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T491A225M020AT

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KEMET Tantalum Capacitors, CASE-A-3216-18(mm). Polarised capacitor: pin 1 is + by the KiCad polarised-footprint convention, KiCad symbol/footprint/3D.

componentcapacitorst491a225m020atfactory-2.0.0extractor-text

Verified T491A225M020AT

by Ray · last 12 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

12 Nov 2026RaySupersedes the earlier record: that check missed polarity (the pins said "unpolarised"; this capacitor is polarised): component-page-verify now PASSESfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: T491A225M020AT · CASE-A-3216-18(mm) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: two-terminal part whose datasheet prints no pin numbers: pins 1 and 2 by library convention, no names to check
  • ✓distributor: lcsc C600495, digikey 399-9712-2-ND, mouser 80-T491A225M020
  • ✓family: CP_EIA-3216-18_Kemet-A
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-wtnyyav1/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 18 kB, viewers/symbol.html 6 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ t491a225m020at.kicad_sym✓ t491a225m020at.kicad_mod✓ t491a225m020at.step
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

T491A225M020AT

KEMET · Tantalum Capacitors · CASE-A-3216-18(mm)

T491A225M020AT from KEMET, in a CASE-A-3216-18(mm). 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 + passive Positive terminal (pad 1 of the CP_ footprint; symbol and 3D mark the + end).
2 - passive Negative terminal.

Key specifications

Parameter Value
Manufacturer KEMET
Package CASE-A-3216-18(mm)
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 (M = ±20%) -20 20 % Part number suffix M = ±20% 2
Rated voltage 20 VDC Rated voltage at 85°C (020 = 20 VDC) 10
DC leakage 0.5 µA at +20°C, maximum at 5 minutes, rated voltage 10
Dissipation factor (DF) DF 6 % at +20°C, 120 Hz, maximum 10
ESR ESR 6 Ω at +20°C, 100 kHz, maximum 10
Maximum allowable ripple current (rms) 104 mA at +25°C, 100 kHz, maximum 10
Maximum allowable ripple current (rms) 94 mA at +85°C, 100 kHz, maximum 10
Maximum allowable ripple current (rms) 42 mA at +125°C, 100 kHz, maximum 10
Maximum power dissipation (Pmax), case A Pmax 75 mW at 25°C with +20°C rise, case A 3216-18 14
Operating temperature range -55 125 °C Operating temperature range 2
Recommended maximum application voltage 50 % of VR −55°C to 85°C 14
Recommended maximum application voltage 33 % of VR 85°C to 125°C 14
Capacitance change at −55°C ΔC/C -10 10 % Relative to +25°C initial limit (IL), −55°C 3
Capacitance change at +85°C ΔC/C -10 10 % Relative to +25°C initial limit (IL), +85°C 3
Capacitance change at +125°C ΔC/C -20 20 % Relative to +25°C initial limit (IL), +125°C 3
Dissipation factor at +85°C DF 1.5 x IL Multiple of initial limit at +85°C (temperature stability) 3
Dissipation factor at +125°C DF 1.5 x IL Multiple of initial limit at +125°C (temperature stability) 3
DC leakage at +85°C DCL 10 x IL Multiple of initial limit at +85°C (temperature stability) 3
DC leakage at +125°C DCL 12 x IL Multiple of initial limit at +125°C (temperature stability) 3
Endurance capacitance change ΔC/C -10 10 % 85°C at rated voltage 2,000 h, or 125°C at 2/3 rated voltage 2,000 h 3
Storage life capacitance change ΔC/C -10 10 % 125°C at 0 V, 2,000 h 3
Thermal shock capacitance change ΔC/C -5 5 % MIL-STD-202 Method 107 Cond. B, −55°C to 125°C, 1,000 cycles 3
Surge capacitance change ΔC/C -5 5 % 85°C, 1.32 × rated voltage, 1,000 cycles (125°C, 1.2 ×) 3
Rated capacitance C 2.2 µF Part number 225 = 2.2 µF, measured at 120 Hz/25°C 10

CAD (KiCad official)

  • Symbol: T491A225M020AT
  • Footprint: Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A
  • 3D model: CASE-A-3216-18(mm) (KiCad packages3D, STEP)
  • 3D model files: t491a225m020at-etched.step / t491a225m020at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t491a225m020at.step / t491a225m020at.glb are the bare package body.

Provenance

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

  • Datasheet: KEMET datasheet (23 pp, sha256 271b6cea80c8b55f, retrieved 2026-10-13, tier: lcsc)
  • 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