FDA1055 Series
IRON POWDER SURFACE MOUNT FIXED INDUCTOR
TYPE FDA1055
Inductance Range: 0.56 - 4.7μH
Frequency Range: 0.1 - 5MHz
Description
The TOKO FDA1055 Series is a compact, high-current surface
mount fixed inductor with a maximum DC current rating of
22.7 Amps at 0.56μH. Manufactured with a proprietary iron
powder composition and process, the product is specifically
designed for high current, space constrained DC-DC converter
applications in portable computing, point-of-load modules, and
computer peripherals.
Dimensions & Recommended Patterns:
10.8
5.5 Max.
2.5
NC
A
Features
• Compact size: 11.9mm x 11.1mm
• Low profile: 5.5mm maximum
• High DC current: 22.7A max. at 0.56μH
• Magnetically shielded
1.5
C
• Low DC resistance
• Low audible noise
• Reflow solderable
• Packaged on 500 piece reels
• Lead-free terminations
NC
3
TOKO Part No.
A
B
C
FDA1055-R56M=P3
FDA1055-1R2M=P3
FDA1055-1R5M=P3
FDA1055-2R2M=P3
FDA1055-3R3M=P3
FDA1055-4R7M=P3
11.6
11.6
11.6
11.4
11.3
11.3
1.9
1.9
1.9
1.7
1.4
1.4
6.5
6.5
6.5
6.4
6.4
6.4
8.3
4.3
Unit: mm
Tolerance: ±0.3mm
STANDARD PARTS SELECTION GUIDE
(1) Inductance is measured by LCR-meter 4284A (Agilent) or equivalent.
(2) DC resistance is measured by Digital Multimeter 34420A (Agilent) or equivalent.
(3) Maximum allowable DC current is that which causes a 20% inductance reduction from the initial value,
or coil temperature to rise by 40°C, whichever is smaller. (Reference ambient temperature 20°C).
TYPE FDA1055
Inductance Tolerance Test
Inductance
Temperature
Rise Current
Absolute
Max.
TOKO
Part
Number
DC
(µH) (1)
(%)
Freq. Resistance Decrease Current
(kHz)
[-20%] (A) max. (3) [+40°C] (A) max. (3) Voltage (V)
( mΩ ) max. (2)
0.56
1.2
1.5
2.2
3.3
4.7
±20
±20
±20
±20
±20
±20
100
100
100
100
100
100
27.7
20.0
18.0
15.5
11.7
9.9
22.7
17.9
16.6
13.6
11.2
9.1
30
30
30
30
30
30
1.8
2.9
3.5
4.8
7.3
FDA1055-R56M=P3
FDA1055-1R2M=P3
FDA1055-1R5M=P3
FDA1055-2R2M=P3
FDA1055-3R3M=P3
FDA1055-4R7M=P3
11.0
Note: =P3 is added to each part number to indicate tape and reel packaging.
March 2006
© 2006 TOKO America, Inc.
All Rights Reserved
Printed in USA
1
CF-286-FDA1055
R-LOG0306A