| 参数 | 
               数值 | 
            
                          
                 | Ct Total Capacitance 3 Vr=12 V (pF) Typ. | 
                 — | 
              
                          
                 | Rs Series Resistance Max 2 (Ω) | 
                 2.6 | 
              
                          
                 | Ct Total Capacitance 3 Vr=20 V (pF) Typ. | 
                 — | 
              
                          
                 | Ct Total Capacitance 3 Vr=1 V (pF) Typ. | 
                 4.4 | 
              
                          
                 | Capacitance Ratio Range (V) | 
                 0.3 to 4.7 | 
              
                          
                 | Ct Total Capacitance 3 Vr=8 V (pF) Typ. | 
                 0.64 | 
              
                          
                 | Total Capacitance Ratio Min. 1 | 
                 9.5 | 
              
                          
                 | Ct Total Capacitance 3 Vr=4 V (pF) Typ. | 
                 0.77 | 
              
                          
                 | Package Type | 
                 0402 | 
              
                          
                 | Vr Reverse Breakdown Voltage Ir = 10 µA (V) Min. | 
                 15 | 
              
                          
                 | 系列 | 
                 - | 
              
                          
                 | 类别 | 
                 Discrete Semiconductor Products | 
              
                          
                 | 电容@ Vr,F | 
                 0.78pF @ 4.7V, 50MHz | 
              
                          
                 | 电容比 | 
                 10 | 
              
                          
                 | 电容比条件 | 
                 C0.3/C4.7 | 
              
                          
                 | 电压-峰值反向(最大) | 
                 15V | 
              
                          
                 | 二极管型 | 
                 Surface Mount | 
              
                          
                 | 在 Vr、F时的Q值 | 
                 1500 @ 3V, 50MHz | 
              
                          
                 | 安装类型 | 
                 Single | 
              
                          
                 | 供应商设备封装 | 
                 0402 | 
              
              
           
        
         
       
                         
           
              
                       The SMV1247-040LF and SMV1249-040LF are silicon, surface mount hyperabrupt tuning varactor diodes designed for use as tuning elements in RF Voltage-Controlled Oscillators (VCOs), and voltage-tuned phase shifters and filters. The typical capacitance ratio from 0.3 V to 4.7 V is 10 for the SMV1247-040LF and 12 for the SMV1249-040LF, which makes these two varactors suitable for octive bandwidth VCOs, wide voltage range phase shifters, and wideband voltage-controlled filters. The SMV1247-040LF and SMV1249-040LF varactor diodes are provided in a surface mount package compatible with the industry-standard 0402 printed circuit board footprint.