B18-11

B18 blocks (capacitor matrix) are designed to operate in direct and alternating current circuits, as well as in pulse mode. The main purpose of the blocks is their use in computer devices together with integrated microcircuits and resistor blocks. Using these blocks allows for standardization of mounting technology and provides the ability to reduce dimensions and lower the weight of equipment. Blocks are manufactured in an all-climatic design.

B18 basic specifications

Note: Capacitors of the blocks, marked with an asterisk are fixed polar capacitors, all the other - fixed non-polar capacitors.

Loss-angle tangent, not more than:
for non-polar capacitors B18-1 — B18-5, B18-7 — B18-11,
B18-13, B18-15 — B18-23 ................................................................................................... 0.035
for non-polar capacitors B18-12, B18-14 ............................................................................................................ 0.0015
for polar capacitors B18-1, B18-10. B18-19 — B18-23........................................................................................................ 0.08
for polar capacitors B18-18........................................................................................................ 0.1

Insulation resistance of the non-polar capacitors
in normal climate environment, not lower than:
B18-1 — B18-5, B18-7, B18-8, B18-10, B18-18, B18-19................................................................................................. 1000 MOhm
B18-11................................................................................................... 750 MOhm
B18-9................................................................................................... 2300 MOhm
B18-13, B18-15 — B18-17................................................................................................. 3000 MOhm
B18-12, B18-14............................................................................................... 10000 MOhm

Leakage current of the polar capacitors, not more than:
B18-1, B18-10, B18-18 — B18-23 .......................................................................................................... 2 μA

Temperature coefficient of capacity
B18-12 and B18-14.............................................................................................. (1500± 250)10·^-6 1/°С

Operational limits

Environment temperature........................................................................................ from —60 to + 85° С

Relative air humidity at temperature 35 °С..................................................................................................... up to 98%

Reduced atmospheric pressure ............................................................................................ 0.0000013 hPa (10^-6 mm Hg)

Minimum lifetime....................................................................................... 15000 h

Capacitance change, not more than:
of non-polar capacitors B18-1, B18-2, B18-4, B18-5, B18-7, B18-8.................................................................................................... ±20 %
B18-12, B18-14................................................................................................... ±10 %
B18-9, B18-13, B18-16, B18-22, B18-23................................................................................................... ±30 %
B18-3, B18-11, B18-13, B18-15, B18-17, B18-18, B18-19, B18-20, B18-21....................................................................................................... -30%
of polar capacitors B18-1, B18-10, B18-18, B18-19,
B18-20, B18-21, B18-22, B18-23...................................................................................................... ± 50 %

Loss-angle tangent, not more than:
of non-polar capacitors B18-12, B18-14................................................................................................ 0.001
B18-1 — B18-5, B18-7 — B18-11, B18-13, B18-15 — B18-23................................................................................................... 0.1
of polar capacitors B18-1, B18-10, B18-18 — B18-23...................................................................................................... 1

Insulation resistance, not lower than:
of non-polar capacitors B18-1, B18-2— B18-5, B18-7,
B18-8, B18-10, B18-13, B18-15 — B18-17, B18-20 — B18-23...................................................................................................... 3 MOhm
B18-19................................................................................................... 2.3 MOhm
B18-11.................................................................................................. 0.75 MOhm
B18-12, B18-14.................................................................................................... 10 MOhm
B18-18, B18-19.................................................................................................... 50 MOhm

Leakage current of polar capacitors B18-1, B18-10, B18-18, B18-19, B18-23................................................................................................... 100 μA

Storage shelf-life................................................................................................... 12 years