Descriptions and Specifications of Non Magnetic Pogo Pins
| Technical Parameters | Specifications | Values to Customers |
|---|---|---|
| Non Magnetic | Material: BeCu pogo pin, optional gold plating (hard gold) or palladium coating. Barrel and internal components are made of stainless steel 316L or a special copper alloy. | Fundamental advantage: It doesn‘t affect the magnetic field of the tested equipment at all. Making it the only choice for medical equipment (MRI), scientific research instruments, and magnetic sensors. |
| Magnetic permeability: Relative magnetic permeability <1.01μ. | ||
| Electrical | Contact resistance:<50mm. | Signal fidelity: Extremely low contact resistance and stable electrical connection ensure that weak signals are not attenuated or noisy. Testing high-frequency and analog signals is crucial. |
| Rated current: 1A standard, can be customized to 50A according to requirements. | ||
| Working voltage: Suitable for low-level circuits, up to 50V DC. | ||
| Mechanical and Life Cycles | Work stroke: Johoty offers a variety of standard stroke from 0.10mm to 5.00mm, and supports customization. | Durability and Consistency: Long lifespan and precise spring force mean lower TCO and more stable, reproducible test results. |
| Spring force: range from 10gf to 300gf, precise and controllable, can match various PCB board and component pressure requirements. | ||
| Mechanical lifespan: Standard value >10,000 cycles (under standard travel and load), Johoty can customize 1M cycles. | ||
| Dimensions and Tolerance | Plunger tip types: optional pointed, crown, cup, concave, flat, etc., suitable for different solder pads or contacts. | High precision alignment: Strict tolerance control ensures accurate and error free alignment of contacts in BGA and micro pitch component testing. Reduce the risk of testing yield loss. |
| Outer diameter tolerance: can be controlled within ± 0.01mm. | ||
| Total length tolerance: can be controlled within ± 0.02mm. | ||
| Environments | Working temperature range: -40°C to +125°C. | Dealing with harsh environments: ensuring long-term reliability in automotive electronics, outdoor equipment, or industrial environments. |
| Corrosion resistance: The coating has undergone salt spray test for ≥48 hours. |
Categories of Non Magnetic Pogo Pins
The key of non magnetic pogo pins lies in design, basic materials and coating, and special production processes. Therefore, non magnetic pogo pins are easily achieved in sizes and electrical parameters by standard pogo pins. You can choose the part number of Johoty’s 10 types of pogo pins to fit your application.
Here, we only present the most common SMT pogo pins and through hole pogo pins for making non magnetic pogo pins. You can also directly contact the Johoty CFT team for further selection.
Materials of Non Magnetic Pogo Pins
| Raw Materials | Descriptions | Features |
|---|---|---|
| SUS304L | The most commonly used non magnetic materials | Excellent corrosion resistance, good weldability, low magnetism |
| SUS316L | Non magnetic steel | Stronger corrosion resistance, chemical resistance, low magnetic interference |
| Non magnetic stainless steel (customized) | Adjust the alloy composition to avoid ferromagnetism | Near zero magnetic response, high stability |
| Invar 36 Alloy | Extremely low coefficient of thermal expansion | Constant size, non magnetic under temperature changes |
| Phosphor Bronze | Commonly used copper alloys with good elasticity | Strong spring force, fatigue resistance, low magnetism |
| Beryllium Copper/BeCu | High resilience and high-quality spring material | High elastic modulus, wear and fatigue resistance, low magnetism |
| Ni‑free Cu Alloy | Replace nickel to reduce magnetism | Excellent conductivity, low magnetism |
| BeCu C17200 | Doesn’t contain hazardous nickel or reduces its content to demagnetize | High conductivity, good spring performance |
| BeCu Spring | Core spring | High spring force, low magnetic response |
| Non magnetic stainless spring steel(200) | Spring fasteners | Good elasticity, high temperature resistance, can be non-magnetic treated |
| Special non-magnetic nickel-titanium alloy | High performance springs | Shape Memory, Near Zero Magnetism |
| Gold-plating | High-frequency signal contact surface | Excellent conductivity, oxidation resistance, stable contact |
| Ni‑Free Au/Ni‑Free Flash | Avoid nickel causing magnetism or allergies | Low magnetic, biocompatible |
| Platinum (Pt) plating | High-end high-temperature resistant applications | Ultra corrosion-resistant, high stability |
| Rhodium or palladium plating | Wear-resistant/low contact impedance | Good conductivity, wear/corrosion resistance |
Appliations of Non Magnetic Pogo Pins
Internal connections of MRI equipment:
The patient enters the MRI scanning chamber, and the sensor circuit board and RF coil connector inside the device use non-magnetic pogo pins. Using beryllium copper, completely eliminating ferromagnetic materials, avoiding interference with strong magnetic field uniformity, and preventing image distortion.
Implantable medical devices:
The interface of the implanted nerve control device is adjusted before delivery or during operation. Meet biocompatibility requirements, have no rejection reaction after long-term contact with human tissues, and avoid accidental triggering of magnetic valves in the body.
Surgical robots and sterile diagnostic and treatment equipment:
Mechanical arm end tool interface, high-frequency electric knife connection seat, resistant to alcohol/chemical disinfectant wiping. Corrosion resistant coating, high lifespan insertion and removal >10,000 times, ensuring zero signal interruption during surgery.
Satellite communication and navigation system:
The signal transmission interface and gyroscope sensor connection of the satellite solar panel deployment mechanism. Non magnetic pogo pins avoid interference with geomagnetic navigation sensors and can withstand vacuum, cold and hot temperatures ranging from -55℃ to 125℃, as well as strong radiation.
Military night vision devices and high-precision positioning:
Head mounted night vision device battery compartment or data module plug-in port for individual equipment. Ensure absolute accuracy of compass pointing in a non-magnetic environment, comply with MIL-STD standards, and resist impact and vibration.
CSP, BGA, QFN chip testing:
Perform functional testing by vertically lifting and lowering the plunger tip on wafer pads with a pitch of 0.15mm~0.30mm. Fine Pitch provides stable elasticity, and chip testing ensures a pure signal path in high-frequency testing environments without introducing additional magnetic field noise.
High precision automated production line:
Plug and play interface for precision robot arm end fixtures. Non magnetic pogo pins must be used next to magnetic sensitive visual positioning systems to prevent positioning drift.
Quantum computing equipment:
The signal reading circuit and animal nerve signal recording probe interface inside the dilution refrigeration machine. Quantum bits are extremely sensitive to weak electromagnetic interference. Non magnetic pogo pins eliminate decoherence effects from the material source.
High frequency oscilloscope and network analyzer probe:
Engineers hold high-frequency probes to measure PCB boards. Supports bandwidth above 10GHz, non magnetic coating reduces skin effect loss, and stable contact resistance below 30mΩ.
Magnetic sensor interface for smartphones/tablets:
The charging or signal pin next to the geomagnetic sensor. Ordinary magnetic needles will permanently affect the calibration data of nearby magnetic sensors. Causing compass pointing deviation, non magnetic pogo pins ensure navigation accuracy.
High end AR/VR headset modular connection:
The hot swappable battery pack or tracking module on the side of the headset is guided by magnetic attraction and non magnetic pogo pins for conduction. Realize power and high-speed data transmission in a very small space without interfering with the positioning magnetic field mapping inside the headset.
Deep sea/polar exploration equipment:
Data dock station for underwater unmanned aerial vehicles (AUVs). High pressure resistance, corrosion resistance, and avoidance of misjudgment by the ship’s demagnetization system.
Cost and delivery of Johoty non magnetic pogo pins
Cost competitiveness:
Johoty offers non-magnetic pogo pins at competitive prices for bulk purchases. By optimizing the production process, we have maximized the reduction of production costs. Ensure that customers receive high-quality non-magnetic pogo pins with high cost-effectiveness within budget.
Fast delivery cycle:
Johoty’s production line is efficient and flexible, ensuring that most orders can be delivered within 2 weeks. Johoty knows the delivery importance in depth for customer projects. Therefore, strict control is exercised over the delivery time of non-magnetic pogo pins. Promise to deliver on time and avoid any delays.
No additional implicit fees:
Our quotation is clear and transparent, without any hidden costs. Avoiding the additional expenses that customers often encounter during the procurement process. By collaborating with Johoty, you will have a clear cost breakdown for each stage.
Customized services and flexibility:
According to customer requirements, Johoty provides customized non-magnetic pogo pins solutions that can meet your engineering needs, whether it is special specifications or bulk requirements. Meanwhile, our flexible production capacity enables us to quickly respond to urgent customer needs.
Long term and reliable cooperative relationship:
By choosing Johoty, you can obtain high-quality non-magnetic pogo pins and establish long-term reliable partnerships. Johoty focuses on after-sales service and provides technical support to customers. Ensure the optimal performance of non-magnetic pogo pins in practical applications.
