component

T491A474K025AT

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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.

componentcapacitorst491a474k025atfactory-2.0.0extractor-text

Verified T491A474K025AT

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: T491A474K025AT · 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 C600499, digikey 399-3695-2-ND, mouser 80-T491A474K025
  • ✓family: CP_EIA-3216-18_Kemet-A
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-x_4aibyd/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✓ t491a474k025at.kicad_sym✓ t491a474k025at.kicad_mod✓ t491a474k025at.step
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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T491A474K025AT

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

T491A474K025AT 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
DC leakage current, maximum after 5 minutes DCL 0.5 µA at +20°C, maximum/5 minutes, 25 V rating 11
Dissipation factor, maximum DF 4 % at +20°C, 120 Hz 11
Equivalent series resistance, maximum ESR 13 Ω at +20°C, 100 kHz 11
Maximum allowable ripple current (rms) 76 mA 100 kHz, +25°C 11
Maximum allowable ripple current (rms) 68 mA 100 kHz, +85°C 11
Maximum allowable ripple current (rms) 30 mA 100 kHz, +125°C 11
Capacitance tolerance -10 10 % K suffix (±10%) 2
Capacitance change with temperature -10 10 % Δ C/C at −55°C vs +25°C initial limit (IL) 3
Capacitance change with temperature -20 20 % Δ C/C at +125°C vs +25°C initial limit (IL) 3
Operating temperature range -55 125 °C 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
Maximum power dissipation (P max) 75 mW Case A 3216-18, at 25°C with +20°C rise 14
Rated voltage 25 VDC at 85°C 11
Rated capacitance 0.47 µF 120 Hz/25°C 11

CAD (KiCad official)

  • Symbol: T491A474K025AT
  • Footprint: Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A
  • 3D model: CASE-A-3216-18(mm) (KiCad packages3D, STEP)
  • 3D model files: t491a474k025at-etched.step / t491a474k025at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t491a474k025at.step / t491a474k025at.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 2026-10-14, 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