3L Part No:
FST1721-XXX
Applications:
．Digital
audio amplifier.
．Video
cameras.
．DC/DC
converters.
．Switching
power supply.
Shape and Dimensions：(Dimensions are in mm)
Item
FST1712
Features :
A
20.5
MAX
B
4.5
±0.5
C
11.0
±0.5
D
17.0
MAX
E
1.0
±0.1
Test equipments:
．L
tested by Agilent 4284A Precision LCR meter.
．DCR
tested by Milli-ohm meter.
．Electrical
specifications at 25
℃
.
．Low
DC resistance.
．High
current and high efficiency.
．Magnetically
shielded construction.
．RoHS
compliant.
Characteristics:
．Saturation
Current (Isat) : The current will cause
L
0
to drop approximately 10% typical
．
Temperature Rise Current ( Irms) : The current will
cause the coil temperature rise approximately
△
T=40
℃
.
．Operating
Temperature : -40
℃
to 125℃.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium,and
specificbromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
Lasting Leaning & Leading
3L Electronic Corp.
Web : http://www.3lcoil.com
Inductance Tolerance
Part
No.
L
(uH)
FST1721-100M
FST1721-150M
FST1721-180M
FST1721-200M
FST1721-220M
FST1721-270M
FST1721-300M
FST1721-330M
10
15
18
20
22
27
30
33
(±%)
20
20
20
20
20
20
20
20
Test
Freq
(1V)
100KHz
100KHz
100KHz
100KHz
100KHz
100KHz
100KHz
100KHz
DCR
mΩ
Max.
7.5
12.5
14.5
16.5
18.0
20.0
22.0
24.0
Isat
(A)
Max.
11.5
9.5
8.8
8.3
8.0
7.2
6.8
6.5
Irms
(A)
Max.
8.5
7.5
7.3
6.5
6.2
5.7
5.3
5.2
Lasting Leaning & Leading
3L Electronic Corp.
Web : http://www.3lcoil.com
