PTH Bent Pin, Spring-loaded Pin Description:
Mechanical parameters:
Stroke: Standard stroke from 0.10mm to 5.00mm, providing different spring forces.
Contact force: Provides a constant contact force of 15gf to 300gf at rated stroke, with low contact resistance and mechanical stability.
Lifespan: >10,000 compression cycles, performance degradation <10%.
Barrel diameter: ranging from 0.50mm to 5.00mm, CNC precision cutting and high-precision brass beryllium copper, with strict tolerances for roundness and straightness.
Spring-load pin: 90° bent L-shaped tail pin, compatible with through-hole diameter of 0.50mm~1.50mm, bending accuracy of ±0.10mm.
Electrical parameters:
Rated current: up to 50A.
Contact resistance: <20mΩ, initially stable throughout its lifecycle.
Insulation resistance: made into pogo pin connector, insulation resistance >100MΩ.
Voltage resistance: 500 VAC for one minute.
Contact material: Gold plating (0.125μm~3μm Au over 4μm Ni), optional palladium alloy.
Professional functional applications + key performance + compatibility:
Core function: Provide stable compression connections between boards or modules within a limited space. Perfectly solve the connection reliability problem under tolerance accumulation and vibration environment.
Key performance: extremely low and stable contact resistance, high wear-resistant gold plating layer, ultra-long mechanical life, precise spring force stroke curve.
Compatibility: Spring-loaded pin pitch and compatibility with industry standards, repeated plugging, testing, or PCB assembly with dynamic motion.
Johoty’s core values:
Engineering level consistency: From precision CNC lathes to electroplating, ensure mechanical and electrical parameters of each spring-load pin are highly consistent. Meet the requirements of SMT automated assembly and high reliability design. Achieving the ultimate balance between performance and cost.
Customized agility: Quickly respond to engineering prototypes and batch requirements for non-standard stroke, spring force, dimensions, or coating requirements.
Uncompromising reliability: Under strict price pressure, we insist on using high-performance spring materials and gold plating processes. Johoty’s spring load pin has high signal integrity and connection reliability throughout its lifecycle. This directly benchmarks the performance of top tier brands.
Challenges and Solutions of PTH Bent Pin, Spring-loaded Pin
Spring-loaded pin achieves ultimate balance between mechanical precision and durability
Challenge: The 90° bend is the point of mechanical stress concentration. Under repeated insertion and long-term vibration, the bent root is prone to fatigue cracking and loose pins, leading to contact failure. What engineers need is reliability that never bends.
Johoty’s solution: integrated bending and materials science
Process: Adopting precision in mold bending or cam assisted forming technology to ensure the formation of internal compressive stress zones at the bending corners. It’s not just about external bending, fundamentally eliminating microcracks.
Material: Barrel is made of high yield strength beryllium copper C17200, which is subjected to age hardening treatment after bending. Increases the strength and fatigue life of the bending area by more than three times, comparable to military standards.
Stable ultra-low contact resistance of spring-loaded pin
Challenge: Signal integrity and power transmission require extremely low contact resistance that remains stable throughout the entire product life. The attenuation of spring force, wear or contamination of barrel/barrel coating can all cause a surge in resistance, resulting in signal attenuation or voltage drop.
Johoty’s solution: precious metal coating and precise spring force control
Electroplating: Provides selective gold plating solutions. The inner walls of the plunger tip and barrel are made of hard gold with a thickness of 0.50µm or more, which is wear-resistant and has low resistance. The barrel and bending parts are made of palladium nickel alloy as the base and rust proof gold. Johoty optimizes costs while ensuring performance.
Spring force: The spring is made of high fatigue life piano steel wire, Inconel or Elgiloy alloy. Perform 100% elasticity curve testing on a constant stress tester. The elasticity attenuation rate remains below 10% even after 100,000 insertions and removals.
Spring-loaded pin for performance consistency in harsh environments
Challenge: The product needs to work in corrosive environments, high temperature/humidity, or. Worried about blistering of the coating, oxidation of pogo pins, and failure of spring force due to temperature changes. Resulting in the failure of the entire batch of Spring loaded pins in reliability testing.
Johoty’s solution: rigorous process control and environmental simulation testing
Process control: From turning, bending to electroplating, the entire process is carried out in a dust-free workshop to prevent particle pollution. Add plasma cleaning before electroplating to ensure coating adhesion.
Reliability verification: Each batch of Spring loaded pins provides a third-party authoritative test report, including:
- Salt spray test: No corrosion after 96 hours.
- High temperature and high humidity test: 85°C/85% RH, contact resistance change rate <5% after 500 hours.
- Thermal shock test: -55°C to 125°C, 200 cycles, no performance failure.
Why Choose Johoty’s PTH Bent Pin, Spring-loaded Pin?
Johoty’s bent spring-loaded pin has 30°, 45°, 90° tail pin, flexible custom. Johoty is trustworthy!
Benefits of PTH Bent Pin, Spring-loaded Pin
Design freedom and integration:
Requirement: Engineers need to understand the limits of Johoty’s customized spring-loaded pin stroke, current load, and external dimensions. And the precision and consistency control ability of tail pin 90 degree bending.
Benefit: Achieve innovative design with high density and limited three-dimensional space. The traditional vertical installation of pogo pins takes up space in the vertical direction of the PCB board. The tail pin is designed with a 90 degree bend, allowing connections to be horizontally led out from the bottom or side of the board. Greatly freeing up valuable space above the PCB board. To stack other modules, heat sinks, or achieve a thinner product form.
Challenge: Implement a mechanical layout for reliable electrical connections in extremely compact micro drones, high-end medical devices, and wearable devices. Engineers often need to make difficult trade-offs between performance, volume, and reliability to solve the core contradiction of space.
Signal integrity and power integrity:
Requirement: The thickness of the gold plating layer used by Johoty, the elasticity and conductivity of beryllium copper alloy. The electromagnetic characteristics of internal springs and how to optimize these parameters through customization. To minimize contact resistance and inductance.
Benefit: Provide stable, low loss, and low-noise electrical connections. Spring loaded pins maintain impedance stability and reduce signal reflection and attenuation in high-speed or analog signals. On the power supply, extremely low contact resistance can reduce voltage drop and heat generation, and improve energy efficiency.
Challenge: Solve signal distortion and power noise caused by connector performance bottlenecks in RF modules and high-speed data processing units of high-speed circuits. This is the key to ensuring final product meets their predetermined performance indicators. Avoiding complex debugging and rework caused by connection issues in the later stages of the project.
Long term reliability and durability:
Requirement: Understand the cycle life of Johoty products and their ability to maintain performance under different temperatures, humidity, and vibrations. And the protection level against corrosion and oxidation.
Benefit: Ensure the reliability of spring loaded pins throughout their entire lifespan and reduce on-site failure rates. This is crucial for equipment that requires frequent maintenance, operates, or repair in harsh environments. The customized spring loaded pin must have the same mechanical strength as the barrel to avoid becoming a fatigue fracture point.
Challenge: Solve the challenge of zero failure of connectors for high-value, long-life industrial automation equipment, testing and measuring instruments, and aerospace equipment. A single connection failure can cause the entire system to crash, resulting in significant maintenance costs and reputation damage. Engineers can trust the durability of every spring loaded pin.
Supply chain resilience and collaborative efficiency:
Requirement: Engineers need to understand the process efficiency of Johoty as a Chinese manufacturer when responding to customized requirements. The speed from design to sampling to mass production, as well as the capacity flexibility to cope with demand fluctuations.
Benefit: Obtain rapid prototyping support and stable mass production supply, accelerate research and development cycles, and ensure production continuity. Flexible customization services allow engineers to quickly obtain matching spring loaded pins for verification during design iterations. Never compromise design for the mismatch of standard parts.
Challenge: Solve the project delay risk challenges caused by the continuous shortening of R&D cycles and unstable supply chains. Engineers often face long lead times for purchasing standard parts or inability to meet specific requirements. A customized Johoty that can respond quickly and collaborate deeply can directly determine whether a customer’s product can be launched on time. Ensure that there is no shortage of spring loaded pins in subsequent production.
PTH Bent Pin, Spring-loaded Pin Applications
Robotics
Challenge: The electrical connections in the robot system need to remain stable during complex movements, and any small mistake can lead to system failure.
Function: Johoty’s spring-loaded pin can cope with frequent movements and vibrations in robot systems, and the connection does not fail.
Customized solution: Customize spring-loaded pin to ensure long-term efficient connection of the robotic system.
Challenge solved: High durability design, very stable connection under high motion and vibration conditions.
Efficiency improvement/cost savings: Improved the operational stability of the robot system, reduced malfunctions and maintenance costs.
Advantages: Vibration resistance, high stability, spring-loaded pin ensure continuous and efficient operation of robots in complex environments.
Test equipment
Challenge: High precision electrical connections adapt to frequent replacement and adjustment of equipment.
Function: Johoty’s spring-loaded pins can provide precise and stable electrical connections, adapting to frequent plugging and unplugging operations.
Customized solution: Customize spring-loaded pin suitable for different testing equipment to maintain stability over prolonged use.
Challenge solved: High frequency operations will not affect the connection quality, meeting the device’s requirements for accuracy.
Efficiency improvement/cost savings: reduces testing errors caused by poor contact of spring-loaded pin, improving testing efficiency.
Advantages: Precise and stable, suitable for high-frequency operation, spring-loaded pin greatly improves the performance of testing equipment.
Intelligent Home Furnishing system
Challenge: Requires frequent connections and disconnections, traditional connection methods cannot maintain stability for a long time.
Function: Johoty’s spring loaded pins provide stable support for frequent electrical connections, ensuring long-term, fault free operation of the equipment.
Customized solution: Customize spring loaded pins that meet your needs to ensure efficient and reliable smart home devices.
Challenge solved: Design a spring pressure of 250gf to address common contact issues in smart home systems.
Efficiency improvement/cost savings: Improve equipment reliability, reduce after-sales maintenance and replacement costs.
Advantages: Efficient connectivity design enhances the overall quality and consumer experience of smart home products.
Aerospace applications
Challenge: During extreme temperature differences and vibrations, the connecting parts often fail due to environmental factors.
Function: Johoty’s spring-loaded pin can maintain reliable electrical connections under extreme conditions, ensuring stable equipment operation.
Customized solution: Tailor made spring-loaded pin for spacecraft to adapt to temperature differences and vibrations, which can work normally under various extreme conditions.
Challenge solved: Through specialized design, the spring-loaded pin is not affected by temperature and vibration, ensuring the stability of the spacecraft.
Efficiency improvement/cost savings: Reduce equipment failures and maintenance costs, and improve the reliability of aerospace equipment.
Advantages: Adaptable to extreme environments, high reliability, Johoty’s spring loaded pin can meet the stringent requirements of aerospace.
Electric vehicle battery connection
Challenge: The battery system requires extremely high reliability for connections, and in high current transmission, overheating or circuit breaks are common.
Function: Johoty’s spring-loaded pin provide precise spring pressure and long-lasting stable electrical connections, preventing overheating or circuit breakers.
Customized solution: Customize spring-loaded pin based on the battery pack, ensuring stable current and maximizing efficiency.
Challenge solved: Accurate mechanical design ensures stable connection of spring loaded pins even under high loads.
Efficiency improvement/cost savings: The charging efficiency of the battery is high, the battery life is long, and the replacement frequency is reduced.
Advantage: The spring-loaded pin is resistant to high current and high temperature, ensuring the safety and efficiency of the battery system.
Consumer electronics products
Challenge: Consumers have extremely high requirements for the appearance and functionality of electronic products, and the connecting parts need to be efficiently connected within a limited space.
Function: Johoty’s spring-loaded pin provides sturdy and reliable electrical connections in small spaces, ensuring high device stability.
Customized solution: Customize suitable spring-loaded pin that balance space constraints and functional requirements.
Solving the challenge: In highly integrated electronic devices, the connecting parts can withstand external pressure and impact.
Efficiency improvement/cost savings: Reduce the failure rate caused by poor connections, improve the overall quality and user experience of the product.
Advantages: Spring-loaded pin is compact and efficient, capable of adapting to various design requirements and enhancing product competitiveness.
Industrial automation equipment
Challenge: Electrical connections often suffer from poor contact due to high-frequency use and environmental complexity.
Function: Johoty’s customized spring-loaded pin can adapt to various electrical contact requirements, ensuring smooth equipment operation.
Customized solution: Design spring-loaded pin that is compatible with each device, with high-precision connections to reduce intermittent contact issues.
Solving the challenge: By optimizing the reliability of the connection, the device can continue to operate stably in harsh environments.
Efficiency improvement/cost savings: reduced equipment failures and downtime, optimized maintenance costs.
Advantages: Customized spring-loaded pin can meet different automation needs, improving the overall reliability and efficiency of the system.
Medical equipment connection
Challenge: Often faced with stable electrical connection requirements, poor contact may lead to malfunctions during high-frequency use.
Function: Johoty’s 90 degree bent spring-loaded pin provides stable connection, and long-term use of current and signal is very stable.
Customized solution: Customize spring-loaded pin for specific devices, optimize size and elasticity, and ensure secure and reliable connections.
Challenge solved: With precisely designed spring-loaded pin, the device can maintain efficient connectivity even under prolonged operation or vibration.
Efficiency improvement/cost savings: reduces the frequency of failures caused by unstable connections and lowers maintenance costs.
Advantage: Spring-loaded pin has automatic compensation function, which can effectively cope with wear and vibration, and extend the service life of the equipment.
Advantages of PTH Bent Pin, Spring-loaded Pin
Customization flexibility and design freedom of Johoty’s spring-loaded pin
Solved engineer challenge: Standardized connector components often force system architecture to compromise around connectors, limiting innovation. Engineers crave a solution that can perfectly adapt to their unique design, rather than constraining the design in reverse.
Johoty’s solutions and advantages:
Flexible customization is the core of Johoty. What we offer is not just a spring-loaded pin, but an engineering service. Comprehensive parameter customization: stroke, elasticity, current, working temperature, and material (beryllium copper, phosphor bronze, gold/palladium/platinum/tungsten/ruthenium) can be customized according to needs.
Geometry and layout optimization: the angle and position of tail bending, as well as the arrangement of multiple pogo pins within the connector. Johoty can optimize the design according to your specific PCB layout and spatial form. Help you achieve optimal wiring and heat dissipation.
Collaborative design partner: Johoty’s CFT team is willing to intervene early in your project as an extension of your design team. Jointly develop spring-loaded pin that best meets your requirements on electrical, mechanical, and environmental.
Johoty’s spring-loaded pin boasts excellent electrical performance and signal integrity
The engineer challenge to be solved is that impedance discontinuity, parasitic inductance, and capacitance on the connection path can cause signal reflection, jitter, and attenuation. Seriously affecting the performance of digital signal systems. The long path and complex structure of traditional top pins are potential bottlenecks for signal integrity.
Johoty’s solutions and advantages:
Shortening signal path and reducing inductance: Spring-loaded pin can achieve shorter and more direct signal transmission. Johoty can precisely control the geometry, pin length, and bending radius of spring-loaded pin. This can minimize parasitic inductance and capacitance.
Controllable impedance design: For high-frequency applications, Johoty can customize the diameter, spacing, and insulation material of spring-loaded pin. It can match the characteristic impedance of PCB transmission lines of 50Ω, 90Ω, and 100Ω. Minimize signal reflection and distortion at connection points to the greatest extent possible.
Value to engineers: Providing a low loss, high integrity connection for your RF, high-speed digital (PCIe, DDR), or microwave circuits. The system has high data accuracy and stability during high-speed operation.
Exceptional mechanical stability and anti-vibration performance of spring-loaded pin
Solved engineer challenges: Often come from automotive electronics, industrial automation, aerospace, and outdoor communication equipment. Continuous mechanical vibration, impact, and thermal cycling often lead to connection failure. Connectors installed vertically may experience slight wear and even detachment under vibration.
Johoty’s solutions and advantages:
The through-hole installation combined with a 90 degree bent tail provides unparalleled mechanical stability.
Strong welding adhesion: The bent tail is welded through through-hole technology, and the welding point area and strength are much larger than those of surface mount devices. Solder can form a strong 360 degree package inside the hole through capillary action, with extremely high tensile and shear strength.
Eliminating leverage effect: Unlike the leverage effect that causes solder joints to detach due to lateral forces on vertical connectors. The force direction of the 90 degree bending design is more directly transmitted to the sturdy through-hole solder joints, preventing connector loosening or detachment caused by vibration.
Value to engineers: Enhance the connection reliability and lifespan of products under harsh working conditions, and reduce on-site failure rates. Meet the strictest automotive and industrial reliability standards.
Ultimate spatial optimization and 3D interconnection capability of spring-loaded pin
Solved engineer challenges: In foldable devices, multi board stacking systems, and drone flight control, valuable Z-axis space is extremely limited. Traditional vertical connectors force PCB boards to reserve space for their travel and body height. This will seriously constrain the miniaturization and thinning of engineer products.
Johoty’s solutions and advantages:
The 90 degree bent tail of the spring-loaded pin allows for connection within the PCB plane (X-Y direction). Realize a paradigm shift from vertical interconnection to horizontal interconnection.
Release Z-axis space: The connection does not require occupying the vertical height between boards, and engineers can install two PCBs in a nearly snug manner. Reduce the overall module thickness to gain millimeter or even micrometer level space for product design.
Implement 3D wiring: The bent tail pin of the spring-loaded pin is installed through a through-hole. It can form a stable and reliable connection with laterally connected daughter boards, flexible circuit boards, or another connector on the same plane. Engineers can greatly enhance the flexibility of system layout.
Value to engineers: You no longer need to sacrifice structural design for the travel of spring-loaded pin. This provides you with a reliable and high-performance lateral connection option when pursuing the ultimate compact product architecture.
FAQ
Challenge: Engineers need to achieve high reliability connections within a limited space. However, bending structures are prone to fatigue fracture due to vibration or insertion and extraction stress.
Solution:
- Adopting an integrated precision molding process to avoid weaknesses caused by welding or splicing.
- Bending radius based on material yield strength simulation optimization: usually ≥ 0.30mm, tested through 10,000 insertion and extraction cycles.
- Provide options of stainless steel 17-7PH or 316L to balance toughness and corrosion resistance.
Challenge: Mounting tilt can cause fluctuations in contact impedance or interference with adjacent components, affecting high-density stacking designs.
Solution:
- The pin positioning column and PCB through-hole adopt a transitional fit design, and the verticality after installation is ≤ 0.10mm.
- Provide a 3D stepped STEP model that supports pre assembly interference analysis.
- It is recommended to use reflow soldering fixtures for fixation to avoid process deviation.
Challenge: Excessive elasticity can damage the solder pads, while insufficient elasticity can lead to contact failure. The spring-loaded pin needs to be accurately matched with the application scenario.
Solution:
Linear range of elasticity stroke curve: strictly limited within 70% of the total stroke to avoid sudden stress changes at the end of the spring-loaded pin.
Provide dynamic impedance monitoring data: ΔR<10mΩ and stable current during plugging process.
Support customization of multiple spring configurations: Double coil springs, spring-loaded pin achieve precise elasticity of 50g-300g within a 2.00mm stroke.
