ST312RAA Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Chip Inductors for Critical Applications

0603 CHIP INDUCTORS
Chip Inductors for Critical Applications ST312RAA
Small size, exceptional Q and high SRFs make these
inductors ideal for high frequency applications where
size is at a premium. They also have excellent DCR and
current carrying characteristics.
Typical L vs Frequency
200
175
120 nH
150
125
100
68 nH
75
50
33 nH
25
0
10
100
1000
Frequency (MHz)
12 nH
3.9 nH
10000
Typical Q vs Frequency
120
110
100
90
80
70
60
50
40
30
20
10
0
1
3.9 nH
12 nH
33 nH
68 nH
120 nH
10
100
1000
Frequency (MHz)
10000
© Coilcraft, Inc. 2012
®
1102 Silver Lake Road
Cary, IL 60013
Phone [phone]
Current Derating
120
110
100
90
80
70
60
50
40
30
20
10
0
-40 -20
0
20 40 60 80 100 120 140
Ambient temperature (°C)
B
overall
A
E
terminal
C
F
G
F
D
Terminal wraparound:
approx 0.007/0,18 both ends
H
I
J
I
Suggested
Land Pattern
A
max
0.071
1,80
B
max
0.044
1,12
CD
max ref E F G H I J
0.040 0.015 0.030 0.013 0.034 0.040 0.025 0.025
1,02 0,38 0,76 0,33 0,86 1,02 0,64 0,64
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.
Core material Ceramic
Terminations  Silver-palladium-platinum-glass frit. Other termina-
tions available at additional cost.
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  2000 per 7″ reel  Paper tape:  8 mm wide, 1.0 mm thick,
4 mm pocket spacing
Document ST195-1  Revised 11/06/12
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Email [e-mail]
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.