{"id":7853,"date":"2026-06-28T02:53:07","date_gmt":"2026-06-28T02:53:07","guid":{"rendered":"https:\/\/materialparts.com\/tda2030a-2\/"},"modified":"2026-06-28T10:20:11","modified_gmt":"2026-06-28T10:20:11","slug":"tda2030a-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tda2030a-2\/","title":{"rendered":"TDA2030A"},"content":{"rendered":"

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

The TDA2030A is a 18W class-AB audio power amplifier from STMicroelectronics with 12V to 36V supply range, 0.08% THD, and short-circuit protection in a 5-pin TO-220 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Supply Voltage Range<\/td>\n\u00b16V to \u00b118V (dual) or 12V to 36V (single)<\/td>\n<\/tr>\n
Output Power<\/td>\n18W into 4\u03a9 at \u00b114V, 12W into 8\u03a9<\/td>\n<\/tr>\n
THD (at 1kHz, 8\u03a9)<\/td>\n0.08% typical at 8W<\/td>\n<\/tr>\n
Voltage Gain<\/td>\n30dB typical (open loop 80dB)<\/td>\n<\/tr>\n
Bandwidth<\/td>\n10Hz to 140kHz (open loop)<\/td>\n<\/tr>\n
Input Impedance<\/td>\n5M\u03a9 typical<\/td>\n<\/tr>\n
\u8f93\u5165\u5931\u8c03\u7535\u538b<\/td>\n2mV typical<\/td>\n<\/tr>\n
\u538b\u6446\u7387<\/td>\n8V\/\u00b5s typical<\/td>\n<\/tr>\n
Output Current (peak)<\/td>\n3.5A<\/td>\n<\/tr>\n
Thermal Shutdown<\/td>\n145\u00b0C typical<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n0\u00b0C to +150\u00b0C (junction)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nPentawatt TO-220 (5-pin)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 18W output power into 4\u03a9 load<\/li>\n
  • Very low 0.08% THD at 8W into 8\u03a9<\/li>\n
  • Wide supply voltage range: \u00b16V to \u00b118V<\/li>\n
  • Built-in thermal shutdown protection<\/li>\n
  • Short-circuit protection on all pins<\/li>\n
  • High output current: 3.5A peak<\/li>\n
  • Very high input impedance: 5M\u03a9<\/li>\n
  • Minimum external components required<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Hi-Fi audio amplifiers<\/li>\n
    • Portable and desktop speaker systems<\/li>\n
    • Car audio systems<\/li>\n
    • Guitar and instrument amplifiers<\/li>\n
    • Active speaker and subwoofer drivers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TDA2030A is a 18W class-AB audio power amplifier from STMicroelectronics with 12V to 36V supply range, 0.08% THD, and short-circuit protection in a 5-pin TO-220 package. Key Specifications Supply Voltage Range \u00b16V to \u00b118V (dual) or 12V to 36V (single) Output Power 18W into 4\u03a9 at \u00b114V, 12W into 8\u03a9 THD (at […]<\/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":[19,13],"tags":[],"chip_brand":[142],"class_list":["post-7853","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"18W class-AB audio amp, 0.08% THD, \u00b16-18V, thermal protection, TO-220-5","date_code":"","package_case":"Pentawatt TO-220-5 (10.7 x 9.1 x 4.6mm, 5-pin)","in_stock":7800,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/tda2030a.pdf","price":"$0.85 @ 1ku","product_introduction":"The TDA2030A is a monolithic class-AB audio power amplifier from STMicroelectronics capable of delivering 18W into a 4\u03a9 load at \u00b114V supply. The device features very low 0.08% total harmonic distortion at 8W output into 8\u03a9, making it suitable for hi-fi applications. The wide supply range (\u00b16V to \u00b118V or 12V to 36V single-ended) provides flexibility for car audio, desktop speakers, and portable systems. Built-in thermal shutdown at 145\u00b0C and short-circuit protection on all pins ensure robustness in end-user products. The 5-pin Pentawatt package requires minimal external components, typically just input\/output coupling capacitors and feedback network.","working_principle":"The TDA2030A uses a class-AB output stage with a differential input pair and voltage gain stage. The input stage is a PNP differential pair that provides the high 5M\u03a9 input impedance and low 2mV input offset voltage. The voltage gain stage amplifies the differential signal, driving the class-AB output stage through a Vbe multiplier that sets the output stage bias current for minimal crossover distortion. The class-AB output stage uses complementary NPN\/PNP transistors that each conduct slightly more than half the output cycle, eliminating the crossover notch of pure class-B designs. The 80dB open-loop gain provides ample loop gain for the 30dB closed-loop configuration, reducing THD to 0.08%. The closed-loop gain is set by external feedback resistors, with a typical configuration using 22k\u03a9 feedback and 680\u03a9 ground reference for 30dB gain. The 8V\/\u00b5s slew rate ensures full power bandwidth well above the audio range. The thermal shutdown circuit monitors the junction temperature and reduces the bias current when it exceeds 145\u00b0C, gracefully limiting power dissipation without sudden output cutoff.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>Non-Inverting Input<\/td>Analog Input<\/td>Audio signal input (+)<\/td><\/tr>\n
      2<\/td>Inverting Input<\/td>Analog Input<\/td>Feedback input (-), connects to output via resistor<\/td><\/tr>\n
      3<\/td>-VCC<\/td>Power<\/td>Negative supply (or GND for single supply)<\/td><\/tr>\n
      4<\/td>Output<\/td>Analog Output<\/td>Amplified audio output to speaker<\/td><\/tr>\n
      5<\/td>+VCC<\/td>Power<\/td>Positive supply (+6V to +18V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Hi-Fi Amplifiers:<\/strong> 0.08% THD delivers audiophile-quality sound in compact desktop and bookshelf speaker systems<\/li>\n
      • Car Audio:<\/strong> 12V single-supply operation directly powers from vehicle battery; 18W output drives door speakers<\/li>\n
      • Guitar Amplifiers:<\/strong> 3.5A peak output and wide supply range suit practice and performance amplifier combos<\/li>\n
      • Active Subwoof:<\/strong> Bridge-tied load (BTL) configuration with two TDA2030A doubles output power for bass drivers<\/li>\n
      • DIY Audio Projects:<\/strong> 5-pin package and minimal external components make it ideal for hobbyist amplifier builds<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Specs<\/th><\/tr>\n
        TDA2030<\/td>ST<\/td>Original 14W version with lower 18V max supply for less demanding audio applications<\/td>PENTAWATT-5<\/td>14W\/\u00b118V<\/td><\/tr>\n
        TDA2040<\/td>ST<\/td>22W higher-power version with \u00b120V supply for louder speaker driver applications<\/td>PENTAWATT-5<\/td>22W\/\u00b120V<\/td><\/tr>\n
        TDA2050<\/td>ST<\/td>32W highest-power version with \u00b125V supply for high-fidelity speaker amplification<\/td>PENTAWATT-5<\/td>32W\/\u00b125V<\/td><\/tr>\n
        LM1875T<\/td>TI<\/td>25W audio power amplifier with 94dB PSRR and minimal external components in TO-220-5<\/td>TO-220-5<\/td>25W\/\u00b130V<\/td><\/tr>\n
        TPA3116D2DAP<\/td>TI<\/td>Class-D 50W stereo audio amplifier with 92% efficiency for modern wireless speaker designs<\/td>HTSSOP-32<\/td>50W\/Class-D<\/td><\/tr>\n<\/table>\n

        TDA2030A is an 18W mono Class-AB audio power amplifier in PENTAWATT-5 (TO-220-5) package with \u00b118V maximum supply. The TDA2040 (22W) and TDA2050 (32W) scale output power in the same pinout. For modern Class-D efficiency, TPA3116D2 offers 50W stereo at 92% efficiency. The TDA2030A requires only 5 external components and includes thermal shutdown and short-circuit protection.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7853","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=7853"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7853\/revisions"}],"predecessor-version":[{"id":8285,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7853\/revisions\/8285"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7853"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}