SRT Microcéramique Low Voltage BX Capacitor Series (50-100V)

SRT Microcéramique Low Voltage BX Capacitor Series (50-100V)
  • Low voltage ceramic chip MLCC capacitors
  • Available in capacitance ratings between 100pF and 1µF
  • Available in standard chip sizes from 0805 to 2225
  • Dissipation factor under 0.025 at 1kHz for C ≥ 1nF and under 0.025 at 1MHz for C ≤ 1nF
  • Selection of Voltage ratings: 50V or 100V
  • Selection of tolerances: ±0.25pF, ±0.5pF, ±1%, ±2%, ±5%, ±10%, ±20% and -20% to +80%
  • Operating temperature between -55°C and +125°C

The BX low voltage, stable ceramic chip MLCC capacitor series from SRT Microcéramique offers improved voltage behaviour compared to the X7R series. These capacitors feature a wide range of options to suit any demand, including capacitance between 100pF to 1µF across a range of chip sizes from 0805 to 2225, a wide selection of tolerances (±0.25pF, ±0.5pF, ±1%, ±2%, ±5%, ±10%, ±20% and -20% to +80%), voltages (50V or 100V) and a range of terminations. As with all SRT-MC components, the BX capacitors are popular in safety-critical industries thanks to their excellent quality and reliability and are manufactured according to MIL Specifications. Their operating temperature is between -55°C and +125°C.

Termination options available include:

  • Palladium-Silver
  • Gold-plated Silver
  • Tin-plated Nickel
  • Tin-plated Copper
  • Flexible Tin-plated polymer (Microflex), improving the resistance to brittle fracture if the board is subject to flexion or vibration

While the BX series offers a large number of options, customisation is possible on all SRT Microcéramique components – if none of the given options are suitable for your application, please contact us to discuss the custom solutions available.

Typical applications for the SRT-MC BX series of low voltage ceramic capacitors include:

  • Passing
  • Coupling
  • Filtering
  • Blocking

The below table gives the specifications overview for each low voltage capacitor model available within the BX-series (50V-100V):

SRT Microcéramique Low Voltage X7R series
Additional Features
  • Stable ceramic capacitor
  • Better voltage behaviour compared to X7R dielectric
  • Highest quality and reliability, suitable for safety-critical industries
  • Dissipation factor up to 0.025 at 1kHz for C over 1nF, and up to 0.025 at 1MHz for C up to 1nF
  • Insulation resistance of 25°C/Un 105 MΩ or 1000 Ohm-Farad whichever is less and 125°C/Un 104 MΩ or 100 Ohm-Farad whichever is less
  • Dielectric strength test performed per method 103 of EIA 198-2-E
Dielectric BX
Operating Temperature -55°C to +125°C
  • 0805
  • 1206
  • 1210
  • 1812
  • 1825
  • 2220
  • 2225
TCR ±15% (with 0Vdc applied), +15%/-25% (with voltage applied)
  • Palladium-Silver
  • Nickel  with Gold plated finish
  • Nickel with Tin plated finish
  • Microflex (Polymer with Tin plated finish)
  • Copper with Tin plated finish
  • ±0.25pF
  • ±0.5pF
  • ±1%
  • ±2%
  • ±5%
  • ±10%
  • ±20%
  • -20%, +80%
Voltage Reference
  • 50V
  • 100V

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:



PDF Document SRT Microceramique Low Voltage BX and X7R Capacitor series datasheet
PDF Document SRT Microcéramique's Microflex - Innovative flexible termination option for chip capacitors

Below is an example of the part number breakdown for the SRT Microcéramique X7R & BX Low Voltage Capacitor Series :

SRT Microcéramique X7R & BX Low Voltage Capacitor Series

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

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Available Options

Please refer to the table at the bottom of Description tab and/or the Datasheet available from Technical Library to see available capacitance values for each chip size and voltage combination.