{"id":2449,"date":"2026-05-20T04:48:00","date_gmt":"2026-05-20T04:48:00","guid":{"rendered":"https:\/\/materialparts.com\/hx1188fnl\/"},"modified":"2026-05-20T04:48:00","modified_gmt":"2026-05-20T04:48:00","slug":"hx1188fnl","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/hx1188fnl\/","title":{"rendered":"HX1188FNL"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The HX1188FNL from Pulse Electronics is a single-port 100Base-TX Ethernet transformer\/choke with 1CT:1CT turns ratio, designed for LAN applications. It provides 1.5kV isolation, 350uH open-circuit inductance, and meets IEEE 802.3 specifications in a 16-terminal gull-wing SMD package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\nPulse Electronics<\/td>\n<\/tr>\n
Transformer Type<\/td>\n100Base-TX Single Port<\/td>\n<\/tr>\n
Turns Ratio<\/td>\n2(1CT:1CT)<\/td>\n<\/tr>\n
Inductance (OCL)<\/td>\n350uH @ 100kHz, 8mA DC bias<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n1500Vrms (50Hz, 60s)<\/td>\n<\/tr>\n
Insertion Loss<\/td>\n1.0dB max @ 1-100MHz<\/td>\n<\/tr>\n
Return Loss<\/td>\n-18dB min @ 5MHz<\/td>\n<\/tr>\n
Crosstalk<\/td>\n-62dB min @ 1-100MHz<\/td>\n<\/tr>\n
CMRRR<\/td>\n-32dB typ @ 100MHz<\/td>\n<\/tr>\n
Number of Ports<\/td>\nSingle<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n16-pin SMD Gull Wing<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Single-port 100Base-TX Ethernet transformer<\/li>\n
  • Center-tapped 1:1 turns ratio for TX and RX channels<\/li>\n
  • High isolation: 1500Vrms<\/li>\n
  • Meets IEEE 802.3 specifications<\/li>\n
  • Low insertion loss: 1.0dB max<\/li>\n
  • Excellent crosstalk performance: -62dB min<\/li>\n
  • Good common-mode rejection: -32dB typical<\/li>\n
  • Open frame construction for low profile<\/li>\n
  • SMD gull-wing package for automated assembly<\/li>\n
  • RoHS-6 compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 100Base-TX Ethernet PHY interface<\/li>\n
    • LAN on motherboard (LOM) designs<\/li>\n
    • Network interface cards (NIC)<\/li>\n
    • Embedded Ethernet connectivity<\/li>\n
    • Industrial Ethernet systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The HX1188FNL from Pulse Electronics is a single-port 100Base-TX Ethernet transformer\/choke with 1CT:1CT turns ratio, designed for LAN applications. It provides 1.5kV isolation, 350uH open-circuit inductance, and meets IEEE 802.3 specifications in a 16-terminal gull-wing SMD package. Key Specifications Manufacturer Pulse Electronics Transformer Type 100Base-TX Single Port Turns Ratio 2(1CT:1CT) Inductance (OCL) 350uH […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[136],"class_list":["post-2449","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-vishay"],"acf":{"brief_explanation":"100Base-TX single-port Ethernet transformer, 1CT:1CT, 1.5kV isolation, 350uH OCL, 16-pin SMD","date_code":"","package_case":"16-pin SMD Gull Wing (12.7 x 9.09 x 5.99 mm)","in_stock":4120,"datasheet":"https:\/\/productfinder.pulseeng.com\/productSearch\/HX1188","price":"$2.68 @ 1ku","product_introduction":"The Pulse Electronics HX1188FNL is a single-port 100Base-TX Ethernet transformer\/choke designed for Local Area Network (LAN) applications. It provides the necessary impedance matching, signal coupling, and electrical isolation between the Ethernet PHY transceiver and the RJ-45 connector. The device features a center-tapped 1:1 turns ratio for both transmit and receive channels, with 350uH open-circuit inductance measured at 100kHz with 8mA DC bias. The transformer provides 1500Vrms isolation voltage and meets all IEEE 802.3 electrical specifications for 100Base-TX operation. With crosstalk performance of -62dB minimum and common-mode rejection of -32dB typical, it ensures reliable signal integrity in noisy environments. The 16-terminal gull-wing SMD package enables automated pick-and-place assembly.","working_principle":"The HX1188FNL operates as a signal coupling and isolation transformer for 100Base-TX Ethernet: 1) Impedance Matching: The 1:1 turns ratio transformers match the impedance between the PHY transceiver (100Ohm differential) and the twisted-pair cable (100Ohm characteristic impedance), minimizing signal reflections. 2) Galvanic Isolation: The transformer provides 1500Vrms electrical isolation between the Ethernet controller side and the cable side, protecting equipment from ground loops, common-mode voltages, and transient events per IEEE 802.3 requirements. 3) Common-Mode Rejection: The center-tapped windings allow connection of Bob Smith termination resistors (75Ohm to ground via high-voltage capacitors) that absorb common-mode noise, improving EMI performance. 4) Signal Coupling: The transformer magnetically couples the differential transmit and receive signals between the PHY and the cable, passing the high-frequency data signals while blocking DC and low-frequency common-mode interference.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>TD+<\/td>Input<\/td>Transmit positive (PHY side)<\/td><\/tr>
      2<\/td>TCT<\/td>Center Tap<\/td>Transmit center tap (PHY side)<\/td><\/tr>
      3<\/td>TD-<\/td>Input<\/td>Transmit negative (PHY side)<\/td><\/tr>
      4-6<\/td>NC<\/td>-<\/td>No connection<\/td><\/tr>
      7<\/td>RX-<\/td>Output<\/td>Receive negative (PHY side)<\/td><\/tr>
      8<\/td>RCT<\/td>Center Tap<\/td>Receive center tap (PHY side)<\/td><\/tr>
      9<\/td>RX+<\/td>Output<\/td>Receive positive (PHY side)<\/td><\/tr>
      10-11<\/td>NC<\/td>-<\/td>No connection<\/td><\/tr>
      12<\/td>TX+<\/td>Output<\/td>Transmit positive (cable side)<\/td><\/tr>
      13<\/td>TX-<\/td>Output<\/td>Transmit negative (cable side)<\/td><\/tr>
      14<\/td>NC<\/td>-<\/td>No connection<\/td><\/tr>
      15<\/td>RX+<\/td>Input<\/td>Receive positive (cable side)<\/td><\/tr>
      16<\/td>RX-<\/td>Input<\/td>Receive negative (cable side)<\/td><\/tr><\/table>","application_scenarios":"
      • 100Base-TX Ethernet PHY to RJ-45 interface in embedded systems<\/li>
      • LAN on motherboard (LOM) designs for desktop and server platforms<\/li>
      • Network interface cards (NIC) for 100Mbps Ethernet<\/li>
      • Industrial Ethernet equipment requiring galvanic isolation<\/li>
      • Set-top boxes and IoT gateways with Ethernet connectivity<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Pulse<\/td>HX1188FNLT<\/td>16-pin SMD<\/td>Tape and reel version<\/td><\/tr>
        Pulse<\/td>HX1188NL<\/td>16-pin SMD<\/td>Narrow body version (7.11mm width)<\/td><\/tr>
        TDK<\/td>ACT45R-101-2P-TL003<\/td>SMD<\/td>100Base-TX transformer<\/td><\/tr>
        Belfuse<\/td>0826-1G1T-33-F<\/td>SMD<\/td>Single port 10\/100 transformer<\/td><\/tr>
        YCL<\/td>RH3129E<\/td>SMD<\/td>100Base-TX compatible<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=2449"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2449\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2449"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2449"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}