0603 CHIP INDUCTORS
Chip Inductors for Critical Applications
ST312RAG
■
■
■
■
Higher Q and lower DCR than other 0603 inductors
Highest SRF values – as high as 16 GHz
Excellent current handling capability – up to 1500 mA
43 inductance values from 1.8 to 150 nH
Current Derating
120
110
100
Typical L vs Frequency
1000
150 nH
82 nH
Percent of rated
I
rms
90
80
70
60
50
Inductance (nH)
100
51 nH
24 nH
10 nH
30
20
10
0
-55 -40
-20
0
20
25°C
40
40
60
80
100
120
140 160
10
Ambient temperature (°C)
B
overall
C
D
F
A
G
F
E
terminal
Terminal wraparound:
approx 0.01/0,24 both ends
I
J
I
H
1
10
100
1000
10000
Frequency (MHz)
Typical Q vs Frequency
160
140
120
100
24 nH
80
60
40
20
0
10
100
1000
10000
51 nH
82 nH
150 nH
10 nH
Suggested
Land Pattern
H
I
J
A
max
1,75
B
min
–
max
0,86 – 1,09
C
max
0,86
D
E
F
G
0.069 0.034 – 0.043 0.034 0.015 0.029 0.013 0.038 0.040 0.027 0.028 inches
0,38 0,74 0,33
0,96 1,02 0,69 0,71 mm
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.
Q Factor
Frequency (MHz)
Core material
Ceramic
Terminations
Silver-palladium-platinum-glass frit. Other termina-
tions available at additional cost.
Ambient temperature
–40°C to +125°C with
Irms
current, +125°C
to +140°C with derated current
Storage temperature
Component: –55°C to +125°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 +125 ppm/°C
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Packaging
2000 per 7″ reel Paper tape: 8 mm wide, 1 mm thick,
4 mm pocket spacing
®
Document ST537-1 Revised 11/06/12
1102 Silver Lake Road
Cary, IL 60013
Phone 800-981-0363
Fax 847-639-1508
Email cps@coilcraft.com
www.coilcraft-cps.com
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specifications subject to change without notice.
Please check our web site for latest information.
© Coilcraft, Inc. 2012
0603 CHIP INDUCTORS
ST312RAG Series (0603)
Part number
1
ST312RAG1N8JLZ
ST312RAG3N3_LZ
ST312RAG3N6_LZ
ST312RAG3N9_LZ
ST312RAG4N3_LZ
ST312RAG4N7_LZ
ST312RAG5N1_LZ
ST312RAG5N6_LZ
ST312RAG6N0_LZ
ST312RAG6N8_LZ
ST312RAG7N2_LZ
ST312RAG7N5_LZ
ST312RAG8N2_LZ
ST312RAG8N7_LZ
ST312RAG9N1_LZ
ST312RAG9N5_LZ
ST312RAG10N_LZ
ST312RAG11N_LZ
ST312RAG12N_LZ
ST312RAG15N_LZ
ST312RAG16N_LZ
ST312RAG18N_LZ
ST312RAG22N_LZ
ST312RAG23N_LZ
ST312RAG24N_LZ
ST312RAG27N_LZ
ST312RAG30N_LZ
ST312RAG33N_LZ
ST312RAG36N_LZ
ST312RAG39N_LZ
ST312RAG43N_LZ
ST312RAG47N_LZ
ST312RAG51N_LZ
ST312RAG56N_LZ
ST312RAG68N_LZ
ST312RAG72N_LZ
ST312RAG75N_LZ
ST312RAG82N_LZ
ST312RAG91N_LZ
ST312RAGR10_LZ
ST312RAGR11_LZ
ST312RAGR12_LZ
ST312RAGR15_LZ
Inductance
2
(nH)
1.8
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.0
6.8
7.2
7.5
8.2
8.7
9.1
9.5
10
11
12
15
16
18
22
23
24
27
30
33
36
39
43
47
51
56
68
72
75
82
91
100
110
120
150
L test Q min
3
Percent freq
at
tolerance (MHz) 250 MHz
5
5,2
5,2
5,2
5,2
5,2
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
5,2,1
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
200
200
200
200
150
150
150
150
150
150
150
150
17
35
32
33
28
22
38
43
40
34
36
32
37
33
38
40
38
36
32
36
32
34
30
36
43
34
40
38
36
38
36
39
37
36
37
36
36
36
36
36
35
36
36
900 MHz
L typ Q typ
3
1.77
3.28
3.59
3.88
4.29
4.65
5.08
5.6
5.92
6.83
7.25
7.55
8.21
8.73
9.18
9.56
10.16
11.06
12.26
15.41
16.37
18.56
22.7
24.0
24.9
28.4
31.5
34.9
38.5
41.5
45.7
50.6
54.6
60.3
75.5
80.8
84.6
94.0
103.0
114.0
126.2
142.4
188.8
40
67
70
68
58
48
84
87
94
88
96
81
96
97
76
98
90
78
69
83
77
76
77
69
77
74
82
76
69
78
83
77
73
74
73
69
71
62
64
69
63
61
57
1.7 GHz
L typ Q typ
3
1.77
3.32
3.62
3.95
4.31
4.71
5.12
5.73
6.12
7.05
7.38
7.85
8.39
9.00
9.64
9.99
10.64
11.82
13.20
17.20
18.70
20.90
25.90
29.53
28.9
34.0
37.9
42.9
50.0
51.9
58.1
66.9
71.3
79.9
113.3
—
—
—
—
—
—
—
—
65
104
116
108
91
75
140
145
154
143
139
112
148
149
109
149
142
108
91
124
116
100
88
80
91
84
82
80
64
74
76
72
62
56
49
—
—
—
—
—
—
—
—
SRF
min
4
(GHz)
>5.00
>5.00
>5.00
>5.00
>5.00
>5.00
>5.00
>5.00
4.80
4.64
4.32
4.24
4.72
4.40
4.08
3.92
3.44
3.28
3.28
2.88
2.80
2.64
2.52
2.40
2.36
2.24
2.24
2.16
2.00
1.96
1.96
1.84
1.84
1.76
1.60
1.52
1.52
1.44
1.32
1.36
1.28
1.24
1.08
DCR
max
5
(Ohms)
0.035
0.030
0.033
0.045
0.080
0.100
0.042
0.042
0.053
0.050
0.080
0.100
0.054
0.054
0.054
0.053
0.054
0.075
0.110
0.085
0.095
0.075
0.140
0.195
0.085
0.150
0.130
0.170
0.225
0.190
0.170
0.270
0.280
0.30
0.33
0.42
0.52
0.46
0.58
0.54
0.58
0.72
0.82
Imax
(mA)
800
800
800
800
710
720
800
800
800
800
800
800
800
800
800
800
800
800
750
800
790
800
600
560
800
620
720
560
480
540
630
440
440
420
400
380
340
350
310
340
310
280
260
Color
code
Black
Blue
Red
Brown
Orange
Violet
Green
Black
White
Red
Green
Brown
Orange
Yellow
Black
Blue
Orange
Gray
Yellow
Green
White
Blue
Violet
Orange
Black
Gray
Brown
White
Red
Black
Orange
Brown
Blue
Red
Orange
Yellow
Violet
Green
White
Blue
Violet
Gray
White
1. When ordering, specify
tolerance, termination
and
testing
codes:
ST312RAGR39GLZ
Tolerance:
F
= 1%
G
= 2%
J
= 5%
Termination: L
= RoHS compliant silver-palladium-platinum-glass frit.
Special order:
S
= Tin-lead (63/37) over silver-palladium-platinum-
glass frit.
T
= Tin-silver-copper (95.5/4/0.5) over silver-palladium-
platinum-glass frit.
Testing:
Z
= COTS
H
= Screening per Coilcraft CP-SA-10001
2. Inductance measured at 250 MHz using a Coilcraft SMD-A test fixture
and Coilcraft-provided correlation pieces with an Agilent/HP 4286A
impedance analyzer or equivalent.
3. Q measured using an Agilent/HP 4291A with an Agilent/HP 16197A
test fixture or equivalents.
4. SRF measured using an Agilent/HP 8753ES network analyzer or
equivalent and a Coilcraft CCF1232 test fixture.
5. DCR measured on a Keithley 580 micro-ohmmeter or equivalent and a
Coilcraft CCF1010 test fixture.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
®
Document ST537-2 Revised 11/06/12
1102 Silver Lake Road
Cary, IL 60013
Phone 800-981-0363
Fax 847-639-1508
Email cps@coilcraft.com
www.coilcraft-cps.com
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specifications subject to change without notice.
Please check our web site for latest information.
© Coilcraft, Inc. 2012
Power technology
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