Datasheet 3D Models

MS439RAT, MS470RAT

High-Reliability Air Core Inductors

MS439RAT, MS470RAT Series utilize high temperature materials allowing operation in ambient temperatures up to 155°C.
  • Small air core inductors feature high Q and tight tolerance.
  • Tin-lead (Sn-Pb) terminations ensure the best possible board adhesion.
  • Tin-lead (63/37) over copper terminations.

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Specifications

Electrical specifications at 25°C.

MS439RAT Series

Part number 1 Turns Inductance (nH) 2 Tolerance (%) Q min
@ 150 MHz 3
SRF min (GHz) 4 DCR max (mΩ) 5 Imax (A)
MS439RAT13N_SZ 4 12.5 5,2 137 3.3 3.4 4
MS439RAT19N_SZ 5 18.5 5,2 132 2.5 3.9 4
MS439RAT2N5KSZ 1 2.5 10 145 > 5.0 1.1 4
MS439RAT5N0_SZ 2 5.0 5,2 140 > 5.0 1.8 4
MS439RAT8N0_SZ 3 8.0 5,2 140 5.0 2.6 4

MS470RAT Series

Part number 1 Turns Inductance (nH) 2 Tolerance (%) Q min
@ 150 MHz 3
SRF min (GHz) 4 DCR max (mΩ) 5 Imax (A)
MS470RAT18N_SZ 6 17.5 5,2 100 2.2 4.5 4
MS470RAT22N_SZ 7 22.0 5,2 102 2.1 5.2 4
MS470RAT28N_SZ 8 28.0 5,2 105 1.8 6.0 4
MS470RAT36N_SZ 9 35.5 5,2 112 1.5 6.8 4
MS470RAT43N_SZ 10 43.0 5,2 106 1.2 7.9 4
Notes
  1. When ordering, please specify tolerance and testing codes: e.g. MS470RAT43NGSZ.
  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.

Tolerance:

  • G = 2%
  • J = 5%
  • = 10%
Environmental
Ambient temperature range:
–55°C to +125°C with Imax current.
Storage temperature range:
Component: –55°C to +155°C.
Packaging: –40°C to +80°C.
Maximum part temperature:
+155°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

L vs Frequency

Q vs Frequency

Physical characteristics

439_470ratd.gif
Dimensions are in  inchesmm

General specification

Weight:
48 – 188 mg
Packaging:
MS439RAT: 700/7″ reel Plastic tape: 12 mm wide, 0.32 mm thick, 8 mm pocket spacing, 3.3 mm pocket depth. 
MS470RAT: 500/7″ reel; Plastic tape: 16 mm wide, 0.28 mm thick, 8 mm pocket spacing, 3.4 mm pocket depth.
Temperature coefficient of inductance:
+5 to +70 ppm/°C.

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity).
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles.
Refer to Soldering Coilcraft Components before soldering.