# 03EC2256

**KNSCHA** · Aluminum Electrolytic Capacitors - Leaded · CP_Radial_D18.0mm_P7.50mm

03EC2256 from KNSCHA, in a CP_Radial_D18.0mm_P7.50mm. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of a POLARISED capacitor (Capacitors / Aluminum Electrolytic Capacitors - Leaded). Which terminal is the anode (+) is not yet recorded on this page: read it from the maker's datasheet before placing. |
| 2 | 2 | passive | Terminal 2 of a POLARISED capacitor (Capacitors / Aluminum Electrolytic Capacitors - Leaded). Which terminal is the anode (+) is not yet recorded on this page: read it from the maker's datasheet before placing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KNSCHA |
| Package | CP_Radial_D18.0mm_P7.50mm |
| Category | Capacitors |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Capacitance tolerance | C | -20 |  | 20 | % | 120Hz, 0.5Vrms or less, DC bias +1.5~2.0V; printed +20%-20% | 6 |
| Operating temperature range | Top | -25 |  | 105 | °C | 160~450WV range applies to 200WV; page 2 product table prints -40～105 | 3 |
| Surge voltage |  |  |  | 250 | V | For 200 WV rated voltage | 3 |
| Dissipation factor (tan δ) max | tanδ |  |  | 12 | % | 25℃, 120Hz; D.F.(Tan%) Max at 200 WV | 3 |
| Leakage current | IL |  |  | 660 | μA | 2 min after rated voltage applied (LC 2min, product table) | 2 |
| Maximum permissible ripple current | IR |  |  | 2100 | mA | 105℃, 120Hz | 2 |
| Capacitance change after endurance | ΔC | -20 |  | 20 | % | 105±2℃, 2000 +24 h, rated voltage + ripple; relative to initial value | 10 |
| Dissipation factor after endurance | tanδ |  |  | 200 | % | 105±2℃, 2000 +24 h; ≤200% of initial specified value | 10 |
| Capacitance change after shelf life | ΔC | -20 |  | 20 | % | 105±2℃, 1000 +36 h, then 24-48 h at standard conditions; relative to initial value | 10 |
| Dissipation factor after shelf life | tanδ |  |  | 200 | % | 105±2℃, 1000 +36 h; ≤200% of initial specified value | 10 |
| Leakage current after shelf life | IL |  |  | 2 | x specified value | 105±2℃, 1000 h; rated voltage 1 min, measured at 25℃ | 10 |
| Capacitance change after surge test | ΔC | -15 |  | 15 | % | 1000 cycles, charge 30±5 s, discharge approx. 5 min 30 s; relative to initial value | 6 |
| Capacitance change, low/high temperature step 2 | ΔC | -20 |  | 20 | % | Step 2: 9-40(-25)℃ for 2 h, relative to step 1 | 8 |
| Capacitance change, low/high temperature step 4 | ΔC | -20 |  | 20 | % | Step 4: 105℃ for 2 h, relative to step 1 | 8 |
| Leakage current, low/high temperature step 4 | IL |  |  | 500 | % | Step 4: 105℃ for 2 h; less than 500% of specified value | 8 |
| Capacitance change after soldering heat | ΔC | -10 |  | 10 | % | 350±10℃, 3.5±0.5 s | 11 |
| Capacitance change after damp heat | ΔC | -10 |  | 10 | % | 40±2℃, 90-95%RH, 240±8 h | 11 |
| Capacitance change after vibration | ΔC | -5 |  | 5 | % | 10-55-10 Hz, 1.5 mm total amplitude, X/Y/Z 2 h each | 11 |
| Rated voltage | WV |  | 200 |  | V | DC rated working voltage | 2 |
| Nominal capacitance | C |  | 330 |  | μF | 120Hz | 2 |
| Useful life |  |  | 2000 |  | h | 105℃, max ripple current, rated voltage applied | 2 |

## CAD (KiCad official)

- Symbol: `03EC2256`
- Footprint: `Capacitor_THT:CP_Radial_D18.0mm_P7.50mm`
- 3D model: CP_Radial_D18.0mm_P7.50mm (KiCad packages3D, STEP)
- 3D model files: `03ec2256-etched.step` / `03ec2256-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `03ec2256.step` / `03ec2256.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [KNSCHA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756609722609090560) (12 pp, sha256 `5f8067b032b4a69f`, retrieved 2026-11-06, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/03ec2256-datasheet.pdf)