This document is a quick reference guide to Sharma Mica Capacitors. It introduces the product's series features, product models, capacitance range, maximum voltage, dimensions, etc.
The document provides a quick reference for Sharma's DM series mica capacitors, listing series features, lead spacing, packaging options and part‑numbering conventions. It includes general specifications such as capacitance range, voltage ratings, temperature limits and mechanical dimensions for each case size.
Performance characteristics are described, covering capacitance measurement methods, dissipation factor, insulation resistance, withstanding voltage, vibration, moisture and soldering heat resistance tests, as well as life‑test procedures. The data is intended for engineers selecting capacitors for precision tuning, timing, filtering and coupling applications.
| Capacitance range | 1 pF to 82 000 pF |
|---|---|
| Voltage rating | 50 V DC to 500 V DC |
| Insulation resistance (≤10 000 pF) | ≥100 000 MΩ at 25 °C |
| Dissipation factor (100‑1 000 pF) | <0.1 % at 1 MHz |
| Lead spacing DM05 | 3.05 ± 0.8 mm |
| Operating temperature range | -40 °C to +150 °C |
Capacitors are subjected to 40 °C at 90‑95 % relative humidity for 240 ± 8 hours.
Capacitors can withstand 200 % of the rated voltage for 1 to 5 seconds with a limiting surge current of 50 mA.
Capacitors are tested at 125 °C with 150 % of the rated DC voltage for 2000 hours.