This document describes the features of the KSD-2073-000 1 SDP530WMF attenuator diode, such as low capacitance and low series resistance, and its application in VHF/UHF band tuners.
The SDP530WMF is an AGC and attenuator diode designed for VHF/UHF band tuners. It features a very low capacitance (max 0.5 pF) and low series resistance (typical 3 Ω at 10 mA), making it suitable for high‑frequency applications.
The document lists absolute maximum ratings such as 50 V reverse voltage and 50 mA forward current, as well as detailed electrical characteristics including forward voltage, reverse current, total capacitance, and series resistance across various test conditions.
| Maximum capacitance | 0.5 pF |
|---|---|
| Typical series resistance (10 mA) | 3 Ω |
| Continuous reverse voltage (Ve) | 50 V |
| Forward current (Ie) | 50 mA |
| Junction temperature (Tj) | 150 °C |
| Storage temperature range (Tstg) | -55 ~ 150 °C |
| Reverse current (Ip) at Vr=50 V | 0.1 µA |
| Forward voltage (Vf) at If=10 mA | 0.95 V |
| Total capacitance (Cr) at Vp=50 V, f=1 MHz | 0.5 pF |
| Series resistance at Is=1 mA, f=100 MHz | 17 Ω |
| Series resistance at I=10 mA, f=1 GHz | 3 Ω |
The device can withstand a continuous reverse voltage of 50 V.
The typical series resistance is 3 Ω at a forward current of 10 mA.
It can be stored from –55 °C up to 150 °C.
The diode has a maximum capacitance of 0.5 pF.