D412F Series
SURFACE MOUNT FIXED INDUCTOR
TYPE D412F
Inductance Range: 2.2 - 47µH
Frequency Range: 0.1 - 1MHz
Description
The TOKO D412F Series is an extremely low profile surface mount
fixed inductor with a maximum height of 1.2mm. The product is
specifically designed for space constrained DC-DC converter
applications in portable platforms including wireless handsets,
PDA's, and consumer electronics.
Features
• 4.6mm x 4.6mm footprint ( 0.2mm)
• 1.2mm maximum height
• Reflow solderable
Dimensions & Recommended Patterns:
4.6
1.2 Max.
0.2
4.6
1.8
• Packaged on 2000 piece reels
• Lead-free terminations
STANDARD PARTS SELECTION GUIDE
Resist Zone
Unit: mm
(1) Inductance is measured by LCR-meter 4284A (Agilent) or equivalent.
(2) DC resistance is measured by Digital Multimeter TR6871 (Advantest) or equivalent.
(3) Maximum allowable DC current is that which causes a 30% inductance reduction from the initial value,
or coil temperature to rise by 40°C, whichever is smaller. (Reference ambient temperature 20°C).
Rated DC current for a 10% inductance reduction is provided as well.
TYPE D412F
Inductance (1)
Tolerance
( % )
DC (2)
Resistance
( Ω ) max.
Inductance (3)
Decrease Current
Temperature (3)
Rise Current
+40°C ∆T
TOKO
Part
Number
(µH)
-10%
-30%
(A) max.
(A) max.
(A) max.
2.2
3.3
4.7
6.8
8.2
10
12
15
18
22
27
33
39
47
20
20
20
20
20
20
20
20
20
20
20
20
20
20
0.14
0.20
0.22
0.35
0.38
0.48
0.62
0.70
0.85
0.96
1.26
1.50
1.68
1.88
972AS-2R2M=P5
972AS-3R3M=P5
972AS-4R7M=P5
972AS-6R8M=P5
972AS-8R2M=P5
972AS-100M=P5
972AS-120M=P5
972AS-150M=P5
972AS-180M=P5
972AS-220M=P5
972AS-270M=P5
972AS-330M=P5
972AS-390M=P5
972AS-470M=P5
1.33
1.02
0.96
0.77
0.73
0.65
0.61
0.54
0.50
0.45
0.40
0.36
0.35
0.31
1.14
0.90
0.80
0.66
0.61
0.53
0.52
0.44
0.39
0.36
0.32
0.29
0.26
0.24
1.24
1.03
0.95
0.72
0.71
0.67
0.59
0.55
0.53
0.48
0.40
0.38
0.37
0.35
Note: =P5 is added to each part number to indicate tape and reel packaging.
January 2005
1
CF-271-D412F
R-LOG0105A
© 2005 TOKO America, Inc.
All Rights Reserved
Printed in USA