1812 CHIP INDUCTORS
Chip Inductors for Critical Applications
ST450RAA
■
Higher SRF values than 1812 size parts with ferrite cores
■
5% tolerances for all values
■
19 inductance values from 1.0 to 33 µH
Inductance
2
(µH)
1.0 @ 7.9 MHz
1.2 @ 7.9 MHz
1.5 @ 7.9 MHz
1.8 @ 7.9 MHz
2.2 @ 7.9 MHz
2.7 @ 7.9 MHz
3.3 @ 7.9 MHz
3.9 @ 7.9 MHz
4.7 @ 7.9 MHz
5.6 @ 7.9 MHz
6.8 @ 7.9 MHz
8.2 @ 7.9 MHz
10.0 @ 7.9 MHz
12.0 @ 2.5 MHz
15.0 @ 2.5 MHz
18.0 @ 2.5 MHz
22.0 @ 2.5 MHz
27.0 @ 2.5 MHz
33.0 @ 2.5 MHz
Percent
tolerance
5
5
5,2
5
5
5
5
5,2
5
5
5
5
5
5
5
5
5,2
5
5,2
SRF min
4
(MHz)
260
230
210
190
170
160
145
130
115
100
90
80
70
60
50
40
40
30
20
DCR max
5
(Ohms)
1.1
1.2
1.6
2.0
2.2
3.2
3.8
5.0
5.4
5.7
6.6
7.0
7.7
8.7
9.6
10.5
11.5
12.5
13.5
Imax
(mA)
530
480
430
380
340
300
270
240
230
220
210
200
190
180
170
155
155
150
145
Part number
1
ST450RAA102JLZ
ST450RAA122JLZ
ST450RAA152_LZ
ST450RAA182JLZ
ST450RAA222JLZ
ST450RAA272JLZ
ST450RAA332JLZ
ST450RAA392_LZ
ST450RAA472JLZ
ST450RAA562JLZ
ST450RAA682JLZ
ST450RAA822JLZ
ST450RAA103JLZ
ST450RAA123JLZ
ST450RAA153JLZ
ST450RAA183JLZ
ST450RAA223_LZ
ST450RAA273JLZ
ST450RAA333_LZ
Q min
3
59 @ 50 MHz
54 @ 50 MHz
57 @ 50 MHz
57 @ 50 MHz
52 @ 50 MHz
53 @ 50 MHz
53 @ 50 MHz
53 @ 50 MHz
32 @ 10 MHz
32 @ 10 MHz
32 @ 10 MHz
32 @ 10 MHz
32 @ 10 MHz
26 @ 5 MHz
26 @ 5 MHz
28 @ 5 MHz
28 @ 5 MHz
28 @ 5 MHz
24 @ 2.5 MHz
1.When ordering, specify
tolerance, termination
and
testing
codes:
ST450RAA333JLZ
Tolerance: G
= 2%
J
= 5%
Termination: L
= RoHS compliant silver-palladium-platinum glass frit.
Special order:
S
= Tin-lead (63/37) over silver-platinum-glass frit.
T
= Tin-silver-copper (95.5/4/0.5) over silver-platinum-
glass frit.
P
= Tin-lead (63/37) over tin over nickel over silver-
platinum-glass frit.
Q
= Tin-silver-copper (95.5/4/0.5) over tin over nickel over
silver-platinum-glass frit.
Testing:
Z
= COTS
H
= Screening per Coilcraft CP-SA-10001
2. Inductance measured using a Coilcraft SMD-A fixture in an Agilent/
HP 4286 impedance analyzer or equivalent with Coilcraft-provided
correlation pieces.
3. Q measured at the same frequency as inductance using an Agilent/
HP 4291A with an Agilent/HP 16197 test fixture or equivalents.
4. SRF measured using an Agilent/HP 8753ES network analyzer or
equivalent and a Coilcraft SMD-D test fixture.
5. DCR measured on a Keithley 580 micro-ohmmeter or equivalent and a
Coilcraft CCF859 test fixture.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Core material
Ceramic
Terminations
Silver-palladium-platinum-glass frit. Other termina-
tions available at additional cost.
Weight:
109 – 128 mg
Ambient temperature
–40°C to +125°C with
Imax
current, +125°C
to +140°C with derated current
Storage temperature
Component: –55°C to +140°C.
Tape and reel packaging: –55°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Temperature Coefficient of Inductance (TCL)
+25 to +155 ppm/°C
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Packaging
600 per 7″ reel Plastic tape: 12 mm wide, 0.3 mm thick,
8 mm pocket spacing, 3.7 mm pocket depth
®
Specifications subject to change without notice.
Please check our website for latest information.
Document ST105-1 Revised 02/23/11
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
1812 CHIP INDUCTORS
ST450RAA Series (1812)
Typical Q vs Frequency
80
Typical L vs Frequency
40
1.8 µH
3.9 µH
33.0 µH
70
60
50
30
Inductance (µH)
Q Factor
8.2 µH
22.0 µH
40
30
20
15.0 µH
15.0 µH
22.0 µH
20
10
33.0 µH
8.2 µH
3.9 µH
1.8 µH
10
0
1
10
100
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
Current Derating
120
110
100
A
B
overall
F
G
F
E
terminal
C
I
J
I
D
Terminal wraparound:
approx 0.007/0,18 both ends
H
Percent of rated
I
rms
90
80
70
60
50
25°C
Suggested
Land Pattern
H
3,05
I
1,14
J
3,00
40
30
20
10
0
-40
-20
0
20
A max B max C max
0.195
4,95
0.150
3,81
0.135
3,43
D ref
0.070
1,78
E
2,54
F
0,64
G
3,25
0.100 0.025 0.128 0.120 0.045 0.118
40
60
80
100
120
140 160
Note: Dimensions are before optional solder application. For maximum
overall dimensions including solder, add 0.0025 in / 0,064 mm to
B
and 0.006 in / 0,15 mm to
A
and
C.
Ambient temperature (°C)
®
Specifications subject to change without notice.
Please check our website for latest information.
Document ST105-2 Revised 02/23/11
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
Embedded System
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