{"id":10507,"date":"2026-07-20T04:28:00","date_gmt":"2026-07-20T04:28:00","guid":{"rendered":"https:\/\/ic-vendor.com\/1n4148ws-2\/"},"modified":"2026-07-20T04:28:00","modified_gmt":"2026-07-20T04:28:00","slug":"1n4148ws-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/1n4148ws-2\/","title":{"rendered":"1N4148WS"},"content":{"rendered":"

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

The onsemi 1N4148WS is a high-speed small-signal silicon switching diode in a compact SOD-323 surface-mount package. Rated at 75V reverse voltage and 150 mA forward current, it features fast reverse recovery time of 4 ns, low capacitance of 4 pF, and low forward voltage. The device is ideal for high-speed switching, signal routing, and general-purpose rectification in space-constrained circuits.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Diode Type<\/td>\nSmall Signal Switching Diode<\/td>\n<\/tr>\n
Reverse Voltage (VR)<\/td>\n75 V<\/td>\n<\/tr>\n
Forward Current (IF)<\/td>\n150 mA<\/td>\n<\/tr>\n
Forward Voltage (VF)<\/td>\n1.0 V @ 10 mA (Typ)<\/td>\n<\/tr>\n
Reverse Recovery Time (trr)<\/td>\n4 ns (Typ)<\/td>\n<\/tr>\n
Total Capacitance (CT)<\/td>\n4 pF @ 0V, 1 MHz (Typ)<\/td>\n<\/tr>\n
Reverse Current (IR)<\/td>\n25 nA @ 75V (Max @ 25\u00b0C)<\/td>\n<\/tr>\n
\u529f\u7387\u8017\u6563<\/td>\n200 mW<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-65\u00b0C to +150\u00b0C (TJ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOD-323<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultra-fast switching with 4 ns typical reverse recovery time<\/li>\n
  • Low junction capacitance of 4 pF for minimal signal distortion<\/li>\n
  • Compact SOD-323 package (1.7 x 1.25 mm) for high-density boards<\/li>\n
  • Low reverse leakage current of 25 nA at rated voltage<\/li>\n
  • Wide operating temperature range from -65\u00b0C to +150\u00b0C<\/li>\n
  • Industry-standard 1N4148 equivalent in surface-mount format<\/li>\n
  • Pb-Free, RoHS compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • High-speed signal switching and routing<\/li>\n
    • Logic gate and protection circuits<\/li>\n
    • Reverse current blocking in power management<\/li>\n
    • Clipping and clamping circuits<\/li>\n
    • General-purpose rectification in consumer electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi 1N4148WS is a high-speed small-signal silicon switching diode in a compact SOD-323 surface-mount package. Rated at 75V reverse voltage and 150 mA forward current, it features fast reverse recovery time of 4 ns, low capacitance of 4 pF, and low forward voltage. The device is ideal for high-speed switching, signal routing, […]<\/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":[57,13],"tags":[1811],"chip_brand":[144],"class_list":["post-10507","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","tag-1n4148ws","chip_brand-on"],"acf":{"brief_explanation":"High-speed switching diode, 75V, 150mA, 4ns trr, 4pF, SOD-323, 1N4148 SMD equivalent","date_code":"","package_case":"SOD-323 1.70 x 1.25 x 0.85 mm","in_stock":14567,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/1N4148WS-D.PDF","price":"$0.018 @ 3ku","product_introduction":"The onsemi 1N4148WS is a high-speed small-signal silicon switching diode in a compact SOD-323 surface-mount package, representing the surface-mount equivalent of the industry-standard 1N4148 through-hole diode. Rated at 75V reverse voltage and 150 mA continuous forward current, the device features an extremely fast reverse recovery time of 4 ns (typical), making it ideal for high-speed digital and analog switching applications. The low junction capacitance of 4 pF minimizes signal distortion in RF and high-frequency circuits. The device achieves a low forward voltage of 1.0V at 10 mA and exhibits very low reverse leakage of 25 nA at rated voltage (25\u00b0C). The compact SOD-323 package (1.7 x 1.25 x 0.85 mm) enables high-density PCB designs. The 1N4148WS operates over the full -65\u00b0C to +150\u00b0C junction temperature range and is Pb-Free and RoHS compliant.","working_principle":"The 1N4148WS is a standard silicon PN junction switching diode. In forward bias, current flows from anode to cathode when the forward voltage exceeds approximately 0.7V (silicon junction potential), with a forward voltage drop of 1.0V at 10 mA. The N-type and P-type regions are relatively lightly doped to achieve a higher breakdown voltage (75V) while maintaining fast switching characteristics. When the diode is rapidly reverse-biased after conducting, stored minority carriers in the junction region must be swept out before the diode blocks current \u2014 this reverse recovery time (trr) is only 4 ns, achieved through gold doping or equivalent lifetime-killing techniques. The low junction capacitance of 4 pF results from the small junction area, which also contributes to the fast switching speed. In reverse bias, only a small leakage current of 25 nA flows at rated voltage, increasing with temperature. The 200 mW power dissipation is limited by the thermal resistance of the small SOD-323 package.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Cathode<\/td>Terminal<\/td>Marked by band \u2014 connect to positive side for reverse blocking<\/td><\/tr>\n
      2<\/td>Anode<\/td>Terminal<\/td>Connect to negative side \u2014 current flows anode to cathode in forward bias<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • High-speed digital signal routing and steering in logic circuits<\/li>\n
      • Reverse current blocking in battery-powered devices<\/li>\n
      • Signal clipping and clamping in analog front-end circuits<\/li>\n
      • Freewheeling diode for small relay and solenoid coils<\/li>\n
      • Protection diode for MCU GPIO pins against reverse voltage<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>1N4148W<\/td>SOD-123<\/td>Larger package, same electrical specs<\/td><\/tr>\n
        Nexperia<\/td>1N4148WS<\/td>SOD-323<\/td>Pin-to-pin compatible equivalent<\/td><\/tr>\n
        Vishay<\/td>1N4148WS<\/td>SOD-323<\/td>Equivalent switching diode<\/td><\/tr>\n
        onsemi<\/td>BAW56LT1G<\/td>SOT-23<\/td>Dual diode common cathode alternative<\/td><\/tr>\n
        NXP<\/td>BAS16<\/td>SOD-323<\/td>Equivalent high-speed switching diode<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10507","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=10507"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10507\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10507"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10507"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10507"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10507"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}