Matters to Be Observed When Using This Product

■ When a voltage V (V) is applied to a capacitor C (farad or F), a charge quantity Q (C) is given as Q = C・V.

At this time, a charge current I (A) flowing through the capacitor is given as I = dQ/dt. It follows, therefore, that a pulse

current I (A) is given as the product of a capacitance C (µF) and a voltage variation per time dV/dt, that is, I = C

・dV/dt.

<Allowable dV/dt value of ECQE(F) to which a pulse current is applied 10000 times or less>

From the above table, which indicates that the allowable dV/dt value of ECQE4224KF (rated voltage 400 V DC,

capacitance 0.22 µF) is 37, the allowable pulse current value of ECQE4224KF is calculated at 8 Ao-p.Ensure,

however, that the RMS current value is equal to or lower than the allowable RMS current value.

23-Apr-25

275 (2.7)

335 (3.3)

395 (3.9)

6

475 (4.7)

8

565 (5.6)

685 (6.8)

185 (1.8)

10

225 (2.2)

825 (8.2)

106 (10.0)

63

334 (0.33)

394 (0.39)

18

474 (0.47)

564 (0.56)

22

22

684 (0.68)

824 (0.82)

48

105

　(1.0)

125

　(1.2)

11

155

　(1.5)

18

683 (0.068)

823 (0.082)

104 (0.10

）

124 (0.12)

37

154 (0.15)

184 (0.18)

33

224 (0.22)

274 (0.27)

103 (0.010)

48

131

273

123 (0.012)

153 (0.015)

183 (0.018)

223 (0.022)

273 (0.027)

333 (0.033)

393 (0.039)

78

473 (0.047)

563 (0.056)

116

Capacitance

(μF)

Type

ECQE(F)

ECQE(F)

ECQE(F)

ECQE(F)

100 V DC

250 V DC

400 V DC

630 V DC