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UL3 Series - Unlytic®

The UL31 / UL32 / UL34 / UL35 UNLYTIC® UL3 SERIES represent the "best" choice for high power DC filter applications because of the combination of physical and electrical properties it offers.

Key Features

  • Inductance as low as 25nH (<12nH available)
  • Low ESR
  • Current carrying capability to 110 amps
  • Withstands hostile environments
  • Integrated mounting flanges
  • RoHS compliant

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Low Inductance with High Current Carrying Capability

The UL3 Series encompasses low inductance with high current carrying capability – and a low profile to make the most efficient use of system space and increased cooling efficiency. Plus an in-house developed, “specific to the task” thermoplastic formulation for the enclosure, improves thermal conductivity.

There is also an integrated flange with pre-drilled holes to simplify mounting.

The UNLYTIC® UL3 SERIES, with its introduction, the designer has a film capacitor for high power filter systems that will maximize space utilization, performance and reliability. With the added potential for measurable production cost savings.

 

Additional Information

Capacitance Range

  • 6.5µF to 300.0µF

Capacitance Tolerance

  • Standard tolerance is ±10%.
  • Tolerances of ±20% and ±5% are also available.

Operating Temperature Range

  • -55°C to +105°C

Enclosure/ Construction

  • Unlytic polypropylene potted in a thermoplastic housing.
  • Terminals are tin plated brass.

Voltage Rating

  • 500VDC to 2200VDC

Quality Control

  • Capacitors are tested 100% for:
    • Capacitance
    • Tolerance
    • Dissipation Factor
    • Dielectric withstanding voltage
    • Insulation Resistance
    • Equivalent Series Resistance (ESR)

*Process and inspection data are maintained on file and available on special request.

Environmental

ParameterMethodCondition
Vibration204D
Shock213I
Humidity106
Thermal Shock107A
Life108F
Reference MIL-STD 202
UL31, 32, 34 AND UL35
ELECTRICAL SPECIFICATIONS
ESL FORESL FORCURRENT RATING (AMPS RMS)
UL31 AND UL32UL34 AND UL35IN CIRCUIT10 kHz TO 100 kHz CONTINUOUS
PART NUMBERVOLTAGEVALUECASE "H""L"Fres"L"FresI pkdv/dtE.S.R.AMBIENT TEMPERATURE
VDCuFmmnHkHznHkHzmOHMS25*C45*C65*C85*C105*C
UL3_Q157K500150402582.212118.65769380.47110.395.778.556.313.4
UL3_Q207K500200513262.91591.95809290.57105.491.575.153.912.8
UL3_Q277K500275645042.92560.75672210.7797.284.469.349.711.8
UL3_Q307K500300795539.22755.95022171.7077.166.954.939.49.4
UL3_K107K6001004025100.712145.34396440.6291.279.265.046.611.1
UL3_K157K600150513272.615106.14979330.6796.884.068.949.911.8
UL3_K207K600200645050.32571.24714240.9387.075.762.044.510.6
UL3_K257K600250795542.92761.34782191.7977.467.255.139.69.4
UL3_N706K800704025120.312173.73846550.7188.076.462.745.010.7
UL3_N107K800100513289.015129.94149410.8089.577.763.845.710.9
UL3_N137K800130645062.42588.33830291.1578.868.456.140.39.6
UL3_N167K800160795553.72776.63826242.2069.260.149.335.48.4
UL3_BL356K1000354025170.112245.62692771.0272.663.051.737.18.8
UL3_BL506K1000505132125.815183.82905581.1674.164.352.837.89.0
UL3_BL706K100070645085.125120.32887411.5369.660.449.635.68.5
UL3_BL806K100080795575.927108.32678333.2057.549.940.929.47.0
UL3_L256K1200254025201.312290.62198881.2663.755.345.432.57.8
UL3_L356K1200355132150.415219.72324661.4564.055.545.632.77.8
UL3_L506K1200506450100.725142.42357471.8761.353.243.731.37.5
UL3_L606K120060795587.627125.02296383.7452.845.937.627.06.4
UL3_M186K1500184025237.312342.419781101.4262.854.544.732.17.6
UL3_M256K1500255132177.915259.92075831.6462.754.444.732.07.6
UL3_M356K1500356450120.325170.12062592.1559.151.342.130.27.2
UL3_M406K1500407955107.327153.11913484.4948.942.434.825.05.9
UL3_BX106K1800104025318.312459.415961601.6757.349.740.829.37.0
UL3_BX156K1800155132229.715335.517191151.9158.050.341.329.67.1
UL3_BX206K1800206450159.225225.11559782.7950.143.535.725.66.1
UL3_BX276K1800277955130.627186.41549575.5643.537.831.022.25.3
UL3_S655K22006.54025394.812569.912971992.0651.945.137.026.56.3
UL3_S905K22009.05132296.615433.212891432.5649.042.534.925.06.0
UL3_S126K2200126450205.525290.61170973.7242.536.930.221.75.2
UL3_S176K2200177955164.627234.91220727.0838.433.327.319.64.7

UL32_34

UL31_35

UL3-IR2

Dielectric Strength

Capacitors withstand a DC potential of 1.3 x rated voltage for one (1) minute without damage or breakdown. Test voltage is applied and discharged through a minimum resistance of 100 OHM per volt minimum.

UL3-CC2

Dissipation Factor

Polypropylene has an intrinsic dissipation factor of less than 2.1 x 10-4 over the operating temperature range of -55°C to +105°C and frequencies to 1MHz.

UL3-DF2

  • UL31/UL35 – Male Terminal
  • UL32/UL34 – Female Terminal
  • UL31/UL32 – Standard ESL
  • UL34/UL35 – Special Low ESL