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The SCD3521 Series from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. offers unshielded SMD power inductors designed for surface mounting equipment. These low-cost, silver-plated inductors feature a small size with high rated current capability and low DC resistance. They are suitable for various applications including power supplies for VTRs, LCD televisions, notebook PCs, portable communication equipment, and DC/DC converters. The series is RoHS, Halogen Free, and REACH compliant.
Product Attributes
Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
Series: SCD3521
Type: Unshielded SMD Power Inductors
Design: Silver plated type, Low cost design
Certifications: RoHS, Halogen Free and REACH Compliance
Packaging: Bulk Package (B) or Tape & Reel (T)
Technical Specifications
Part No.
Inductance (H)
Inductance Tolerance
Test Freq @0A
SRF Typ (MHz)
DCR Typ () Max
Saturation Current (A) Max (Isat)
Temperature Rise Current (A) Max (Irms)
Dimensions (LWH) (mm)
SCD3521-1R0M
1.0
M (20%)
100KHz
120
0.045
3.30
2.20
3.52.1
SCD3521-1R2M
1.2
M (20%)
100KHz
100
0.050
3.00
2.10
3.52.1
SCD3521-1R5M
1.5
M (20%)
100KHz
85
0.055
2.70
1.70
3.52.1
SCD3521-1R8M
1.8
M (20%)
100KHz
75
0.070
2.50
1.65
3.52.1
SCD3521-2R2M
2.2
M (20%)
100KHz
62
0.085
2.30
1.60
3.52.1
SCD3521-2R7M
2.7
M (20%)
100KHz
53
0.100
2.20
1.40
3.52.1
SCD3521-3R3M
3.3
M (20%)
100KHz
47
0.120
1.95
1.04
3.52.1
SCD3521-3R9M
3.9
M (20%)
100KHz
41
0.125
1.85
1.00
3.52.1
SCD3521-4R7M
4.7
M (20%)
100KHz
38
0.135
1.60
1.00
3.52.1
SCD3521-5R6M
5.6
M (20%)
100KHz
33
0.145
1.55
0.95
3.52.1
SCD3521-6R8M
6.8
M (20%)
100KHz
31
0.200
1.40
0.95
3.52.1
SCD3521-8R2M
8.2
M (20%)
100KHz
27
0.250
1.20
0.92
3.52.1
SCD3521-100M
10
M (20%)
100KHz
23
0.320
1.05
0.90
3.52.1
SCD3521-120M
12
M (20%)
100KHz
21
0.350
1.00
0.85
3.52.1
SCD3521-150M
15
M (20%)
100KHz
19
0.460
0.90
0.75
3.52.1
SCD3521-180M
18
M (20%)
100KHz
17
0.520
0.80
0.70
3.52.1
SCD3521-220M
22
M (20%)
100KHz
15
0.650
0.75
0.60
3.52.1
SCD3521-270M
27
M (20%)
100KHz
14
0.750
0.70
0.55
3.52.1
SCD3521-330M
33
M (20%)
100KHz
12
0.920
0.60
0.50
3.52.1
SCD3521-390M
39
M (20%)
100KHz
11
1.120
0.55
0.48
3.52.1
SCD3521-470M
47
M (20%)
100KHz
10
1.270
0.50
0.45
3.52.1
SCD3521-560M
56
M (20%)
100KHz
9.3
1.500
0.45
0.30
3.52.1
SCD3521-680M
68
M (20%)
100KHz
8.4
2.000
0.40
0.26
3.52.1
SCD3521-820M
82
M (20%)
100KHz
7.5
2.150
0.35
0.23
3.52.1
SCD3521-101M
100
M (20%)
100KHz
6.8
2.800
0.34
0.20
3.52.1
SCD3521-121M
120
M (20%)
100KHz
6.2
3.400
0.33
0.18
3.52.1
SCD3521-151M
150
M (20%)
100KHz
5.5
4.200
0.28
0.16
3.52.1
SCD3521-181M
180
M (20%)
100KHz
5.0
4.500
0.27
0.15
3.52.1
SCD3521-221M
220
M (20%)
100KHz
4.5
5.700
0.25
0.14
3.52.1
SCD3521-271M
270
M (20%)
100KHz
4.0
8.500
0.22
0.10
3.52.1
SCD3521-331M
330
M (20%)
100KHz
3.6
9.500
0.19
0.09
3.52.1
Environmental Data
Operating Temperature: -40 to +125 (Including coils self-temperature rise)
Test Equipment
Inductance (L): HP4284A, HP4285A LCR meter or equivalent
Saturation Current (Isat) & Temperature Rise Current (Irms): HP4284+42841A or equivalent
Self-Resonant Frequency (SRF): Agilent E4991A or equivalent
DC Resistance (DCR): Chroma 16502 or equivalent
Dimensions (mm)
Part No.
A
B
C
D
H
I
J
SCD3521
3.50.3
3.00.3
2.10.3
1.0
3.5
1.6
0.8
Recommended Land Pattern
(Image placeholder for Recommended Land Pattern)
Product Packaging
Tape and Reel Specifications: (Dimensions are in mm)
(Image placeholder for Tape and Reel Specifications)
Reel Dimensions: (mm)
(Image placeholder for Reel Dimensions)
Tape Dimension: (mm)
(Image placeholder for Tape Dimension)
Cover tape peel off condition:
a) Cover tape peel force shall be 10 to 120g
b) Noodle strip peeling angle 165 to 180
Packing quantity:
Part No.
Tape Dimension W (mm)
P (mm)
W1 (mm)
Reel Dimensions (mm) A
B
C
D
REEL (PCS)
Inside Box (PCS)
Outside Carton (PCS)
Total Quantity
SCD3521
12
8
5.5
12.4
100
13
330
3000
12000
48,000
Reminders for Using These Products
Storage period is within 12 months. Storage conditions: temperature 5~40C, humidity 35~65% RH or less.
Do not use or store in environments with gas corrosion (salt, acid, alkali, etc.).
Avoid direct contact with terminals with bare hands due to oil secretions.
Handle products carefully to prevent damage from dropping or improper removal.
Do not bend terminals with excessive stress to avoid wire fracture.
Do not rinse coils; contact the manufacturer if cleaning is necessary.
Do not expose products to magnets or magnetic fields.
Preheat components before soldering; ensure the temperature difference between solder and chip does not exceed 150C.
Soldering corrections after mounting should be within specified conditions. Overheating may cause short circuits, performance degradation, or reduced lifespan.
Sufficient allowance should be made for thermal design due to self-heating when power is ON.
For non-magnetic shield types, carefully lay out coils on the circuit board to prevent malfunctions due to magnetic interference.
Company Profile
Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...
Company Profile
Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...