2.54x2.54mm 1x4P Single Row Gate-Type Pin Header (Middle 2P Empty), Triple-layer plastic insulator 180 Degree Straight Plug Pin Header

All technical parameters are strictly standardized and calibrated to meet global electronic assembly requirements, with precise dimensional tolerance control and stable material performance indicators, fully compatible with mainstream PCB design specifications worldwide.

1. Structural & Dimensional Parameters

Customization Note: Pitch, insulator height, row count, pin count and mounting style all support custom specifications to match specific PCB design requirements.

2. Material & Surface Plating Specifications

• Insulator Material: High-performance PA6T engineering plastic, featuring high temperature resistance, flame retardancy, insulation stability and anti-aging properties

• Pin Material: High-purity brass with excellent electrical conductivity and mechanical toughness, not easy to deform or oxidize

• Plating Process: Standard Gold or tin over 50μ" Ni regular gold plating on pin surface, effectively improving oxidation resistance, corrosion resistance and plug-in stability
• The square hole positioning structure is matched with precise pin body calibration, which improves the assembly accuracy by 30% compared with round hole pin headers.and the pin length, bending angle, and tail size can be customized according to customer drawings and sample requirements.
  
  

3. Electrical Performance Parameters

• The product has excellent electrical conductivity and stable load capacity.
• Current rating：3.0AMP
• Contact resistance：30mΩ Max
• Insulation resistance:1000mΩ Min,which can effectively avoid current leakage and signal interference.
• Withstand voltage:600V AC/minute,ensuring safe and stable operation of the circuit. The electrical performance is stable in a wide temperature range, without virtual connection or signal attenuation.

This 2.54×2.54mm gate-type square hole single-row 1×4P pin header with two middle pins vacant features a sturdy triple-layer plastic 180° straight plug structure with an overall height of 18mm and precise dimensional specifications of PA=7.5mm, PC=3.0mm and PB=7.5mm; its customized 1×4P layout with two central pins empty delivers targeted circuit isolation, effectively eliminating signal crosstalk and potential short-circuit interference while reserving extra space for simplified PCB wiring layout, and the unique triple plastic insulator design provides triple insulation protection, superior structural rigidity, remarkable compression and deformation resistance compared to single or dual plastic counterparts, alongside built-in positioning bumps for reliable anti-loosening locking after through-hole installation to prevent component shift or detachment from mechanical vibration and external impact, complemented by premium PA6T high-temperature resistant plastic housing and brass contacts coated with evenly distributed, strongly adhesive gold plating that ensures long-term stable low-impedance electrical conduction, great flame retardancy and anti-corrosion performance, making it fully compatible with automated wave soldering production lines and suitable for a broad range of industrial control, communication and consumer electronic devices.

1. Premium Gold Plating Process for Superior Conductivity & Durability

Gold or tin over 50μ" Ni on high-purity brass pins, the product achieves ultra-low contact resistance and stable electrical transmission performance. The gold plating layer features uniform thickness, strong adhesion, excellent oxidation resistance and corrosion resistance, which can effectively resist oxidation, rust and corrosion in humid, dusty and long-term working environments. It avoids poor contact, signal interruption and circuit failure caused by pin oxidation, ensuring long-term stable and consistent electrical connection performance. Compared with ordinary tin-plated pin headers, it has longer service life and more reliable transmission effect, especially suitable for long-term uninterrupted operation of precision equipment.

2. Precise Dimensional Calibration & Convenient Assembly

All dimensions including total height 18mm, PA=7.5mm, PC=3.0mm, PB=7.5mm are precisely calibrated with strict tolerance control, fully matching international standard 2.54mm pitch PCB boards. The unique clamping buckle positioning design delivers anti-loosening performance after through-hole mounting. It firmly locks the plastic insulator in place and effectively prevents displacement or detachment caused by equipment vibration and external impact. The straight plug installation mode is simple and efficient, compatible with manual assembly and automatic welding production lines, greatly improving production and assembly efficiency and reducing production costs for customers.

3. High Temperature Resistance & Wide Environmental Adaptability

Adopting high-grade PA6T engineering plastic insulator, the product has outstanding high temperature resistance, low temperature resistance and anti-aging performance. It can work stably in the temperature range of -40℃ to +85℃ for a long time, and is not affected by temperature changes. The UL94 V-0 flame retardant grade meets global electronic safety standards, effectively preventing fire hazards caused by circuit short circuits. It can adapt to various harsh working environments such as indoor, outdoor, industrial workshop and vehicle-mounted scenarios, with strong environmental compatibility and high safety factor.

With its customized structural design, stable electrical performance and high safety, This 2.54mm 1×4P straight-through pin header with two middle pins empty and triple-layer plastic insulator is widely applied in precision electronic equipment, industrial control systems, intelligent terminal products and other fields, covering multiple industry application scenarios:

• Industrial Control Equipment: PLC control modules, industrial sensor connecting terminals, relay modules, industrial switching power supplies, and automated equipment circuit connection systems. The anti-interference and stable connection performance ensures the continuous and stable operation of industrial equipment.
  
  

• Consumer Electronics: Smart home equipment, wearable electronic devices, household appliance control boards, audio and video equipment, and small intelligent terminal circuits. The compact structure and convenient assembly meet the lightweight and miniaturization design requirements of consumer electronics.
  
  

• Communication Equipment: Mini communication modules, signal transceiver equipment, network terminal accessories, and communication circuit wiring systems. The empty-middle isolation design effectively avoids signal crosstalk and improves communication accuracy and stability.
  
  

• Automotive Electronics: Vehicle-mounted control modules, automotive sensor connectors, in-vehicle intelligent equipment circuits, adapting to vehicle vibration and temperature-changing working environments with high durability and stability.
  
  

• Medical Electronic Devices: Portable medical equipment, medical detection instrument circuit boards, precision medical control modules, meeting the high precision and high stability requirements of medical equipment connections.
  
  

• DIY Electronic & Experimental Modules: University electronic experimental boards, Arduino expansion modules, circuit DIY accessories, providing standardized and reliable connection solutions for electronic research and development and experimental testing.
  
  

• Power Supply & Lighting Equipment: Small switching power supplies, LED intelligent lighting control boards, power distribution module terminals, with excellent insulation and pressure resistance to ensure safe power connection.
  
  

Q1: What are the core advantages of the design with one middle pin vacant compared to ordinary 1×3 pin headers?

A1: Compared with ordinary full-pin 1×3 pin headers, the design with one middle pin vacant creates an independent isolation area between the two functional pins, which effectively suppresses signal crosstalk and electromagnetic interference between circuits, increases the electrical clearance and creepage distance to avoid short-circuit hazards caused by soldering tin residue, dust or moisture, reserves sufficient avoidance space for PCB wiring and internal equipment structures to solve layout conflicts, and perfectly matches circuit schemes that only need two signal channels with an intermediate separation zone, greatly improving circuit stability, operation safety and structural design flexibility while cutting PCB layout and assembly costs.

Q2: What are the differences between triple-layer plastic pin headers and single-layer as well as dual-layer plastic pin headers?

A2: Triple-layer plastic pin headers outperform both single-layer and dual-layer plastic pin headers comprehensively in structural strength, insulation performance and environmental adaptability. The triple-layer plastic insulator forms three layers of independent insulation barriers, which can thoroughly isolate leakage current and external electromagnetic interference to realize superior signal anti-crosstalk capacity; its three-stage stacked structure significantly boosts overall rigidity, compression resistance and deformation resistance, resisting high-temperature cracking during wave soldering, long-term thermal aging and mechanical vibration far better than single and double plastic versions. Single plastic pin bases only provide basic single-layer insulation with fragile structures prone to bending and fracture, while dual plastic types own double insulation protection yet still have limited structural stability under harsh working conditions. Additionally, triple-layer plastic pin headers feature more accurate positioning after PCB through-hole mounting and a higher finished welding yield, perfectly matching high-standard application scenarios including industrial control equipment, automotive electronics and precision medical instruments, whereas single and double plastic pin headers can merely satisfy low-load, low-vibration consumer electronic products with lower service life standards.

Q3: Is this product available with gold plating or tin plating with nickel base thickness over 50 microinches, and is it suitable for long-term service?

A3: Absolutely reliable. Whether the product adopts gold plating or tin plating with nickel base thickness exceeding 50 microinches, the gold plating layer features uniform thickness and strong adhesion.

, with excellent oxidation resistance, corrosion resistance and wear resistance. It can maintain stable low-resistance electrical transmission for a long time in humid, dusty and high-temperature environments, avoid poor contact and signal failure caused by pin oxidation, and support more than 1000 times of plug-in cycles, fully meeting the long-term operation requirements of industrial and civilian electronic equipment.

Q4: Can this pin header be adapted to automatic welding production lines?

A4: Yes. The product adopts standard 2.54mm pitch and precise dimensional calibration, with neat pin arrangement and no deformation. The straight plug structure and clamping buckle positioning design are compatible with automatic plug-in and wave soldering processes. It can perfectly adapt to automatic production line operations, effectively improving production efficiency and reducing manual assembly errors.

Q5: What is the operating temperature range and safety grade of the product?

A5: The product can work stably in the temperature range of -40℃ to +85℃, adapting to most indoor, industrial and vehicle-mounted working environments. The insulator adopts PA6T material with UL94 V-0 flame retardant grade, which has excellent fireproof and anti-scalding performance, meeting international electronic safety standards and ensuring zero safety hazard in normal use.

Q6: Can you provide customized pin header specifications and sizes?

A6: Yes. We support full-range customized services of pin headers, including non-standard pitch, special pin number, customized height, different plating thicknesses, bending angles and structural designs. We can provide one-stop customized solutions according to customers’ PCB design drawings and application requirements.

We are a professional manufacturer of high-precision electronic connectors, focusing on the R&D, production and sales of various pin headers, female headers, terminal connectors and customized connecting components. With advanced production equipment, mature production technology and strict quality control system, we are committed to providing global customers with high-quality, cost-effective electronic connector products and professional customized services.

All our products comply with international industry standards and have passed multiple quality certifications, with stable performance and reliable quality, winning long-term trust and praise from customers in Europe, America, Southeast Asia and other regions. Whether you need spot wholesale, bulk procurement or personalized customized connector solutions, we can provide you with efficient and professional one-stop service.

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