BA277 RF Band Switching Diode BAND SWITCHING DIODE 100m AMPERES 35 VOLTS P b Lead(Pb)-Free Features: * Low Diode Capacitance : 1.2 pF(Max) * Low Diode Forward Resistance : 0.9Ω(Max) * Small Surface Mounting Type. * High Reliability. 1 2 Applications: SOD-523 * Surface Mount Band-Switching Circuits. * Low Loss Band Switching in VHF Television Tuners. SOD-523 Outline Dimensions SOD-523 Dim A B C D E J K Min 1.10 0.70 0.50 0.25 0.15 0.07 1.50 Max 1.30 0.90 0.70 0.35 0.25 0.20 1.70 P IN 1. CATHODE 2. ANODE WEITRON http://www.weitron.com.tw 1/3 08-Dec-05 BA277 Maximum Ratings (Ta=25˚C Unless otherwise noted) Symbol Value Unit DC Reverse Voltage VR 35 V DC Forward Current IF 100 mA Operating junction Temperature Range TJ 125 ˚C Tstg -55 to +125 ˚C Characteristic Storage Temperature Range Electrical Characteristics (TA=25 ˚C Unless otherwise noted) Symbol Min Typ Max Unit Forward Voltage IF=10mA VF - - 1.0 V Reverse current VR=25V IR - - 10 nA Capacitance between terminals VR=6V, f=1MHz CT - - 1.2 pF Forward operating resistance IF=2mA, f=100MHz Rf - - 0.9 Ω Characteristic Device Marking Item Marking BA277 1 WEITRON http://www.weitron.com.tw Eqivalent Circuit diagram 1 2/3 2 08-Dec-05 BA277 Electrical characteristic curves (TA=25°C) 1 10.0 REVERSE CURRENT : IR (nA) FORWARD CURRENT : IF(mA) 100m 10m 1m 100 10 1 100n 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.0 0.1 0 1.1 FORWARD VOLTAGE : VF (V) CAPACITANCE BETWEEN TERMINALS : CT (pF) FORWARD OPERATING RESISTANCE : R f (Ω) 0.5 0.2 2 5 10 50 3 2 1 0 0 10 20 30 Fig. 3 Capacitance between terminals characteristics Fig. 4 Forward operating resistance characteristics http://www.weitron.com.tw 40 REVERSE VOLTAGE : V R (V) FORWARD CURRENT : IF (mA) WEITRON 30 Fig. 2 Reverse characteristics f=100MHz 0 1 20 REVERSE VOLTAGE : V R (V) Fig. 1 Forward characteristics 1.0 10 3/3 08-Dec-05