サンケイエンジニアリング Product Lineup

**Overview** The contact part is made of a silver alloy with good conductivity. Depending on the size, it can handle currents from 15A to 300A. In the case of high current conduction, unexpected events may occur at the probe tip and the surface of the workpiece due to heat generated from contact resistance. Please consult us in advance for high current applications. Additionally, please refer to this for considerations during selection. We offer four types for high current applications. ● CP Series → The tip material of the general-purpose CP series is AgW. ● CPM Series → The bush section is a nut-type with threaded processing. ● CPMM Series → A large probe capable of conducting over 70A. ● Coaxial Type → A probe compatible with high current that allows for four-terminal measurements. Approximate dimensions are displayed in the downloadable materials. We accept custom orders for size changes and other requests, so please contact us.

We propose a probe that keeps contact resistance low, reduces the heating temperature of the contact area and the probe body, and achieves stable resistance. It can also handle currents of 400A or more, so please feel free to consult us. We also offer contract measurement services for pre-experimental current testing, as well as units and fixtures that incorporate the probes. Please contact us through our website first. ★http://www.sankei-engineering.com/★

For 40 years, we have been manufacturing contact probes used for various measurements. Based on the material, shape, and surface treatment of the workpiece, as well as measurement conditions (current value, energization cycle, ambient temperature, measurement speed), we will propose contact probes suitable for your usage conditions. If you have any questions or concerns regarding electrical measurements, please feel free to contact us through our website. ★http://www.sankei-engineering.com/★

With 40 years of experience, we have been manufacturing contact probes used in various measurements. We also provide contact probes compatible with power semiconductors (power modules, power control ICs, power MOSFETs, rectifier diodes). Based on the material, shape, and surface treatment of the workpiece, as well as measurement conditions (current values, current cycles, environmental temperature, measurement speed), we will propose contact probes suitable for your usage conditions. If you have any questions or concerns regarding electrical measurements, please feel free to contact us through our website. ★http://www.sankei-engineering.com/★

With 40 years of experience, we have been manufacturing contact probes used for various measurements. We also offer high-current contact probes that can handle battery charging and discharging. After inquiring about the material, shape, surface treatment of the workpiece, and measurement conditions (current value, current cycle, environmental temperature, measurement speed), we will propose contact probes suitable for your usage conditions. If you have any questions or concerns regarding electrical measurements, please feel free to contact us through our website. ★http://www.sankei-engineering.com/★

Do you have any experience with these troubles on the high current inspection line? - The line keeps stopping without being able to identify the cause. - Various types of probes have been tried, but there is no improvement. - There are suspicions of overheating or poor contact, but it cannot be isolated. The trouble may actually be caused by "abnormal overheating at the contact points due to high current conduction." Furthermore, this abnormal overheating could be caused by multiple factors intricately intertwined, such as increased resistance at the contacts, the occurrence of tiny sparks, or exceeding specifications due to harsh operating environments. Therefore, we will take your actual measurement work and the probes that are currently problematic, conduct actual measurements and experiments on contact resistance and other factors using our in-house equipment, clarify the mechanism of abnormal occurrences, and select and propose the optimal contact probe that leads to trouble resolution based on objective evidence from actual measurement data. ★ Please feel free to consult us first through the inquiry form on our website or by phone.

In power device current testing, such as for power modules and power control ICs, do you have concerns like "I need to pass a large current despite the narrow electrode pitch"? At Sankei Engineering, we offer a wide range of contact probes designed to solve this challenge with "narrow pitch x large current compatibility." Our catalog includes products ranging from a minimum diameter of φ5.0mm (usable current up to 20A) to a maximum diameter of φ22.0mm (usable current up to 300A). Moreover, we can accommodate special electrode shapes and narrow pitch arrangements that are difficult to address with catalog items through custom orders. We can design and manufacture products optimized for your usage environment, including changes to the tip shape, adjustments to spring load, and size design tailored to your fixtures. We welcome inquiries at the stage of comparison and information gathering. Please feel free to consult us through the contact form on our website. *Please note that selecting large current probes requires caution. Here are the selection points and precautions [Power Device Selection Points URL].

In the charging and discharging tests of EV batteries and cylindrical cells, do you have any concerns such as: "I am looking for a probe that can withstand long hours of continuous current" or "The contact area of the electrode is small, and standard products do not fit"? Sankei Engineering offers a wide range of high-current contact probes designed to solve these issues for battery charging and discharging tests. Our catalog includes a broad lineup, from a minimum diameter of φ5.0mm (usable current under 20A) to a maximum diameter of φ22.0mm (usable current under 300A). Furthermore, for special electrode shapes that are difficult to accommodate with catalog products or when the contact area is small, we can manufacture custom probes by changing the tip diameter and shape. We also provide design and manufacturing of products optimized for your usage environment, including adjustments to spring load and size design tailored to fixtures. Inquiries during the comparison and information-gathering stage are also welcome. Please feel free to consult us through the contact form on our website. *Care should be taken when selecting high-current probes. For selection points and precautions, please refer to [Battery Selection Points URL].

The selection of high-current probes used for power device conduction tests needs to be done carefully. Incorrect selection can lead to abnormal heating or sparking, potentially resulting in significant losses such as damage to expensive devices or equipment failure. There are mainly two key points to consider when choosing the appropriate probe: 1. Compatibility of specifications: It is important to select a probe that has sufficient margin for the usable current in the limited space due to device miniaturization. 2. Contact resistance between the probe and the workpiece: Even slight contact resistance can cause measurement errors or abnormal heating, so it is crucial to choose a probe that can maintain stable contact with the workpiece. However, many customers are unsure about "what specific criteria to use for judgment." Therefore, Sankei Engineering offers a "Free Probe Selection Service." We will actually take your measurement workpiece, measure the contact resistance with our equipment, and based on the data obtained, we will select and propose the most suitable probe for your usage environment. Inquiries during the comparison and information-gathering stages are also welcome. Please feel free to consult us through the contact form on our website.

The selection of high-current probes used for battery charge and discharge testing must be done carefully. If the selection is incorrect, it can lead to abnormal heating or sparking, potentially causing workpiece welding or equipment failure. There are mainly two key points to consider when choosing the appropriate probe: 1. Specification compatibility: In charge and discharge cycle tests that involve long periods of continuous current flow, it is important to select a probe that has sufficient current capacity relative to the actual usage current value. 2. Contact resistance between the probe and the workpiece: Even slight contact resistance can cause contact heating during current flow, leading to workpiece welding, so it is crucial to choose a probe that can maintain stable contact with the workpiece. However, many customers struggle with "what specific criteria to use for judgment." Therefore, Sankei Engineering offers a **free probe selection service**. We will take your measurement workpiece and measure the contact resistance using our equipment. Based on the data obtained, we will select and propose the most suitable probe for your usage environment. Inquiries during the comparison and information-gathering stage are also welcome. Please feel free to consult us through the contact form on our website.

In power device conduction tests, do you have concerns such as, "The contact resistance varies, and the reliability of the data cannot be ensured" or "No improvement even after replacing the probes multiple times"? The causes of contact failure in conduction tests include a variety of factors, such as: - Mismatch between the probe tip shape and the work material - Wear of the probe tip - Adhesion of foreign substances - Deformation of the spring due to high temperatures leading to reduced load and identifying these issues is not easy. Especially in conduction tests that carry large currents, contact failures can lead to abnormal heating or sparking during conduction, potentially resulting in significant losses such as damage to expensive devices or equipment failures. Therefore, we collect your workpieces and the probes you are currently using and conduct experiments on contact resistance and other factors using our own equipment. We visualize the data to identify the root causes of contact failures. Based on this, we propose the optimal probe shape and load conditions tailored to your usage conditions and work characteristics, and we provide free support all the way to the selection that leads to actual improvements. Please feel free to consult us through the inquiry form.

Do you have concerns such as, "The contact resistance is inconsistent, and I'm worried if charging and discharging are working," "The power supply is unstable, and the test stops midway," or "The workpiece and probe are sticking together and adhering"? Charging and discharging tests involve longer durations and higher currents than regular measurements, making it more likely for issues caused by heat generation to arise, such as: 【Problems due to heat generation across the entire line】 - Decreased load due to spring fatigue, etc. 【Problems due to heat generation at the contact points】 - Promotion of shape changes at the probe tip - Promotion of foreign object adhesion, etc. These issues can become more pronounced if the probe is not suitable for the workpiece shape or measurement conditions. Therefore, we will take your workpiece and the probes currently in use, and conduct experiments on contact resistance and other factors using our own equipment. We will visualize "why the measurements are not going well" with data and identify the root causes of measurement failures. Based on this, we will propose the optimal probe shape and load conditions suited to your usage conditions and workpiece characteristics, providing free support all the way to the selection that leads to actual improvements. Please feel free to contact us through the inquiry form.

The selection of probes for high current applications must be done carefully. If the selection is incorrect, there is a risk of serious problems such as abnormal heating or sparks, which can lead to equipment failure. There are mainly two important points to consider when choosing the appropriate probe: 1. Compatibility of the operating current value and specifications: It is crucial to ensure that the probe's maximum operating current has sufficient margin compared to the actual operating current value. 2. Contact resistance between the probe and the workpiece: High contact resistance can lead to increased heating during current flow. Selecting a probe that can achieve stable low contact resistance contributes to ensuring safety and quality. However, there are many customers who say, "I don't know what specific criteria to use for judgment." Therefore, Sankei Engineering offers a **free probe selection service**. We will actually take your workpiece (product or part) and measure the contact resistance using our equipment. Based on the data obtained, we will propose the most suitable probe for your operating environment. Inquiries during the comparison and information-gathering stage are also welcome. Please feel free to consult us through the contact form on our website.

The selection of probes for charge and discharge testing of EV batteries and lithium-ion batteries must be done carefully. This is due to the risk of significant issues caused by heat generation in harsh environments where current is applied for longer periods than usual. There are three main important points to consider when choosing the appropriate probe: 1. Compatibility of operating current and specifications If there is not enough margin in the probe's allowable operating current, abnormal heat generation may occur during current flow. 2. Heat resistance of the probe Since heat generation due to prolonged current flow is unavoidable, selecting heat-resistant specifications may help reduce the deterioration (sagging) of the spring. 3. Contact resistance between the probe and the workpiece High contact resistance can cause heat generation at the contact point, potentially leading to deformation or welding of the probe tip. However, there are many customers who say, "I don't know how to specifically judge and choose." Therefore, Sankei Engineering offers a [Free Probe Selection Service]. We will take your workpiece and measure the contact resistance using our equipment, and based on that data, we will propose the most suitable probe for your operating environment. Inquiries during the information-gathering stage are also welcome. Please feel free to contact us through the inquiry form.