WCAP-ATUL 100 µF 25 V

@@ -0,0 +1,46 @@+# 860040473003++**Würth Elektronik** · Aluminum electrolytic (radial) · Radial THT, 6.3 x 11.0 mm (P=2.5 mm)++100 µF, 25 V polarized aluminum electrolytic capacitor in a radial through-hole 6.3 mm x 11 mm can (2.5 mm lead pitch), from Würth's WCAP-ATUL series. Rated 105 °C with 5000 h load life, 350 mA ripple current at 100 kHz, and 0.25 ohm impedance. The default bulk / reservoir capacitor for power-supply smoothing and local energy storage. Polarized: observe the + and - terminals.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | + | passive | Positive (anode) terminal of the polarized aluminum electrolytic capacitor. Must be biased positive relative to the negative terminal; reverse voltage can damage or destroy the capacitor. Rated working voltage 25 V DC. |+| 2 | - | passive | Negative (cathode) terminal of the polarized aluminum electrolytic capacitor. Identified by the shorter lead wire and by a color band with minus signs on the sleeve. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Aluminum electrolytic (radial, polarized) |+| Capacitance | 100 µF ±20% |+| Rated voltage | 25 VDC |+| Rated temperature | 105 °C |+| Load life | 5000 h @ 105 °C |+| Ripple current | 350 mA @ 100 kHz |+| Impedance / ESR | 0.25 Ω @ 100 kHz |+| Package | Radial THT, 6.3 x 11 mm (2.5 mm pitch) |+| Body (Ø×H) | 6.3 × 11.0 mm |++## Ordering variants++- `860040473003 (radial 6.3x11 mm, bulk)`++## CAD (KiCad official)++- Symbol: `Device:C_Polarized`+- Footprint: `Capacitor_THT:CP_Radial_D6.3mm_P2.50mm`+- 3D model: CP_Radial_D6.3mm_P2.50mm (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Würth Elektronik datasheet](https://www.we-online.com/components/products/datasheet/860040473003.pdf) (7 pp, sha256 `b611e617c41ef496`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/electrolytic-100uf-25v-datasheet.pdf)

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