{"id":9652,"date":"2026-07-05T08:30:08","date_gmt":"2026-07-05T08:30:08","guid":{"rendered":"https:\/\/ic-vendor.com\/stf701-lf-t7\/"},"modified":"2026-07-05T08:30:08","modified_gmt":"2026-07-05T08:30:08","slug":"stf701-lf-t7","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/stf701-lf-t7\/","title":{"rendered":"STF701-LF-T7"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The STF701-LF-T7 is an EMI filter with integrated TVS diode array from Protek Devices, designed for EMI filtering and ESD protection of high-speed signal lines. This T-filter configuration provides both common-mode and differential-mode noise filtering along with IEC 61000-4-2 compliant ESD protection (15kV air discharge, 8kV contact discharge). The LF-T7 suffix denotes lead-free construction in a SOT-23-6 package, suitable for protecting USB, HDMI, and other high-speed interface lines.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Filter Configuration<\/td>\nT-Filter (series inductor + shunt TVS)<\/td>\n<\/tr>\n
ESD Protection (Air)<\/td>\n\u00b115 kV (IEC 61000-4-2)<\/td>\n<\/tr>\n
ESD Protection (Contact)<\/td>\n\u00b18 kV (IEC 61000-4-2)<\/td>\n<\/tr>\n
Clamping Voltage<\/td>\n12 V (Typ) @ Ipp=1A<\/td>\n<\/tr>\n
Capacitance<\/td>\n10 pF (Typ) per line<\/td>\n<\/tr>\n
Channel Count<\/td>\n1<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-6<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C \u81f3 +150\u00b0C<\/td>\n<\/tr>\n
Lead-Free<\/td>\nYes (LF suffix)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated T-filter with TVS diode for combined EMI\/ESD protection<\/li>\n

IEC 61000-4-2 Level 4 ESD protection (15kV air, 8kV contact)<\/li>\n
  • Low capacitance of 10pF per line for high-speed signal compatibility<\/li>\n
  • Compact SOT-23-6 package for space-constrained designs<\/li>\n
  • Lead-free construction meeting RoHS requirements<\/li>\n
  • Bidirectional TVS protection for AC signal compatibility<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • USB 2.0\/3.0 port ESD protection and EMI filtering<\/li>\n
    • HDMI and DisplayPort interface protection<\/li>\n
    • Mobile phone connector ESD\/EMI protection<\/li>\n
    • LAN and Ethernet port surge protection<\/li>\n
    • Consumer electronics external interface protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The STF701-LF-T7 is an EMI filter with integrated TVS diode array from Protek Devices, designed for EMI filtering and ESD protection of high-speed signal lines. This T-filter configuration provides both common-mode and differential-mode noise filtering along with IEC 61000-4-2 compliant ESD protection (15kV air discharge, 8kV contact discharge). The LF-T7 suffix denotes lead-free […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[925],"chip_brand":[924],"class_list":["post-9652","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-stf701-lf-t7","chip_brand-protek"],"acf":{"brief_explanation":"EMI T-filter + TVS diode array, \u00b115kV ESD, 10pF, SOT-23-6, lead-free, Protek Devices","date_code":"","package_case":"SOT-23-6 (2.9 x 1.6 x 1.2 mm)","in_stock":15800,"datasheet":"https:\/\/www.protekdevices.com","price":"$0.12 @ 1ku","product_introduction":"The Protek Devices STF701-LF-T7 is an integrated EMI filter and TVS (Transient Voltage Suppressor) diode array designed to protect high-speed signal lines from both electromagnetic interference and electrostatic discharge events. The T-filter topology combines series impedance elements (inductors\/resistors) with shunt TVS diodes to attenuate high-frequency noise while simultaneously clamping transient voltage spikes. The device provides IEC 61000-4-2 Level 4 ESD protection capable of withstanding \u00b115kV air discharge and \u00b18kV contact discharge. With a low 10pF typical capacitance per line, the STF701 maintains signal integrity on high-speed interfaces up to several hundred MHz. The LF suffix confirms lead-free RoHS-compliant construction, and the T7 suffix specifies the SOT-23-6 package configuration.","working_principle":"The STF701-LF-T7 combines two protective functions in a single device. The T-filter section uses series impedance elements (thin-film resistors or integrated inductors) to create a low-pass filter that attenuates high-frequency EMI noise above the signal bandwidth. The shunt TVS diodes provide transient voltage suppression by clamping voltage spikes from ESD events to safe levels. When an ESD strike occurs, the TVS diode rapidly avalanches, creating a low-impedance path that diverts the transient current away from the protected IC. The T-filter's series elements limit the current through the TVS diode while also filtering the residual high-frequency energy. The bidirectional TVS configuration protects against both positive and negative polarity transients without distorting AC-coupled signals.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>I\/O 1<\/td>I\/O<\/td>Protected signal line (line side)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground connection<\/td><\/tr>
      3<\/td>I\/O 2<\/td>I\/O<\/td>Protected signal line (IC side)<\/td><\/tr>
      4<\/td>I\/O 3<\/td>I\/O<\/td>Protected signal line (IC side)<\/td><\/tr>
      5<\/td>GND<\/td>Power<\/td>Ground connection<\/td><\/tr>
      6<\/td>I\/O 4<\/td>I\/O<\/td>Protected signal line (line side)<\/td><\/tr><\/table>","application_scenarios":"
      • USB 2.0\/3.0 data line ESD protection and EMI filtering<\/li>
      • HDMI and DisplayPort interface transient protection<\/li>
      • Mobile device connector ESD\/EMI suppression<\/li>
      • Ethernet PHY MDI interface protection<\/li>
      • Consumer electronics external port protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Semtech<\/td>STF701TG<\/td>SC-88-6<\/td>Original T-filter + TVS, same function<\/td><\/tr>
        ON Semiconductor<\/td>NUP4202MR6<\/td>SOT-23-6<\/td>Quad TVS array, similar ESD protection<\/td><\/tr>
        TI<\/td>TPD4E05U06<\/td>USON-10<\/td>Quad-channel ESD protection<\/td><\/tr>
        Nexperia<\/td>PRTR5V0U2X<\/td>SOT-143<\/td>Dual TVS + Zener for USB<\/td><\/tr>
        STMicroelectronics<\/td>USB6B1<\/td>SO-8<\/td>Quad TVS for USB protection<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/9652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=9652"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/9652\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=9652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=9652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=9652"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}