Low EMI High-Frequency Coils (TCTC)

High Current Toroidal Inductors (TCTC)

Toroidal inductors and transformers are electronic components with the high performers among inductors, typically consisting of a circular ring-shaped magnetic core of iron powder, ferrite, or other material around which wire is coiled to make an inductor. Their windings cool better because of the proportionally larger surface area. Toroidal coils with a round core cross section are better performers than a rectangular cross section.

Direct's (TCTC) high current Toroidal Series manufactured by Low loss powdered iron cores offer the smallest size by volume and weight, and lower electromagnetic interference (EMI). Direct toroidal can have higher Q factors and higher inductance than similarly constructed solenoid coils. This is due largely to the smaller number of turns required when the core provides a closed magnetic path. The magnetic flux in a toroid is largely confined to the core, preventing its energy from being absorbed by nearby objects, making toroidal cores essentially self-shielding. The (TCTC) series is suitable for a broad range of applications, such as high-frequency coils and transformers.

Full line products meet RoHS compliant. Direct will also produce devices outside these specifications to meet specific customer requirements, please contact our sales for more information.

Download complete specification Low EMI High-Frequency Coils (TCTC) PDF.

Applications :
  1. Notebook, Inkjet Printer,Copying Machine,
  2. Copying Machine, Display Monitor, ADSL Modem,
  3. Color TV, Video Camera, Air Conditioner, Refrigerator,
  4. Laundry Machine, Microwave Oven and Car Electronics, etc..
Features :
  1. Low EMI.
  2. Low Cost.
  3. High Current.
Configurations & Dimensions (Unit: mm) (TCTC)
Type: HA A Max B Max C D
TCTC Appearance size TCTC5026 -HA 15.5 8.0 6±1 5±1
TCTC5026B -HA 15.5 9.5 6±1 5±1
TCTC5052 -HA 15.5 8.0 6±1 5±1
TCTC5052B -HA 15.5 9.5 6±1 5±1
TCTC5018B -HA 15.5 9.5 6±1 5±1
TCTC5018 -HA 15.5 8.0 6±1 5±1
TCTC6052 -HA 20.0 10.0 6±1 5±1
TCTC6018 -HA 20.0 10.0 6±1 5±1
Type: HB A Max B Max C D
TCTC Appearance size TCTC5026 -HB 18.0 10.0 6±1 15±1
TCTC5026B -HB 18.0 11.5 6±1 15±1
TCTC5052 -HB 18.0 10.0 6±1 15±1
TCTC5052B -HB 18.0 11.5 6±1 15±1
TCTC5018B -HB 18.0 11.5 6±1 15±1
TCTC5018 -HB 18.0 10.0 6±1 15±1
TCTC6052 -HB 22.0max 12.0max 6±1 17±1
TCTC6018 -HB 22.0max 12.0max 6±1 17±1
Type: HC A Max B Max C D
TCTC Appearance size TCTC5026 -HC 15.5 8.0 6±1 14±1
TCTC5026B -HC 15.5 9.5 6±1 14±1
TCTC5052 -HC 15.5 8.0 6±1 14±1
TCTC5052B -HC 15.5 9.5 6±1 14±1
TCTC5018B -HC 15.5 9.5 6±1 141
TCTC6052 -HC 20.0 10.0 6±1 16±1
TCTC6018 -HC 20.0 10.0 6±1 16±1
Type: V A Max B Max C D
TCTC Appearance size TCTC5026 -V 9.0 18.0 6±1 7.0±1
TCTC5026B -V 10.0 18.0 6±1 8.5±1
TCTC5052 -V 9.0 18.0 6±1 7±1
TCTC5052B -V 10.0 18.0 6±1 8.5±1
TCTC5018B -V 10.0 18.0 6±1 8.5±1
TCTC6052 -V 11.0 21.0 6±1 9.5REF
TCTC6018 -V 11.0 21.0 6±1 9.5REF
In addition, a variety of common mode magnetic coil inductors can be supplied according to customer requirements
TCTC Appearance size TCTC Appearance size TCTC Appearance size TCTC Appearance size
Note: Design as Customer's Requested Specifications.
Electrical Characteristics (TCTC)
Indctance
(µH)
5026 5026B 5052 5052B 5018 5018B 6052 6018
DCR IDC DCR IDC DCR IDC DCR IDC DCR IDC DCR IDC DCR IDC DCR IDC
1.0(1R0M) 6.0 15/0.8 5.0 15/0.8 6.0 15/0.8 5.0 15/0.8 6.0 15/0.8 5.0 15/0.8 4.0 20/0.8 4.0 20/0.8
1.2(1R2M) 6.0 15/1.0 5.0 15/1.0 6.0 15/1.0 5.0 15/1.0 6.0 15/1.0 5.0 15/1.0 4.0 20/1.0 4.0 20/1.0
1.5(1R5M) 6.0 12/1.2 6.0 15/1.2 6.0 12/1.2 6.0 15/1.2 6.0 15/1.2 6.0 15/1.2 4.0 20/1.2 4.0 20/1.2
1.8(1R8M) 7.0 12/1.5 6.0 12/1.5 7.0 12/1.5 6.0 12/1.5 7.0 12/1.5 6.0 12/1.5 4.0 15/1.5 4.0 15/1.5
2.0(2R0M) 7.0 11/1.6 6.0 12/1.6 7.0 11/1.6 6.0 12/1.6 7.0 12/1.6 6.0 12/1.6 4.0 15/1.6 4.0 15/1.6
2.2(2R2M) 7.0 11/1.7 7.0 12/1.7 7.0 11/1.7 7.0 12/1.7 7.0 12/1.7 7.0 12/1.7 4.0 15/1.7 4.0 15/1.7
2.5(2R5M) 8.0 10/2.0 7.0 10/2.0 8.0 10/2.0 7.0 10/2.0 8.0 10/2.0 7.0 10/2.0 5.0 15/2.0 5.0 15/2.0
2.7(2R7M) 8.0 10/2.2 7.0 10/2.2 8.0 10/2.2 7.0 10/2.2 8.0 10/2.2 7.0 10/2.2 5.0 12/2.2 5.0 12/2.2
3.0(3R0M) 8.0 9/2.4 7.0 10/2.4 8.0 9/2.4 7.0 10/2.4 8.0 10/2.4 7.0 10/2.4 5.0 12/2.4 5.0 12/2.4
3.3(3R0M) 8.0 9/2.7 7.0 9/2.7 8.0 9/2.7 7.0 9/2.7 8.0 9/2.7 7.0 9/2.7 5.0 12/2.7 5.0 12/2.7
3.5(3R5M) 9.0 8/2.8 8.0 9/2.8 9.0 8/2.8 8.0 9/2.8 9.0 9/2.8 8.0 9/2.8 5.0 12/2.8 5.0 12/2.8
3.9(3R9M) 9.0 8/3.0 8.0 9/3.3 9.0 8/3.0 8.0 9/3.3 9.0 9/3.3 8.0 9/3.3 5.0 10/3.0 5.0 10/3.0
4.0(4R0M) 9.0 7/3.2 8.0 8/3.2 9.0 7/3.2 8.0 8/3.2 9.0 8/3.2 8.0 8/3.2 5.0 10/3.2 5.0 10/3.2
4.5(4R5M) 9.0 7/3.6 9.0 8/3.6 9.0 7/3.6 9.0 8/3.6 9.0 8/3.6 9.0 8/3.6 5.0 10/3.6 5.0 10/3.6
4.7(4R7M) 10.0 6/3.8 9.0 8/3.8 10.0 6/3.8 9.0 8/3.8 10.0 8/3.8 9.0 8/3.8 6.0 9/3.8 6.0 9/3.8
5.0(5R0M) 10.0 6/4.0 9.0 7/4.0 10.0 6/4.0 9.0 7/4.0 10.0 7/4.0 9.0 7/4.0 6.0 9/4.0 6.0 9/4.0
6.0(6R0M) 10.0 5/4.8 9.0 7/4.8 10.0 5/4.8 9.0 7/4.8 10.0 7/4.8 9.0 7/4.8 6.0 8/4.8 6.0 8/4.8
6.5(6R5M) 11.0 5/5.0 9.0 6/5.2 11.0 5/5.0 9.0 6/5.2 11.0 6/5.2 9.0 6/5.2 6.0 8/5.2 6.0 8/5.2
7.0(7R0M) 11.0 4/5.6 10.0 6/5.6 11.0 4/5.6 10.0 6/5.6 11.0 6/5.6 10.0 6/5.6 6.0 7/5.6 6.0 7/5.6
7.5(7R5M) 11.0 4/6.1 10.0 5/6.1 11.0 4/6.1 10.0 5/6.1 11.0 5/6.1 10.0 5/6.1 6.0 7/6.1 6.0 7/6.1
8.0(8R0M) 12.0 3/6.4 10.0 5/6.4 12.0 3/6.4 10.0 5/6.4 12.0 5/6.4 10.0 5/6.4 7.0 7/6.4 7.0 7/6.4
8.5(8R5M) 12.0 3/6.8 11.0 4/6.8 12.0 3/6.8 11.0 4/6.8 12.0 4/6.8 11.0 4/6.8 7.0 6/6.8 7.0 6/6.8
9.0(9R0M) 12.0 3/7.2 11.0 4/7.2 12.0 3/7.2 11.0 4/7.2 12.0 4/7.2 11.0 4/7.2 7.0 6/7.2 7.0 6/7.2
9.5(9R5M) 12.0 2/7.6 12.0 3/7.6 12.0 2/7.6 12.0 3/7.6 12.0 3/7.6 12.0 3/7.6 7.0 6/7.6 7.0 6/7.6
10.0(100M) 12.0 2/8.0 12.0 3/8.0 12.0 2/8.0 12.0 3/8.0 12.0 3/8.0 12.0 3/8.0 7.0 6/8.0 7.0 6/8.0

General Material Characteristics (TCTC)
Materials Initial Permeability Permeability with DC bias Hdc=50 oersteds @ 10KHz Color Code
-2 10 10.0 (100%) Red/Clear
-8 35 31.9 (91%) Yellow/Red
-14 14 14.0 (100%) Black/Red
-18 55 40.7 (74%) Green/Red
-19 55 40.7 (74%) Red/Green
-26 75 38.3 (51%) Yellow/White
-30 22 20.0 (91%) Green/Gray
-34 33 27.7 (84%) Gray/Blue
-35 33 27.7 (84%) Yellow/Gray
-40 60 37.2 (62%) Green/Yellow
-45 100 46.0 (46%) Black/Black
-52 75 44.3 (59%) Green/Blue
Order Codes (TCTC)
TCTC 5026 HA - 45 1R0 - K
  
Part Number
TCTC
Size Code
5026 15.5×8.0
5026B 15.5×9.5
5052 15.5×8.0
5052B 15.5×9.5
5018 15.5×8.0
5018B 15.5×9.5
6018 20.0×10.0
6052 20.0×10.0
Pattern TYPE
HA
HB
HC
V
 
Materials
45
Inductance
1R0 1.0µH
100 10.0µH
 
Tolerance
J 5%
K 10%
L 15%
M 20%
N 30%
Y min