The VO421 from Vanlong is a VCXO with Frequency 1.5 to 48 MHz, Frequency Stability ±25 to ±50 ppm, Supply Voltage 3.3 to 5 V, Tuning Voltage 0.3 to 4.5 V, Current 20 to 40 mA (Current Consumption). Tags: Drop-In. More details for VO421 can be seen below.