{"product_id":"stk4182ii-sanyo-stereo-amplifier-hybrid-ic-45w-45w","title":"STK4182II Sanyo AF Power Amplifier","description":"\u003ch3\u003eHigh-Performance 45W+45W Stereo Audio Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4182II\u003c\/strong\u003e is a heavy-duty thick-film hybrid integrated circuit from Sanyo's trusted \"Series II\" line. Engineered to deliver a continuous \u003cstrong\u003e45 Watts per channel\u003c\/strong\u003e, this module was the preferred power stage for flagship stereo receivers, integrated Hi-Fi amplifiers, and high-output AV systems throughout the late 80s and 90s.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for split-power supply configurations, the STK4182II features a built-in muting circuit to eliminate power-on \"pop\" noise, protecting your speakers while offering the rugged thermal reliability Sanyo hybrid chips are known for. It provides a balanced analog sound with a Total Harmonic Distortion (THD) of 0.4% at full rated power.\u003c\/p\u003e\n\n\u003ch4\u003eKey Technical Features:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Power Output:\u003c\/strong\u003e 45W + 45W (at 8Ω, 20Hz to 20kHz, THD = 0.4%).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 2-Channel Stereo in a standard 18-Pin SIP (Single In-line Package).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e Optimized substrate designed for a maximum operating temperature of 125°C.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e Full-range high-fidelity from 20Hz to 50kHz (+0, -3dB).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e Recommended supply of ±33.5V (Absolute Maximum ±50V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Compatibility:\u003c\/strong\u003e Member of the STK4102II family (6W to 50W), allowing for modular repair and design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Safety Guide:\u003c\/h4\u003e\n\u003cp\u003eAs a 90W total output module, the STK4182II generates significant thermal energy. It \u003cstrong\u003emust\u003c\/strong\u003e be securely mounted to a high-mass heatsink using premium thermal silicone grease. Operating this module without a heatsink—even for a five-second diagnostic check—will cause immediate and permanent internal substrate failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTechnician's Note: Before installation, verify that the power supply rails are symmetrical and that all filter capacitors are fully discharged. Always check the output emitter resistors (typically 0.22Ω to 0.47Ω) for damage, as external speaker shorts are the most common cause of the original module's failure.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48013256130714,"sku":"SC0008","price":33.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/9-STK4182II_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778557029","url":"https:\/\/prellelectronics.com\/products\/stk4182ii-sanyo-stereo-amplifier-hybrid-ic-45w-45w","provider":"Prell Electronics","version":"1.0","type":"link"}