{"id":806,"date":"2025-11-22T07:05:30","date_gmt":"2025-11-22T07:05:30","guid":{"rendered":"https:\/\/welleltron.com\/?post_type=product&#038;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":"<h2>Hitachi SRP-4 Probe Overview<\/h2>\n<p data-path-to-node=\"1\"><b>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&#8217;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<p data-path-to-node=\"3\"><strong>Hitachi CMI563 SRP-4<\/strong> probe is a professional <span class=\"keywords_replace\">Surface Cu Srp-4 Probe<\/span>\u00a0tailored for Hitachi (Oxford) CMI563 and\u00a0<span class=\"keywords_replace\">CMI700 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\u00a0<span class=\"keywords_replace\">calibration standard plate<\/span>, it\u2019s essential for PCB quality control.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-1158\" src=\"https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-300x300.jpg\" alt=\"Srp 4 Probe\" width=\"396\" height=\"396\" srcset=\"https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-300x300.jpg 300w, https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-150x150.jpg 150w, https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-768x768.jpg 768w, https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-600x600.jpg 600w, https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe-100x100.jpg 100w, https:\/\/welleltron.com\/wp-content\/uploads\/2025\/11\/SRP-4-Probe.jpg 801w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/p>\n<h2 data-path-to-node=\"3\">Technical Principle: Dual Technology for High Resolution Thickness<\/h2>\n<p data-path-to-node=\"4\">The <b>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<ul data-path-to-node=\"5\">\n<li>\n<p data-path-to-node=\"5,0,0\"><b><span class=\"citation-127\">Micro-Resistance (Four-Point Probe):<\/span><\/b><span class=\"citation-127 citation-end-127\"> This is the core technology.<\/span> <span class=\"citation-126\">The <\/span><span class=\"citation-126\">Four-Point Probe<\/span><span class=\"citation-126 citation-end-126\"> 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 (<span class=\"math-inline\" data-math=\"0.25 \\mu\\text{m}\">0.25\u03bcm<\/span>\u00a0to <span class=\"math-inline\" data-math=\"12.7 \\mu\\text{m}\">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<li>\n<p data-path-to-node=\"5,1,0\"><b>Eddy Current:<\/b> This technology is used concurrently, typically for measuring thicker Electrodeposited Copper layers (up to <span class=\"math-inline\" data-math=\"152 \\mu\\text{m}\">152\u03bcm<\/span>) and providing stability in the dual-principle analysis.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"6\">The dual principle results in an impressive accuracy of \u00b11<span class=\"math-inline\" data-math=\"\\pm 1\\%\">%<\/span> (<span class=\"math-inline\" data-math=\"\\pm 0.1 \\mu\\text{m}\"> \u00b10.1\u03bcm<\/span>) when used with a <b>Calibration Standard<\/b> Plate.<\/p>\n<h2 data-path-to-node=\"8\">Design and Product Features<\/h2>\n<p data-path-to-node=\"9\">The <b>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<ul data-path-to-node=\"10\">\n<li>\n<p data-path-to-node=\"10,0,0\"><b>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 <span class=\"math-inline\" data-math=\"50\\%\">50%<\/span>\u00a0compared to non-replaceable probes. This addresses the common search for SRP-4 Probe price solutions.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,1,0\"><b>Smart Positioning:<\/b> A <b>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<li>\n<p data-path-to-node=\"10,2,0\"><b>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<h2 data-path-to-node=\"12\">Usage Protocol and Maintenance<\/h2>\n<p data-path-to-node=\"13\">Proper utilization, as outlined in the <b>SRP-4 Probe operation manual<\/b>, maximizes the SRP-4 probe lifetime and accuracy.<\/p>\n<ol start=\"1\" data-path-to-node=\"14\">\n<li>\n<p data-path-to-node=\"14,0,0\"><b>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<li>\n<p data-path-to-node=\"14,1,0\"><b>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<li>\n<p data-path-to-node=\"14,2,0\"><b>Measurement:<\/b> Initiate the measurement on the tester; the result is generated in <span class=\"math-inline\" data-math=\"1\u20132\">1\u20132<\/span>\u00a0seconds.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,3,0\"><b>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 <span class=\"math-inline\" data-math=\"0.5 \\text{mm}\">0.5 mm<\/span>.<\/p>\n<\/li>\n<\/ol>\n<h2 data-path-to-node=\"15\">Application Scenarios and Value<\/h2>\n<p data-path-to-node=\"16\">The <b>SRP-4 measurement probe<\/b> is an indispensable tool for manufacturers seeking to ensure compliance and reduce defects.<\/p>\n<ul data-path-to-node=\"17\">\n<li>\n<p data-path-to-node=\"17,0,0\"><b>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<li>\n<p data-path-to-node=\"17,1,0\"><b>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<li>\n<p data-path-to-node=\"17,2,0\"><b>Cost Efficiency:<\/b> The durable design and replaceable tips significantly reduce annual maintenance costs, making the <b>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<h2><strong>Production Process<\/strong><\/h2>\n<div>1. Material Sourcing: High-purity conductive alloy for tips, corrosion-resistant ABS for the probe body.<\/div>\n<div>2. Precision Machining: CNC processes four tips to ensure uniform spacing (\u00b10.01mm) for stable current.<\/div>\n<div>3. Technology Integration: Embed eddy current sensors and microresistance modules, test signal stability.<\/div>\n<div>4. Calibration: Each probe is calibrated with Cmi700 Calibration Standard, recording accuracy data.<\/div>\n<div>5. Quality Check: Test tip wear resistance, lighting function, and compatibility with CMI563\/CMI700 testers.<\/div>\n<div>6. Packaging: Anti-static bag + foam cushioning to avoid damage during transportation.<\/div>\n<div>\n<p>&nbsp;<\/p>\n<div><strong>Q1: Is it compatible with older Oxford CMI700 models?<\/strong><\/div>\n<div>A1: Yes\u2014works with all CMI700 and CMI563 series testers, no firmware update required.<\/div>\n<div><\/div>\n<div><strong>Q2: How often should SRP-4 Tips be replaced?<\/strong><\/div>\n<div>A2: Typically every 50,000 measurements; use Gel timer to track usage frequency for timely replacement.<\/div>\n<div><\/div>\n<div><strong>Q3: Can it test curved PCB surfaces?<\/strong><\/div>\n<div>A3: For slightly curved surfaces (\u22645\u00b0), use the optional flexible probe adapter; contact us for custom solutions.<\/div>\n<div><\/div>\n<div><strong>Q4: What\u2019s the lead time for replacement tips?<\/strong><\/div>\n<div>A4: Standard SRP-4 Tips: 3\u20135 days; Srp-4 Crystal Tips: 7\u201310 days.<\/div>\n<div><\/div>\n<div><strong>Q5: Do you provide calibration services?<\/strong><\/div>\n<div>A5: Yes\u2014annual calibration service with Calibration Standard Plate, providing traceable certification<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>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 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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 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