ST439RAT Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Air Core Inductors for Critical Applications

AIR CORE INDUCTORS
Air
Core
Inductors
for
Critical
Applications
ST439RAT
ST470RAT
■ Small air core inductors feature high Q and tight tolerances
■ Acrylic jacket provides a flat top for pick and place
■ Solder coated leads ensure reliable soldering
Terminations  RoHS compliant tin-silver over copper. 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: –40°C to +140°C.
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 
ST439RAT: 700/7″ reel  Plastic tape: 12 mm wide, 0.32 mm thick,
8 mm pocket spacing, 3.3 mm pocket depth
ST470RAT: 500/7″ reel  Plastic tape: 16 mm wide, 0.28 mm thick,
8 mm pocket spacing, 3.4 mm pocket depth
SRF DCR
^  L² Percent ^  Q^{3  } min^{4  } max⁵ Imax Weight
  _{Part number}1 _{Turns (nH) tol min (GHz) (mOhm) (A) (mg)}
ST439RAT2N5KLZ 1 2.5 10 145 12.5 1.1 4
31
ST439RAT5N0_LZ 2 5.0 5,2 140 6.5 1.8 4
42
ST439RAT8N0_LZ 3 8.0 5,2 140 5.0 2.6 4
52
ST439RAT13N_LZ 4 12.5 5,2 137 3.3 3.4 4
65
ST439RAT19N_LZ 5 18.5 5,2 132 2.5 3.9 4
78
ST470RAT18N_LZ 6 17.5 5,2 100 2.2 4.5 4 100
ST470RAT22N_LZ 7 22.0 5,2 102 2.1 5.2 4 110
ST470RAT28N_LZ 8 28.0 5,2 105 1.8 6.0 4 118
ST470RAT36N_LZ 9 35.5 5,2 112 1.5 6.8 4 133
ST470RAT43N_LZ 10 43.0 5,2 106 1.2 7.9 4 147
1. When ordering, please specify tolerance, termination and testing codes:
ST470RAT43NGLZ
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 150 MHz on an Agilent/HP 4286A or equivalent with
a Coilcraft SMD-A test fixture and correlation.
3. Q measured at 150 MHz on an Agilent/HP 4291A or equivalent with a 16193A
test fixture or equivalent.
4. SRF measured on an Agilent/HP 8753ES network analyzer 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.
Dimensions
are
in
inches
mm
© Coilcraft, Inc. 2011
®
Specifications subject to change without notice.
Please check our website for latest information. Document ST107-1  Revised 10/24/11
1102 Silver Lake Road
Cary IL 60013
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