component

T491A334K050AT

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by adom

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

componentcapacitorst491a334k050atfactory-2.0.0extractor-text

Verified T491A334K050AT

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: T491A334K050AT · 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 C4978667, digikey 399-T491A334K050ATTR-ND, mouser 80-T491A334K050AT
  • ✓family: CP_EIA-3216-18_Kemet-A
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-dlj5mewi/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✓ t491a334k050at.kicad_sym✓ t491a334k050at.kicad_mod✓ t491a334k050at.step
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Ray Polarity: pin 1 = +, 2 = - (symbol, footprint and 3D agree); brief and README corrected fe33a57

T491A334K050AT

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

T491A334K050AT 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 (K, decoded from MPN) ΔC -10 10 % K = ±10% tolerance, per part-numbering table 2
DC leakage current (maximum, 5 minutes) DCL 0.5 µA at +25°C, maximum/5 minutes, 50 VDC rating 13
Dissipation factor DF 4 % at +25°C, 120 Hz maximum 13
Equivalent series resistance (ESR) ESR 14 Ω at +25°C, 100 kHz maximum 13
Maximum allowable ripple current (rms) I_RMS 73 mA at +25°C, 100 kHz 13
Maximum allowable ripple current (rms) I_RMS 66 mA at +85°C, 100 kHz 13
Maximum allowable ripple current (rms) I_RMS 29 mA at +125°C, 100 kHz 13
Capacitance change over temperature (vs +25°C initial limit) ΔC/C -10 10 % temperature stability at −55°C, reference +25°C initial limit 3
Capacitance change over temperature (vs +25°C initial limit) ΔC/C -20 20 % temperature stability at +125°C, reference +25°C initial limit 3
Dissipation factor over temperature DF 1.5 x IL temperature stability at +85°C, IL = initial limit 3
DC leakage over temperature DCL 10 x IL temperature stability at +85°C, IL = initial limit 3
DC leakage over temperature DCL 12 x IL temperature stability at +125°C, IL = initial limit 3
Operating temperature range T_op -55 125 °C operating temperature range 2
Recommended maximum application voltage V_app 50 % of VR −55°C to 85°C 14
Recommended maximum application voltage V_app 33 % of VR 85°C to 125°C 14
Maximum power dissipation (P max) P_max 75 mWatts case A 3216-18, at 25°C w/+20°C rise 14
Reflow temperature T_reflow 260 °C ≤ 260 °C reflow temp 13
Rated capacitance C 0.33 µF at 120 Hz/25°C, 0.33 µF (code 334) 13
Rated DC voltage VR 50 VDC rated voltage at 85°C 13

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts gold solder systems. Tin/lead (Sn/Pb) terminations are available upon request for any part number. Gold-plated terminations 1

CAD (KiCad official)

  • Symbol: T491A334K050AT
  • Footprint: Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A
  • 3D model: CASE-A-3216-18(mm) (KiCad packages3D, STEP)
  • 3D model files: t491a334k050at-etched.step / t491a334k050at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t491a334k050at.step / t491a334k050at.glb are the bare package body.

Provenance

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

  • Datasheet: KEMET datasheet (23 pp, sha256 c90877715d84e98b, retrieved 2026-10-16, 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