KH-2FH-2X23P-H4.3-SMT Female Header: Precision Connection for High-Density Electronics

With the rapid development of the modern electronics industry, precision connectors, as core components for circuit interconnection in electronic equipment, play a critical role in ensuring reliable signal transmission and power conduction. As electronic products continue to evolve toward miniaturization, integration, and intelligence, the market has placed increasingly higher demands on connector dimensional accuracy, stability, compatibility, and durability.

Kinghelm has been deeply engaged in the connector industry, developing products tailored to the manufacturing needs of industrial and consumer electronic equipment. The KH-2FH-2X23P-H4.3-SMT surface-mount female header connector is one such product. Featuring a compact structural design, high-quality materials, and rigorous production and inspection processes, this connector has become an ideal choice for wiring and interconnection in small- and medium-sized electronic equipment. It is widely applicable to a variety of industrial and commercial electronic applications.

Kinghelm KH-2FH-2X23P-H4.3-SMT Product Image

1. Precise Product Specifications for High-Density Assembly

The KH-2FH-2X23P-H4.3-SMT female header connector features standardized specifications and is fully compatible with mainstream surface-mount manufacturing processes, making it suitable for automated mass production.

The connector adopts a 2.0 mm pitch design and features 2 rows of 23 positions, providing a total of 46 contacts. Its compact dual-row configuration effectively saves PCB mounting space and meets the current trend toward lightweight and miniaturized electronic devices.

Product Specifications

• Product Category: Female Header
• Pin Configuration: 2 × 23P
• Pitch: 2.0 mm
• Row Spacing: 2.0 mm
• Contact Hole Type: Square Hole
• Mounting Style: Vertical Surface Mount
• Number of Rows: 2
• Total Positions: 46P
• Rated Current: 1.5 A
• Contact Insertion Direction: Top Entry
• Plastic Height: 4.3 mm
• Contact Material: Brass
• Contact Plating: Gold
• Operating Temperature: -40°C to +105°C

In terms of structural design, the connector also features a 2.0 mm row spacing and square contact holes. Compared with round-hole designs, square holes provide more precise mating with header pins, helping to improve mating reliability and contact stability.

The top-entry design supports vertical PCB stacking and modular configurations. With a plastic height of only 4.3 mm, the connector maintains a balanced and compact profile, making it well suited for applications where installation height is limited.

2. Excellent Electrical Performance for Reliable Equipment Operation

Electrical performance is one of the most important criteria for evaluating connector quality and is essential to the safe and stable operation of electronic equipment. The KH-2FH-2X23P-H4.3-SMT female header connector undergoes professional testing and calibration to ensure balanced and reliable electrical performance for conventional consumer and industrial low-voltage circuits.

The connector supports a rated current of up to 1.5 A, providing stable current-carrying capability for power supply and signal transmission in general electronic components and control circuit boards.

In terms of insulation and conductivity, its insulation resistance is at least 1000 MΩ. The high insulation resistance helps prevent leakage and unwanted current paths, reducing the risk of short circuits and electrical interference and improving overall circuit safety.

Its contact resistance is controlled at a maximum of 20 mΩ. Low contact resistance minimizes energy loss during current transmission and helps reduce heat generation, ensuring efficient and reliable power and signal transmission.

The dielectric withstand voltage reaches AC 500 V, enabling the connector to withstand short-term voltage fluctuations and helping protect the circuit from damage caused by unstable voltage conditions.

3. Wide Environmental Adaptability for Diverse Applications

To accommodate different operating environments and conditions, the KH-2FH-2X23P-H4.3-SMT female header connector is designed with a wide operating temperature range of -40°C to +105°C.

Whether used in outdoor industrial control equipment exposed to low temperatures or in enclosed electronic systems operating at elevated temperatures, the connector is designed to maintain stable mechanical structure and electrical performance. Its wide temperature range helps reduce the risk of material aging, poor contact, and insulation failure caused by temperature changes.

The product uses high-quality insulating plastic and high-elasticity conductive terminals, combined with advanced surface-treatment processes. The terminals offer good resistance to oxidation and corrosion, helping the connector withstand conditions such as humidity and light dust and contributing to a longer service life.

Before shipment, each product undergoes rigorous testing, including insulation testing, dielectric withstand testing, and mating/unmating testing. Its robust structure helps prevent loosening, while stable contact performance helps reduce the risk of contact failure or signal interruption during long-term operation, thereby lowering maintenance requirements.

4. High-Quality Contact Material and Gold-Plating Technology

Contact material and plating technology directly affect a connector's conductivity and service life.

The KH-2FH-2X23P-H4.3-SMT female header connector uses high-quality brass contacts, providing good electrical conductivity and mechanical strength. The contacts feature Gold Flash plating, which offers excellent resistance to oxidation and corrosion.

The gold-plated surface helps maintain stable, low-impedance electrical contact between the header pins and female contacts. This plating design not only improves signal transmission reliability but also enhances mating durability, allowing the connector to maintain stable contact performance in applications involving frequent mating and unmating.

5. Tube Packaging and SMT Technology for Efficient Manufacturing

In terms of packaging and physical characteristics, the KH-2FH-2X23P-H4.3-SMT is supplied in tube packaging. Tube packaging effectively protects the connector terminals during transportation and storage, helping prevent pin deformation, oxidation, impact damage, and other potential issues and ensuring consistent product quality.

The gross weight of each connector is only approximately 2.5 grams. Its lightweight construction minimizes additional load on the PCB and makes it suitable for the assembly of thin and lightweight electronic devices, balancing structural stability with installation flexibility.

The product uses an SMD surface-mount package and is compatible with SMT assembly processes. No manual pin insertion and soldering are required; the connector can be directly placed and mounted using automated equipment, significantly improving manufacturing efficiency and making it suitable for high-volume electronics production lines.

The vertical surface-mount configuration allows the female header to be mounted closely to the PCB surface while supporting high-density layouts and automated production requirements.

Kinghelm KH-2FH-2X23P-H4.3-SMT Datasheet

6. Broad Applications Across Various Electronic Devices

With its compact structure, stable performance, and convenient surface-mount installation, the KH-2FH-2X23P-H4.3-SMT female header connector is suitable for a wide range of applications. It is designed for high-density PCB interconnection and can be widely used for signal transmission and power connections in electronic equipment.

In industrial applications, the connector can be used for industrial control mainboards, automated sensing equipment, and compact industrial control modules, supporting reliable circuit interconnection in demanding operating environments.

In commercial and consumer applications, it can be used in smart-home PCBs, communication electronics, office automation equipment, and digital control modules.

The product is also suitable for consumer electronics, communication equipment, automotive electronics, medical electronics, and other fields. Whether used in compact portable devices or larger industrial control boards, the KH-2FH-2X23P-H4.3-SMT is designed to provide stable and reliable electrical connections while helping minimize signal interference and connection failures.

Conclusion

The Kinghelm KH-2FH-2X23P-H4.3-SMT female header connector combines a fine 2.0 mm pitch, compact dual-row 46-position configuration, 1.5 A rated current, a wide operating temperature range of -40°C to +105°C, and gold-plated brass contacts to deliver reliable electrical performance and environmental adaptability in a compact form factor.

Its SMD vertical-mount configuration and tube packaging further support efficient automated mass production. The product demonstrates Kinghelm's accumulated expertise and manufacturing capabilities in the connector industry and provides a reliable precision interconnection solution for modern high-density electronic designs.

About Kinghelm

According to Shi Qiang Song, Kinghelm(www.kinghelm.com.cn) will soon open a “Kinghelm” specialty store in Huaqiangbei, Shenzhen. The product range will cover Type-C, SMA, IPEX, MCX, HDMI connectors, automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, Kinghelm antennas, GPS antennas, RF coaxial connectors, Wi-Fi antennas, BeiDou antennas, and other related products.
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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