{"id":10610,"date":"2026-07-20T06:39:11","date_gmt":"2026-07-20T06:39:11","guid":{"rendered":"https:\/\/ic-vendor.com\/c2012x7r1h475k125ac\/"},"modified":"2026-07-20T06:39:11","modified_gmt":"2026-07-20T06:39:11","slug":"c2012x7r1h475k125ac","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/c2012x7r1h475k125ac\/","title":{"rendered":"C2012X7R1H475K125AC"},"content":{"rendered":"

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

The C2012X7R1H475K125AC from TDK is a 4.7\u00b5F MLCC capacitor rated at 50V with X7R temperature coefficient in an 0805 package. Featuring \u00b110% tolerance and 125\u00b0C maximum operating temperature, it is designed for general electronic equipment including mobile devices, servers, and power supply circuits.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Capacitance<\/td>\n4.7\u00b5F<\/td>\n<\/tr>\n
Tolerance<\/td>\n\u00b110% (K)<\/td>\n<\/tr>\n
Rated Voltage<\/td>\n50V DC<\/td>\n<\/tr>\n
Temperature Coefficient<\/td>\nX7R (\u00b115% over -55\u00b0C to +125\u00b0C)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n0805 (2012 Metric, 2.0 x 1.25 x 1.25 mm)<\/td>\n<\/tr>\n
Mounting<\/td>\n\u8868\u9762\u8d34\u88c5<\/td>\n<\/tr>\n
Dissipation Factor<\/td>\n5% (maximum at 1 kHz)<\/td>\n<\/tr>\n
Insulation Resistance<\/td>\n10,000 M\u03a9 or 500\u03a9\u00b7F (minimum)<\/td>\n<\/tr>\n
Packing<\/td>\nEmbossed Tape (180mm Reel, 2000 pcs)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 4.7\u00b5F high capacitance in compact 0805 package<\/li>\n
  • 50V voltage rating for 5V\/12V\/24V\/48V applications<\/li>\n
  • X7R temperature coefficient: \u00b115% over -55\u00b0C to +125\u00b0C<\/li>\n
  • \u00b110% tolerance for precise circuit design<\/li>\n
  • Low dissipation factor: 5% maximum<\/li>\n
  • High insulation resistance for low leakage<\/li>\n
  • RoHS compliant and lead-free compatible<\/li>\n
  • Suitable for reflow soldering process<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Mobile device power supply decoupling<\/li>\n
    • Server and PC power management<\/li>\n
    • DC-DC converter output filtering<\/li>\n
    • Tablet and wearable device power circuits<\/li>\n
    • General electronic equipment bypass<\/li>\n
    • Industrial control power filtering<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The C2012X7R1H475K125AC from TDK is a 4.7\u00b5F MLCC capacitor rated at 50V with X7R temperature coefficient in an 0805 package. Featuring \u00b110% tolerance and 125\u00b0C maximum operating temperature, it is designed for general electronic equipment including mobile devices, servers, and power supply circuits. Key Specifications Capacitance 4.7\u00b5F Tolerance \u00b110% (K) Rated Voltage 50V […]<\/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":[13,41],"tags":[1951],"chip_brand":[205],"class_list":["post-10610","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-read-only-memory-rom","tag-c2012x7r1h475k125ac","chip_brand-tdk"],"acf":{"brief_explanation":"4.7\u00b5F MLCC, 50V, X7R, \u00b110%, 0805 package, general purpose, TDK","date_code":"","package_case":"0805 (2.0 x 1.25 x 1.25 mm)","in_stock":11200,"datasheet":"https:\/\/product.tdk.com\/system\/files\/dam\/technicalsupport\/tvcl\/pdf\/mlcc_commercial_general_c2012_ecm.pdf","price":"$0.58 @ 1ku","product_introduction":"The C2012X7R1H475K125AC from TDK is a 4.7\u00b5F multilayer ceramic capacitor (MLCC) from the C series commercial-grade product line. The device features a 50V DC rating with X7R dielectric in an 0805 (2012 metric) package. The X7R temperature characteristic provides \u00b115% capacitance stability over the -55\u00b0C to +125\u00b0C range. The 4.7\u00b5F capacitance value in the compact 0805 footprint is achieved through TDK's advanced thin-layer MLCC technology. The 125AC suffix indicates the 125\u00b0C maximum temperature rating with specific terminal finish. The capacitor is designed for general-purpose applications including mobile devices, servers, PCs, tablets, and power supply circuits. The device offers a dissipation factor of 5% maximum and high insulation resistance for reliable operation.","working_principle":"The C2012X7R1H475K125AC operates as a passive capacitive element:\n\n1. MLCC Construction: Multiple layers of barium titanate-based X7R ceramic dielectric are interleaved with nickel inner electrodes. The 4.7\u00b5F capacitance in 0805 package is achieved through TDK's fine-powder ceramic technology, using hundreds of thin dielectric layers (each ~1\u00b5m) to maximize electrode area. The 50V rating requires sufficient dielectric thickness for reliable operation at rated voltage.\n\n2. X7R Dielectric Properties: The X7R Class II ferroelectric ceramic provides high volumetric efficiency (high capacitance in small package) at the cost of some capacitance variation. The \u00b115% temperature stability is achieved through chemical modification of the barium titanate lattice with dopants that shift the Curie temperature and flatten the capacitance-temperature curve.\n\n3. DC Bias Effect: At 50V DC bias, the effective capacitance may decrease to 30-60% of the nominal 4.7\u00b5F due to ferroelectric domain saturation. This is an inherent characteristic of X7R ceramics and must be considered in DC-coupled applications. The AC capacitance (small signal) remains close to nominal.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Passive<\/td>Capacitor terminal (no polarity)<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Passive<\/td>Capacitor terminal (no polarity)<\/td><\/tr><\/table>","application_scenarios":"
      • Mobile devices: 4.7\u00b5F in 0805 provides bulk decoupling for smartphone application processors and memory rails at 1.2V-3.3V; 50V rating offers margin for 5V USB power paths<\/li>
      • Server power: 4.7\u00b5F at 50V suits VRM (Voltage Regulator Module) output decoupling for server CPUs operating at 1.8V-3.3V with high transient current demands<\/li>
      • DC-DC converters: 4.7\u00b5F provides mid-band output filtering in buck converters; low ESR ensures low output ripple voltage at switching frequencies of 500kHz-2MHz<\/li>
      • Industrial control: -55\u00b0C to +125\u00b0C range and 50V rating for PLC and motor driver power supply filtering in factory automation environments<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TDK<\/td>C2012X7R1H475K125AB<\/td>0805<\/td>Same specs, different reel size<\/td><\/tr>
        Murata<\/td>GRM21BR71H475KA12L<\/td>0805<\/td>4.7\u00b5F, 50V, X7R<\/td><\/tr>
        Taiyo Yuden<\/td>UMK212BJ475KG-T<\/td>0805<\/td>4.7\u00b5F, 50V, X7R<\/td><\/tr>
        Samsung<\/td>CL21A475KQFNNNE<\/td>0805<\/td>4.7\u00b5F, 50V, X7R<\/td><\/tr>
        Yageo<\/td>CC0805KKX7R9BB475<\/td>0805<\/td>4.7\u00b5F, 50V, X7R<\/td><\/tr>
        AVX<\/td>08055C475KAT2A<\/td>0805<\/td>4.7\u00b5F, 50V, X7R<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10610"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10610\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10610"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}