Surface Mount Switching Diode COMCHIP www.comchip.com.tw BAS21 Voltage: 250 Volts Current: 0.2Amp Feature SOT-23 High Voltage Switching Diode Surface Mount Package Ideally Suited for .119 (3.0) .110 (2.8) .020 (0.5) Automatic Insertion Top View .056 (1.40) .047 (1.20) For General Purpose Switching Applications Mechanical Data Approx. Weight: 0.008 gram .020 (0.5) .044 (1.10) .035 (0.90) .037(0.95) .037(0.95) .006 (0.15) .002 (0.05) Terminals : Solderable per NIL-STD -202, Method 208 .006 (0.15)max. Case: SOT -23, Plastic .103 (2.6) .086 (2.2) .020 (0.5) Dimensions in inches (millimeters) Maximum Ratings Rating Continuous Reverse Voltage Peak Forward Current Peak Surge Forward Current Symbol VR Value 250 Units VDC IF 200.0 mAdc IFSM(surge) 625 mAdc Symbol Max 225.0 1.8 556.0 Units mW mW/C C/W PD 300 2.4 R JA TJ, Tstg 417 -55 to +150 mW mW/C C/W Thermal Characteristics Characteristic Total Device Dissipation FR- 5 Board(1) T A = 25C Derate above 25C Thermal Resistance, Junction to Am bient Total Device Dissipation Alumina Substrate,(2) T A = 25C Derate above 25C Thermal Resistance, Junction to Am bient Junction and Storage Temperature PD R JA C Electrical Characterics (TA = 25C unless otherwise noted) Characteristic Reverse Voltage Leakage Current V R = 200 Vdc VR = 200 Vdc, TJ = 150C Reverse Breakdown Voltage (BR = 100 Adc) Forward Voltage F = 100 mAdc F = 200 mAdc Diode Capacitance (VR = 0, f = 1.0 MHz)) Reverse Recovery Time (I F = IR = 30 mAdc, RL = 100 ) 1.FR-5 = 1.0 X 0.75X 0.062 in. MDS0209006A Symbol IR V(BR) VF CD Trr Min 250 Max 1.0 Units uAdc 100 1000 1250 5 Vdc mV pF 50 nS 2.Alumina = 0.4X 0.3X 0.024 in. 99.5% alumina. Page 1 Surface Mount Switching Diode COMCHIP www.comchip.com.tw RATING AND CHARACTERISTIC CURVES (BAS21) 820 +10 V 2k 0.1 F 100 H tp tr IF 0.1 F IF t trr 10% t DUT 50 utput Pulse Generator 50 Input Sampling Oscilloscope 90% IR(REC) = 1 mA IR VR Output Pulse (IF = IR = 10 mA; measured at IR(REC) = 1 mA) Input Signal Notes: 1. A 2.0 k variable resistor adjusted for a Forward Current (IF) of 10 mA. Notes: 2. Input pulse is adjusted so IR(peak) is equal to 10 mA. Notes: 3. tp trr Figure 1. Recovery Time Equivalent Test Circuit 3500 7000 6000 5000 3000 TA = -55C Reverse Current (nA) Forward Voltage (mV) 2500 2000 1500 TA = 155C 1000 TA = 25C 4000 3000 6 5 4 3 TA = 25C 2 1 0 500 0 0.1 TA = 155C 0.2 0.5 1 2 5 10 20 Forward Current (mA) Figure 2. Forward Voltage MDS0209006A 50 100 200 TA = -55C 1 2 5 10 20 50 100 200 300 Reverse Voltage (V) Figure 3. Reverse Leakage Page 2