M5 Series Wire Soldering Aviation Connector | Plastic & Metal Shell Optional

The M5 series wire soldering aviation connector adopts a standard M5 thread installation structure, with a compact overall size and precise dimensional tolerance, which is suitable for narrow installation spaces that cannot accommodate conventional connectors. The whole series is divided into plastic shell version and metal shell version, with unified core electrical parameters and differentiated mechanical and environmental resistance parameters, which can meet the selection needs of different application scenarios. The detailed technical specifications are listed below, covering electrical performance, mechanical performance, environmental adaptability, structural parameters and soldering specifications.

1.1 Structural & Dimension Parameters

The connector features M5 standard external thread locking structure, with a thread diameter of 5mm, realizing quick locking and stable docking. The overall outer diameter of the connector is 5mm, the length of the plug body is 12mm-15mm (customizable), and the pin spacing strictly follows international miniature connector standards. The product is available in 2-core, 3-core, 4-core and 5-core pin configurations, covering most low-power signal and micro power transmission needs. The wire soldering terminal adopts an integrated forming structure, with a soldering terminal width of 1.2mm, which is compatible with 22AWG to 30AWG stranded copper wires. The plastic shell version adopts one-piece injection molding process, with no assembly gaps; the metal shell version adopts precision CNC machining process, with smooth thread and high matching accuracy, effectively avoiding loose docking and poor contact caused by thread deviation.

1.2 Electrical Performance Parameters

Rated current: 2A (2-3 core), 1.5A (4-5 core); Rated voltage: 30V AC/DC; Withstand voltage: 100V AC (50Hz, 1min, no breakdown and flashover phenomenon); Insulation resistance: ≥1000MΩ (normal temperature and humidity); Contact resistance: ≤10mΩ, ensuring low loss and stable signal transmission; Electrical life: more than 1000 times of plugging and unplugging without attenuation of electrical performance. The connector pins are made of high-purity copper alloy with gold-plated surface treatment, which effectively improves conductivity, oxidation resistance and corrosion resistance, avoiding signal delay, current fluctuation and circuit failure caused by pin oxidation and poor contact in long-term use.

1.3 Mechanical Performance Parameters

Plugging and unplugging force: 5N-15N, moderate force, convenient for manual assembly and maintenance, not easy to cause pin damage due to excessive force; Locking torque: 0.3N·m-0.5N·m, thread locking is firm and not loose; Vibration resistance: 10Hz-2000Hz frequency vibration, no disconnection and poor contact; Impact resistance: can withstand 1000m/s² instantaneous impact, suitable for equipment with slight vibration and impact in industrial operation. The metal shell version has higher structural strength, with anti-extrusion and anti-torsion performance significantly better than the plastic shell version, adapting to more complex mechanical environment.

1.4 Environmental Adaptability Parameters

Working temperature range: -40℃ to +85℃, supporting normal operation in high temperature, low temperature and alternating cold and hot environments; Storage temperature: -50℃ to +90℃; Humidity resistance: 95%RH (non-condensing) long-term work, no insulation degradation and metal oxidation; Waterproof grade: Plastic shell version reaches IP40, effectively preventing dust and splashing water; Metal shell version reaches IP65, fully dust-proof and resistant to low-pressure water splashing, suitable for outdoor and industrial wet environments. In addition, both versions have excellent anti-aging, anti-mildew and anti-corrosion properties, adapting to long-term outdoor and industrial environmental operation.

1.5 Soldering Process Parameters

Soldering temperature: 320℃-380℃; Soldering time: 2-3 seconds for single point soldering, avoiding high-temperature damage to the insulator shell; Compatible solder: lead-free tin solder, meeting EU environmental protection standards; Wire stripping length: 3mm-4mm, which is convenient for full soldering and firm wiring, effectively preventing virtual soldering, missing soldering and wire falling off.

The M5 series wire soldering aviation connector stands out in the miniature connector market relying on its ultra-compact structure, flexible material selection, simple assembly process and ultra-high stability. Compared with traditional crimping connectors and threaded connectors, this wire soldering type product has irreplaceable advantages in small-space installation, low-cost assembly and long-term stable operation. The dual-shell design of plastic and metal further enriches the product application dimensions, realizing full coverage of civilian, commercial and industrial scenarios.

2.1 Ultra-Compact Miniature Structure, Wide Space Adaptability

Adopting M5 ultra-small threaded design, the product has an extremely small volume and occupies almost no installation space, which perfectly solves the installation pain point of large-size connectors in miniature intelligent equipment. It is especially suitable for narrow internal space of sensors, wearable devices, miniature instruments and precision electronic modules. The integrated plug-in structure avoids the bulkiness of combined connectors, and the streamlined shell design not only improves the aesthetic degree but also reduces the risk of scratch and collision during equipment assembly and use.

2.2 Wire Soldering Design, Simple Assembly & Low Cost

Different from the traditional crimping connection mode that requires professional crimping tools, the M5 wire soldering aviation connector adopts direct wire soldering structure. Users only need simple electric soldering iron equipment to complete cable wiring assembly, without purchasing expensive special tooling, reducing the equipment investment cost of customers. The soldering terminal is designed with anti-off positioning, which is convenient for wire positioning during soldering, effectively improving assembly efficiency and yield. The whole assembly process is simple and easy to operate, no professional technical training is required, which greatly shortens the product production cycle and after-sales maintenance cycle.

2.3 Dual Shell Options, Scenario Customization

In order to meet the differentiated needs of different customers, we provide two mature shell solutions: plastic shell and metal shell. The plastic shell is made of high-performance PA66 engineering plastic, which has the advantages of light weight, low cost, good insulation, anti-aging and no electromagnetic interference. It is the best choice for indoor civilian equipment, consumer electronics and low-cost commercial products. The metal shell is made of high-quality copper alloy with anti-rust and anti-corrosion surface treatment, which has high structural strength, strong compression resistance, torsion resistance and vibration resistance. At the same time, the metal shell has excellent electromagnetic shielding performance, which can effectively isolate external electromagnetic signal interference and ensure stable signal transmission. It is widely used in industrial automation, outdoor equipment and high-precision detection instruments.

2.4 Stable Electrical Performance & Long Service Life

The connector contact pins are made of high-precision copper alloy and processed by thick gold plating technology, which has ultra-low contact resistance and excellent oxidation resistance. It can maintain stable conductivity and signal transmission accuracy after long-term plugging and unplugging and continuous power-on operation. The internal insulator adopts high-temperature resistant and high-insulation material, which can effectively avoid leakage current, short circuit and insulation breakdown caused by high temperature and humidity. The threaded locking structure ensures tight docking of the plug and socket, no loose contact during equipment vibration and movement, and the product service life is far higher than the industry average level.

2.5 Excellent Environmental Resistance & High Safety

The whole series of products have passed strict environmental adaptation tests, and can work stably in extreme temperature, high humidity, dust and splash water environments. All materials comply with RoHS, CE and other international environmental protection and safety certification standards, non-toxic and environmentally friendly, no hidden safety hazards. The plastic shell has flame-retardant properties, which can effectively prevent circuit combustion and improve equipment safety; the metal shell has good grounding performance, which can release static electricity and avoid static damage to precision electronic components.

With miniature size, flexible assembly, stable performance and diverse material options, M5 series wire soldering aviation connectors are widely used in precision electronics, intelligent sensing, industrial automation, medical equipment, smart home, automotive electronics and other fields, becoming a basic core connection component for miniature low-power equipment.

3.1 Intelligent Sensor Industry

It is the mainstream matching connector for various miniature sensors, including temperature sensors, humidity sensors, pressure sensors, proximity sensors, photoelectric sensors and micro displacement sensors. The ultra-small size is perfectly adapted to the miniaturization design of sensors, and the stable signal transmission performance ensures that the sensor data is accurate and real-time without delay and loss. The metal shell version can resist industrial field vibration and dust interference, suitable for factory automation sensor monitoring equipment; the plastic shell version is suitable for indoor environmental monitoring and civilian smart sensors.

3.2 Precision Instrument & Testing Equipment

Used for signal connection of portable testing instruments, miniature analytical instruments, optical detection equipment and experimental precision electronic modules. The low contact resistance and anti-interference performance can effectively avoid signal distortion and data error during equipment testing, ensuring the accuracy of experimental data and detection results. The lightweight and compact design will not increase the volume and weight of precision instruments, which is in line with the portable and miniaturized development trend of testing equipment.

3.3 Industrial Automation & Intelligent Equipment

Suitable for micro actuators, miniature solenoid valves, small industrial control modules, automated door control systems and low-power industrial auxiliary equipment. The IP65 waterproof and dustproof metal shell version can adapt to harsh industrial environments such as factory workshops, mechanical equipment operation sites, avoiding equipment connection failure caused by dust, water splash and vibration. The reliable locking structure ensures long-term stable operation of industrial equipment and reduces equipment failure rate and maintenance cost.

3.4 Medical & Health Equipment

Applied to miniature medical detection equipment, wearable health monitoring devices, portable medical auxiliary instruments and household medical equipment. The product is made of environmentally friendly and safe materials, with no harmful substances, meeting medical equipment safety standards. The stable and low-noise signal transmission performance ensures the accurate collection and transmission of human body monitoring data, and the small-size design is convenient for the lightweight design of wearable medical devices.

3.5 Smart Home & Consumer Electronics

Widely used in smart door locks, miniature smart sensors, wearable electronic devices, small smart lighting equipment and household intelligent control modules. The low-cost plastic shell version can effectively reduce the production cost of consumer electronic products, and the simple soldering assembly process improves the production efficiency of enterprises. The product has low power consumption and stable performance, meeting the long-term standby and operation needs of smart home equipment.

3.6 Automotive & New Energy Micro Equipment

Suitable for automotive miniature sensing modules, vehicle-mounted small intelligent equipment, new energy vehicle low-power auxiliary circuits and automotive interior electronic components. The product can withstand temperature changes and slight vibration in the vehicle environment, with strong environmental adaptability, ensuring stable operation of vehicle-mounted electronic equipment in different driving environments.

Q1: What is the difference between plastic shell and metal shell M5 wire soldering connectors? How to choose?

The core electrical parameters of the two versions are completely consistent, and the main differences lie in shell material, protection level, shielding performance and application scenarios. The plastic shell version is light in weight, low in cost, good in insulation and free of electromagnetic shielding, with IP40 protection level, which is suitable for indoor static environments such as smart home, consumer electronics and indoor sensors. The metal shell version has high structural strength, anti-vibration, anti-extrusion and anti-corrosion capabilities, with IP65 protection level and excellent electromagnetic shielding function, which is suitable for industrial sites, outdoor equipment, automotive electronics and high-precision equipment that need anti-interference and harsh environment resistance. Customers can choose according to equipment use environment, cost budget and anti-interference requirements.

Q2: What wire specifications are compatible with M5 wire soldering connectors?

This series of connectors is compatible with 22AWG to 30AWG standard stranded copper wires, which covers most specifications of miniature signal wires and low-power power wires. The recommended wire stripping length is 3-4mm, which can ensure full contact and firm soldering. It is not recommended to use too thick wires to avoid poor soldering and assembly jamming, nor too thin wires to avoid wire breakage and virtual soldering.

Q3: What is the maximum working temperature of the connector? Can it work in high-temperature industrial environment?

The long-term working temperature range of M5 series connectors is -40℃ to +85℃, which can meet the working needs of most industrial and civilian equipment. The high-temperature resistance of metal shell and plastic shell is consistent. For industrial environments with long-term temperature higher than 85℃, we recommend selecting high-temperature customized versions to avoid aging and deformation of insulating materials affecting product performance.

Q4: Does the product support customized pin count and length?

Yes. Our M5 wire soldering aviation connector supports personalized customization, including pin core number (2/3/4/5 core), plug body length, cable length, surface treatment and special environmental resistance customization. We can provide one-stop customization services according to customers' equipment size, circuit design and application environment requirements, and support small-batch customized orders.

Q5: Are the products compliant with international certification standards?

All our M5 series wire soldering aviation connectors have passed CE, RoHS international certifications, and meet EU environmental protection and safety standards. The products adopt standardized production processes, with stable quality and full compliance with export trade requirements, which can be safely sold and used in global markets such as Europe, America, Southeast Asia and the Middle East.

Q6: What is the production lead time and after-sales service policy?

For standard in-stock models, we can complete delivery within 3-5 working days; for customized products, the lead time is 7-15 working days according to the customization difficulty. We provide 12-month quality warranty service for all products. During the warranty period, if there are quality problems caused by non-human damage, we support free replacement and after-sales maintenance. We have a professional technical team to provide 24-hour online technical consultation and problem-solving services.

Q7: Is the wire soldering process difficult? Does it need professional equipment?

The soldering assembly process of this product is simple and low-threshold. Ordinary constant-temperature electric soldering iron can meet the assembly needs, without special crimping equipment and professional tooling. The soldering operation can be completed by ordinary assembly workers after simple training, with high assembly efficiency and low defective rate, which is very suitable for mass production and manual maintenance.

We are a professional manufacturer focusing on the R&D, production and sales of miniature circular aviation connectors, with rich production experience and mature technical system in M5, M8, M12 and other series of connectors. We adhere to the product concept of "high precision, high stability and high cost performance", and provide global customers with standardized connector products and personalized customized solutions.

In addition to standard M5 wire soldering aviation connectors (plastic/metal shell optional), we also support various structural customization, parameter adjustment and package customization. Our products are exported to more than 50 countries and regions around the world, and have won long-term trust and praise from customers in industrial automation, intelligent electronics, medical equipment and other industries with stable quality and professional service.

If you have product consultation, sample testing, batch procurement, customized development and other needs, please feel free to contact our professional sales and technical team at any time. We will provide you with free product samples, detailed parameter datasheets, professional solution design and one-stop after-sales service to help your projects reduce costs, improve efficiency and stabilize quality.