Diodes SMD Type General Purpose Controlled Avalanche Diodes KAS29/KAS31/KAS35 (BAS29/BAS31/BAS35) SOT-23 Unit: mm +0.1 2.9-0.1 +0.1 0.4-0.1 Features 1 0.55 General application +0.1 1.3-0.1 +0.1 2.4-0.1 Small plastic SMD package 0.4 3 2 +0.1 0.95-0.1 +0.1 1.9-0.1 0-0.1 1.Base 2.Emitter 3.collector KAS35 KAS31 KAS29 +0.1 0.38-0.1 +0.1 0.97-0.1 +0.05 0.1-0.01 Absolute Maximum Ratings Ta = 25 Parameter Repetitive peak reverse voltage Continuous reverse voltage Continuous forward current* 1 single diode loaded; Symbol Rating Unit VRRM 110 V VR 90 V IF double diode loaded; 250 mA 150 600 mA 10 A 4 0.75 A A Ptot 250 mW Repetitive peak reverse current IRRM 600 mA Repetitive peak reverse energy *2 ERRM 5 mJ Thermal resistance from junction to tie-point Rth j-tp 360 K/W Thermal resistance from junction to ambient * 1 K/W Repetitive peak forward current IFRM Non-repetitive peak forward current square wave; Tj = 25 prior to surge; t=1 s t = 100 t=1s Total power dissipation Ta = 25 *1 IFSM s Rth j-a 500 Junction temperature Tj 150 Storage temperature Tstg -65 to +150 *1 Device mounted on an FR4 printed-circuit board. *2 tp 50 s; f 20 Hz; Tj = 25 www.kexin.com.cn 1 Diodes SMD Type KAS29/KAS31/KAS35 (BAS29/BAS31/BAS35) Electrical Characteristics Ta = 25 Parameter Symbol Testconditons VF Forward voltage Reverse current IR Reverse avalanche breakdown voltage V(BR)R Diode capacitance Reverse recovery time Max Unit IF = 10 mA 750 mV IF = 50 mA 840 mV IF = 100 mA 900 mV IF = 200 mA 1 V IF = 400 mA 1.25 V VR = 90 V 100 nA VR = 90 V; Tj = 150 100 A IR = 1 mA 170 V f = 1 MHz; VR = 0 35 pF trr when switched from IF = 30 mA to IR = 30 mA; RL = 100 Ù; measured at IR = 3 mA 50 ns NO. KAS29 KAS31 KAS35 Marking L20 L21 L22 www.kexin.com.cn 120 Typ Cd Marking 2 Min Diodes SMD Type KAS29/KAS31/KAS35 (BAS29/BAS31/BAS35) Typlcal Characteristics (1) Tj = 150 ; typical values. Device mounted on an FR4 printed-circuit board. (1) Single diode loaded. (2) Tj = 25 ; typical values. (2) Double diode loaded. (3) Tj = 25 ; maximum values. Fig.1 Maximum Permissible Continuous Forward Current as a Function Of Ambient Temperature. Fig.2 Forward Current as a Function of Forward Voltage. Based on square wave currents. Tj = 25 °C prior to surge. Fig.3 Maximum permissible non-repetitive peak forward current as a function of pulse duration. www.kexin.com.cn 3 Diodes SMD Type KAS29/KAS31/KAS35 (BAS29/BAS31/BAS35) f = 1 MHz; Tj = 25 °C. (1) VR = 90 V; maximum values. (2) VR = 90 V; typical values. Fig.4 Reverse Current as a Function of Junction Temperature. 4 www.kexin.com.cn Fig.5 Diode Capacitance as a Function Of Reverse Voltage; Typical Values.