Air Core RF SMD Inductors

RF SMD Inductors Flat Top Air Core

AM

Tokenchina's state-of-the-art equipment allows our engineers to design and manufacture the highest quality air core inductor coils using precise specifications. Air core inductors experience no core loss. The inductor is an excellent solution to your switch mode magnetic need when high frequency and high linearity is desired.


The Advantages of an Air Core Inductor (coils)

Its inductance is unaffected by the current it carries. This contrasts with the situation with coils using ferromagnetic cores whose inductance tends to reach a peak at moderate field strengths before dropping towards zero as saturation approaches. Sometimes non-linearity in the magnetization curve can be tolerated; for example in switching converters. In circuits such as audio cross over networks in Hi-Fi speaker systems you must avoid distortion; then you need an air coil. Most radio transmitters rely on air coils to prevent the production of harmonics.


Air coils are also free of the 'iron losses' which affect ferromagnetic cores. As frequency is increased this advantage becomes progressively more important. You obtain better Q-factor, greater efficiency, greater power handling, and less distortion.


Lastly, air coils can be designed to perform at frequencies as high as 1 Ghz. Most ferromagnetic cores tend to be rather lossy above 100 MHz.


The Flat Top Air Core AM Inductors are lead-free and RoHS compliant. Please contact us for details with your specific needs.


Features

  • High frequency.
  • Excellent SRFs and high Q.
  • Good constitutive property and easy to operate.

Applications

  • Intercom, CATV.
  • Pager, Cordless phone & High Frequency Communication Products.

SMD Air Core Dimensions (unit: mm) - 0603, 0805, 1008

SMD Inductors Flat Top Air Core - AM Series
Type A (max) B (max) C ± 0.2
TRAM0603 1.80 2.00 2.00
TRAM0805 1.80 2.10 2.85
TRAM1008 1.90 2.20 3.20

SMD Air Core Dimensions (unit: mm) - 2215, 4015, 132

SMD Inductors Flat Top Air Core - AM Series
Type A B C D E
TRAM2215 2.2 ± 0.3 1.4 ± 0.2 1.4 ± 0.2 1.8 ± 0.3 0.9 ± 0.3
TRAM4015 4.0 ± 0.3 1.4 ± 0.2 1.4 ± 0.2 3.5 ± 0.3 0.9 ± 0.3
TRAM132 9.0(max) 4.4 ± 0.3 4.6 ± 0.4 8.0 ± 0.5 1.3 ± 0.4

SMD Air Core Dimensions (unit: mm) - 3730, 7030

SMD Inductors Flat Top Air Core - AM Series
Type A ± 0.3 B ± 0.2 C ± 0.2 D ± 0.3 E ± 0.2
TRAM3730 3.30 2.60 2.70 2.90 0.70
TRAM7030 6.30 3.60 3.70 5.80 0.70

SMD Air Core Dimensions (unit: mm) - 1812

SMD Inductors Flat Top Air Core - AM Series
Type A ± 0.3 B ± 0.2 C ± 0.2 D ± 0.4 E ± 0.3
TRAM1812 4.90 3.50 3.50 4.30 1.00

Electrical Characteristics - TRAM0603 SMD Air Core

Part Number Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(MHz)(min)
DCR
(mΩ)(max)
IDC
(mA)(max)
TRAM0603 - 3N9K 3.9 80 300 >3000 3.0 950
TRAM0603 - 4N7K 4.7 80 300 >3000 3.6 900
TRAM0603 - 5N6K 5.6 80 300 >3000 3.8 950
TRAM0603 - 6N8K 6.8 80 300 >3000 4.5 900
TRAM0603 - 8N2K 8.2 80 300 >3000 5.3 840
TRAM0603 - 10NK 10.0 70 300 >3000 6.9 600
TRAM0603 - 12NK 12.0 70 300 >3000 8.3 600
TRAM0603 - 15NK 15.0 70 300 2500 11.5 500
TRAM0603 - 18NK 18.0 70 300 2500 12.8 500
TRAM0603 - 22NK 22.0 70 300 2400 11.3 550
TRAM0603 - 27NK 27.0 70 300 1600 17.0 500
TRAM0603 - 33NK 33.0 70 300 1600 26.9 320
TRAM0603 - 39NK 39.0 70 300 1500 30.7 320
TRAM0603 - 47NK 47.0 70 300 1500 34.5 320
TRAM0603 - 56NK 56.0 70 300 1300 38.4 320

Electrical Characteristics - TRAM0805 SMD Air Core

Part Number Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(MHz)(min)
DCR
(mΩ)(max)
IDC
(mA)(max)
TRAM0805 - 3N9K 3.9 80 300 >3000 2.6 1200
TRAM0805 - 4N7K 4.7 80 300 >3000 3.6 900
TRAM0805 - 5N6K 5.6 80 300 >3000 3.7 950
TRAM0805 - 6N8K 6.8 80 300 >3000 4.5 900
TRAM0805 - 8N2K 8.2 80 300 >3000 5.3 840
TRAM0805 - 10NK 10.0 70 300 >3000 5.4 900
TRAM0805 - 12NK 12.0 70 300 >3000 6.3 900
TRAM0805 - 15NK 15.0 70 300 2500 7.2 900
TRAM0805 - 18NK 18.0 70 300 2500 12.5 500
TRAM0805 - 22NK 22.0 70 300 2400 12.9 550
TRAM0805 - 27NK 27.0 70 300 1600 14.5 550
TRAM0805 - 33NK 33.0 70 300 1600 18.7 500
TRAM0805 - 39NK 39.0 70 300 1500 25.7 380
TRAM0805 - 47NK 47.0 70 300 1500 34.5 320
TRAM0805 - 56NK 56.0 70 300 1300 38.4 320
TRAM0805 - 68NK 68.0 70 300 1300 42.2 320

Electrical Characteristics - TRAM1008 SMD Air Core

Part Number Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(MHz)(min)
DCR
(mΩ)(max)
IDC
(mA)(max)
TRAM1008 - 6N8K 6.8 80 300 >3000 4.0 1200
TRAM1008 - 8N2K 8.2 80 300 >3000 5.0 950
TRAM1008 - 10NK 10.0 70 300 >3000 6.0 950
TRAM1008 - 12NK 12.0 70 300 >3000 6.5 900
TRAM1008 - 15NK 15.0 70 300 2500 7.3 900
TRAM1008 - 18NK 18.0 70 300 2500 9.6 840
TRAM1008 - 22NK 22.0 70 300 2400 10.8 840
TRAM1008 - 27NK 27.0 70 300 1600 13.9 600
TRAM1008 - 33NK 33.0 70 300 1600 19.5 500
TRAM1008 - 39NK 39.0 70 300 1500 21.6 500
TRAM1008 - 47NK 47.0 70 300 1500 25.2 470
TRAM1008 - 56NK 56.0 70 300 1300 27.5 470
TRAM1008 - 68NK 68.0 70 300 1300 37.1 380
TRAM1008 - 82NK 82.0 70 300 1000 51.5 320
TRAM1008 - R10K 100.0 70 300 1000 55.5 320
TRAM1008 - R12K 120.0 70 300 950 63.4 320

Electrical Characteristics - TRAM2215 SMD Air Core

Part Number Turns Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM2215 - 02 2 1.65 ± 10% 100 800 >3.0
TRAM2215 - 03 3 2.55 ± 10% 100 800 >3.0
TRAM2215 - 04 4 3.85 ± 10% 100 800 >3.0
TRAM2215 - 05 5 5.45 ± 5% 100 800 >3.0

Electrical Characteristics - TRAM4015 SMD Air Core

Part Number Turns Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM4015 - 06 6 5.60 ± 5% 100 800 >3.0
TRAM4015 - 07 7 7.15 ± 5% 100 800 >3.0
TRAM4015 - 08 8 8.80 ± 5% 100 800 >3.0
TRAM4015 - 09 9 9.85 ± 5% 100 800 >3.0
TRAM4015 - 10 10 12.55 ± 5% 100 800 >3.0

Electrical Characteristics - TRAM132 SMD Air Core

Part Number Turns Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM132 - 09 9 90 ± 5% 100 50 >1.0
TRAM132 - 10 10 111 ± 5% 100 50 >1.0
TRAM132 - 11 11 130 ± 5% 100 50 >0.9
TRAM132 - 12 12 169 ± 5% 100 50 >0.8
TRAM132 - 13 13 206 ± 5% 100 50 >0.7
TRAM132 - 14 14 222 ± 5% 100 50 >0.6
TRAM132 - 15 15 246 ± 5% 100 50 >0.6
TRAM132 - 16 16 307 ± 5% 100 50 >0.5
TRAM132 - 17 17 380 ± 5% 100 50 >0.5
TRAM132 - 18 18 422 ± 5% 100 50 >0.4
TRAM132 - 19 19 491 ± 5% 100 50 >0.4
TRAM132 - 20 20 538 ± 5% 100 50 >0.4

Electrical Characteristics - TRAM3730 SMD Air Core

Part Number Turns Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM3730 - A01T 1 2.5 ± 10% 145 150 >3.0
TRAM3730 - A02T 2 5.0 ± 10% 140 150 >3.0
TRAM3730 - A03T 3 8.0 ± 10% 140 150 >3.0
TRAM3730 - A04T 4 12.5 ± 5% 137 150 >3.0
TRAM3730 - A05T 5 18.5 ± 5% 132 150 >2.5

Electrical Characteristics - TRAM7030 SMD Air Core

Part Number Turns Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM7030 - B06T 6 17.5 ± 5% 100 150 >2.2
TRAM7030 - B07T 7 22.0 ± 5% 100 150 >2.0
TRAM7030 - B08T 8 28.0 ± 5% 100 150 >1.8
TRAM7030 - B09T 9 35.5 ± 5% 100 150 >1.2
TRAM7030 - B10T 10 43.5 ± 5% 100 150 >1.0

Electrical Characteristics - TRAM1812 SMD Air Core

Part Number Inductance
(L)(nH)
Q
(min)
Test Freq.
(MHz)
SRF
(GHz)(min)
TRAM1812 - 22NK 22 100 150 3.20
TRAM1812 - 27NK 27 100 150 2.70
TRAM1812 - 33NK 33 100 150 2.50
TRAM1812 - 39NJ 39 100 150 2.10
TRAM1812 - 47NJ 47 100 150 2.10
TRAM1812 - 56NJ 56 100 150 1.50
TRAM1812 - 68NJ 68 100 150 1.50
TRAM1812 - 82NJ 82 100 150 1.30
TRAM1812 - R10J 100 100 150 1.20
TRAM1812 - R12J 120 100 150 1.10

How to Order - Air Core RF Inductors - TRAM0603, TRAM0805, TRAM1008

TRAM 1008 - 6N8 K
Type
SMD Flat Top Air Core Inductors
Size
0603 TRAM0603
0805 TRAM0805
1008 TRAM1008
Inductance
6N8 6.8nH
10N 10.0nH
R10 100.00nH
Tolerance
K 10%
M 20%

How to Order - Air Core RF Inductors - TRAM2215, TRAM4015, TRAM132

TRAM 2215 - 02
Type
SMD Flat Top Air Core Inductors
Size
2215 TRAM2215
4015 TRAM4015
132 TRAM132
Turns

How to Order - Air Core RF Inductors - TRAM3730, TRAM7030

TRAM 3730 - A01T
Type
SMD Flat Top Air Core Inductors
Size
3730 TRAM3730
7030 TRAM7030
Turns

How to Order - Air Core RF Inductors - TRAM1812

TRAM 1812 - 22N K
Type
SMD Inductors Flat Top Air Core
Size
1812 TRAM1812
Inductance
22N 22nH
R10 100nH
Tolerance
J 5%
K 10%

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RF SMD Inductors Flat Top Air Core - AM Series