Description of Through Hole Pogo Pins
Specifications:
Current/Voltage: Standard 1-3A, maximum high current up to 50A.
Contact resistance: <20mΩ (typical value).
Working life: 10,000-500,000 cycles (depending on the series and load).
Spring force: precise to the point of force, ≥5gf.
Barrel/plunger material: Beryllium copper alloy, brass, gold-plated (usually 5-50μin gold covering 150μin nickel substrate).
Spring material: Beryllium copper, SWP-B, SUS631, etc.
Insulator: can form pogo pin connector, high-temperature PPS, LCP, PEEK, high temperature resistance (>200°C), low moisture absorption.
Solder tail pin: Standard solderable coating, compatible with SnPb and Pb-free reflow soldering processes.
Functional applications + key performance + compatibility:
Functional application:
PCB to PCB connection: Male and female connections, replace board-to-board connectors in stacked or sandwich PCBs to save space.
Modular testing/burning: the core connecting components of ICT and FCT fixtures.
High reliability power transmission: providing low loss connections for calculations and RF applications that require high current.
Harsh environment connection: resistant to vibration and impact, suitable for industrial, automotive, aerospace applications.
Key Performance:
Extremely low and stable contact resistance: high signal integrity and power efficiency.
Ultra-long mechanical lifespan: providing excellent durability for automated testing and production.
Accurate elasticity and stroke: ensuring consistent contact and preventing excessive impact on the welding pad.
Excellent coatings and materials: corrosion-resistant, wear-resistant, and maintain long-term contact reliability.
Compatibility:
PCB design: Standard through-hole design, compatible with automatic plug-in machines, high solder strength, providing precise PCB packaging recommendations.
Welding process: Fully compatible with the processes of wave soldering and modern SMT reflow.
Industry standard: Size and performance benchmark against international mainstream brands, providing direct replacement options.
China Manufacturer: Johoty’s Core Values
Engineering level customization capability: core advantage. Can quickly respond and provide deep customization for stroke, elasticity, current, and external dimensions.
Vertical integration and cost control: full process control from raw materials (precision lathes, electroplating) to through hole pogo pins. High consistency and competitive prices, without trader premium.
Technical support response speed: Provides direct communication with the factory to quickly solve technical problems without NRE costs.
Quality benchmarking high-end: The production system adopts ISO 9001. Through hole pogo pins, aiming for performance and reliability that even surpasses international first-line brands. It is an ideal choice for seeking high-end alternatives or cost optimization without sacrificing performance.
Catalogs of Through Hole Pogo Pins
Challenges and Solutions of Through Hole Pogo Pins:
Signal Integrity: Impedance Control and Stability in High Frequency Applications
Engineer Challenge: In high-speed digital or high-frequency RF testing, testing accuracy is often severely constrained. Due to the asymmetric structure and long path of traditional connectors, impedance discontinuity, signal reflection, and attenuation occur.
Johoty solution: Johoty’s through hole pogo pins are designed with a coaxial structure. By integrating an insulation layer and an outer grounding sheath inside the barrel, a controllable micro coaxial line is formed. This structure can provide precise impedance matching (such as 50Ω). Minimize signal integrity issues to ensure stability and purity of high-frequency signal transfer.
Power Carrying: Thermal Management and Low Resistance under High Current Transmission
Engineer Challenge: When burning or testing electric vehicle battery packs and high-power ICs, high currents can cause pogo pins to heat up. Causing resistance drift, voltage drop, and even failure due to overheating.
Johoty solution: Johoty uses highly conductive gold-plated beryllium copper or brass to optimize the internal spring structure and spring material. Achieve extremely low contact resistance and circuit resistance. Our high current pogo pins increase the current carrying cross-sectional area and optimize the heat dissipation path, which can stably carry a current of 50A. During the high-power test of the customer, there is no attenuation of performance and no interruption of connection.
Mechanical lifespan and solder joint reliability: durability under high cycling and PCB stress
Engineer Challenge: Automated testing equipment requires at least 100,000 stable cycles. Ordinary pogo pin springs are prone to fatigue. Moreover, through-hole welding is prone to cracking under repeated mechanical stress, leading to connection failure.
Johoty solution:
Ultra long mechanical life: Adopting precise spring design and high-quality material SUS631. After 200,000 compression cycles, the elasticity remains within strict tolerance range.
Strengthening the reliability of solder joints: The pin tail through-hole adopts a stepped or grooved anchoring design. Greatly increases the contact area with solder and mechanical locking force. This can effectively absorb and disperse the stress caused by PCB board bending or testing insertion and extraction, fundamentally preventing solder joint cracking.
Why Choose Johoty’s Through Hole Pogo Pins?
Johoty’s through hole pogo pins have >50k models, flexible custom of stroke, length, etc. Johoty is trustworthy!
Benefits of Through Hole Pogo Pins
Engineer’s challenge: It is difficult to balance ultimate performance and project cost under budget constraints.
Johoty’s solution: providing high-end performance through hole pogo pins at affordable prices.
Benefits: Engineers are often limited by the high prices of big brands, especially when project budgets are tight. Johoty has optimized production processes and a long-term reliable supply chain. We provide the best cost-effectiveness ratio without sacrificing performance and quality. Engineers can choose the most reliable through hole pogo pins within the budget. Even the saved costs can be invested in other more critical parts of the product.
Engineer’s challenge: Faced with unique application scenarios, it is difficult to obtain fast, professional, and flexible customized support.
Johoty’s solution: providing customized engineering partnerships for deep collaboration.
Benefits: Standard components often cannot meet all the needs of innovative designs. For example, the special shape, elastic curve, size, or installation method of through hole pogo pins. The communication process with international giants is cumbersome and time-consuming. Johoty’s CFT team is able to quickly understand requirements like an internal extension team. Provide professional advice and ensure the delivery of the prototype within 2 weeks. This can greatly accelerate the development and iteration cycle of engineers’ products.
Challenge: Ensure high stability and consistency in quality during mass production.
Johoty’s solution: Implement a data-driven through hole pogo pins full process quality control system.
Benefits: For high-end devices, the failure of any connector can cause the entire system to malfunction. The engineers are most concerned about the quality fluctuations between batches of through hole pogo pins. Johoty’s strict quality control system and 23 inspections provide quality assurance that is equivalent to or even more transparent than international brands. This zero compromise quality concept allows engineers to have peace of mind when putting designs into mass production.
Challenge: Dealing with the risk of supply disruptions and delivery delays caused by unstable global supply chains.
Johoty’s solution: Building a reliable, agile, and resilient supply chain.
Benefits: In recent years, global supply chain fragility has been exposed. There are significant risks to overreliance on a single region or brand in the supply chain. By using Johoty as your primary or secondary supplier, you can obtain competitive prices. You can build a more resilient through hole pogo pins supply chain. Stable production capacity and efficient logistics within 5-8 days ensure the smooth execution of customer production plans. Johoty is definitely a key strategic choice to ensure your project delivery timely and safe.
Applications of Through Hole Pogo Pins
EV battery module/BMS end (EOL testing and maintenance interface)
Challenge: High current, slight misalignment, coexistence of vibration and temperature rise.
Function: Through hole pogo pins can carry a larger fixed current, with low contact resistance and stable cycle life.
Customization: Plunger tip shape (concave head/crown teeth/cone), stroke/elasticity, ≥10-50µin gold layer, salt spray resistance.
Solution: ± 0.50-0.70mm blind insertion tolerance, reduced hotspots, and more reproducible test contacts.
Efficiency/Cost: EOL cycle time +15-25%, rework for poor contact -30-50%, fixture maintenance interval x 2.
Advantages: Compared to SMT spring loaded pins/leaf springs, through hole pogo pins have higher drawing strength. Higher current carrying capacity, and smaller long-term resistance drift.
Medical handheld diagnostic equipment (can be disinfected and docked/seated)
Difficulties: repeated disinfection (IPA/hydrogen peroxide), body fluid contamination, and stability of microcurrent signals.
Function: Low contact resistance and self-cleaning stroke, maintaining mV level signal integrity.
Customization: Medical grade electroplating system, sealing ring/IP protection, high temperature and high humidity cycle verification.
Challenge strike: After disinfection, it can be plugged in immediately, with low noise and reduced shaking caused by subtle movements.
Quantification: Contact stability duration+2-3 times, NFF (no fault detection) rate, return inspection -20-35%.
Comparison: Compared to USB/magazine holders, it has higher cleaning capacity and lifespan cycle, and more controllable plugging and unplugging force.
Industrial robot end tool quick change (signal+power)
On-site issues: oil pollution, dust, eccentric insertion, and periodic impact.
Professional role: Elastic tracking of stroke absorption deviation, maintaining on/off and contact pressure.
Customization options: dust cap, bold barrel/high spring force, positioning chamfer, anti vibration structure.
Engineering benefits: Through hole pogo pins can still be powered on and communicate without manual alignment.
Indicator: Average changeover time -20-40%, contact life+50-100%, reduced downtime loss.
Advantages: More resistant to impact and contamination than hard docking with multiple needle sockets, and maintenance does not require specialized fixtures.
Wearable/IoT device base charging (sweat/salt spray)
Challenges: salt spray corrosion, unstable low current trickle charging, and extremely limited appearance space.
Role: Miniature through hole pogo pins that serve both structural positioning and conductivity.
Customization: Miniature appearance, hydrophilic/hydrophobic coating, low elasticity curve matching lightweight shell.
Direct problem: It can still be charged after sweating, with low wear and reduced probability of accidental insertion.
Quantification: After 48-96 hours of salt spray, the contact resistance stabilizes, and the charging contact failure rate is -60-80%.
Comparison: Magnetic terminals have controllable cost and volume, and a higher tolerance for alignment deviation.
Automotive ECU/ADAS/Entertainment EOL & Burn
Main challenges: high concurrency fixtures, long-term programming stability, and temperature drift.
Function: Low impedance and low-noise contact, stable support for UART/CAN/FlexRay/Ethernet burning and calibration.
Customization: Specialized cutting-edge geometry, differential symmetrical layout, high-temperature resistant plastic encapsulated bracket.
Solution checklist: Decrease in false positive testing, decrease in high-speed link error rate, and minimize the impact of thermal drift.
Quantification: Yield+0.8-1.5 pp, cycle time+10-20%, fixture life x 2.
Advantages: It is more resistant to repeated insertion and closure than fixed needle sockets/rows, and can be replaced at a single point with simple maintenance.
Drone/AGV battery hot swapping and load compartment docking
Challenge: Micro vibration+impact, quick battery replacement, outdoor dust and moisture.
Role: Johoty’s through hole pogo pins with large stroke and high elasticity, short-term high current and misalignment buffering.
Customization: High conductivity beryllium copper brass, thick gold-plated, guide post/horn mouth, quick change and foolproof.
Solution: No power loss during takeoff and landing vibrations, wider action window for replacement, and reduced jamming.
Quantification: Reduce battery replacement time by 30-45%, decrease peak contact heating by 15-25%, and reduce downtime due to faults by 20-35%.
Advantages: Compared to blade/spring contacts, it has better vibration resistance and maintainability, and less wear debris.
Communication/Server Rack Blind Insertion Maintenance Port (Hot Plug Service Position)
Difficulties: blind insertion, multiple maintenance, rack airflow dust.
Function: Guidance + elastic compensation, through hole pogo pins can maintain contact stability and repeatability.
Customization: long guide end, low profile through hole pogo pins, wear-resistant coating, insulation partition.
Solution: Front end maintenance does not require disassembly, and positioning deviation does not affect short-term connectivity.
Quantification: Maintenance duration -25-35%, contact related failure rate -40-60%.
Advantages: Compared to board to board sockets, it has a larger tolerance and can replace through hole pogo pins at damaged points, increasing rack availability.
PCBA ICT/FCT/programming fixture (high-density parallel through hole pogo pins)
Realistic challenges: dense testing points, tiny solder pads, needle marks, and warping.
Function: Achieve low damage and low shaking contact with controllable elasticity and travel.
Customization capability: ultra-fine needle diameter, low elasticity curve, thrust sleeve, solder residue resistant plunger tip.
Direct appeal: Through hole pogo pins have shallow needle marks, high repeatability, and tolerance for warped boards.
Efficiency/Cost: Fixture needle changing cycle × 1.5-2, false failures reduced by 30-50%, single board testing time -10-15%.
Relative: Shorter circuit and lower contact resistance compared to the probe+adapter solution, making maintenance faster.
Advantages of Through Hole Pogo Pins
Extraordinary mechanical stability and torque resistance
Challenge: Traditional SMT or press fit top pins pose a risk of solder joint cracking or PCB hole damage when subjected to lateral stress or insertion torque.
Johoty solution and advantage: Through hole pogo pins penetrate the PCB and form a 360° solder ring with the through holes through wave soldering or selective soldering. This structure provides mechanical locking force far beyond surface mount. Johoty’s through hole pogo pins can withstand extremely high insertion and extraction times as well as unexpected lateral forces. Completely eliminate connector failure caused by mechanical stress.
Through hole pogo pins with extremely high current carrying capacity and excellent thermal management performance
Challenge: When testing high-power batteries and burning power modules, heating at the connection points is a key bottleneck. The current carrying capacity and heat dissipation path of SMT pads are limited.
Johoty Plan:
Low impedance: Solid through hole pogo pins provide low impedance, continuous current.
Efficient heat dissipation and advantage: Through hole pogo pins act as heat sinks, efficiently conducting the heat generated inside the barrel to the inner ground plane of the multi-layer PCB through through-hole solder joints. They can significantly reduce thermal resistance, ensure controllable temperature rise under high current, and double system stability.
Unparalleled PCB stacking alignment accuracy and stability
Challenge: In multi board stacking or blind plug matching applications, small fluctuations in connectors can cause misalignment, leading to short circuits or open circuits.
Johoty solution and advantage: The through-hole installation of pogo pins provides almost absolute positioning accuracy. The tight fit between pins and PCB holes eliminates the risk of reflow soldering offset in SMT processes. This provides a rock solid benchmark for high-density, multi connection point board to board or board to device connections. Johoty’s through hole pogo pins ensure precise and error free matching every time.
The ultimate reliability of through hole pogo pins for adapting to harsh environments
Challenge: Fatigue failure of SMT solder joints is the main failure mode in environments with vibration, impact, and temperature fluctuations.
Johoty solution and advantage: The metalized hole filling structure formed by through-hole welding provides the strongest resistance to vibration and impact through hole pogo pins. The connection strength is close to the PCB substrate itself and can withstand extreme environmental stress screening. Johoty’s through hole pogo pins can meet the most stringent reliability and lifespan requirements in the automotive, aerospace, and industrial automation fields.
FAQ
High strength integrated structure: using precision turning instead of splicing to eliminate the risk of internal connection point failure.
Optimized spring force and stroke: Accurately matching your inter plate tolerances, providing sustained and stable contact force, and resisting micro disconnections caused by vibration.
Optional locking ring design: Provides additional mechanical locking after wave soldering to prevent pins from loosening under stress.
Fully gold-plated treatment: The key areas of the contacts and pins are coated with thick gold (with different thicknesses available) to ensure excellent conductivity and corrosion resistance, with a resistance as low as<20m Ω.
High elasticity spring material: using finely selected piano steel wire or customized alloy, ensuring minimal attenuation of elasticity after millions of compressions, thereby maintaining long-term stability of contact resistance.
Ultra precision machining of contact surface: mirror level smoothness, reducing surface oxidation and wear, ensuring consistent resistance for each connection.
Comprehensive geometric dimension customization: providing complete customization including barrel diameter, length, spring force, and stroke. Our through hole pogo pins perfectly adapt to your space limitations and electrical needs.
Multiple topper tip styles to choose from: through hole pogo pins with pointed tips, coronal tips, beveled tips, etc., ensuring optimal contact and self-cleaning ability with the target solder pad.
Mature collaborative design capabilities: Our CFT team can work directly with you. Step in from the design phase and provide through hole pogo pins optimization solutions for your high-speed testing fixtures and aerospace electronics.
