AT549RBT Series

Extreme Temperature Coil

Coilcraft CPS Air Core Inductors are designed for VHF-UHF RF applications requiring aerospace / military-level performance. Inductance linearity of the coil is not affected by changes in current, so that performance is maintained and unwanted harmonics are minimized. Thirteen series are available to ensure a match for your application.
  • Designed for use in extremely high-temperature applications, up to 300°C.
  • Suitable for use in down-hole applications and on-engine automotive applications

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Part number 1 Inductance (µH) 2
(Tolerance: ±20%)
SRF typ (MHz) 3 DCR max (mΩ) 4 Irms (A)
AT549RBT102MLZ 1.0 800 15.0 1.0
  1. When ordering, please specify termination and screening codes:
  2. Inductance measured at 100 kHz, 0 A using an Agilent / HP4284A LCR meter or equivalent.
  3. SRF measured on an Agilent / HP4291A Impedance Analyzer with an Agilent 16193A test fixture or equivalents.
  4. DCR measured on a Keithley 580 Micro-ohmmeter or equivalent.


  • L = Nickel clad copper
  • S = Tin-lead (95 Pb/5 Sn) over nickel clad copper


  • Z = Unscreened
  • H = Coilcraft CP-SA-10001 Group A
  • F = ESCC3201 (F4 operational life performed at 90°C)
  • 1 = EEE-INST-002 (Family 3) Level 1
  • 2 = EEE-INST-002 (Family 3) Level 2
  • 3 = EEE-INST-002 (Family 3) Level 3
  • 4 = MIL-STD-981 (Family 50) Class B
  • 5 = MIL-STD-981 (Family 50) Class S 
    • Screening performed to the document’s latest revision.
    • Custom testing also available. 
    • Country of origin restrictions available; prefix option G. 
Ambient temperature range:
–55°C to +300°C
Storage temperature range:
Component: –55°C to +300°C.
Tray packaging: –55°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Physical characteristics


General specification

0.5 g
Temperature coefficient of inductance:
+300 to +500 ppm/°C


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
40 second reflow at +350°C
Refer to Soldering Coilcraft Components before soldering.