This product complies with the RoHS Directive (EU 2002/95/EC). Transistors 2SD1821 Silicon NPN epitaxial planar type For high breakdown voltage low-frequency and low-noise amplication Package Features High collector-emitter voltage (Base open) V Code CEO Low noise voltage NV SMini3-G1 S-Mini type package, allowing downsizing of the equipment and automatic Pin Name insertion through the tape packing. 1. Base 2. Emitter Absolute Maximum Ratings T = 25C 3. Collector a Parameter Symbol Rating Unit Marking Symbol: P Collector-base voltage (Emitter open) V 150 V CBO Collector-emitter voltage (Base open) V 150 V CEO Emitter-base voltage (Collector open) V 5 V EBO Collector current I 50 mA C Peak collector current I 100 mA CP Collector power dissipation P 150 mW C Junction temperature T 150 C j Storage temperature T 55 to +150 C stg Electrical Characteristics T = 25C3C a Parameter Symbol Conditions Min Typ Max Unit Collector-emitter voltage (Base open) V I = 100 mA, I = 0 150 V CEO C B Emitter-base voltage (Collector open) V I = 10 mA, I = 0 5 V EBO E C Collector-base cutoff current (Emitter open) I V = 100 V, I = 0 1 mA CBO CB E * Forward current transfer ratio h V = 5 V, I = 10 mA 130 330 FE CE C Collector-emitter saturation voltage V I = 30 mA, I = 3 mA 1 V CE(sat) C B Transition frequency f V = 10 V, I = 10 mA, f = 200 MHz 150 MHz T CB E Collector output capacitance C V = 10 V, I = 0, f = 1 MHz 2.3 pF ob CB E (Common base, input open circuited) V = 10 V, I = 1 mA, G = 80 dB, CB C V Noise voltage NV 150 mV R = 100 k, Function = FLAT g Note) 1. Measuring methods are based on JAPANESE INDUSTRIAL STANDARD JIS C 7030 measuring methods for transistors. 2. : Rank classication * Rank R S h 130 to 220 185 to 330 FE Publication date : October 2008 SJC00228DED 1 Maintenance/ Discontinued Maintenance/Discontinued includes following four Product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type Please visit following URL about latest information. This product complies with the RoHS Directive (EU 2002/95/EC). 2SD1821 P T I V I V C a C CE C BE 120 240 120 T = 25C V = 10 V a CE 25C 200 100 100 I = 2.0 mA B 1.8 mA 1.6 mA T = 75C 25C a 1.4 mA 160 80 80 1.2 mA 1.0 mA 0.8 mA 60 120 60 0.6 mA 0.4 mA 80 40 40 0.2 mA 20 20 40 0 0 0 0 0.4 0.8 1.2 1.6 2.0 0 40 80 120 160 0 2 4 6 8 10 12 ( ) ( ) Collector-emitter voltage V (V) Base-emitter voltage V V Ambient temperature T C CE BE a V I h I f I CE(sat) C FE C T E 100 600 200 I / I = 10 V = 10 V C B V = 10 V CB CE T = 25C a 500 160 10 400 120 T = 75C 1 300 a 25C T = 75C 80 a 25C 25C 200 0.1 25C 40 100 0.01 0 0 0.1 1 10 100 0.1 1 10 100 1 10 100 Collector current I (mA) Collector current I (mA) Emitter currentI (mA) C C E C V ob CB 5 I = 0 E f = 1 MHz T = 25C a 4 3 2 1 0 1 10 100 Collector-base voltage V (V) CB 2 SJC00228DED Maintenance/ Discontinued Maintenance/Discontinued includes following four Product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type Please visit following URL about latest information.