{"id":188260,"date":"2025-08-25T14:52:54","date_gmt":"2025-08-25T07:52:54","guid":{"rendered":"https:\/\/techmaster.com.vn\/?post_type=product&#038;p=188260"},"modified":"2026-09-28T12:34:59","modified_gmt":"2026-09-28T05:34:59","slug":"keysight-e4990a-impedance-analyzer","status":"publish","type":"product","link":"https:\/\/techmaster.com.vn\/en\/keysight-e4990a-impedance-analyzer\/","title":{"rendered":"Keysight E4990A Impedance Analyzer"},"content":{"rendered":"<style>.kx{font-family:'Roboto',system-ui,sans-serif;color:#2a2f36;line-height:1.65;font-size:16px;max-width:1080px;margin:0 auto} .kx *{box-sizing:border-box} .kx h2,.kx h3{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:#123E78;font-weight:800;line-height:1.2;margin:0} .kx h2{font-size:clamp(22px,2.6vw,30px);margin:0 0 14px}.kx h3{font-size:20px;margin:0 0 12px} .kx p{margin:0 0 14px}.kx p strong{color:#123E78}.kx a{color:#1B55A6;text-decoration:none} .kx .eyebrow{font-family:'Be Vietnam 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10px 26px rgba(14,52,112,.1);transform:translateY(-3px)} .kx .card .i{font-size:24px;margin-bottom:10px}.kx .card h3{font-size:15px;margin-bottom:5px}.kx .card p{font-size:13.5px;color:#5b6b80;margin:0} @media(max-width:900px){.kx .cards,.kx .cards.c3{grid-template-columns:1fr 1fr}}@media(max-width:520px){.kx .cards,.kx .cards.c3{grid-template-columns:1fr}} .kx .faq details{background:#fff;border:1px solid #e4ebf4;border-radius:10px;padding:2px 20px;margin-bottom:12px}.kx .faq details[open]{box-shadow:0 2px 10px rgba(14,52,112,.06)} .kx .faq summary{list-style:none;cursor:pointer;font-family:'Be Vietnam Pro',sans-serif;font-weight:700;color:#123E78;font-size:16px;padding:16px 0;display:flex;justify-content:space-between;gap:14px}.kx .faq summary::-webkit-details-marker{display:none}.kx .faq summary::after{content:\"+\";font-size:22px;color:#1B55A6}.kx .faq details[open] summary::after{content:\"\u2013\"} .kx .faq .a{padding:0 0 18px;color:#5b6b80;font-size:15px}.kx .faq .a strong{color:#123E78} .kx .cta{background:linear-gradient(120deg,#0E3470,#1B55A6);color:#fff;border-radius:18px;padding:34px 30px;text-align:center}.kx .cta h3{color:#fff;font-size:22px;margin-bottom:8px}.kx .cta p{color:rgba(255,255,255,.85);margin-bottom:18px} .kx .cta a{display:inline-block;font-family:'Be Vietnam Pro',sans-serif;font-weight:700;border-radius:999px;padding:12px 26px;margin:4px}.kx .cta .b1{background:#C70032;color:#fff}.kx .cta .b2{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}.kx .ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:4px 0 6px}.kx .ncard{position:relative;display:block;height:152px;border-radius:12px;overflow:hidden;background-size:cover;background-position:center;text-decoration:none;box-shadow:0 2px 10px rgba(14,52,112,.10);transition:transform .25s,box-shadow .25s}.kx .ncard:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(14,52,112,.22)}.kx .ncard .nov{position:absolute;left:0;right:0;top:0;bottom:0;background:linear-gradient(180deg,rgba(9,26,62,0) 0%,rgba(9,26,62,.28) 38%,rgba(9,26,62,.72) 70%,rgba(9,26,62,.90) 100%)}.kx .ncard .nlb{position:absolute;left:14px;right:14px;bottom:11px;height:2.6em;display:block;overflow:hidden;color:#fff;font-family:'Be Vietnam Pro',system-ui,sans-serif;font-weight:700;font-size:15.5px;line-height:1.3;text-shadow:0 1px 6px rgba(0,0,0,.55)}.kx .ncard .nar{position:absolute;right:12px;top:10px;color:#fff;font-size:15px;opacity:.85}@media(max-width:900px){.kx .ngrid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.kx .ngrid{grid-template-columns:1fr}.kx .ncard{height:136px}}.kx .cta .b1 .ic{display:inline-block;filter:brightness(0) invert(1)}<\/style>\n<h2>Keysight E4990A Impedance Analyzer \u2013 20 Hz to 10\/20\/30\/50\/120 MHz<\/h2>\n<figure id=\"attachment_188255\" aria-describedby=\"caption-attachment-188255\" style=\"width: 1156px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/08\/Keysight-E4990A-.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-188255\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/08\/Keysight-E4990A-.png\" alt=\"Keysight E4990A \" width=\"1156\" height=\"770\" \/><\/a><figcaption id=\"caption-attachment-188255\" class=\"wp-caption-text\">Keysight E4990A<\/figcaption><\/figure>\n<h3 data-start=\"230\" data-end=\"526\">Overview<\/h3>\n<p data-start=\"230\" data-end=\"526\">The Keysight E4990A is a precision impedance analyzer covering 20 Hz to 120 MHz with best-in-class \u00b10.045% (typ.) accuracy. Featuring a built-in \u00b140 V DC bias and wide impedance range from 25 m\u2126 to 40 M\u2126, it is designed for component, semiconductor, and materials characterization.<\/p>\n<h3 data-start=\"528\" data-end=\"744\">Applications<\/h3>\n<ul>\n<li data-start=\"528\" data-end=\"744\">Passive component evaluation (capacitors, inductors, resistors)<\/li>\n<li data-start=\"528\" data-end=\"744\">Semiconductor and material characterization<\/li>\n<li data-start=\"528\" data-end=\"744\">Quality assurance and incoming inspection<\/li>\n<li data-start=\"528\" data-end=\"744\">R&amp;D and production line testing<\/li>\n<\/ul>\n<h3 data-start=\"746\" data-end=\"776\">Technical Specifications<\/h3>\n<ul data-start=\"777\" data-end=\"1352\">\n<li data-start=\"777\" data-end=\"846\">\n<p data-start=\"779\" data-end=\"846\">Frequency Options: 20 Hz to 10\/20\/30\/50\/120 MHz (upgradeable)<\/p>\n<\/li>\n<li data-start=\"847\" data-end=\"889\">\n<p data-start=\"849\" data-end=\"889\">Accuracy: \u00b10.08% (\u00b10.045% typical)<\/p>\n<\/li>\n<li data-start=\"890\" data-end=\"950\">\n<p data-start=\"892\" data-end=\"950\">Impedance Range: 25 m\u2126 to 40 M\u2126 (10% accuracy range)<\/p>\n<\/li>\n<li data-start=\"951\" data-end=\"1060\">\n<p data-start=\"953\" data-end=\"1060\">Measurement Parameters: |Z|, |Y|, \u03b8, R, X, G, B, L, C, D, Q, Complex Z, Complex Y, Vac, Iac, Vdc, Idc<\/p>\n<\/li>\n<li data-start=\"1061\" data-end=\"1119\">\n<p data-start=\"1063\" data-end=\"1119\">Built-in Bias Source: 0 V to \u00b140 V, 0 A to \u00b1100 mA<\/p>\n<\/li>\n<li data-start=\"1120\" data-end=\"1194\">\n<p data-start=\"1122\" data-end=\"1194\">Display: 10.4-inch color LCD with 4-channel \/ 4-trace touch screen<\/p>\n<\/li>\n<li data-start=\"1195\" data-end=\"1265\">\n<p data-start=\"1197\" data-end=\"1265\">Data Analysis: Equivalent circuit analysis, limit line testing<\/p>\n<\/li>\n<li data-start=\"1266\" data-end=\"1352\">\n<p data-start=\"1268\" data-end=\"1352\">Speed: Enhanced measurement speed option (Opt. 001 for 10M\/20M\/30M\/50M models)<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1354\" data-end=\"1379\">Integrated Features<\/h3>\n<ul data-start=\"1380\" data-end=\"1629\">\n<li data-start=\"1380\" data-end=\"1439\">\n<p data-start=\"1382\" data-end=\"1439\">Wide frequency range suitable for diverse testing needs<\/p>\n<\/li>\n<li data-start=\"1440\" data-end=\"1511\">\n<p data-start=\"1442\" data-end=\"1511\">Built-in DC bias for advanced material and semiconductor evaluation<\/p>\n<\/li>\n<li data-start=\"1512\" data-end=\"1567\">\n<p data-start=\"1514\" data-end=\"1567\">Comprehensive data visualization and analysis tools<\/p>\n<\/li>\n<li data-start=\"1568\" data-end=\"1629\">\n<p data-start=\"1570\" data-end=\"1629\">Upgrade flexibility to expand test frequency capabilities<\/p>\n<\/li>\n<\/ul>\n<div class=\"tm-en-blocks\"><\/div>\n<div class=\"kx\">\n<div class=\"block faq\">\n<div class=\"eyebrow\">Frequently asked questions<\/div>\n<h2 id=\"faq-e4990a\">Keysight E4990A \u2014 frequently asked questions<\/h2>\n<details>\n<summary>Where can I buy a genuine Keysight E4990A in Vietnam?<\/summary>\n<div class=\"a\">Techmaster Electronics is an authorised Keysight Technologies distributor in Vietnam. We supply the Keysight E4990A Impedance Analyzer as 100% genuine equipment with CO\/CQ documents, engineering advice and full lifecycle support. Call +84 908 173 345 for a quote.<\/div>\n<\/details>\n<details>\n<summary>How much does the Keysight E4990A cost?<\/summary>\n<div class=\"a\">The E4990A is configured to order, so options and accessories change the price and Techmaster quotes each requirement individually. Send your requirement at https:\/\/techmaster.com.vn\/en\/contact\/ or call +84 908 173 345 for a same-day quote.<\/div>\n<\/details>\n<details>\n<summary>Is the Keysight E4990A covered by warranty and calibration?<\/summary>\n<div class=\"a\">Yes. The Keysight E4990A Impedance Analyzer carries the Keysight manufacturer warranty, and Techmaster provides ISO\/IEC 17025 calibration, repair and scheduled maintenance in Vietnam.<\/div>\n<\/details>\n<\/div>\n<div class=\"cta\">\n<h3>Request a quote for the Keysight E4990A Impedance Analyzer<\/h3>\n<p>Techmaster engineers advise on the configuration and quote the same day.<\/p>\n<p><a class=\"b1\" href=\"tel:0908173345\">\ud83d\udcde +84 908 173 345<\/a><a class=\"b2\" href=\"https:\/\/techmaster.com.vn\/en\/contact\/\">Request a quote<\/a><\/p>\n<\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"@id\": \"https:\/\/techmaster.com.vn\/en\/keysight-e4990a-impedance-analyzer\/#faq\", \"inLanguage\": \"en-US\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Where can I buy a genuine Keysight E4990A in Vietnam?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Techmaster Electronics is an authorised Keysight Technologies distributor in Vietnam. We supply the Keysight E4990A Impedance Analyzer as 100% genuine equipment with CO\/CQ documents, engineering advice and full lifecycle support. Call +84 908 173 345 for a quote.\"}}, {\"@type\": \"Question\", \"name\": \"How much does the Keysight E4990A cost?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The E4990A is configured to order, so options and accessories change the price and Techmaster quotes each requirement individually. Send your requirement at https:\/\/techmaster.com.vn\/en\/contact\/ or call +84 908 173 345 for a same-day quote.\"}}, {\"@type\": \"Question\", \"name\": \"Is the Keysight E4990A covered by warranty and calibration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The Keysight E4990A Impedance Analyzer carries the Keysight manufacturer warranty, and Techmaster provides ISO\/IEC 17025 calibration, repair and scheduled maintenance in Vietnam.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<h3>Highlight:<\/h3>\n<ul>\n<li>Five upgradable frequency options; 20 Hz to 10\/20\/30\/50\/120 MHz<\/li>\n<li>Basic impedance measurement accuracy of \u00b10.08% (\u00b10.045%, typ)<\/li>\n<li>25 m\u2126 to 40 M\u2126 wide impedance measurement range (10% measurement accuracy range)<\/li>\n<li>Measurement parameters: |Z|, |Y|, \u03b8, R, X, G, B, L, C, D, Q, Complex Z, Complex Y, Vac, Iac, Vdc, Idc<\/li>\n<li>Built-in DC bias range: 0 V to \u00b140 V, 0 A to \u00b1100 mA<\/li>\n<li>Enhanced measurement speed option (option 001, for 10M\/20M\/30M\/50M options only)<\/li>\n<li>4-channel and 4-trace on 10.4-inch color LCD with touch screen<\/li>\n<li>Data analysis function: Equivalent circuit analysis, limit line test<\/li>\n<\/ul>\n<p><span id=\"input_part_0\" class=\"\" data-mention=\"&lt;a href=&quot;&quot; target=&quot;&quot;&quot;&quot; class=&quot;button alert is-&quot;alert&quot; is-&quot;medium&quot;&quot;  &gt;\n    &lt;span&gt;&quot;E4990A&lt;\/span&gt;\n  &lt;\/a&gt;\n\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/08\/E4990A-Impedance-Analyzer.pdf\" class=\"button alert is-alert is-medium\"  >\n    <span>E4990A Impedance Analyzer<\/span>\n  <\/a>\n<\/span><\/p>\n","protected":false},"featured_media":188255,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[277],"product_tag":[],"class_list":{"0":"post-188260","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-lcr-impedance-meters","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - 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