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ST12 Series - Polystyrene

Type ST12 Polystyrene capacitors excel in performance characteristics such as capacitance stability, linear negative temperature coefficient, low dielectric absorption, low dissipation factor and high insulation resistance.

Key Features

  • Capacitance stability
  • Linear negative temperature coefficient
  • Low dielectric absorption
  • Low dissipation factor
  • High insulation resistance

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Used in Precision Timing Circuits, Wave Filters, Integrating Circuits & Other Critical Circuitry

These outstanding performance characteristics allow the ST12 capacitors to be used in precision timing circuits, wave filters, integrating circuits and other critical circuitry.

The type ST12 capacitor is offered in a “wrap and fill” configuration. The outer wrap is an electrical grade of Mylar film adhesive tape. The end fill is an epoxy resin specially formulated to bond with the Mylar film outer wrap forming a moisture resistant seal.

 

Additional Information

Capacitance Range

  • 0.001µF to 1.8µF

Capacitance Tolerance

  • K=±10%, J=±5%, G=±2%, F=±1%

Operating Temperature Range

  • -55°C to +85°C

Enclosure/ Construction

  • Extended foil (non-inductive)

Voltage Rating

  • 50VDC to 400VDC

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
EC PART NUMBERMFD50 VDC100 VDC200 VDC400 VDC
BDFJ
DLAWGDLAWGDLAWGDLAWG
ST12_102_0.00100.1870.500240.1870.500240.1870.500240.2050.50024
ST12_122_0.00120.1870.500240.1870.500240.1870.500240.2220.50024
ST12_152_0.00150.1870.500240.1870.500240.1870.500240.2450.50024
ST12_182_0.00180.1870.500240.1870.500240.1870.500240.2660.50022
ST12_222_0.00220.1870.500240.1870.500240.1870.500240.2920.50022
ST12_272_0.00270.1870.500240.1870.500240.1870.500240.3210.50022
ST12_332_0.00330.1870.500240.1870.500240.1870.500240.3520.50022
ST12_392_0.00390.1870.500240.1870.500240.1910.500240.2750.62522
ST12_472_0.00470.1870.500240.1870.500240.2070.500240.2990.62522
ST12_562_0.00560.1870.500240.1870.500240.2230.500240.3250.62522
ST12_682_0.00680.1870.500240.2060.500240.2240.500240.2580.75022
ST12_822_0.00820.1950.500240.2240.500240.2210.625240.2810.75022
ST12_103_0.01000.2120.500240.2440.500240.2420.625240.3080.75022
ST12_123_0.01200.2200.500240.2650.500220.2090.750240.3350.75022
ST12_153_0.01500.2520.500220.2930.500220.2310.750240.3730.75022
ST12_183_0.01800.2780.500220.2660.625220.2500.750240.3350.87522
ST12_223_0.02200.2520.625220.2910.625220.2740.750220.3690.87522
ST12_273_0.02700.2760.625220.3200.625220.3010.750220.4060.87522
ST12_333_0.03300.3030.625220.3520.625220.3300.750220.4480.87522
ST12_393_0.03900.3260.625220.3800.625220.3560.750220.4850.87520
ST12_473_0.04700.3570.625220.3260.750220.3330.875220.4611.00020
ST12_563_0.05600.3880.625220.3550.750220.3610.875220.5031.00020
ST12_683_0.06800.3440.750220.3310.875220.3950.875220.4961.25020
ST12_823_0.08200.3660.750220.3610.875220.3841.000220.5421.25020
ST12_104_0.10000.4020.750220.3980.875220.4121.000220.5961.25020
ST12_124_0.12000.4380.750220.4340.875220.4601.000200.6521.25020
ST12_154_0.15000.4140.875220.4281.000220.4651.250200.6651.50020
ST12_184_0.18000.4530.875200.4661.000200.5081.250200.7281.50020
ST12_224_0.22000.4980.875200.4661.250200.5601.250200.8031.50020
ST12_274_0.27000.4881.000200.5161.250200.6191.250200.8871.50020
ST12_334_0.33000.5371.000200.5681.250200.6831.250200.9801.50020
ST12_394_0.39000.5281.250200.6161.250200.6831.50020---
ST12_474_0.47000.5781.250200.6751.250200.7491.50020---
ST12_564_0.56000.6301.250200.6751.500200.8151.50020---
ST12_684_0.68000.6931.250200.7451.50020------
ST12_824_0.82000.7001.500200.8161.50020------
ST12_105_1.00000.7701.500200.9001.50020------
ST12_125_1.20000.8441.50020---------
ST12_155_1.50000.9401.50020---------
ST12_185_1.80001.0501.50020---------
Note: The fifth character of the part number represents the DC voltage (i.e. B=50 VDC, D=100 VDC, etc.).  Additionally, the tenth character of the part number represents the capacitance tolerance: K=±10%, J=±5%, G=±2%, F=±1%.


ST12chart

Insulation Resistance

Temperature (°C)2585
Megaohms x Microfarads500,00050,000
Insulation Resistance

 

ST12ins

 

Dielectric Strength

Capacitors will withstand a DC potential of 200% rated voltage for two (2) minutes without damage or breakdown. Test voltage is applied and discharged through a resistance of 1 OHM per volt minimum, and at 25°C.

 

Capacitance Change

Temperature (°C)-552585
Percentage Change (typical)1.00-0.6
Capacitance Change

 

 

ST12cap

 

Dissipation Factor

When measured at the frequency specified for capacitance measurements the dissipation factor will not exceed 0.05%.

 

ST12dis

  • Wrap and Fill Axial Leads