{"id":7435,"date":"2026-06-24T05:11:13","date_gmt":"2026-06-24T05:11:13","guid":{"rendered":"https:\/\/materialparts.com\/az431bn-atre1\/"},"modified":"2026-06-24T05:11:13","modified_gmt":"2026-06-24T05:11:13","slug":"az431bn-atre1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/az431bn-atre1\/","title":{"rendered":"AZ431BN-ATRE1"},"content":{"rendered":"

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

The AZ431BN-ATRE1 from Diodes Incorporated is a precision programmable shunt voltage reference with 2.495V internal reference, +\/-0.5% initial accuracy, and 1-100mA cathode current in a SOT-23-3 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Reference Voltage<\/td>\n2.495 V (internal, programmable to 36V)<\/td>\n<\/tr>\n
Initial Accuracy<\/td>\n+\/-0.5% (B grade)<\/td>\n<\/tr>\n
Temperature Drift<\/td>\n11 mV max over -40 to +85\u00b0C<\/td>\n<\/tr>\n
Cathode Current Range<\/td>\n1 mA to 100 mA<\/td>\n<\/tr>\n
Dynamic Impedance<\/td>\n0.3 Ohm typical<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-3<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • TL431 B-grade equivalent from Diodes Inc with +\/-0.5% accuracy in SOT-23-3<\/li>\n
  • Tighter 11mV max drift for precision SMPS feedback applications<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Precision SMPS feedback and voltage monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AZ431BN-ATRE1 from Diodes Incorporated is a precision programmable shunt voltage reference with 2.495V internal reference, +\/-0.5% initial accuracy, and 1-100mA cathode current in a SOT-23-3 package. Key Specifications Reference Voltage 2.495 V (internal, programmable to 36V) Initial Accuracy +\/-0.5% (B grade) Temperature Drift 11 mV max over -40 to +85\u00b0C Cathode Current […]<\/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":[13,32],"tags":[],"chip_brand":[193],"class_list":["post-7435","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-diodes-inc"],"acf":{"brief_explanation":"TL431 B-grade equiv shunt Vref, +\/-0.5%, 11mV drift, SOT-23-3","date_code":"","package_case":"SOT-23-3 (2.90 x 1.30 x 1.00 mm)","in_stock":5100,"datasheet":"https:\/\/www.diodes.com\/assets\/Datasheets\/AZ431A.pdf","price":"$0.20 @ 1ku","product_introduction":"The AZ431BN-ATRE1 from Diodes Incorporated is the B-grade (precision) version of the AZ431 TL431-equivalent programmable shunt voltage reference in a SOT-23-3 package. The B grade provides +\/-0.5% initial accuracy with 11mV maximum voltage drift over the industrial temperature range (-40\u00b0C to +85\u00b0C), offering tighter regulation than the A-grade AZ431AN for applications requiring more precise voltage control. The device is pin-compatible and functionally equivalent to the TI TL431BIDBZR, providing a cost-competitive second-source option. The 2.495V internal reference is programmable to 36V with two external resistors. The 0.3 Ohm dynamic impedance and 1-100mA cathode current range are compatible with standard TL431 application circuits.","working_principle":"Identical to the AZ431AN-ATRE1 and TL431. The B grade provides tighter initial accuracy (+\/-0.5% vs +\/-1%) and lower temperature drift (11mV vs 14mV max) through additional manufacturing screening. See TL431ACDBZR entry for complete working principle.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>REF<\/td>Reference input (2.495V threshold)<\/td><\/tr>
      2<\/td>Anode<\/td>Ground<\/td><\/tr>
      3<\/td>Cathode<\/td>Output\/shunt (1-100mA)<\/td><\/tr><\/table>","application_scenarios":"
      • Precision SMPS feedback with +\/-0.5% accuracy in industrial applications<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TL431BIDBZR<\/td>SOT-23-3<\/td>Original TL431 B-grade<\/td><\/tr>
        Diodes<\/td>AZ431AN-ATRE1<\/td>SOT-23-3<\/td>A-grade, lower cost<\/td><\/tr>
        onsemi<\/td>NCP431BVSNT1G<\/td>SOT-23-3<\/td>B-grade, pin-compatible<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=7435"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7435\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7435"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}