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.
• Industry standard footprint.
• UL1446 Class B (130°C) Insulation System (UL File E83628)
• All plastic material UL94V-0.
Recommended
Board Layout
4
H max
Y
1
1
Z
2
2
4
Z
V
Schematic
1
2
X
0.063
1,6
4
2
for mounting
stability
0.052
1,32
L max
0.120/0.180
3,05/4,57
0.052
1,32
(pin 2)
W max
Terminations:
Tin-silver over copper
Weight
DMT1 series:
13.0 – 16.4 g
DMT2 series:
48.7 – 56.3 g
DMT3 series:
90.2 – 100.5 g
DMT1 Series
L
1
Part
number
DMT1-7-10L
DMT1-16-6.7L
DMT1-26-5.1L
DMT1-43-3.8L
DMT1-84-2.4L
DMT1-180-1.5L
min
(µH)
7
16
26
43
84
180
Current
DCR
SRF
rating
max
typ
(A)
(Ohms) (MHz)
10.0
0.01
28.8
6.7
0.02
16.6
5.1
0.04
11.5
3.8
0.07
7.28
2.4
0.14
4.37
1.5
0.29
1.92
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
Z
±0.01/0,25 pins 1 & 4
0.40/10,2 0.052/1,32
0.40/10,2 0.041/1,04
0.40/10,2 0.052/1,32
0.40/10,2 0.052/1,32
0.40/10,2 0.052/1,32
0.40/10,2 0.052/1,32
V
pins 1 & 4
0.063/1,60
0.052/1,32
0.063/1,60
0.063/1,60
0.063/1,60
0.063/1,60
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.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 139-1
Revised 08/15/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 139-2
Output Power Chokes – Toroid Styles
Recommended
Board Layout
4
H max
Y
1
1
Z
2
2
4
Z
V
Schematic
1
2
X
0.063
1,6
4
2
for mounting
stability
0.052
1,32
L max
0.120/0.180
3,05/4,57
0.052
1,32
(pin 2)
W max
Terminations:
Tin-silver over copper
Weight
DMT1 Series:
13.0 – 16.4 g
DMT2 Series:
48.7 – 56.3 g
DMT3 Series:
90.2 – 100.5 g
DMT2 Series
L
1
Part
number
DMT2-26-11L
DMT2-47-8.2L
DMT2-79-6L
DMT2-149-3.8L
DMT2-273-2.4L
DMT2-567-1.5L
DMT2-20-12L
DMT2-49-8L
DMT2-80-6.3L
DMT2-134-4.8L
DMT2-200-3.8L
DMT2-380-2.4L
DMT2-796-1.5L
min
(µH)
26
47
79
149
273
567
20
49
80
134
200
380
796
Current
DCR
SRF
rating
max
typ
(A)
(Ohms) (MHz)
11.0
0.02
9.34
8.2
0.04
6.45
6.0
0.07
3.58
3.8
0.13
4.03
2.4
0.26
2.45
1.5
0.56
1.12
12.0
8.0
6.3
4.8
3.8
2.4
1.5
0.02
0.04
0.05
0.10
0.19
0.38
0.79
11.4
6.13
4.46
2.82
2.07
1.68
0.64
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
1.6/40,6
1.6/40,6
1.6/40,6
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
1.6/40,6
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
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
Y
Z
±0.01/0,25 pins 1 & 4
0.60/15,2 0.052/1,32
0.60/15,2 0.041/1,04
0.60/15,2 0.052/1,32
0.60/15,2 0.052/1,32
0.60/15,2 0.052/1,32
0.60/15,2 0.052/1,32
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
0.058/1,47
0.046/1,17
0.041/1,04
0.052/1,32
0.052/1,32
0.052/1,32
0.052/1,32
V
pins 1 & 4
0.063/1,60
0.052/1,32
0.063/1,60
0.063/1,60
0.063/1,60
0.063/1,60
0.069/1,75
0.057/1,45
0.052/1,32
0.063/1,60
0.063/1,60
0.063/1,60
0.063/1,60
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
L
1
Part
min
number
(µH)
DMT3-35-12L
35
DMT3-77-8L
77
DMT3-138-6L
138
DMT3-257-4.9L
257
DMT3-402-3.7L
402
DMT3-695-2.4L
695
DMT3-1439-1.5L 1439
Current DCR
SRF
rating
max
typ
(A)
(Ohms) (MHz)
12.0
0.019
7.55
8.0
0.040
4.24
6.0
0.070
2.77
4.9
0.150
1.62
3.7
0.279
1.25
2.4
0.550
0.92
1.5
1.176
0.56
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
1.9/48,3
L
max
1.85/47,0
1.85/47,0
1.85/47,0
1.85/47,0
1.80/45,7
1.80/45,7
1.80/45,7
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
Y
Z
V
±0.01/0,25 ±0.01/0,25 pins 1 & 4 pins 1 & 4
1.20/30,5 0.70/17,8 0.058/1,47 0.069/1,75
1.20/30,5 0.70/17,8 0.046/1,17 0.057/1,45
1.20/30,5 0.70/17,8 0.041/1,04 0.052/1,32
1.20/30,5 0.70/17,8 0.052/1,32 0.063/1,60
1.20/30,5 0.70/17,8 0.052/1,32 0.063/1,60
1.20/30,5 0.70/17,8 0.052/1,32 0.063/1,60
1.20/30,5 0.70/17,8 0.052/1,32 0.063/1,60
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.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 139-2
Revised 08/15/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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