{"id":9682,"date":"2026-07-05T09:07:21","date_gmt":"2026-07-05T09:07:21","guid":{"rendered":"https:\/\/materialparts.com\/pk-27n36psq\/"},"modified":"2026-07-05T09:07:21","modified_gmt":"2026-07-05T09:07:21","slug":"pk-27n36psq","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pk-27n36psq\/","title":{"rendered":"PK-27N36PSQ"},"content":{"rendered":"

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

The PK-27N36PSQ from Murata is a 27mm diameter piezoelectric buzzer element from the PK series. Unlike buzzers with built-in oscillators, this is a bare piezo transducer element that requires an external AC drive signal at its resonant frequency (3.6kHz) for maximum sound output. The 27mm disc provides a large radiating area for high SPL output in alarm and indicator applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
Disc Diameter<\/td>\n27 mm<\/td>\n<\/tr>\n
Resonant Frequency<\/td>\n3.6 kHz (approx)<\/td>\n<\/tr>\n
Max Operating Voltage<\/td>\n30 Vp-p<\/td>\n<\/tr>\n
Drive Circuit<\/td>\nExternal<\/td>\n<\/tr>\n
Mounting<\/td>\nPCB pin mount<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-30C to +70C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Large 27mm disc for high SPL alarm output<\/li>\n
  • External drive allows flexible frequency and tone pattern control<\/li>\n
  • Low power consumption compared to electromagnetic buzzers<\/li>\n
  • Self-oscillation capable with simple external circuit<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial alarm and warning sound generators<\/li>\n
    • Fire and security system audible alerts<\/li>\n
    • Medical equipment status beeps<\/li>\n
    • Automotive dashboard warning indicators<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PK-27N36PSQ from Murata is a 27mm diameter piezoelectric buzzer element from the PK series. Unlike buzzers with built-in oscillators, this is a bare piezo transducer element that requires an external AC drive signal at its resonant frequency (3.6kHz) for maximum sound output. The 27mm disc provides a large radiating area for high […]<\/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":[965],"chip_brand":[202],"class_list":["post-9682","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-pk-27n36psq","chip_brand-murata"],"acf":{"brief_explanation":"27mm piezo buzzer element, 3.6kHz, external drive, 30Vp-p, Murata PK","date_code":"","package_case":"27mm disc, PCB pin mount","in_stock":13459,"datasheet":"https:\/\/www.murata.com\/en-global\/products\/sound\/sounder\/piezo","price":"","product_introduction":"The Murata PK-27N36PSQ is a 27mm diameter piezoelectric buzzer element from the PK series. As an external-drive piezo transducer, it requires an AC drive signal at or near its 3.6kHz resonant frequency for maximum sound pressure output. The 27mm disc provides a large radiating area that enables high SPL output suitable for alarm and warning applications in industrial, security, and medical environments. The external drive approach gives the system designer full control over the drive frequency and modulation pattern, enabling multi-tone alerts and variable-volume operation. Common drive circuits include 555 timer oscillators, MCU PWM outputs, or dedicated buzzer driver ICs.","working_principle":"The PK-27N36PSQ consists of a piezoelectric ceramic disc bonded to a metal diaphragm. When an AC voltage at the resonant frequency (3.6kHz) is applied across the ceramic element, the inverse piezoelectric effect causes the disc to flex, generating sound waves. Maximum SPL output is achieved at the mechanical resonance of the disc assembly where the vibration amplitude is largest. The external drive circuit must generate the AC excitation signal, typically using a 555 timer, MCU PWM output, or dedicated buzzer driver IC.","pin_description":"
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>+<\/td>Input<\/td>Drive terminal (positive)<\/td><\/tr>
      2<\/td>-<\/td>Input<\/td>Drive terminal (ground)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial alarm and warning sound generators<\/li>
      • Fire and security system audible alerts<\/li>
      • Medical equipment status beeps<\/li>
      • Automotive dashboard warning indicators<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Murata<\/td>PK-35N35PHQ<\/td>35mm<\/td>Larger disc, higher SPL<\/td><\/tr>
        Murata<\/td>PKM22EPPH2001<\/td>SMD<\/td>Self-drive piezo buzzer, SMD<\/td><\/tr>
        PUI Audio<\/td>AT-2737-TF-LW100-R<\/td>Panel<\/td>Similar piezo transducer<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9682","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=9682"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9682\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9682"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}