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KYOCERA AVX TAJY337K004RNJ — Specialty Capacitors

TAJY337K004RNJ – KYOCERA AVX 330µF 4V Molded Tantalum

MPNTAJY337K004RNJ
Active

KYOCERA AVX TAJ series, molded tantalum capacitor, 330 µF ±10%, 4 V rated, 300 mOhm ESR, 2917 (7343 Metric) surface-mount package, -55°C to 125°C operating range.

$0.7441Ref. price · indicative, final on quote
KYOCERA AVX TAJY337K004RNJ datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TAJY337K004RNJ specifications
ParameterValue
TypeMolded
SeriesTAJ
MountingSurface Mount
ESR300mOhm
Voltage - rated4 V
Operating temperature-55°C~125°C
Size (Dimension)0.287\" L x 0.169\" W (7.30mm x 4.30mm)
Height - seated0.079\" (2.00mm)
PackageTape & Reel (TR)
FeaturesGeneral Purpose
Tolerance±10%
Capacitance330 µF
Case2917 (7343 Metric)
Manufacturer size codeY

Product details

330 µF tantalum for power-rail decoupling

The TAJY337K004RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, offering 330 µF capacitance at 4 V rated voltage in a 2917 (7343 Metric) surface-mount package. With 300 mOhm ESR, this part handles moderate ripple currents typical of input/output filtering on 3.3 V or 1.8 V rails, but the 4 V rating means you must derate to 2 V or less for reliable operation — tantalum capacitors are sensitive to voltage surges above 50% of rated voltage.

Frequently asked questions

Where can I buy TAJY337K004RNJ?

This part is active and available through independent distribution.

Can TAJY337K004RNJ replace a 330µF 6.3V tantalum capacitor?

Only if the circuit voltage stays at or below 2 V after derating. The 4 V rating of this part is lower than 6.3 V, so the derated operating voltage (50% of 4 V = 2 V) is significantly less than what a 6.3 V part would allow (50% of 6.3 V ≈ 3.15 V). Check the rail voltage before substituting.

What is the ESR of TAJY337K004RNJ?

The equivalent series resistance is 300 mOhm, measured at 100 kHz per the TAJ series datasheet. This ESR value determines the ripple current rating and self-heating under AC load.