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T491A685K020AT

KEMET · Tantalum Capacitors · 1206

T491A685K020AT from KEMET, in a 1206. 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 an unpolarised capacitor; either orientation.
2 2 passive Terminal 2 of an unpolarised capacitor; either orientation.

Key specifications

Parameter Value
Manufacturer KEMET
Package 1206
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 suffix) -10 10 % K = ±10%, at 120 Hz/25°C 2
Rated capacitance 6.8 µF Rated capacitance 6.8 µF, measured at 120 Hz/25°C 10
Rated voltage (DC at 85°C) 20 V VDC at 85°C, 20 V rating for this part 10
DC leakage current, maximum after 5 minutes 1.4 µA At +25°C, maximum/5 minutes 10
Dissipation factor (DF) DF 8 % At +25°C, 120 Hz, maximum 10
Equivalent series resistance (ESR) ESR 6 Ω At +25°C, 100 kHz, maximum 10
Maximum allowable ripple current (rms) 112 mA At +25°C, 100 kHz 10
Maximum allowable ripple current (rms) 101 mA At +85°C, 100 kHz 10
Maximum allowable ripple current (rms) 45 mA At +125°C, 100 kHz 10
Capacitance change with temperature (temperature stability) ΔC/C -10 10 % Temperature stability step at −55°C; change vs initial limit (IL) at +25°C 3
Capacitance change with temperature (temperature stability) ΔC/C -20 20 % Temperature stability step at +125°C 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 (Pmax), case A Pmax 75 mW Case A (EIA 3216-18), at 25°C with +20°C rise 14
Reflow temperature 260 °C Reflow temp ≤ 260 °C 10

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: T491A685K020AT
  • Footprint: Capacitor_SMD:C_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: t491a685k020at-etched.step / t491a685k020at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t491a685k020at.step / t491a685k020at.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 2026-10-21, 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