K511-K681 are low level zener diodes produced by Dinghao Electronics. They have a unique manufacturing process and remarkably sharp breaking diodes, with very low impedances at low current levels, and the lowest values of impedance ever achieved at the 250uA level.
The 3022/3033 series of diodes are super-abrupt tuning diodes for VCXOs. They have extremely high capacitance swings, linear characteristics, uniform capacitance/temperature coefficient and highly reproducible ion implanted structure.
KSV1401-KSV1412 are silicon hyperabrupt tuning diodes with high capacitance ratios and linear tuning characteristics, satisfying a wide range of broadband applications.
1N5441 to 1N5476 are general purpose abrupt varactor diodes with capacitance ranging from 6.8 to 100 pF, tuning ratio from 2.5 to 3.3, and minimum quality factor from 450 to 175.
MV1620-MV1650 is a varactor diode from MACOM, USA. It has a wide capacitance range, high quality factor, high tuning ratio, rated reverse breakdown voltage of 20Vdc and maximum operating temperature of 150°C
