{"id":9604,"date":"2026-07-04T10:33:16","date_gmt":"2026-07-04T10:33:16","guid":{"rendered":"https:\/\/ic-vendor.com\/st-03ch\/"},"modified":"2026-07-04T10:33:16","modified_gmt":"2026-07-04T10:33:16","slug":"st-03ch","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/st-03ch\/","title":{"rendered":"ST-03CH"},"content":{"rendered":"

Productos<\/h2>\n

The ST-03CH from Soberton is a magnetic surface-mount buzzer transducer designed for externally driven audio alert applications. Operating at 2.73 kHz with a rated voltage of 5 V and producing 88 dB sound pressure level at 10 cm, it features a compact 8.5 x 8.5 x 3.5 mm SMD footprint suitable for space-constrained PCB designs in consumer and industrial electronics.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/td>\nMagnetic, Externally Driven Transducer<\/td>\n<\/tr>\n
Rated Voltage<\/td>\n5 V (range 4\u20136 V)<\/td>\n<\/tr>\n
Frequency<\/td>\n2.73 kHz<\/td>\n<\/tr>\n
Sound Pressure Level<\/td>\n88 dB @ 5 V, 10 cm<\/td>\n<\/tr>\n
Current Consumption<\/td>\n100 mA<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-30\u00b0C to 70\u00b0C<\/td>\n<\/tr>\n
Dimensions<\/td>\n8.5 x 8.5 x 3.5 mm<\/td>\n<\/tr>\n
Mounting<\/td>\nSurface Mount (Solder Pads)<\/td>\n<\/tr>\n
Port Location<\/td>\nLado<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Compact 8.5 x 8.5 mm SMD footprint saves board space<\/li>\n
  • Magnetic transducer with externally driven design for flexible frequency control<\/li>\n
  • High 88 dB SPL output for clear audio alerts in noisy environments<\/li>\n
  • Side sound port for design flexibility in enclosure placement<\/li>\n
  • Wide voltage range (4\u20136 V) for design margin<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Home appliances and kitchen equipment alert beeps<\/li>\n
    • Medical device alarms and patient monitoring alerts<\/li>\n
    • Industrial control panel status indicators<\/li>\n
    • Automotive dashboard warning tones<\/li>\n
    • Security system keypad feedback and alarm signals<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ST-03CH from Soberton is a magnetic surface-mount buzzer transducer designed for externally driven audio alert applications. Operating at 2.73 kHz with a rated voltage of 5 V and producing 88 dB sound pressure level at 10 cm, it features a compact 8.5 x 8.5 x 3.5 mm SMD footprint suitable for space-constrained […]<\/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":[37,13],"tags":[853],"chip_brand":[852],"class_list":["post-9604","post","type-post","status-publish","format-standard","hentry","category-dynamic-random-access-memory-dram","category-integrated-circuits-ics","tag-st-03ch","chip_brand-soberton"],"acf":{"brief_explanation":"Magnetic SMD buzzer transducer, 2.73 kHz, 5V, 88 dB @ 10cm, 8.5x8.5x3.5mm","date_code":"","package_case":"8.5 x 8.5 x 3.5 mm SMD","in_stock":11105,"datasheet":"https:\/\/www.soberton.com\/product\/st-03ch\/","price":"$1.63 @ 1000+","product_introduction":"The ST-03CH from Soberton Inc. is a magnetic surface-mount audio transducer designed for externally driven buzzer applications. Operating at a resonant frequency of 2.73 kHz with a rated voltage of 5 V, it produces a sound pressure level of 88 dB at 10 cm, making it suitable for audible alert and notification functions in consumer and industrial electronics. The externally driven design allows the driving circuit to control the frequency and duty cycle of the output tone, providing flexibility for multi-tone signaling patterns. Its compact 8.5 x 8.5 x 3.5 mm footprint with side sound port enables flexible PCB layout in space-constrained designs.","working_principle":"The ST-03CH operates as a magnetic transducer where an electromagnetic coil drives a metallic diaphragm. When an alternating current at the resonant frequency (2.73 kHz) is applied to the coil, the resulting magnetic field causes the diaphragm to vibrate, producing sound waves. As an externally driven device, the user's circuit must provide the drive signal \u2014 this allows variable frequency and on\/off modulation control. The magnetic circuit is optimized for maximum sound pressure at the resonant frequency, where the diaphragm amplitude is largest. The 100 mA current draw reflects the energy required to drive the magnetic coil at rated voltage.","pin_description":"
      Pin<\/th>Function<\/th><\/tr>
      Pad 1 (+)<\/td>Positive terminal \u2014 connect to drive signal via transistor or MCU GPIO<\/td><\/tr>
      Pad 2 (-)<\/td>Negative terminal \u2014 connect to ground<\/td><\/tr><\/table>","application_scenarios":"
      • Home appliance control panel providing distinct beep patterns for different status alerts<\/li>
      • Portable medical device alarm generating audible patient alerts at 88 dB in hospital settings<\/li>
      • Industrial HMI panel with multi-tone keypad feedback using externally driven frequency control<\/li>
      • Security system siren board with warble-tone pattern for intrusion alert<\/li>
      • Automotive instrument cluster warning buzzer for seatbelt and door-open reminders<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        ST-04CH<\/td>Soberton<\/td>Higher SPL, larger footprint<\/td><\/tr>
        PKM13EPYH4000-A0<\/td>Murata<\/td>Piezo buzzer, 4 kHz, self-drive option<\/td><\/tr>
        AI-3035-TWT-12V-R<\/td>Projekt Electronik<\/td>Magnetic buzzer, 12 V rated<\/td><\/tr>
        CMT-4023S-SMT-TR<\/td>PUI Audio<\/td>Magnetic transducer, 2.4 kHz<\/td><\/tr>
        SMB-01C<\/td>Soberton<\/td>Smaller 6 mm magnetic buzzer alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/9604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=9604"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/9604\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=9604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=9604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=9604"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=9604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}