Allied
Part
Number
SMTC2120 SMD HIGH CURRENT TOROID
DCR IDC
(A)
L(uH)
RoHS
ALLIED COMPONENTS INTERNATIONAL
714-665-1140www.alliedcomponents.com
All specifications subject to change without notice.
REVISED 06/09/11
@1ΚΗΖ
± 20% m(Ω)
Max
IDC (A)
to decrease L
by 30%
D i m
A Max
mm / (in.)
Pg. 1 of 2
Dimensions: (Inches)
mm
Features
• High Current Capacity
• SMD
• Low Magnetic Radiation
Electrical
Inductance range: 1.0uh to 1000uh
Tolerance: 1.0uh~8.2uh 20%
Operating Temp: -55ºC ~ +105ºC
Test Frequency: 1KHz 0.1v
Storage Temp: -55ºC ~ +105ºC
Physical
Packaging: 40 Bags, 400 Carton
Marking: EIA Inductance Code
Test Equipment
(L) & (DCR): HP4263
Current Source: Model 1320 & 11021 LCR
Resistance to Solder Heat
Solder Temp: 260ºC 10 sec. max
Recommended Pad Layout
SMTC2120-1R0M-RC 1.0 2 25.4 34.4 20.83/(0.82)
SMTC2120-1R2M-RC 1.2 2 25.4 39.2 20.83/(0.82)
SMTC2120-1R5M-RC 1.5 3 22.0 35.6 20.83/(0.82)
SMTC2120-1R8M-RC 1.8 3 22.0 32.9 20.83/(0.82)
SMTC2120-2R2M-RC 2.2 3 19.7 29.5 20.83/(0.82)
SMTC2120-2R7M-RC 2.7 3 19.7 26.3 20.83/(0.82)
SMTC2120-3R3M-RC 3.3 4 18.0 34.0 20.83/(0.82)
SMTC2120-3R9M-RC 3.9 4 18.0 21.8 20.83/(0.82)
SMTC2120-4R7M-RC 4.7 5 16.6 20.0 20.83/(0.82)
SMTC2120-5R6M-RC 5.6 5 15.6 18.2 20.83/(0.82)
SMTC2120-6R8M-RC 6.8 6 14.7 16.7 20.83/(0.82)
SMTC2120-8R2M-RC 8.2 6 14.7 15.1 20.83/(0.82)
±10%
SMTC2120-100K-RC 10 7 13.9 13.7 20.83/(0.82)
SMTC2120-120K-RC 12 8 12.7 12.6 20.83/(0.82)
SMTC2120-150K-RC 15 9 12.2 11.0 20.83/(0.82)
SMTC2120-180K-RC 18 9 11.8 10.4 20.83/(0.82)
SMTC2120-220K-RC 22 11 11.0 9.23 20.83/(0.82)
SMTC2120-270K-RC 27 12 10.4 8.33 20.83/(0.82)
SMTC2120-330K-RC 33 13 10.1 7.54 20.83/(0.82)
SMTC2120-390K-RC 39 14 9.6 6.98 20.83/(0.82)
SMTC2120-470K-RC 47 19 8.2 6.30 20.07/(0.79)
SMTC2120-560K-RC 56 21 7.9 5.74 20.07/(0.79)
SMTC2120-680K-RC 68 29 6.7 5.29 19.56/(0.77)
SMTC2120-820K-RC 82 32 6.4 4.84 20.10/(0.87)
SMTC2120-101K-RC 100 35 6.1 4.32 20.10/(0.87)
SMTC2120-121K-RC 120 39 5.8 3.94 20.10/(0.87)
SMTC2120-151K-RC 150 43 5.5 3.56 20.10/(0.87)
SMTC2120-181K-RC 180 47 5.3 3.22 21.08/(0.83)
SMTC2120-221K-RC 220 52 5.0 2.93 21.08/(0.83)
SMTC2120-271K-RC 270 72 4.2 2.66 19.81/(0.78)
SMTC2120-331K-RC 330 100 3.6 2.50 19.81/(0.78)
SMTC2120-391K-RC 390 108 3.5 2.18 21.59/(0.85)
SMTC2120-471K-RC 470 119 3.3 2.00 21.59/(0.85)
SMTC2120-561K-RC 560 130 3.2 1.82 21.59/(0.85)
SMTC2120-681K-RC 680 142 3.0 1.67 21.59/(0.85)
SMTC2120-821K-RC 820 157 2.9 1.51 21.59/(0.85)
SMTC2120-102K-RC 1000 215 2.5 1.37 20.83/(0.82)
(addtional values available)
10uh~1000uh 10%
∆ T=30ºC Typical at rated IDC
Temp Rise:
SMTC2120 SMD HIGH CURRENT TOROID
RoHS
ALLIED COMPONENTS INTERNATIONAL
714-665-1140www.alliedcomponents.com
All specifications subject to change without notice.
REVISED 06/09/11
Inductance vs. Current
IDC (A)
IDC (A)
IDC (A)
IDC (A)
IDC (A)
L(uH)
to decrease L
to decrease L
to decrease L
to decrease L
to decrease L
by 10%
by 20%
by 30%
by 40%
by 50%
1.0 15.3 24.5 34.4 45.9 61.3
1.2 17.4 27.9 39.2 52.2 69.7
1.5 15.8 25.3 35.6 47.4 63.3
1.8 14.6 23.4 32.9 43.8 58.5
2.2 13.1 21.0 29.5 39.3 52.5
2.7 11.7 18.7 26.3 35.1 46.9
3.3 15.1 24.2 34.0 45.3 60.5
3.9 9.70 15.5 21.8 29.1 38.9
4.7 8.90 14.3 20.0 26.7 35.7
5.6 8.10 13.0 18.2 24.3 32.4
6.8 7.40 11.9 16.7 22.2 29.6
8.2 6.70 10.7 15.1 20.1 26.8
10 6.10 9.77 13.7 18.3 24.4
12 5.60 8.97 12.6 16.8 22.4
15 4.90 7.85 11.0 14.7 19.6
18 4.60 7.37 10.4 13.8 18.4
22 4.10 6.57 9.23 12.3 16.4
27 3.70 5.93 8.33 11.1 14.8
33 3.35 5.37 7.54 10.1 13.4
39 3.10 4.97 6.98 9.30 12.4
47 2.80 4.49 6.30 8.40 11.2
56 2.55 4.09 5.74 7.65 10.2
68 2.35 3.76 5.29 7.05 9.41
82 2.15 3.44 4.84 6.45 8.61
100 1.92 3.08 4.32 5.76 7.69
120 1.75 2.80 3.94 5.25 7.01
150 1.58 2.53 3.56 4.74 6.33
180 1.43 2.29 3.22 4.29 5.73
220 1.30 2.08 2.93 3.90 5.21
270 1.18 1.89 2.66 3.54 4.73
330 1.11 1.78 2.50 3.33 4.45
390 0.97 1.55 2.18 2.91 3.89
470 0.89 1.43 2.00 2.67 3.57
560 0.81 1.30 1.82 2.43 3.24
680 0.74 1.19 1.67 2.22 2.96
820 0.67 1.07 1.51 2.01 2.68
1000 0.61 0.98 1.37 1.83 2.44
Pg. 2 of 2
