The UUD1V221MNL1GS from Nichicon is a 220uF 35V low-impedance surface-mount aluminum electrolytic capacitor in an 8x10mm can, AEC-Q200 qualified for automotive applications.<\/p>\n
| \u7c7b\u578b<\/td>\n | Aluminum Electrolytic Capacitor (SMD)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Capacitance<\/td>\n | 220 uF<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Rated Voltage<\/td>\n | 35 VDC<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Tolerance<\/td>\n | +\/-20%<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Impedance (ESR)<\/td>\n | 170 mOhm @ 100kHz, 20C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Ripple Current<\/td>\n | 450 mArms @ 100kHz, 105C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Leakage Current<\/td>\n | 77 uA (max, after 2 min)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Dissipation Factor (tan delta)<\/td>\n | 0.14 @ 120Hz, 20C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Endurance<\/td>\n | 5000 hours @ 105C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| \u5de5\u4f5c\u6e29\u5ea6<\/td>\n | -55 to +105 C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| Dimensions<\/td>\n | 8mm dia x 10mm height<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| \u5305\u88c5<\/td>\n | SMD, Can (Radial)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||
| \u8d44\u683c<\/td>\n | AEC-Q200<\/td>\n<\/tr>\n<\/table>\n\u7279\u70b9<\/h2>\n\u5e94\u7528<\/h2>\nProduct Overview The UUD1V221MNL1GS from Nichicon is a 220uF 35V low-impedance surface-mount aluminum electrolytic capacitor in an 8x10mm can, AEC-Q200 qualified for automotive applications. Key Specifications Type Aluminum Electrolytic Capacitor (SMD) Capacitance 220 uF Rated Voltage 35 VDC Tolerance +\/-20% Impedance (ESR) 170 mOhm @ 100kHz, 20C Ripple Current 450 mArms @ 100kHz, 105C Leakage […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57,13],"tags":[],"chip_brand":[219],"class_list":["post-3814","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-nichicon"],"acf":{"brief_explanation":"220uF 35V low-ESR SMD aluminum electrolytic, AEC-Q200, 8x10mm","date_code":"","package_case":"SMD Can (8.0mm dia x 10.0mm height, 3.1mm lead pitch)","in_stock":11542,"datasheet":"https:\/\/www.nichicon.co.jp\/english\/products\/pdf\/UUD.pdf","price":"$0.35 @ 1ku","product_introduction":"The UUD1V221MNL1GS from Nichicon is a surface-mount aluminum electrolytic capacitor from the UUD (Chip Type, Low Impedance) series, specifically designed for switching power supply output filtering and automotive power supply decoupling applications. The 220uF capacitance and 35V voltage rating make it suitable for the output stage of common DC-DC converters (3.3V, 5V, 12V, 24V) where bulk capacitance is needed to handle load transients and reduce output voltage ripple. The low impedance of 170mOhm at 100kHz is critical for switching power supply applications where the capacitor must absorb high-frequency ripple current without excessive self-heating. The 450mA ripple current rating at 105C ensures reliable operation even in high-ambient-temperature automotive environments. The AEC-Q200 qualification means this capacitor has passed the rigorous automotive reliability tests including temperature cycling, humidity, vibration, and bias life tests, making it approved for use in automotive electronic control units (ECUs). The 5000-hour endurance rating at 105C, combined with the Arrhenius equation (life doubles for every 10C temperature reduction), provides a calculated lifetime of approximately 80,000 hours at 65C, exceeding typical automotive lifetime requirements. The compact 8mm diameter x 10mm height SMD can package provides high CV density (capacitance x voltage per unit volume) compared to MLCC alternatives at the same voltage rating.","working_principle":"The UUD1V221MNL1GS operates as a polarized aluminum electrolytic capacitor. Key characteristics include: (1) Construction - the capacitor consists of an anode foil (pure aluminum with etched surface for high surface area), a cathode foil, and an electrolyte-soaked separator; the dielectric is a thin aluminum oxide (Al2O3) layer formed on the anode foil surface by anodization; the etched surface area provides 50-200x the geometric area, enabling high capacitance in a small volume; (2) Capacitance - the 220uF value is determined by the dielectric thickness (proportional to forming voltage), etched surface area, and electrolyte composition; the +\/-20% tolerance accounts for manufacturing variations in etching and forming; (3) ESR (Equivalent Series Resistance) - the 170mOhm ESR at 100kHz is the sum of the electrolyte resistance, foil resistance, and connection resistance; the low impedance UUD series uses a low-resistivity electrolyte and multiple tab connections to minimize ESR; ESR is the primary factor determining ripple current capability and self-heating; (4) Ripple Current - the 450mA rating is the maximum RMS ripple current the capacitor can withstand at 105C without exceeding the rated temperature; the ripple current causes power dissipation (P = I^2 x ESR) that heats the capacitor; exceeding the ripple current rating accelerates electrolyte evaporation and reduces lifetime; (5) Lifetime - the 5000-hour rating at 105C follows the Arrhenius law: lifetime at temperature T = 5000 x 2^((105-T)\/10); at 65C, the calculated lifetime is 5000 x 2^4 = 80,000 hours.","pin_description":"
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