Document 139-1
Output Power Chokes – Toroid Styles
The DMT power inductors are designed primarily for use
as output chokes in switching power supplies. The toroid
core design offers the highest inductance values in the
smallest part size, while minimizing external magnetic
fields.
Inductance values range from 7 µH to over 1.4 mH with
current ratings as high as 12 Amps.
These parts are ideal for any application requiring a high
DC current bias. They are well suited for use in switch-
mode power supplies and can be used as ripple filters and
differential mode EMI filters.
• All insulating materials 130°C or higher.
• Industry standard footprint.
• UL 1446 approved Insulation System available.
• All plastic material UL94V-0.
Schematic
4
H max
1
Footprint
Y
4
1
2
1
2
2
4
2
X
for mounting stability
L max
0.120/0.180
3,05/4,57
W max
DMT1 Series
Part
number
DMT1-180-1.5
DMT1-84-2.4
DMT1-43-3.8
DMT1-26-5.1
DMT1-16-6.7
DMT1-7-10
Inductance
1
min (µH)
180
84
43
26
16
7
Current
rating
(A)
1.5
2.4
3.8
5.1
6.7
10.0
DCR max
(Ohms)
0.29
0.14
0.07
0.04
0.02
0.01
H
max
1.1/27,9
1.1/27,9
1.1/27,9
1.1/27,9
1.1/27,9
1.1/27,9
L
max
1.3/33,0
1.3/33,0
1.3/33,0
1.3/33,0
1.3/33,0
1.3/33,0
W
max
0.7/17,8
0.7/17,8
0.7/17,8
0.7/17,8
0.7/17,8
0.7/17,8
X
±0.01/0,25
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
Y
±0.01/0,25
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
1. Minimum inductance at rated current. Tested at 15.75 kHz, 10 Gauss level.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Document 139-1
Revised 12/05/02
Document 139-2
Output Power Chokes – Toroid Styles
Schematic
4
H max
1
Y
4
1
2
1
2
2
4
Footprint
2
X
for mounting stability
L max
0.120/0.180
3,05/4,57
W max
DMT2 Series
Part
number
DMT2-567-1.5
DMT2-273-2.4
DMT2-149-3.8
DMT2-79-6
DMT2-47-8.2
DMT2-26-11
DMT2-796-1.5
DMT2-380-2.4
DMT2-200-3.8
DMT2-134-4.8
DMT2-80-6.3
DMT2-49-8
DMT2-20-12
Inductance
1
min (µH)
567
273
149
79
47
26
796
380
200
134
80
49
20
Current
rating
(A)
1.5
2.4
3.8
6.0
8.2
11.0
1.5
2.4
3.8
4.8
6.3
8.0
12.0
DCR max
(Ohms)
0.56
0.26
0.13
0.07
0.04
0.02
0.79
0.38
0.19
0.10
0.05
0.03
0.02
H
max
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.6/40,6
1.6/40,6
1.6/40,6
1.6/40,6
1.75/44,5
1.6/40,6
1.7/43,2
L
max
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.4/35,6
1.6/40,6
1.6/40,6
1.6/40,6
1.6/40,6
1.7/43,2
1.6/40,6
1.6/40,6
W
max
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
0.9/22,9
X
±0.01/0,25
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
0.90/22,8
Y
±0.01/0,25
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
1. Minimum inductance at rated current. Tested at 15.75 kHz, 10 Gauss level.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
DMT3 Series
Part
number
DMT3-1439-1.5
DMT3-695-2.4
DMT3-402-3.7
DMT3-257-4.9
DMT3-138-6
DMT3-77-8
DMT3-35-12
Inductance
1
min (µH)
1439
695
402
257
138
77
35
Current
rating
(A)
1.5
2.4
3.7
4.9
6.0
8.0
12.0
DCR max
(Ohms)
1.18
0.55
0.28
0.15
0.07
0.04
0.02
H
max
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
2.0/50,8
L
max
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
1.9/48,3
2.0/50,8
W
max
0.95/24,1
0.95/24,1
0.95/24,1
0.95/24,1
0.95/24,1
0.95/24,1
0.95/24,1
X
±0.01/0,25
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
Y
±0.01/0,25
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
1. Minimum inductance at rated current. Tested at 15.75 kHz, 10 Gauss level.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Document 139-2
Revised 12/03/02
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