参数资料
型号: HM78D-755680MLFTR
厂商: TT Electronics/BI
文件页数: 1/4页
文件大小: 0K
描述: INDUCTOR COUPLED 68UH SMD
标准包装: 1,000
系列: HM78D
每一线圈的电感: 68µH
线圈数目: 2
电流: 517mA
容差: ±20%
电感 - 串行连接: 278.7µH
电感 - 并行连接: 68µH
DC 电阻(DCR): 530 毫欧
安装类型: 表面贴装
尺寸/尺寸: 0.303" L x 0.303" W(7.70mm x 7.70mm)
高度: 0.189"(4.80mm)
包装: 带卷 (TR)
·
Surface Mount
Coupled Inductors
MODELS HM78D-1210XXXMLF HM78D-1210XXXMLF
Ambient Temperature, Maximum +85°C
· Operating Temperature Range -40°C to +125°C
· Operating Temperature Range -40°C to +125°C
· Temperature Rise, Maximum 40°C
· Ideal for SEPIC applications, high inductance, high efficiency
and excellent current handling in rugged, low cost part
Use as DC-DC converter and in applications like hand
phones, CD/DVD player, digital camera, GPS system.
Also used as two single inductors connected series or
·
parallel or as 1:1 transformer
RoHS Compliant
Electrical Schematic
Coupled inductor,
transformer and
SEPIC modes
Specifications @ 25°C
Leads connected in parallel
Autotransformer
and series modes
Parallel mode
Leads connected in series
Part Number
HM78D-12104R7MLF
HM78D-12106R8MLF
HM78D-12108R2MLF
HM78D-1210100MLF
HM78D-1210220MLF
HM78D-1210330MLF
HM78D-1210470MLF
HM78D-1210560MLF
HM78D-1210680MLF
HM78D-1210101MLF
HM78D-1210121MLF
HM78D-1210331MLF
HM78D-1210471MLF
L (μH)
4.70±20%
6.80±20%
8.20±20%
10.00±20%
22.00±20%
33.00±20%
47.00±20%
56.00±20%
68.00±20%
100.00±20%
120.00±20%
330.00±20%
470.00±20%
DCR
Max ( ? )
0.014
0.017
0.018
0.020
0.040
0.050
0.065
0.081
0.098
0.128
0.170
0.440
0.570
Irated
(A)
10.60
10.40
9.50
8.60
5.40
4.50
3.70
3.28
2.96
2.54
2.38
1.32
1.22
Isat
(A)
18.00
14.20
12.85
11.75
8.20
6.60
5.50
4.90
4.45
3.70
3.40
2.10
1.80
Irms
(A)
3.250
3.100
2.250
3.200
2.700
2.000
1.900
0.850
0.800
0.700
0.630
0.410
0.300
L (μH)
18.80±25%
27.20±25%
32.80±25%
41.12±25%
88.00±25%
132.00±25%
188.00±25%
224.00±25%
272.00±25%
400.00±25%
480.00±25%
1320.00±25%
1880.00±25%
DCR
Max ( ? )
0.056
0.068
0.072
0.080
0.160
0.200
0.260
0.324
0.392
0.512
0.680
1.760
2.280
Irated
(A)
5.30
5.20
4.75
4.30
2.70
2.25
1.85
1.64
1.48
1.27
1.19
0.66
0.61
Isat
(A)
9.00
7.10
6.45
5.85
4.10
3.30
2.75
2.45
2.20
1.85
1.70
1.05
0.90
Irms
(A)
1.625
1.550
1.125
1.600
1.350
1.000
0.950
0.425
0.400
0.350
0.315
0.205
0.150
Notes : (1) Inductance is measured at 100kHz, 0.1Vrms, 0Adc.
(2) When leads connected in parallel, DCR is half the value. When lead connected in series, DCR is twice the value
(3) Isat current is the saturation current at which inductance rolls off approximately 30% from its initial (zero DC) value.
(4) Irms equals DC current, that causes component to increase by 40°C from 25°C ambient.
(5) Irated current is the rated current at which inductance rolls off approximately 10% from its initial (zero DC) value.
Mechanical Outline (mm)
Recommended PCB Patern
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com
? TT electronics plc
Rev : 1
Last Updated : 19 Aug 2013
05.12
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