{"id":806,"date":"2025-11-22T07:05:30","date_gmt":"2025-11-22T07:05:30","guid":{"rendered":"https:\/\/welleltron.com\/?post_type=product&p=806"},"modified":"2025-12-30T07:19:26","modified_gmt":"2025-12-30T07:19:26","slug":"hitachi-srp-4-probe","status":"publish","type":"product","link":"https:\/\/welleltron.com\/es\/test-equipment\/srp-4-probe\/hitachi-srp-4-probe\/","title":{"rendered":"Hitachi SRP-4 Probe"},"content":{"rendered":"

Hitachi SRP-4 Probe Overview<\/h2>\n

Hitachi SRP-4 Probe<\/b> is a highly specialized, OEM SRP-4 probe accessory designed for the Oxford \/ Hitachi compatible SRP-4 CMI563 and CMI700 series Coating Thickness Gauge instruments. The probe’s primary function is to address the critical need for precise, Non-Destructive Testing (NDT) of Surface Copper Thickness on Printed Circuit Boards (PCBs), making it essential for PCB Quality Control (QC) in Electronics Manufacturing.<\/p>\n

Hitachi CMI563 SRP-4<\/strong> probe is a professional Surface Cu Srp-4 Probe<\/span>\u00a0tailored for Hitachi (Oxford) CMI563 and\u00a0CMI700 Cu Thickness Tester<\/span>. Leveraging eddy current and microresistance dual principles, it delivers \u00b11% accuracy for PCB surface copper thickness measurement. Compatible with chemical, electroplated copper, and substrate layers, its replaceable SRP-4 Tips and built-in lighting ensure long-term reliability. Paired with CMI700 Probe and\u00a0calibration standard plate<\/span>, it\u2019s essential for PCB quality control.<\/p>\n

\"Srp<\/p>\n

Technical Principle: Dual Technology for High Resolution Thickness<\/h2>\n

The SRP-4 Thickness Probe<\/b> integrates two measurement principles to ensure accuracy across a wide range of thicknesses, a key advantage over single-principle probes.<\/p>\n

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  • \n

    Micro-Resistance (Four-Point Probe):<\/span><\/b> This is the core technology.<\/span> The <\/span>Four-Point Probe<\/span> structure (two constant current pins, two voltmeter pins) measures the resistance of the copper layer.<\/span> Since resistance is inversely proportional to thickness, the instrument can calculate the PCB Copper Thickness with high precision. This method is particularly accurate for very thin chemical copper (0.25\u03bcm<\/span>\u00a0to 12.7\u03bcm<\/span>). This principle ensures the reading is Substrate Independent\u2014meaning the insulation board or backside copper layer does not interfere with the measurement.<\/p>\n<\/li>\n

  • \n

    Eddy Current:<\/b> This technology is used concurrently, typically for measuring thicker Electrodeposited Copper layers (up to 152\u03bcm<\/span>) and providing stability in the dual-principle analysis.<\/p>\n<\/li>\n<\/ul>\n

    The dual principle results in an impressive accuracy of \u00b11%<\/span> ( \u00b10.1\u03bcm<\/span>) when used with a Calibration Standard<\/b> Plate.<\/p>\n

    Design and Product Features<\/h2>\n

    The Hitachi CMI500 SRP-4 Probe<\/b> (compatible with CMI700\/CMI563) is engineered for efficiency and low maintenance costs in Printed Circuit Board Testing.<\/p>\n

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    • \n

      Patented Replaceable Tips:<\/b> The Oxford-patented SRP-4 Tips allow users to perform a Hitachi SRP-4 Probe replacement of only the worn contact tips, cutting maintenance costs by 50%<\/span>\u00a0compared to non-replaceable probes. This addresses the common search for SRP-4 Probe price solutions.<\/p>\n<\/li>\n

    • \n

      Smart Positioning:<\/b> A built-in LED lighting<\/b> system and anti-slip protective cover facilitate precise placement on small PCB pads and copper traces, significantly reducing positioning errors during Copper Trace Thickness measurement, especially in high-density interconnect (HDI) testing.<\/p>\n<\/li>\n

    • \n

      Wide Test Range:<\/b> The probe handles all critical surface copper layers, from the thinnest Electroless Copper to the thickest Electrodeposited Copper, meeting diverse manufacturing standards (e.g., IPC-6012).<\/p>\n<\/li>\n<\/ul>\n

      Usage Protocol and Maintenance<\/h2>\n

      Proper utilization, as outlined in the SRP-4 Probe operation manual<\/b>, maximizes the SRP-4 probe lifetime and accuracy.<\/p>\n

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      1. \n

        Preparation and Calibration:<\/b> Connect the Hitachi SRP-4 Probe to the tester. The system requires initial Copper Thickness Calibration using the certified Calibration Standard Plate.<\/p>\n<\/li>\n

      2. \n

        Positioning:<\/b> Clean the test area with a Nylon brush. Activate the LED light and place the four tips firmly and evenly onto the surface copper layer.<\/p>\n<\/li>\n

      3. \n

        Measurement:<\/b> Initiate the measurement on the tester; the result is generated in 1\u20132<\/span>\u00a0seconds.<\/p>\n<\/li>\n

      4. \n

        Maintenance:<\/b> After use, the tips should be cleaned with a PVA Sponge Roller. SRP-4 Probe repair is typically limited to replacing the SRP-4 Tips when wear exceeds 0.5 mm<\/span>.<\/p>\n<\/li>\n<\/ol>\n

        Application Scenarios and Value<\/h2>\n

        The SRP-4 measurement probe<\/b> is an indispensable tool for manufacturers seeking to ensure compliance and reduce defects.<\/p>\n

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        • \n

          Automotive PCB Manufacturing:<\/b> Ensures thick copper plating meets high-reliability standards, often integrated into a complete QC workflow with the ETP Probe for PTH hole copper thickness testing.<\/p>\n<\/li>\n

        • \n

          HDI Board Production:<\/b> Essential for accurately controlling the thickness of ultra-thin Electroless Copper used in micro-vias and HDI structures.<\/p>\n<\/li>\n

        • \n

          Cost Efficiency:<\/b> The durable design and replaceable tips significantly reduce annual maintenance costs, making the Hitachi SRP Probe<\/b> a cost-effective solution for long-term use. Manufacturers looking for the best deal often seek an SRP-4 wholesale supplier or OEM SRP-4 probe distributor.<\/p>\n<\/li>\n<\/ul>\n

          Production Process<\/strong><\/h2>\n
          1. Material Sourcing: High-purity conductive alloy for tips, corrosion-resistant ABS for the probe body.<\/div>\n
          2. Precision Machining: CNC processes four tips to ensure uniform spacing (\u00b10.01mm) for stable current.<\/div>\n
          3. Technology Integration: Embed eddy current sensors and microresistance modules, test signal stability.<\/div>\n
          4. Calibration: Each probe is calibrated with Cmi700 Calibration Standard, recording accuracy data.<\/div>\n
          5. Quality Check: Test tip wear resistance, lighting function, and compatibility with CMI563\/CMI700 testers.<\/div>\n
          6. Packaging: Anti-static bag + foam cushioning to avoid damage during transportation.<\/div>\n
          \n

           <\/p>\n

          Q1: Is it compatible with older Oxford CMI700 models?<\/strong><\/div>\n
          A1: Yes\u2014works with all CMI700 and CMI563 series testers, no firmware update required.<\/div>\n
          <\/div>\n
          Q2: How often should SRP-4 Tips be replaced?<\/strong><\/div>\n
          A2: Typically every 50,000 measurements; use Gel timer to track usage frequency for timely replacement.<\/div>\n
          <\/div>\n
          Q3: Can it test curved PCB surfaces?<\/strong><\/div>\n
          A3: For slightly curved surfaces (\u22645\u00b0), use the optional flexible probe adapter; contact us for custom solutions.<\/div>\n
          <\/div>\n
          Q4: What\u2019s the lead time for replacement tips?<\/strong><\/div>\n
          A4: Standard SRP-4 Tips: 3\u20135 days; Srp-4 Crystal Tips: 7\u201310 days.<\/div>\n
          <\/div>\n
          Q5: Do you provide calibration services?<\/strong><\/div>\n
          A5: Yes\u2014annual calibration service with Calibration Standard Plate, providing traceable certification<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

          Hitachi SRP-4 Probe is a four-point micro-resistance probe used with the Hitachi\/Oxford CMI series coating thickness gauges for high-precision, non-destructive measurement of surface copper thickness on PCBs.<\/p>","protected":false},"featured_media":2144,"template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[],"product_cat":[63,61],"product_tag":[],"class_list":{"0":"post-806","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-srp-4-probe","7":"product_cat-test-equipment","9":"first","10":"instock","11":"virtual","12":"purchasable","13":"product-type-simple","14":"entry","15":"content-bg","16":"loop-entry"},"taxonomy_info":{"product_cat":[{"value":63,"label":"Hitachi SRP-4 probe"},{"value":61,"label":"Test equipment"}]},"featured_image_src_large":["https:\/\/welleltron.com\/wp-content\/uploads\/2025\/12\/SRP-4-Probe-3.jpg",850,850,false],"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/product\/806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/media\/2144"}],"wp:attachment":[{"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/media?parent=806"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/product_brand?post=806"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/product_cat?post=806"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/welleltron.com\/es\/wp-json\/wp\/v2\/product_tag?post=806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}