Chip Thin-Film RF Inductors (TRAL)

Chip Thin-Film RF Inductors Provide Small-Format Protection. Direct (TRAL) chip inductors provide reliable protection against challenging EMI problems in high frequency filtering applications. This miniature wirewound inductor features a low seated height that stands only 0.23mm above the circuit board. It protects sensitive electronic circuitry and ensures high performance operation in a wide range of compact devices that are shrinking ever smaller in physical size.

Direct (TRAL) series uses a thin-film technology for high reliability and precision tolerances to 1% or ±0.1nH. The (TRAL) thin-film inductor series is available in 0603, 0402, and 0201 sizes, in inductance values from 0.1 to 100nH, in tolerances down to 0.1nH or 1%, and with SRF (self-resonant frequency) tightly controlled.

The technology characteristics make it ideal for the latest cellphone and PDA applications in addition to wireless network and Bluetooth enabled devices.

Application of specific designs also available including different inductance values and Q specifications adjusted to frequency requirements. Customed designs and tighter tolerances are available on request. Thin Film Inductor is mounted in a surface mount package which assures mechanical stability, excellent lead coplanarity, and suitable for automatic pick and place equipment.

The (TRAL) series is lead-free and RoHS compliant. Detailed specifications, both mechanical and electrical, please contact Direct sales representative for more information. Download Complete Specification Thin-Film RF Chip Inductors (TRAL) PDF (422KB).

Features:
  1. A Photo Lithographic Single Layer Ceramic Chip.
  2. High SRF, Excellent Q, Superior Temperature Stability.
  3. Self Resonant Frequency Controlled within 10%.
  4. Stable Inductance in High Frequency Circuit.
  5. Highly Stable Design for Critical Needs.
  6. Tight Tolerance of ±1% or ±0.1nH.
Applications:
  1. Cellular Telephone, Pagers and GPS Products.
  2. VCO,TCXO Circuit and RF Transceiver Module.
  3. Wireless LAN, Bluetooth Module.
  4. Communication Appliances.
Configurations & Dimensions (Unit: mm) (TRAL)
Photo Lithographic Pattern
Photo Lithographic Pattern
Material Construction
Material Construction
(TRAL) Dimensions (Unit: mm)
(TRAL) Dimensions (Unit: mm)
Codes A B C D
TRAL01 (0201) 0.6 ± 0.05 0.3 ± 0.05 0.23 ± 0.05 0.15 ± 0.05
TRAL02 (0402) 1.0 ± 0.05 0.5 ± 0.05 0.32 ± 0.05 0.2 ± 0.10
TRAL03 (0603) 1.6 ± 0.10 0.8 ± 0.10 0.45 ± 0.10 0.3 ± 0.20
Standard Electrical Specifications (TRAL) - EIA 0201
Part No. Inductance
(nH)
Tolerance
(% or nH)
Q
(min)
DCR
(Ω)(max)
IDC
(mA)(max)
SRF
(GHz)(min)
TRAL01*TR0N1 0.1 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.20 400 9
TRAL01*TR0N2 0.2 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.20 400 9
TRAL01*TR0N3 0.3 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.20 400 9
TRAL01*TR0N4 0.4 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.25 350 9
TRAL01*TR0N5 0.5 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.25 350 9
TRAL01*TR0N6 0.6 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.25 350 9
TRAL01*TR0N7 0.7 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.30 300 9
TRAL01*TR0N8 0.8 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.30 300 9
TRAL01*TR0N9 0.9 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.30 300 9
TRAL01*TR1N0 1.0 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.30 300 9
TRAL01*TR1N1 1.1 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.35 300 9
TRAL01*TR1N2 1.2 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.35 300 9
TRAL01*TR1N3 1.3 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.45 250 9
TRAL01*TR1N4 1.4 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.45 250 9
TRAL01*TR1N5 1.5 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.45 250 9
TRAL01*TR1N6 1.6 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.55 200 9
TRAL01*TR1N7 1.7 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.55 200 9
TRAL01*TR1N8 1.8 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.55 200 9
TRAL01*TR1N9 1.9 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.55 200 9
TRAL01*TR2N0 2.0 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.70 200 8
TRAL01*TR2N1 2.1 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.70 200 8
TRAL01*TR2N2 2.2 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.70 200 8
TRAL01*TR2N3 2.3 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.80 150 8
TRAL01*TR2N4 2.4 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.80 150 8
TRAL01*TR2N5 2.5 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.80 150 8
TRAL01*TR2N6 2.6 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.80 150 8
TRAL01*TR2N7 2.7 ± 0.1, 0.2, 0.3nH 8 / 500MHz 0.80 150 8
TRAL01*TR2N8 2.8 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR2N9 2.9 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR3N0 3.0 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR3N1 3.1 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR3N2 3.2 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR3N3 3.3 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.00 150 6
TRAL01*TR3N4 3.4 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR3N5 3.5 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR3N6 3.6 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR3N7 3.7 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR3N8 3.8 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR3N9 3.9 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR4N0 4.0 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.20 150 6
TRAL01*TR4N4 4.4 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.30 140 6
TRAL01*TR4N7 4.7 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.40 130 6
TRAL01*TR4N9 4.9 ± 0.1, 0.2, 0.3nH 8 / 500MHz 1.60 130 6
TRAL01*TR5N6 5.6 ± 2,± 5% 8 / 500MHz 1.80 130 4
TRAL01*TR6N1 6.1 ± 2, ± 5% 8 / 500MHz 2.00 120 4
TRAL01*TR6N8 6.8 ± 2,± 5% 8 / 500MHz 2.30 110 4
TRAL01*TR7N4 7.4 ± 2, ± 5% 8 / 500MHz 2.80 110 4
TRAL01*TR8N2 8.2 ± 2,± 5% 8 / 500MHz 3.00 110 3
TRAL01*TR9N1 9.1 ± 2, ± 5% 8 / 500MHz 3.25 100 3
TRAL01*TR9N2 9.2 ± 2,± 5% 8 / 500MHz 3.25 100 3
TRAL01*TR10N 10 ± 2, ± 5% 8 / 500MHz 3.50 80 2
Direct is capable of manufacturing the optional spec based on customer's requirement.
Standard Electrical Specifications (TRAL) - EIA 0402
Part No. Inductance
(nH)
Tolerance
(% or nH)
Q
(min)
DCR
(Ω)(max)
IDC
(mA)(max)
SRF
(GHz)(min)
TRAL02*TR0N2 0.2 0.1/0.2/0.3(nH) 13 / 500MHz 0.10 800 14
TRAL02*TR0N4 0.4 0.1/0.2/0.3(nH) 13 / 500MHz 0.10 800 14
TRAL02*TR0N8 0.8 0.1/0.2/0.3(nH) 13 / 500MHz 0.15 700 14
TRAL02*TR1N0 1.0 0.1/0.2/0.3(nH) 13 / 500MHz 0.15 700 12
TRAL02*TR1N2 1.2 0.1/0.2/0.3(nH) 13 / 500MHz 0.15 700 12
TRAL02*TR1N5 1.5 0.1/0.2/0.3(nH) 13 / 500MHz 0.25 700 10
TRAL02*TR1N6 1.6 0.1/0.2/0.3(nH) 13 / 500MHz 0.25 560 10
TRAL02*TR1N8 1.8 0.1/0.2/0.3(nH) 13 / 500MHz 0.25 560 10
TRAL02*TR2N0 2.0 0.1/0.2/0.3(nH) 13 / 500MHz 0.35 560 8
TRAL02*TR2N2 2.2 0.1/0.2/0.3(nH) 13 / 500MHz 0.35 440 8
TRAL02*TR2N7 2.7 0.1/0.2/0.3(nH) 13 / 500MHz 0.35 440 8
TRAL02*TR3N1 3.1 0.1/0.2/0.3(nH) 13 / 500MHz 0.45 380 6
TRAL02*TR3N3 3.3 0.1/0.2/0.3(nH) 13 / 500MHz 0.45 380 6
TRAL02*TR3N6 3.6 0.1/0.2/0.3(nH) 13 / 500MHz 0.55 380 6
TRAL02*TR3N9 3.9 0.1/0.2/0.3(nH) 13 / 500MHz 0.55 340 6
TRAL02*TR4N7 4.7 0.1/0.2/0.3(nH) 13 / 500MHz 0.65 320 6
TRAL02*TR5N6 5.6 0.1/0.2/0.3(nH) 13 / 500MHz 0.85 280 6
TRAL02*TR5N9 5.9 0.1/0.2/0.3(nH) 13 / 500MHz 0.85 280 6
TRAL02*TR6N8 6.8 0.1/0.2/0.3(nH) 13 / 500MHz 1.05 260 6
TRAL02*TR7N2 7.2 0.1/0.2/0.3(nH) 13 / 500MHz 1.05 260 6
TRAL02*TR8N0 8.0 0.1/0.2/0.3(nH) 13 / 500MHz 1.25 220 5.5
TRAL02*TR8N2 8.2 0.1/0.2/0.3(nH) 13 / 500MHz 1.25 220 5.5
TRAL02*TR9N1 9.1 0.1/0.2/0.3(nH) 13 / 500MHz 1.25 220 5.5
TRAL02*TR10N 10 1/2/3/5(%) 13 / 500MHz 1.35 200 4.5
TRAL02*TR12N 12 1/2/3/5(%) 13 / 500MHz 1.55 180 3.7
TRAL02*TR13N8 13.8 1/2/3/5(%) 13 / 500MHz 1.75 180 3.7
TRAL02*TR15N 15 1/2/3/5(%) 13 / 500MHz 1.75 130 3.3
TRAL02*TR17N 17 1/2/3/5(%) 13 / 500MHz 1.95 100 3.1
TRAL02*TR18N 18 1/2/3/5(%) 13 / 500MHz 2.15 100 3.1
TRAL02*TR20N8 20.8 1/2/3/5(%) 13 / 500MHz 2.55 90 2.8
TRAL02*TR22N 22 1/2/3/5(%) 13 / 500MHz 2.65 90 2.8
TRAL02*TR27N 27 1/2/3/5(%) 13 / 500MHz 3.25 75 2.5
TRAL02*TR33N 33 1/2/3/5(%) 13 / 500MHz 3.75 75 2.5
Direct is capable of manufacturing the optional spec based on customer's requirement.
Standard Electrical Specifications (TRAL) - EIA 0603
Part No. Inductance
(nH)
Tolerance
(% or nH)
Q
(min)
DCR
(Ω)(max)
IDC
(mA)(max)
SRF
(GHz)(min)
TRAL03*TR1N0 1.0 0.1/0.2/0.3(nH) 15 / 300MHz 0.35 800 13
TRAL03*TR1N2 1.2 0.1/0.2/0.3(nH) 15 / 300MHz 0.35 800 13
TRAL03*TR1N5 1.5 0.1/0.2/0.3(nH) 15 / 300MHz 0.35 800 10
TRAL03*TR1N8 1.8 0.1/0.2/0.3(nH) 15 / 300MHz 0.35 300 10
TRAL03*TR2N2 2.2 0.1/0.2/0.3(nH) 15 / 300MHz 0.35 300 8
TRAL03*TR2N7 2.7 0.1/0.2/0.3(nH) 15 / 300MHz 0.45 300 6
TRAL03*TR3N3 3.3 0.1/0.2/0.3(nH) 15 / 300MHz 0.45 300 6
TRAL03*TR3N9 3.9 0.1/0.2/0.3(nH) 15 / 300MHz 0.45 300 6
TRAL03*TR4N7 4.7 0.1/0.2/0.3(nH) 15 / 300MHz 0.55 300 5
TRAL03*TR5N6 5.6 0.1/0.2/0.3(nH) 15 / 300MHz 0.65 300 5
TRAL03*TR6N8 6.8 0.1/0.2/0.3(nH) 15 / 300MHz 0.75 300 5
TRAL03*TR8N2 8.2 0.1/0.2/0.3(nH) 15 / 300MHz 0.95 300 4
TRAL03*TR10N 10 1/2/3/5(%) 15 / 300MHz 0.95 300 4
TRAL03*TR12N 12 1/2/3/5(%) 15 / 300MHz 1.05 300 3
TRAL03*TR15N 15 1/2/3/5(%) 15 / 300MHz 1.35 300 3
TRAL03*TR18N 18 1/2/3/5(%) 15 / 300MHz 1.65 300 2
TRAL03*TR22N 22 1/2/3/5(%) 15 / 300MHz 1.95 250 2
TRAL03*TR27N 27 1/2/3/5(%) 15 / 300MHz 2.35 250 2
TRAL03*TR33N 33 1/2/3/5(%) 15 / 300MHz 2.75 250 1.5
TRAL03*TR39N 39 1/2/3/5(%) 15 / 300MHz 3.00 200 1.5
TRAL03*TR47N 47 1/2/3/5(%) 15 / 300MHz 3.00 200 1.5
TRAL03*TR56N 56 1/2/3/5(%) 15 / 300MHz 5.00 150 1
TRAL03*TR68N 68 1/2/3/5(%) 15 / 300MHz 5.00 150 1
TRAL03*TRR10 100 1/2/3/5(%) 15 / 300MHz 7.50 100 1
Direct is capable of manufacturing the optional spec based on customer's requirement.
Reel & Packaging Quantity (Unit: mm) (TRAL)
(TRAL) Reel Dimensions (Unit: mm)
(TRAL) Reel Dimensions (Unit: mm)
Codes ΦA ΦB ΦC W T Paper Tape (PCS)
TRAL01 178.0 ± 1.0 60 ± 1.0 13.5 ± 0.7 9.5 ± 1.0 11.5 ± 1.0 10,000
TRAL02 178.0 ± 1.0 60 ± 1.0 13.5 ± 0.7 9.5 ± 1.0 11.5 ± 1.0 10,000
TRAL03 178.0 ± 1.0 60 + 1.0 13.5 ± 0.7 9.5 ± 1.0 11.5 ± 1.0 5,000

Paper Tape (Unit: mm) (TRAL)
Paper Tape Specifications (Unit: mm)
Paper Tape Specifications (Unit: mm)
Codes A±0.05 B±0.05 W±0.10 E±0.05 F±0.05 P0±0.10 P1 P2±0.05 ΦD0 T
TRAL01 0.40 0.70 8.00 1.75 3.5 4.00 2.00±0.05 2.00 1.55±0.03 0.42±0.02
TRAL02 0.70 1.16 8.00 1.75 3.5 4.00 2.00±0.05 2.00 1.55±0.05 0.40±0.03
TRAL03 1.10 1.90 8.00 1.75 3.5 4.00 4.00±0.10 2.00 1.55±0.05 0.60±0.03
Environmental Characteristics (TRAL)
Item Specification Test Method
Bending Test As SPEC. JIS-C-5202-6.1.4
Bending Amplitude 3mm for 10 seconds
Dielectric Withstand Voltage >100V MIL-STD-202F Method 301
Apply 100VA (rms) for 1minute.
Insulation Resistance >1000MΩ MIL-STD-202F Method 302
Apply 100VDC for 1minute.
Resistance to Soldering Heat ΔL≤10% MIL-STD-202F Method 210E
260±5°C, 10 seconds
High Temperature Exposure ΔL≤10% JIS-C-5202-7.2
85±2°C, 1000 +48/-0 hours
Moisture Resistance ΔL≤10% MIL-STD-202F Method 103B
40±°C, 90~95%RH, 1000 +48/-0 hours
Low Temperature Storage ΔL≤10% JIS-C-5202-7.1
-40±3°C, 1000 +48/-0 hours
Temperature Cycle ΔL≤10% JIS-C-5202-7.4
-40/RT/85/RT, 10 cycles
Solderability 95% min coverage MIL-STD-202F Method 208H
245±5°C,for 3 seconds
Order Codes (TRAL)
TRAL 02 G TR 10N
Part Number
TRAL01
TRAL02
TRAL03
Dimensions (L×W)
(mm)
01 0.60×0.30mm EIA0201
02 1.00×0.50mm EIA0402
03 1.60×0.80mm EIA0603
Inductance Tolerance
(%) or (nH)
J 5%
H ±3%
G ±2%
F ±1%
S ±0.3nH
C ±0.2nH
B ±0.1nH
Package
TR Taping Reel
Inductance
1N0 1.0nH
10N 10nH
20N8 20.8nH
R10 100nH