COILCRAFT ST350RAT

AIR CORE INDUCTORS
AirCoreInductors for Critical Applications
ST350RAT
ST394RAT
■High Q over a wide range of frequencies
■Acrylic jacket provides a flat top for pick and place
■Solder coated leads ensure reliable soldering
Terminations Tin-silver over copper. Other terminations available at
additional cost.
Ambient temperature –40°C to +125°C with Imax current, +125°C
to +145°C with derated current
Storage temperature Component: –40°C to +140°C.
Tape and reel packaging: –40°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) +5 to +70 ppm/°C
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Packaging ST350RAT: 500 per 7″ reel Plastic tape: 8 mm wide, 0.3 mm
thick, 4 mm pocket spacing, 1.5 mm pocket depth
ST394RAT: 500 per 7″ reel Plastic tape: 12 mm wide, 0.3 mm
thick, 4 mm pocket spacing, 1.6 mm pocket depth
SRF
DCR
L2 Percent Q3 min4 max5 Imax
Part number1 Turns(nH) tol min (GHz)(mOhm) (A)
ST350RAT1N7KLZ2 1.65 10 10010
4.0 1.6
ST350RAT2N6JLZ3 2.55 5 100 8.2 5.0 1.6
ST350RAT3N9_LZ4 3.85 5,2 100 7.5 6.0 1.6
ST350RAT5N4_LZ5 5.40 5,2 100 7.0 8.0 1.6
ST394RAT5N6_LZ6 5.60 5,2 100 6.5 9.0 1.6
ST394RAT7N2_LZ7 7.15 5,2 100 6.0 10 1.6
ST394RAT8N8_LZ8 8.80 5,2 100 6.0 12 1.6
ST394RAT9N9_LZ9 9.85 5,2 100 5.2 13 1.6
ST394RAT13N_LZ10 12.55 5,2 100 4.6 14
1.6
1. When ordering, specify tolerance, termination and testing codes:
ST394RAT10GLZ
Tolerance: G=2% J = 5%
Termination:L= RoHS compliant tin-silver over copper.
Special order: T = RoHS tin-silver-copper
(95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
Testing:Z=COTS
H= Screening per Coilcraft CP-SA-10001
2. Inductance measured at 800 MHz on an Agilent/HP 4286A or equivalent with a Coilcraft SMD-A test fixture and correlation.
3. Q measured at 800 MHz on an Agilent/HP 4291A or equivalent with a
16193A test fixture or equivalent.
4. SRF measured on an Agilent/HP 8753ES or equivalent with a Coilcraft
CCF1268 test fixture. Parts with SRF >5 GHz are verified to >5 GHz in
screening.
5. DCR measured on a Keithley 580 Micro-Ohmmeter or equivalent.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Suggested Land Patterns
Dimensions are in
®
Specifications subject to change without notice.
Please check our website for latest information.
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
inches
mm
Document ST163-1 Revised 10/24/11
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
AIR CORE INDUCTORS
ST350RAT/ST394RAT Air Core Inductors
L vs Frequency – ST394RAT Series
14
14
12
12
10
10
8
6
5.40 nH
4
3.85 nH
2
2.55 nH
1.65 nH
0
100
7.15 nH
6
5.60 nH
4
100
1000
Frequency (MHz)
250
5.40 nH
150
100
7.15 nH 8.80 nH
5.60 nH
12.55 nH
9.85 nH
200
Q factor
Q factor
8.80 nH
Q vs Frequency – ST394RAT Series
2.55 nH 1.65 nH
3.85 nH
200
9.85 nH
8
0
Frequency (MHz)
250
12.55 nH
2
1000
Q vs Frequency – ST350RAT Series
150
100
50
50
0
Inductance (nH)
Inductance (nH)
L vs Frequency – ST350RAT Series
100
0
1000
100
Frequency (MHz)
1000
Frequency (MHz)
Typical Current Derating
120
110
90
80
70
60
50
40
30
25°C
Percent of rated Irms
100
20
10
0
-40
-20
0
20
40
60
80
100
120 140
Ambient temperature (°C)
®
Specifications subject to change without notice.
Please check our website for latest information.
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
Document ST163-2 Revised 10/24/11
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com