LD Series
Metalized Drum Core Power Inductor
Applications
• Buck or boost inductor
• Noise filtering and output filter chokes
• Computers
• Power supplies
• Test equipment instrumentation
Environmental Data
• Storage temperature: -40°C to +125°C
• Operating temperature: -40°C to +125°C (range is application
specific). Temperature rise is approximately 40°C at rated rms
current.
• Solder reflow temperature: 260°C max. for 10 seconds max.
Packaging
Description
• Supplied in tape and reel packaging, LD1 (2,000),
LD2 (1,000) parts per reel
• Metalized drum core design utilizes board space
• Current Range from 4.46 amps to 0.52 amps
• Inductance range from 1.0µH to 470µH
• Ferrite core material
(1)
(2)
(3)
(4)
Part
Number
Rated
Inductance
(µH)
1.0
OCL
I
I
DCR
rms
sat
Nominal
Amps
Amps
(Ω)
(Max.)
0.0330
0.0380
0.0420
0.0470
0.0520
0.0580
0.0760
0.0940
0.1010
0.1170
0.1320
0.1820
0.2100
0.2350
0.3380
0.3780
0.5220
0.5400
0.5870
0.8440
0.9370
1.12
LD1-1R0-R
LD1-1R4-R
LD1-1R8-R
LD1-2R2-R
LD1-2R7-R
LD1-3R3-R
LD1-3R9-R
LD1-4R7-R
LD1-5R6-R
LD1-6R8-R
LD1-8R2-R
LD1-100-R
LD1-120-R
LD1-150-R
LD1-180-R
LD1-220-R
LD1-270-R
LD1-330-R
LD1-390-R
LD1-470-R
LD1-560-R
LD1-680-R
1.00
1.40
1.80
2.20
2.70
3.30
3.90
4.70
5.60
6.80
8.20
10.0
12.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
56.0
68.0
2.66
2.47
2.35
2.22
2.11
2.00
1.75
1.57
1.51
1.41
1.32
1.13
1.05
0.99
0.83
0.78
0.67
0.66
0.63
0.52
0.50
0.46
4.46
3.41
3.05
2.76
2.52
2.32
2.14
2.00
1.75
1.56
1.41
1.28
1.18
1.05
0.98
0.89
0.87
0.75
0.68
0.61
0.57
0.52
1.4
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
Notes:
4) DCR limits @ 20°C
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V , 0.0Adc
5) Part number definition: LDx-yyy-R
rms
+/-20% except for LD1-330-R to LD1-331-R and LD2-470-R to LD2-471-R which is +/-10%
2) RMS current for an approximate ∆T of 40°C. It is recommended that the temperature of the
part not exceed 125°C
LDx = product code and size, -yyy = inductance value in µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
3) Peak current for an approximate 10% rolloff at 20°C
1207 BU-SB07325
Page 1 of 3
Data Sheet 4310