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KYOCERA AVX TAJB685K010K — Specialty Capacitors

TAJB685K010K KYOCERA AVX Molded Tantalum Capacitor, 6.8 µF

MPNTAJB685K010K
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KYOCERA AVX TAJ series, molded tantalum capacitor, 6.8 µF ±10%, 10 V rated, B case code, 3 Ohm ESR, -55°C to 125°C, tape and reel.

KYOCERA AVX TAJB685K010K datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TAJB685K010K specifications
ParameterValue
TypeMolded
SeriesTAJ
MountingSurface Mount
ESR3Ohm
Voltage - rated10 V
Operating temperature-55°C ~ 125°C
Size (Dimension)0.138\" L x 0.110\" W (3.50mm x 2.80mm)
Height - seated0.083\" (2.10mm)
PackageTape & Reel (TR)
FeaturesGeneral Purpose
Tolerance±10%
Capacitance6.8 µF
Case1411 (3528 Metric), 1210
Manufacturer size codeB

Product details

Molded tantalum for wide-temperature decoupling

The TAJB685K010K is a molded tantalum capacitor from the TAJ series, offering 6.8 µF capacitance with ±10% tolerance at 10 V rated voltage. For a 10 V rail, the ripple current rating is approximately 300 mA RMS at 25°C, derating with temperature per the datasheet curve.

The B case code (1411 / 3528 Metric) measures 3.50 mm x 2.80 mm with a seated height of 2.10 mm max. The 0.50 mm pitch between the anode and cathode pads is standard for this case; the recommended land pattern is 1.40 mm pad width with 2.40 mm spacing between pads. Surface-mount assembly on a 2-layer board is straightforward — the B case does not require via-in-pad or thermal vias. The molded body is compatible with reflow profiles per J-STD-020, MSL 3 typical for tantalum chips.

Frequently asked questions

Can a ceramic capacitor replace TAJB685K010K?

A ceramic capacitor of the same capacitance and voltage rating (e.g., X7R or X7S dielectric in a 1206 or 1210 case) can be a functional replacement in many decoupling and filtering roles. However, ceramics have different DC bias characteristics — capacitance drops with applied voltage — and do not offer the same ESR profile. Tantalum capacitors provide stable capacitance across the voltage range and a predictable ESR for ripple current handling. Evaluate the circuit's ESR and voltage coefficient requirements before substituting.

What is the difference between TAJB685K010K and TAJB685K010J?

The suffix 'K' and 'J' denote tolerance: 'K' is ±10%, while 'J' is ±5%. Both are the same capacitance (6.8 µF), voltage (10 V), case size (B), and series (TAJ). Choose 'J' when tighter tolerance is needed for timing or filter circuits; 'K' is sufficient for general-purpose decoupling.