2N6027, 2N6028TYPICAL VALLEY CURRENT BEHAVIOR 1000 500 A)m A)m ( R ( G = 10 kW 100 RG = 10 kW CURRENT 100 CURRENT 100 kW ALLEY ALLEY 100 kW I , V V I , V V 1 MW 10 1 MW 10 5 5 10 15 20 −50 −25 0 +25 +50 +75 +100 VS, SUPPLY VOLTAGE (V) TA, AMBIENT TEMPERATURE (°C) Figure 4. Effect of Supply VoltageFigure 5. Effect of Temperature 10 25 C 5.0 T T C = 0.2 mF A = 25°C A = 25°C (SEE FIGURE 3) 20 2.0 AGE (V) T 1.0 TAGE (V) VOL 15 0.5 ARD VOL 0.2 W 10 0.1 1000 pF 0.05 oV , PEAK OUTPUT 5.0 , PEAK FOR 0.02 PV 0.01 0 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 0 5.0 10 15 20 25 30 35 40 IF, PEAK FORWARD CURRENT (AMP) VS, SUPPLY VOLTAGE (V) Figure 6. Forward VoltageFigure 7. Peak Output Voltage + B2 A A E R RT R 2 2 P RBB = R1 + R2 A G G G N R1 h = P R1 + R2 R1 N R1 CC K K K B1 Circuit Symbol Equivalent Circuit Typical Application with External Program" Resistors R1 and R2 Figure 8. Programmable Unijunctionhttp://onsemi.com4