KYOCERA AVX TPS series, Molded tantalum capacitor, 4.7 µF ±20%, 20 V rated, 1.8 Ω ESR, 1206 (3216 Metric) package, -55°C to 125°C operating range.
| Parameter | Value |
|---|---|
| Type | Molded |
| Series | TPS |
| Mounting | Surface Mount |
| ESR | 1.8Ohm |
| Voltage - rated | 20 V |
| Operating temperature | -55°C~125°C |
| Size (Dimension) | 0.126\" L x 0.063\" W (3.20mm x 1.60mm) |
| Height - seated | 0.071\" (1.80mm) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | General Purpose |
| Tolerance | ±20% |
| Capacitance | 4.7 µF |
| Case | 1206 (3216 Metric) |
| Manufacturer size code | A |
The TPSA475M020R1800: This is a 4.7 µF tantalum capacitor rated at 20 V with a 1.8 Ω ESR, in the 1206 (3216 Metric) molded case.
The molded case provides mechanical protection and moisture resistance, but the part is not hermetically sealed — conformal coating is recommended for high-humidity or condensing environments.
KYOCERA AVX lists the TPSA475M020R1800 as Active.
A ceramic capacitor of the same capacitance and voltage rating (e.g., a 4.7 µF, 25 V X7R in 1206) will have a much lower ESR and better high-frequency performance, but ceramics exhibit DC bias derating — the effective capacitance at 20 V may drop by 50% or more. Tantalum capacitors like this one maintain their capacitance across the full voltage range. The replacement decision depends on whether the application can tolerate the capacitance loss under bias and the different failure mode (ceramics fail short, tantalums fail short with potential ignition).