{"id":9693,"date":"2026-07-05T09:38:18","date_gmt":"2026-07-05T09:38:18","guid":{"rendered":"https:\/\/materialparts.com\/at-3237-tf-lw140-r-2\/"},"modified":"2026-07-05T09:38:18","modified_gmt":"2026-07-05T09:38:18","slug":"at-3237-tf-lw140-r-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/at-3237-tf-lw140-r-2\/","title":{"rendered":"AT-3237-TF-LW140-R"},"content":{"rendered":"<h2>\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n<p>The AT-3237-TF-LW140-R is a piezoelectric transducer (buzzer) manufactured by PUI Audio (Projects Unlimited). It features a resonant frequency of 3,700 Hz \u00b1500 Hz and produces a minimum sound pressure level of 98 dBA at 10cm with 12 Vp-p drive. The device is designed for panel mounting with wire lead terminals.<\/p>\n<h2>\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n<ul>\n<li>Rated Voltage: 12 Vp-p<\/li>\n<li>Operating Voltage: 3 Vp-p ~ 28 Vp-p<\/li>\n<li>Rated Current: 7mA max<\/li>\n<li>Capacitance: 20,000pF \u00b130%<\/li>\n<li>Min SPL @10cm: 98 dBA<\/li>\n<li>Resonant Frequency: 3,700 Hz \u00b1500 Hz<\/li>\n<li>Drive Circuit: External<\/li>\n<li>Mounting: Panel mount<\/li>\n<li>Lead Wires: UL1095 AWG #28<\/li>\n<li>Housing: ABS<\/li>\n<li>Operating Temperature: -30\u00b0C ~ +85\u00b0C<\/li>\n<li>Weight: 7.5g<\/li>\n<li>RoHS: Compliant<\/li>\n<\/ul>\n<h2>\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n<ul>\n<li>High SPL output (98 dBA minimum)<\/li>\n<li>External drive circuit required<\/li>\n<li>Panel mount with wire leads<\/li>\n<li>Wide operating voltage range (3-28 Vp-p)<\/li>\n<li>Compact and lightweight (7.5g)<\/li>\n<\/ul>\n<h2>\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n<ul>\n<li>Alarm and warning systems<\/li>\n<li>Industrial equipment status indicators<\/li>\n<li>Medical device alerts<\/li>\n<li>Consumer appliance notifications<\/li>\n<li>Security system audible alerts<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The AT-3237-TF-LW140-R is a piezoelectric transducer (buzzer) manufactured by PUI Audio (Projects Unlimited). It features a resonant frequency of 3,700 Hz \u00b1500 Hz and produces a minimum sound pressure level of 98 dBA at 10cm with 12 Vp-p drive. The device is designed for panel mounting with wire lead terminals. Key Specifications Rated [&hellip;]<\/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":[940],"chip_brand":[939],"class_list":["post-9693","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-at-3237-tf-lw140-r","chip_brand-pui-audio"],"acf":{"brief_explanation":"Piezo transducer\/buzzer, 3.7kHz, 98dBA @10cm, 12Vp-p, panel mount, wire leads, -30~85\u00b0C","date_code":"","package_case":"Panel mount with wire leads (7.5g)","in_stock":14237,"datasheet":"https:\/\/sg.element14.com\/pui-audio\/at-3237-tf-lw140-r\/transducer-3-7khz-100mm-98dba\/dp\/4411309","price":"$2.08 @ 160pcs","product_introduction":"The AT-3237-TF-LW140-R from PUI Audio is a high-output piezoelectric transducer producing 98dBA at 3.7kHz resonant frequency, designed for panel-mount audible alert applications.","working_principle":"The piezoelectric transducer converts electrical energy to acoustic energy through the inverse piezoelectric effect. When an AC voltage is applied across the piezoelectric element at its resonant frequency (3.7kHz), the ceramic disc vibrates at maximum amplitude, producing a loud audible tone through the ABS housing.","pin_description":"<table><tr><th>Wire<\/th><th>Color<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>Blue (F)<\/td><td>Negative terminal<\/td><\/tr><tr><td>2<\/td><td>Red (M)<\/td><td>Positive terminal<\/td><\/tr><tr><td>3<\/td><td>Black (G)<\/td><td>Ground\/shield<\/td><\/tr><\/table>","application_scenarios":"<ul><li>Industrial alarm and warning indicators<\/li><li>Medical device audible alerts<\/li><li>Security system sounders<\/li><li>Home appliance notification tones<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Freq<\/th><th>SPL<\/th><\/tr><tr><td>AT-3227-TT-LW100-R<\/td><td>PUI Audio<\/td><td>2.7kHz<\/td><td>90dBA<\/td><\/tr><tr><td>PK-27N36PSQ<\/td><td>Malory<\/td><td>3.6kHz<\/td><td>95dBA<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9693","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=9693"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9693\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9693"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9693"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}