A Dimensions: mm B Recommended land pattern: mm D Electrical Properties: Properties Test conditions Value Unit Tol. Inductance 0.796 MHz L 820 H 10% Rated current T = 20 K I 30 mA max. R DC Resistance 20C R 45 max. DC Self resonant frequency f 2 MHz typ. res Q-factor 0.796 MHz Q 25 min. C Schematic: E General information: It is recommended that the temperature of the part does not exceed 105C under worst case operating conditions. Ambient temperature: -40C to +85C (refering to I ) R Operating temperature: -40C to +105C Storage temperature (on tape & reel): -20C to +40C 75% RH max. Test conditions of Electrical Properties: 20C, 33% RH if not specified differently DESCRIPTION 4.8 2014-11-04 SSt JRS Reference on drawing Description 4.7 2014-09-10 SSt JRS Marking 821 (Inductance Code) WE-GF SMD Wire Wound Inductor 4.6 2014-06-11 SSt SSt Wrth Elektronik eiSos GmbH & Co. KG EMC & Inductive Solutions 4.5 2014-01-08 SSt SSt Max-Eyth-Str. 1 4.4 2013-04-25 SSt SSt 74638 Waldenburg Order.- No. SIZE Germany 4.3 2013-02-04 SSt MST Tel. +49 (0) 79 42 945 - 0 www.we-online.com 74476628 A4 4.2 2012-12-05 SSt SSt eiSos we-online.com 4.1 2012-11-13 SSt MST Size: 1812 This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Wrth Elektronik eiSos GmbH & Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Wrth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.G Packaging Specification - Tape and Reel mm : DESCRIPTION 4.8 2014-11-04 SSt JRS 4.7 2014-09-10 SSt JRS WE-GF SMD Wire Wound Inductor 4.6 2014-06-11 SSt SSt Wrth Elektronik eiSos GmbH & Co. KG EMC & Inductive Solutions 4.5 2014-01-08 SSt SSt Max-Eyth-Str. 1 4.4 2013-04-25 SSt SSt 74638 Waldenburg Order.- No. SIZE Germany 4.3 2013-02-04 SSt MST Tel. +49 (0) 79 42 945 - 0 www.we-online.com 74476628 A4 4.2 2012-12-05 SSt SSt eiSos we-online.com 4.1 2012-11-13 SSt MST Size: 1812 This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Wrth Elektronik eiSos GmbH & Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Wrth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.