KH-A42002-2X1AW 4.2mm Right-Angle Wire-to-Board Connector: 7A Current Rating for Reliable Connections and Compact Layouts

In electronic hardware systems, wire-to-board connectors serve as critical interconnection points between cables and PCBs, directly supporting stable signal and power transmission. The Kinghelm KH-A42002-2X1AW is a 4.2mm-pitch, 2×1P double-row, right-angle wire-to-board connector. Featuring a proven housing design and stable electrical performance, it is widely used in small- and medium-power applications such as power modules, industrial control equipment, smart home devices, and LED lighting drivers, providing hardware engineers with a reliable and efficient wire-to-board connection solution.

Kinghelm KH-A42002-2X1AW Product Image

• Part Number: KH-A42002-2X1AW
• Product Type: Wire-to-board connector
• Position Configuration: 2×1P double-row
• Pitch: 4.2mm
• Mounting Type: Right-angle through-hole soldering
• Rated Current: 7A (AC/DC)
• Rated Voltage: 600V (AC/DC)
• Operating Temperature: -25°C to +85°C
• Housing Material: PA66, UL94V-2 flame-retardant rating
• Contact Material: Tin-plated brass
• Contact Resistance: Max. 20mΩ
• Insulation Resistance: Min. 1000MΩ
• Withstanding Voltage: 1500V AC for 1 minute
• Packaging: Bag

Reliable Materials and Manufacturing

The connector housing is made of PA66 thermoplastic material and meets the UL94V-2 flame-retardant rating. It offers good heat resistance, mechanical strength, and insulation performance. The material helps maintain dimensional stability in elevated-temperature environments and reduces the risk of electrical short circuits.

The contact pins are made of brass with tin plating, providing good electrical conductivity while improving oxidation resistance and solderability during wave soldering. This contributes to reliable solder joints and simplified assembly processes.

The housing features a well-designed locking mechanism. Once the mating connector is inserted, it locks securely in place and is resistant to accidental loosening. Even after repeated mating and unmating cycles, the connector maintains stable contact performance, helping extend the service life of the overall equipment.

Right-Angle Design for Space-Constrained Applications

The KH-A42002-2X1AW adopts a right-angle through-hole soldering design. The pins are bent 90° and soldered to the PCB, while the cable mating direction is perpendicular to the PCB plane.

This configuration is particularly suitable for applications where overall equipment thickness is limited or where the back side of the PCB is densely populated with surface-mount components. Since no additional clearance is required underneath the PCB for pin penetration, the right-angle design can help reduce overall equipment thickness and improve the utilization of internal assembly space.

Right-Angle vs. Vertical Connectors

When selecting a wire-to-board connector, engineers often need to choose between right-angle and vertical configurations. These are different mounting structures, each suited to specific mechanical designs.

For a vertical connector, the pins are perpendicular to the connector housing and pass through the PCB, while the cable mating direction is generally parallel to the PCB surface. This configuration requires sufficient clearance on the opposite side of the PCB for the pins.

In contrast, the pins of a right-angle connector are bent before soldering and occupy the same side of the PCB. This eliminates the need for additional clearance beneath the board.

From a mechanical loading perspective, the insertion and removal force of a vertical connector is primarily along the pin axis, while a right-angle connector transfers the mating force more parallel to the PCB surface. In applications subject to vibration or cable pulling, this structure can provide improved mechanical stability.

Neither configuration is inherently superior; the appropriate choice depends on the mechanical structure and space requirements of the equipment. The KH-A42002-2X1AW right-angle version is specifically designed to address space constraints in compact and low-profile devices.

Kinghelm KH-A42002-2X1AW Datasheet

Wide Range of Applications

With a 7A current rating and compact 2×1P configuration, the KH-A42002-2X1AW is suitable for a wide range of applications.

Inside switching power supplies, for example, internal space is often limited and the back side of the PCB may be densely populated with SMD components. The right-angle design eliminates the need for additional clearance beneath the PCB, allowing the cable to be connected upward and simplifying the assembly process.

The connector can also be used in compact industrial control modules, LED lighting driver boards, smart home control boards, and other electronic devices where reliable power connections and efficient space utilization are required.

The product is also compatible with industry-standard 4.2mm-pitch connectors, allowing direct replacement of components with the same specifications and helping reduce material replacement costs during product development and maintenance.

Reliable Wire-to-Board Connectivity for Hardware Applications

When selecting a connector for a hardware project, engineers should consider not only pitch, number of positions, rated voltage, and rated current, but also the internal space available in the equipment, vibration conditions, operating temperature range, and flame-retardant requirements.

The Kinghelm KH-A42002-2X1AW undergoes strict factory inspection to ensure stable structural and electrical performance. It combines reliable connectivity, convenient assembly, efficient space utilization, and cost-effectiveness, making it a suitable solution for wire-to-board connections in small- and medium-power electronic equipment.

Although connectors may be relatively small components within an electronic system, the failure of a single connection point can potentially cause malfunction of the entire device. With years of experience in interconnection components, Kinghelm continues to provide a broad portfolio of RF connectors, board-to-board connectors, wire-to-board connectors, and other interconnect solutions. The KH-A42002-2X1AW continues this commitment to product quality and provides stable and reliable connectivity for a wide range of electronic hardware projects.

About Kinghelm

Song Shiqiang introduced that Kinghelm's products—including tactile switches, detection switches, slide switches, push-button switches, micro switches, multifunction switches, illuminated switches, DIP switches, toggle switches, headphone jacks, DC jacks, FPC connectors, USB connectors, waterproof USB connectors, Type-C connectors, SMA connectors, IPEX connectors, MCX connectors, HDMI connectors, automotive wiring harnesses, adapter cables, and more—are popular through both online and offline sales channels.

Among its DIP switch products, KH-BM2.54-4P is one of the popular models, while KH-TYPE-C-16P is the company's highest-selling Type-C female connector model.

KH-A42002-2X1AWView Product Details