KH-2FH90-2X3P-H6.35 Dual-Row Right-Angle Female Header: 2 mm Pitch, 2×3P Square-Hole Selection and Applications

As electronic devices continue to evolve toward miniaturization and higher connection density, the selection of board-to-board connectors directly affects PCB layout, assembly efficiency, and overall product reliability. The Kinghelm KH-2FH90-2X3P-H6.35 dual-row right-angle female header features a uniform 2 mm pitch, a 2×3P square-hole configuration, and a right-angle mounting design. With an operating temperature range of -40°C to +105°C, it provides a reliable board-to-board connection solution for consumer electronics, industrial control systems, communication equipment, and other applications.

Kinghelm KH-2FH90-2X3P-H6.35 Product Image

1. Product Overview and Key Specifications

The KH-2FH90-2X3P-H6.35 is a dual-row, right-angle female header developed by Kinghelm. Its product specifications include right-angle mounting, a 2 mm pitch, box packaging, a 2×3P socket configuration, a 2 mm row spacing, square holes, a dual-row layout, a rated current of 1.5 A, a plastic height of 4 mm, and an operating temperature range of -40°C to +105°C.

This model is suitable for conventional PCB mounting applications, particularly board-to-board connections that require lateral mating or must accommodate limited installation space.

For engineers comparing 2 mm pitch dual-row right-angle female headers or 2×3P square-hole headers, the KH-2FH90-2X3P-H6.35 is a model worth considering. It combines the space-saving benefits of a 2 mm pitch with a square-hole contact configuration, making it suitable for low- to moderate-current signal transmission and module interconnection.

2. Advantages of the 2 mm Pitch and Right-Angle Design

A 2.54 mm pitch is a classic connector specification, while pitches of 1.27 mm or smaller are generally used in ultra-high-density applications and may impose greater demands on PCB fabrication and soldering processes. A 2 mm pitch offers a practical balance between space efficiency and manufacturing feasibility, making it suitable for applications that require multiple signal connections within a limited PCB footprint.

The KH-2FH90-2X3P-H6.35 adopts a uniform 2 mm pitch, making it suitable for arranging a moderate number of signal channels in space-constrained designs.

Its right-angle mounting configuration is another key feature. The right-angle structure allows the female header to be mounted along the edge of a PCB, enabling horizontal mating with a compatible pin header and facilitating connections in the direction parallel to the board surface.

In modular electronic products, a right-angle female header can connect a mainboard to a functional daughterboard through lateral mating. This arrangement helps reduce vertical clearance requirements while making modules easier to remove, replace, and maintain. For applications requiring a 2 mm pitch right-angle female header, this design is particularly useful in compact equipment.

3. Square-Hole Design and Electrical Performance

The KH-2FH90-2X3P-H6.35 features a square-hole configuration. When properly matched with a compatible pin header, the contact geometry can help provide stable electrical contact and consistent alignment. Actual contact performance and mating durability depend on the terminal design, plating, dimensional tolerances, and compatibility of the mating components.

The dual-row 2×3P configuration provides six contact positions, making it suitable for a small number of signal or power connections. Typical examples include connections between sensor modules and controller boards, or between display modules and driver boards.

From an electrical perspective, the rated current of 1.5 A supports many low-power applications. The terminal material and plating should be confirmed against the manufacturer's official datasheet rather than assumed from the product category.

With an operating temperature range of -40°C to +105°C, this wide-temperature female header may be suitable for consumer and industrial electronic equipment, provided that the complete application meets the connector's electrical, mechanical, and environmental requirements.

The 4 mm plastic height also helps designers manage connector height in compact assemblies, leaving more flexibility for PCB stacking and enclosure design.

4. Brand Profile: Kinghelm

Kinghelm is a brand under Shenzhen Kinghelm Electronics Co., Ltd. The company is a National High-Tech Enterprise, and its core team members have backgrounds at Tsinghua University and the University of Electronic Science and Technology of China. The company has focused on microwave and RF technologies for nearly two decades.

Its product portfolio includes BeiDou and GPS antennas, RF components, broadband data connectors, interconnects and terminals, automotive wiring harnesses, industrial connectors, and customized components for specialized applications.

In quality management, Kinghelm has obtained ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications. According to the supplied product information, its products comply with RoHS and REACH requirements. IATF 16949, UL, and TÜV certifications are described as being under application. These certification statuses should be verified with the company before being used for formal procurement or compliance documentation.

The company's quality inspection processes cover various performance indicators, including high-temperature resistance and oxidation resistance, helping support product consistency and reliability.

Kinghelm KH-2FH90-2X3P-H6.35 Datasheet

5. Applications: Which Devices Are Suitable for This 2 mm Female Header?

The KH-2FH90-2X3P-H6.35 can be considered for a range of electronic manufacturing applications.

• Consumer electronics: Connections between mainboards and functional modules in smart wearables, tablets, compact routers, and similar devices.

• Industrial control: Interconnections in small programmable logic controllers (PLCs), sensor modules, and other control equipment where the operating temperature requirements are compatible with the connector's specifications.

• Communication equipment: Lateral board-to-board connections in compact communication modules and other space-constrained assemblies.

• Medical electronics: Internal module interconnections, subject to the applicable safety, reliability, and regulatory requirements of the finished device.

• Automotive electronics: Modular interconnections where the connector's electrical, mechanical, environmental, and qualification requirements are appropriate for the specific application.

The right-angle configuration offers flexibility for lateral board-to-board connections, while the compact 2 mm pitch helps engineers optimize PCB space utilization.

6. Selection Recommendations and Frequently Asked Questions

When selecting a female header, engineers should verify the pin pitch, row spacing, number of contact positions, mounting orientation, mating-header compatibility, and PCB footprint.

The KH-2FH90-2X3P-H6.35 has the following stated specifications:

• Pitch: 2 mm

• Row spacing: 2 mm

• Contact configuration: 2×3P, six positions

• Mounting style: Right-angle

• Number of rows: Dual row

• Hole configuration: Square

• Rated current: 1.5 A

• Plastic height: 4 mm

• Operating temperature: -40°C to +105°C

• Packaging: Box

Before finalizing the design, engineers should also confirm the PCB hole and pad dimensions, terminal dimensions, mating pin-header specifications, contact plating, insulation resistance, dielectric withstand voltage, and current derating requirements using the official datasheet.

If the application requires a higher current rating or more contact positions, other models in the Kinghelm female-header series may be more appropriate. Box packaging can also facilitate organized material handling and production-line assembly.

For board-to-board applications requiring a compact footprint, wide-temperature capability, and lateral mating, this model offers a useful combination of features for further evaluation.

Conclusion

The Kinghelm KH-2FH90-2X3P-H6.35 dual-row right-angle female header combines a 2 mm pitch, a 2×3P square-hole configuration, right-angle mounting, a rated current of 1.5 A, and an operating temperature range of -40°C to +105°C. These features make it a candidate for compact PCB layouts where space efficiency, practical manufacturability, and reliable interconnection are important.

For engineers and procurement professionals evaluating 2 mm pitch female headers, dual-row right-angle female headers, or 2×3P square-hole connectors, the Kinghelm KH-2FH90-2X3P-H6.35 is worth including in the selection process. Final approval should be based on the official datasheet and verification of the requirements of the intended application.

About Kinghelm

With more than a decade of experience in interconnection systems and wireless signal transmission, Kinghelm (www.kinghelm.net) specializes in the design, manufacturing, sales, and technical support of electronic signal connectors and related products.

The company has developed a comprehensive product portfolio covering RF coaxial connectors and other RF connectors; Wi-Fi, BeiDou, embedded, 4G, and ceramic antennas; millimeter-wave-related supporting solutions; a wide range of functional switches, including tactile, detection, slide, push-button, micro, multifunction, illuminated, DIP, and toggle switches; as well as headphone jacks, DC power jacks, FPC connectors, USB connectors, automotive wiring harnesses, adapter cables, and sensors.

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