Specifications subject to change without notice.
Please check our website for latest information.
1102 Silver Lake Road
Cary IL 60013
Phone
Fax
800-981-0363
847-639-1508
E-mail
Web
cps@coilcraft.com
www.coilcraft-cps.com
®
© Coilcraft, Inc. 2011
Chip Inductors for Critical Applications
ST235RAA
0402 CHIP INDUCTORS
Document ST198-1 Revised 10/18/11
This 0402 size chip inductor series shares all of the
characteristics of Coilcraft’s other ceramic inductors: ex-
ceptionally high Q factors, especially at use frequencies;
outstanding self-resonant frequency; tight inductance
tolerance; and excellent batch-to-batch consistency.
A B C D
max max max ref E F G H I J
0.047 0.025 0.026 0.010 0.020 0.009 0.022 0.026 0.014 0.018
1,19 0,64 0,66 0,25 0,51 0,23 0,56 0,66 0,36 0,46
Core material Ceramic
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, 0.68 mm
thick, 2 mm pocket spacing
Current Derating
Typical Q vs Frequency
Typical L vs Frequency
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.
A
B
overall
C
D
J
F
F
G
H
E
terminal Te rminal wraparound:
approx 0.007/0,18 both ends
I
I
Suggested
Land Pattern
0
60
50
40
30
20
10
70
80
90
100
110
120
Q Factor
110 100 1000 10000
Frequency (MHz)
12 nH
19 nH
5.6 nH
27 nH
1 nH
56 nH
0
10
20
30
40
50
60
110100 1000 10000
Frequency (MHz)
Inductance (nH)
27 nH
56 nH
19 nH
12 nH
5.6 nH
1 nH
-40 -20 020406080100 140120
Ambient temperature (°C)
120
110
100
90
80
70
60
50
40
30
20
10
0
Percent of rated rmsI
25°C
1102 Silver Lake Road
Cary IL 60013
Phone
Fax
800-981-0363
847-639-1508
E-mail
Web
cps@coilcraft.com
www.coilcraft-cps.com
®
© Coilcraft, Inc. 2011
Specifications subject to change without notice.
Please check our website for latest information.
ST235RAA Series (0402)
Document ST198-2 Revised 10/18/11
0402 CHIP INDUCTORS
1. When ordering, specify tolerance, termination and testing codes:
ST235RAAR10GLZ
Tolerance: G = 2% J = 5%
Termination: L = RoHS compliant silver-palladium-platinum-glass frit.
Special order:
T = RoHS tin-silver-copper (95.5/4/0.5) over silver-
palladium-platinum-glass frit
S = non-RoHS tin-lead (63/37) over silver-palladium-
platinum-glass frit.
R = Tin over nickel over silver-platinum-glass frit.
Q = RoHS tin-silver-copper (95.5/4/0.5) over tin over
nickel over silver-platinum-glass frit.
P = non-RoHS tin-lead (63/37) over tin over nickel over
silver-platinum-glass frit.
Testing: Z = COTS
H = Screening per Coilcraft CP-SA-10001
Inductance2 Percent 900 MHz 1.7 GHz SRF min5 DCR max6 Imax
Part number1 (nH) tolerance Q min3 L typ Q typ4 L typ Q typ4 (GHz) (Ohms) (mA)
ST235RAA1N0JLZ 1.0 5 20 1.02 77 1.02 69 >5.00 0.045 600
ST235RAA1N2JLZ 1.2 5 12 1.17 28 1.17 38 >5.00 0.090 360
ST235RAA1N8JLZ 1.8 5 20 1.78 54 1.78 75 >5.00 0.070 600
ST235RAA1N9JLZ 1.9 5 20 1.72 68 1.74 82 >5.00 0.070 600
ST235RAA2N0_LZ 2.0 5,2 20 1.93 54 1.93 75 >5.00 0.070 600
ST235RAA2N2_LZ 2.2 5,2 20 2.19 59 2.23 100 >5.00 0.070 600
ST235RAA2N4_LZ 2.4 5,2 20 2.24 51 2.27 68 >5.00 0.068 600
ST235RAA2N7_LZ 2.7 5,2 16 2.58 42 2.60 61 >5.00 0.120 425
ST235RAA3N3_LZ 3.3 5,2 20 3.10 65 3.12 87 >5.00 0.066 600
ST235RAA3N6_LZ 3.6 5,2 20 3.56 45 3.62 71 >5.00 0.066 600
ST235RAA3N9_LZ 3.9 5,2 20 3.89 50 4.00 75 >5.00 0.066 600
ST235RAA4N3_LZ 4.3 5,2 20 4.19 47 4.30 71 >5.00 0.091 600
ST235RAA4N7_LZ 4.7 5,2 20 4.55 48 4.68 68 4.77 0.130 600
ST235RAA5N1_LZ 5.1 5,2 20 5.15 56 5.25 82 4.80 0.083 600
ST235RAA5N6_LZ 5.6 5,2 20 5.16 54 5.28 81 4.80 0.083 600
ST235RAA6N2_LZ 6.2 5,2 20 6.16 52 6.37 76 4.80 0.083 600
ST235RAA6N8_LZ 6.8 5,2 20 6.56 63 6.93 78 4.80 0.083 600
ST235RAA7N5_LZ 7.5 5,2 22 7.91 60 8.22 88 4.80 0.104 600
ST235RAA8N2_LZ 8.2 5,2 22 8.50 57 8.85 84 4.40 0.104 600
ST235RAA8N7_LZ 8.7 5,2 20 8.78 54 9.21 73 3.80 0.195 480
ST235RAA9N0_LZ 9.0 5,2 22 9.07 62 9.53 78 4.66 0.100 600
ST235RAA9N5_LZ 9.5 5,2 20 9.42 54 9.98 69 3.48 0.195 480
ST235RAA10N_LZ 10.0 5,2 21 9.8 50 10.10 67 3.68 0.195 480
ST235RAA11N_LZ 11.0 5,2 24 10.7 52 11.20 78 3.48 0.120 580
ST235RAA12N_LZ 12.0 5,2 24 11.9 53 12.70 71 3.60 0.120 580
ST235RAA13N_LZ 13.0 5,2 20 13.4 51 14.63 57 3.28 0.210 440
ST235RAA15N_LZ 15.0 5,2 22 14.6 55 15.50 77 3.10 0.172 500
ST235RAA16N_LZ 16.0 5,2 23 16.6 46 18.86 47 3.05 0.220 480
ST235RAA18N_LZ 18.0 5,2 24 18.3 57 20.28 62 2.68 0.230 420
ST235RAA19N_LZ 19.0 5,2 24 19.1 50 21.10 67 3.00 0.202 460
ST235RAA20N_LZ 20.0 5,2 24 20.7 52 23.66 53 2.90 0.250 400
ST235RAA22N_LZ 22.0 5,2 24 23.2 53 26.75 53 2.80 0.300 380
ST235RAA23N_LZ 23.0 5,2 24 23.8 49 26.90 64 2.72 0.300 400
ST235RAA24N_LZ 24.0 5,2 24 25.1 51 29.50 50 2.60 0.300 390
ST235RAA27N_LZ 27.0 5,2 24 28.7 49 33.50 63 2.48 0.298 380
ST235RAA30N_LZ 30.0 5,2 24 31.1 46 38.50 39 2.35 0.410 340
ST235RAA33N_LZ 33.0 5,2 20 34.9 31 41.74 32 2.30 0.300 340
ST235RAA36N_LZ 36.0 5,2 24 39.5 44 48.40 53 2.20 0.440 310
ST235RAA39N_LZ 39.0 5,2 24 41.7 47 50.23 45 2.10 0.550 200
ST235RAA40N_LZ 40.0 5,2 24 39.0 44 47.40 33 2.24 0.440 290
ST235RAA43N_LZ 43.0 5,2 22 45.8 46 61.55 34 2.03 0.810 100
ST235RAA47N_LZ 47.0 5,2 20 50.0 38 – – 2.10 0.830 150
ST235RAA51N_LZ 51.0 5,2 19 56.6 40 – – 1.75 0.820 100
ST235RAA56N_LZ 56.0 5,2 22 62.8 42 – – 1.76 0.966 100
ST235RAA68N_LZ 68.0 5,2 22 78.2 36 – – 1.62 1.120 100
ST235RAA82N_LZ 82.0 5,2 25 – – – – 1.26 1.550 50
ST235RAAR10_LZ 100 5,2 25 – – – – 1.16 2.000 50
ST235RAAR12_LZ 120 5,2 22 – – – – 1.20 2.200 50
2. Inductance measured at 250 MHz using a Coilcraft SMD-F test fixture
and Coilcraft-provided correlation pieces with an Agilent/HP 4286A
impedance analyzer or equivalent.
3. Q measured at 250 MHz using an Agilent/HP 4291A with an Agilent/
HP 16197A test fixture or equivalents.
4. Q measured using an Agilent/HP 4291A with an Agilent/HP 16197A
test fixture or equivalents.
5. SRF measured using an Agilent/HP 8753ES network analyzer and a
Coilcraft CCF1192 test fixture.
6. DCR measured on a Keithley 580 micro-ohmmeter and a Coilcraft
CCF1192 test fixture.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
