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Engineers designing RF amplifiers, oscillators, or precision instrumentation circuits face one recurring challenge — maintaining capacitance stability under temperature, bias, and humidity stress. The Suntan TS23 Series addresses this with a silver-mica dielectric that delivers low loss (DF ≤ 0.001), high insulation resistance, and tight tolerance down to ±0.5 pF. Across its variants (TS23 / TS23A / TS23B / TS23C), the series provides long-term reliability for both high-frequency and high-voltage applications.[2][3]
Comprehensive Lineup for RF and High-Voltage Designs
The TS23 family extends from standard through-hole capacitors to metal-clad and SMD versions, covering a capacitance span from 1 pF to 100,000 pF and voltages up to 500 VDC. Each series is built with high-purity mica and silver electrodes, enabling predictable behavior in RF tuning and filtering systems and stable operation under voltage and temperature stress.
| Model | Rated Voltage (VDC) | Capacitance Range (pF) | Key Features | Operating Temp |
|---|---|---|---|---|
| TS23 | 50 / 100 / 300 / 500 | 1 pF – 100,000 pF | High reliability; moisture resistance; tolerance options from ±0.5 pF to ±20% | –55 °C ~ +150 °C |
| TS23A | 300 | 1 pF – 120 pF | Metal-clad body; insulation ≥ 1,000 MΩ; DF ≤ 0.002 (1 MHz, 5–30 pF) | –55 °C ~ +200 °C |
| TS23B | 500 | 5 pF – 1,000 pF | High Q; 200% rated-voltage withstand (1–5 s); ±1% tolerance options | –55 °C ~ +200 °C |
| TS23C (SMD) | 500 | 10 pF – 1,000 pF | 1210–2220 packages; DF ≤ 0.001 @ 1 MHz; insulation ≥ 100,000 MΩ | –55 °C ~ +200 °C |
Performance Advantages
Dielectric stability. The silver-mica dielectric exhibits extremely low dielectric absorption and near-zero capacitance drift under bias, temperature, and humidity variations — a key reason it remains a reference material for precision RF networks and tuned circuits. Controlled studies on mica sheets and paper report stable permittivity and low power factor across wide thermal ranges.[2][3]
Low dissipation factor / high Q. With DF ≤ 0.001 at 1 MHz (series-dependent), TS23 parts support narrowband filters, oscillators, and impedance matching where low loss translates to cleaner skirts and improved phase behavior.[2]
Insulation resistance. SMD variants reach ≥ 100,000 MΩ while through-hole parts specify ≥ 1,000 MΩ, minimizing leakage and preserving phase accuracy under high-voltage stress and temperature cycling; mica’s crystalline structure contributes to this outcome.[1][3]
Voltage endurance. The series supports 200% rated-voltage withstand testing (1–5 s, ≤ 5 mA surge), evidencing robust dielectric margins and manufacturing consistency suitable for surge-screening regimes.[1]
High-temperature operation. Metal-clad and SMD members of the family operate up to +200 °C, aligning with mica’s documented thermal endurance and low loss characteristics reported in classical and contemporary literature.[2][4][5]
Applications and Design Focus
Typical use cases include RF/IF filters, LC/VCO oscillators, impedance matching networks, precision amplifiers, and high-voltage control modules. Designers in communications, aerospace, and industrial instrumentation prefer silver-mica where long-term stability, low loss, and consistent tolerance are essential to hold frequency and phase across environmental cycling.[2][3]
▶ Watch: How TS23 Series maintains capacitance precision across temperature and voltage stress.
Next Step
Suntan TS23 Series — silver mica capacitors up to 500 V and 200 °C, offering low loss, high Q, and long-term precision for RF and industrial electronics.
References
- ESCIES. Some Mechanisms of Failure of Capacitors with Mica Dielectrics, 2017. Available at: escies.org
- NIST (National Bureau of Standards). Some Electrical Properties of Foreign and Domestic Micas and the Effect of Elevated Temperatures on Micas, J. Res. NBS, Vol. 7, No. 2, 1951. PDF: nvlpubs.nist.gov
- Springer. Dielectric Properties of Mica Paper in Variable Temperature and Humidity, 1987. Link: springer.com
- MDPI (Molecules). High-Density Capacitive Energy Storage in Low-Dielectric-Constant Polymer/Mica Nanocomposites, 2024. Link: mdpi.com
- Elsevier (ScienceDirect). Dielectric Reliability and Temperature Coefficients in RF Passive Components, Microelectronics Reliability, 2022. Link: sciencedirect.com