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Silicon Tuning Diode This device is designed in the surface Mount package for general frequency control and tuning applications.It provides solid-state reliability in replacement of mechanical tuning methods. * High Q with Guaranteed Minimum Values at VHF Frequencies * Controlled and Uniform Tuning Ratio * Available in Surface Mount Package MMBV409LT1 MV409 VOLTAGE VARIABLE CAPACITANCE DIODES 3 3 CATHODE 1 ANODE 1 2 CASE 318-08, STYLE 8 SOT- 23 (TO-236AB) MAXIMUM RATINGS(EACH DIODE) Rating Reverse Voltage Forward Current Device Dissipation @T A = 25C Derate above 25C Junction Temperature Storage Temperature Range Symbol VR IF PD TJ T stg M B V 4 0 9 MMBV409LT1 Unit 20 20 Vdc 200 200 mAdc 280 225 mW 2.8 1.8 mW/C +125 C -55 to +150 C DEVICE MARKING MMBV409LT1=X5,MV409=MV409 ELECTRICAL CHARACTERISTICS(TA=25C unless otherwise noted) Characteristic Reverse Breakdown Voltage (IR=10Adc) Reverse Voltage Leakage Current (V R=15Vdc) Diode Capacitance Temperature Coefficient Symbol V (BR)R I Min 20 -- -- Typ -- -- 300 Max -- 0.1 -- Unit Vdc Adc ppm/C R T CC Device Type C T Diode Capacitance V R =3.0Vdc,f=1.0MHz pF Min Nom 29 Q,Figure of Merit C R ,Capacitance Ratio C 3/ C 8 V R =3.0Vdc f=1.0MHz(1) f=50MHz Min 200 Max 32 Min 1.5 Max 1.9 MMBV409LT1,MV409 26 1. CR is the ratio of Ct measured at 3 Vdc divided by Ct measured at 8 vdc I2-1/2 MMBV409LT1 MV409 TYPICAL CHARACTERISTICS 40 1000 C T , DIODE CAPACITANCE (pF) Q , FIGURE OF MERIT 32 24 f = 1.0MHz TA = 25C V R =3Vdc T A = 25C 100 16 8 0 1 2 3 10 20 30 100 10 10 100 1000 V R , REVERSE VOLTAGE (VOLTS) f , FREQUENCY ( MHz ) Figure 1. Diode Capacitance Figure 2. Figure of Merit CT,DIODECAPACITANCE(NORMALIZED) , REVERSE CURRENT ( nA ) 100 60 20 10 6.0 2.0 1.0 0.6 0.2 0.1 0.06 0.02 0.01 0.006 0.002 0.001 -60 -40 -20 0 +20 +40 +60 +80 +100 +120 +140 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 -75 -50 -25 0 +25 +50 +75 +100 +125 V R= 3.0Vdc f = 1.0MHz V R= 15Vdc I R T A , AMBIENT TEMPERATURE (C) T A , AMBIENT TEMPERATURE (C) Figure 3. Leakage Current Figure 4. Diode Capacitance I2-2/2 |
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