Electronic Components / Devices

BCF Series, BSF Series, BCS Series

BCF Series, BSF Series, BCS Series

Features


Block type ceramic capacitors with high capacitance / high pressure-resistant (630V/2.2μF~50V/350μF). They achieve large ripple current capacitance by low ESR, and high frequency characteristics by low ESL. Specifications can be customized,

Applications


Inverter of electric motor (smoothing and noise reduction), power supply of telecommunication equipments/radar for aerospace industry, decoupling of high frequency power supply for RF sputtering machine etc., Machines which need long lifetime (ex: base stations, transmitters, etc.)

Structure


Rated value, dimension


BCF,BSF Dimensions (Capacitance)
Spec L(㎜)
10.0±0.5 15.0±0.5 25.0±0.5 35.0±0.5
50V 100㎌ 150㎌ 250㎌ 350㎌
100V 47㎌ 70㎌ 120㎌ 160㎌
250V 10㎌ 15㎌ 25㎌ 35㎌
630V 3.3㎌ 4.7㎌ 7.7㎌ 12㎌

※T=16.0㎜ max

BCS Dimensions (Capacitance)
Spec Type① Type② Type③ Type④
L1(㎜) L2(㎜) L1(㎜) L2(㎜) L1(㎜) L2(㎜) L1(㎜) L2(㎜)
18.0±0.3 10.0±0.3 23.0±0.3 15.0±0.3 33.0±0.3 25.0±0.3 43.0±0.3 35.0±0.3
50V 100㎌ 150㎌ 250㎌ 350㎌
100V 47㎌ 70㎌ 120㎌ 160㎌
250V 10㎌ 15㎌ 25㎌ 35㎌
630V 2.2㎌ 3.3㎌ 5.5㎌ 7.7㎌

Available Range


EIA Symbol Rated Voltage (Vdc) Capacitance(㎌) Operating Temp. Range(°C)
X7R 50 100~350 -55~+125
X7R 100 47~160 -55~+125
X7R 250 10~35 -55~+125
X7R 630 2.2~12 -55~+125

PCB mounting pattern


Type A B C
19.0 14.0 10.0
24.0 19.0 15.0
34.0 29.0 25.0
44.0 39.0 35.0

Comparison of Ripple Absorption Efficiency


For smoothing ability of PWM (Pulse Width Modulation) square wave (for example, switching frequency at 500kHz), block capacitors can achieve better smoothing characteristic with 100uF, compared to aluminum electrolysis capacitors 470uF. As switching frequency goes up higher, it’s possible to reduce the capacitance of block capacitors and miniaturize the size of equipments.

Switching frequency and the substitution
capacitance value of the Al electrolysis condenser
SW freq. Aluminium(㎌) Ceramic(㎌) Capacity Ratio
10kHz 470 220 1/2
20kHz 470 100 1/5
50kHz 470 47 1/10
100kHz 470 22 1/20
200kHz 470 10 1/50
500kHz 470 4.7 1/100
1MHz 470 2.2 1/200

Characteristics data (Main product examples, reference)


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