1. MLCC
♦ MLCC (Multi Layer Ceramic Capacitor) :
♦ classification
- C: NPO, COG : ε ~ ≤30:
- B: X7R: ε ~ 3,000 : -55 ~125oC: ±15%
- F: Y5V: ε ~ 12,000: -25 ~85oC: -20 ~ + 80%
♦ electrode: from Ag-Pd to Ni (sintering in reducing atmosphere)
♦ about 250 C and 15 L components / mobile phone
♦capacitance range : current: pF ~ 1µF, near future: pF ~ 50µF
♦ size: current: 1005, near future: 0603 - 0402
Advanced Electronic Ceramics I (2004)
MLCC의 분류
용량 전압(V)
1pF 6
l 10
10pF 16
l 25
100pF 50
l 100
Dimension
EIA Code 1nF 200
Code l 250
L W T (Max) BW
10nF 300
0201 0.60 0.30 0.30 0.15
0603 l 500
0402 1.00 0.50 0.50 0.20
1005 100nF 630
l 1,000
1608
0603 1.60 0.80 0.80 0.30
1uF 1,500
0805 2.00 1.25 1.25 0.50
2012 l 2,000
1206 3.20 1.60 1.60 0.50
3216 10uF 2,500
l 3,150
1210 3.20 2.50 2.50 0.60
3225
100uF 4,000
1812 4.50 3.20 2.50 0.80
4532 5,000
2220 5.70 5.00 2.50 1.00
5750 10,000
Advanced Electronic Ceramics I (2004)

2. MLCC의 분류
Class I Class II
온도 범위 -5 5 ~ +1 2 5 C
온도 계수 ( ppm/C) ;유효숫자*승수 공차 ( ppm/C) 온도 범위 용량 변화율
유효숫자 기호 승수 기호 값 기호 저온( C) 기호 고온( C) 기호 값( %) 기호
0 .0 C -1 0 +-3 0 G +1 0 Z +4 5 2 +-1 .0 A
1 .0 M -1 0 1 +-6 0 H -3 0 Y +6 5 4 +-1 .5 B
1 .5 P -1 0 0 2 +-1 2 0 J -5 5 X +8 5 5 +-2 .2 C
2 .2 R -1 0 0 0 3 +-2 5 0 K +1 0 5 6 +-3 .3 D
3 .3 S -1 0 0 0 0 4 +-5 0 0 L +1 2 5 7 +-4 .7 E
4 .7 T +1 5 +-1 0 0 0 M +1 5 0 8 +-7 .5 F
7 .5 U +1 0 6 +-2 5 0 0 N +-1 0 .0 P
+1 0 0 7 +-1 5 .0 R
+1 0 0 0 8 +-2 2 .0 S
+1 0 0 0 0 9 +2 2 , -3 3 T
+2 2 , -5 6 U
COG (NPO) +2 2 , -8 2 V
F
B
Class I Class II
- Small loss, high IR, high stability - high dielectric constant
- Linear and moderate TC between +100and -1500ppm/oC - temperature dependence of the capacitance is large
Advanced Electronic Ceramics I (2004)
MLCC: X7R
1. The most popular intermediate
dielectric-constant materials.
2. Increasingly important as the
improvement of the integration
technology enables the high capacitance
with lower temperature coefficient
(possibility to replace the Ta capacitor)
ε ~ 3,000 : -55 ~125oC: ±15%
From http://www.sem.samsung.co.kr/product/ca/mlcc/information.pdf
Advanced Electronic Ceramics I (2004)

3. MLCC: Y5V
High dielectric constant with high temperature coefficient
SrTiO3
shifter
CaCO3
depressor
From http://www.sem.samsung.co.kr/product/ca/mlcc/information.pdf
Advanced Electronic Ceramics I (2004)
MLCC: Technical Trends: 1. High Capacitance
http://www.sem.samsung.co.kr
Advanced Electronic Ceramics I (2004)

4. MLCC: Technical Trends: 2. Miniaturization
http://www.sem.samsung.co.kr
Advanced Electronic Ceramics I (2004)
MLCC: Technical Trends: 3. Base-Metal Technology
http://www.sem.samsung.co.kr
Advanced Electronic Ceramics I (2004)

5. Multi Layer Ceramic Capacitor
C = nε0εrA/t
C: Capacitance
n: number of layer
ε0 : permittivity in vacuum
εr : dielectric constant
A: area
t: thickness
For high C in small volume
n↑, t ↓ (1005→ 0603 → 0402)
Ni electrode for cost reduction
Advanced Electronic Ceramics I (2004)
전자신문
Advanced Electronic Ceramics I (2004)

6. 삼성전기(대표 강호문)는 지난달부터 0603 크기의
적층세라믹콘덴서(MLCC)를 월 2000만개씩 양산, 기존 1608
크기의 MLCC보다 공급단가가 최소 100배 이상 비싼 고수익
부품사업 확대에 본격 나섰다. 특히 1005와 0603형 크기의 극소형
MLCC 생산비중을 현재 15%선에서 연말까지 30%대로 높일
계획이다.
업계 관계자들은 “범용 부품의 경우 가격경쟁이 치열해
수익성이 떨어지는 반면, 고부가 제품들은 매출 및 수익성
창출효과가 크다”면서 “수동부품업체들이 범용 제품 생산기지를
중국 및 동남아로 이전하는 대신 국내 공장은 고부가 제품 위주로
빠르게 생산구조를 재편하는 추세”라고 강조했다.
전자신문 2002년 9월 5일자
Advanced Electronic Ceramics I (2004)
Multi Layer Ceramic Capacitor
Powder preparation technique
1. Solid State Reaction (past)
2. Hydrothermal (current)
3. Coprecipitation (current)
Starting particle size : < 0.5 µm
- particle size↓ → surface area ↑ → additive content↑
→ difficult to increase solid loading
→ advanced dispersion technique is required
Advanced Electronic Ceramics I (2004)