Ferrite Inductors
铁氧�½�功率电感器
DEM3518C
Inductance Range:
0.56~22µH
Recommended patterns
推荐焊盘尺寸
(Unit: mm)
Note (*) 1.8mm Max. height
(Unit: mm)
FEATURES
•
•
•
•
特点
•
•
•
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薄型构造（最大3.5x3.7毫米的平面，最大高度1.8毫米）
磁性屏�½结构和�½�直流电阻
是多种DC-DC�½�换器电感器设备的理想选择
�½�用温度范围：－40 �½� ＋85°C
Low profile (3.5
×
3.7mm square, 1.8mm Max. height).
Magnetically shielded construction and low DC resistance.
Ideal for a variety of DC-DC converter inductor applications.
Operating temperature (− 40�½�+85°C)
STANDARD PART NUMBERS
标准零件号码
TYPE DEM3518C (Quantity/reel; 2,000 PCS)
零件号码
Part
Number
电感值
(1)
Inductance
(1)
(µH)
0.56
1.2
1.5
2.2
3.3
4.7
6.4
10
12
15
22
公差
Tolerance
(%)
±
30
±
30
±
30
±
20
±
20
±
20
±
20
±
20
±
20
±
20
±
20
最大直流电阻
(2)
(典型)
DC
Resistance
(2)
(mΩ) Max. (Typ.)
29 (24)
36 (30)
42 (35)
48 (40)
60 (50)
72 (60)
102 (85)
174 (145)
186 (155)
222 (185)
342 (285)
最大电感减小电流
(3)
(典型)
Inductance
Decrease Current
(3)
(A) Max. (Typ.)
∆L
L
=30%
最大温度上升电流
(3)
(典型)
Temperature
Rise Current
(3)
∆T=40°C
(A) Max. (Typ.)
3.40 (4.00)
2.90 (3.40)
2.70 (3.20)
2.55 (3.00)
2.25 (2.70)
2.00 (2.45)
1.65 (2.00)
1.25 (1.50)
1.20 (1.45)
1.10 (1.30)
0.88 (1.05)
3.30 (4.40)
2.40 (3.20)
2.10 (2.75)
1.90 (2.55)
1.60 (2.10)
1.35 (1.75)
1.15 (1.50)
0.90 (1.20)
0.85 (1.15)
0.80 (1.05)
0.65 (0.84)
(1) Inductance is measured with a LCR meter 4284A (Agilent
Technologies) or equivalent.
Test frequency at 100kHz
(2) DC resistance is measured with 34420A (Agilent Technologies) or
3541(HIOKI). (Reference ambient temperature 25°C)
(3) Maximum allowable DC current is that which causes a 30%
inductance reduction from the initial value, or coil temperature to
rise by 40°C, whichever is smaller. (Reference ambient
temperature 20°C)
(1) LCR仪表4284A (Agilent技术)或者功�½相同的仪器在100kHz下测
试电感值。
(2)
通过数码万用表34420A（Agilent技术）或者3541(HIOKI)测试直
流电阻。（环境温度为25°C）
(3)
允许最大直流电的范围是以下两者中比较小的一个：引起电感值
从最初值降�½�30%，或者线圈温度升高40°C。
（参考周围环境温度20°C）。
MURATA [ MURATA MANUFACTURING CO., LTD. ]
