Datasheet 3D Model
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ST220RAA21N

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Specifications

Part number 1 Inductance (nH) 2
(Tolerance: ± 5%)
900 MHz 1.7 GHz 2.4 GHz Q min
@ 250 MHz 3
SRF min (GHz) 4 DCR max (Ω) 5 Imax (mA) 6
L typ Q typ 3 L typ Q typ 3 L typ Q typ 3
ST220RAA21NJLZ 21 20.9 53 22 82 24.1 95 21 4.0 0.370 320
Notes
  1. When ordering, please specify termination and screening codes: e.g. ST220RAA34NJLZ.
  2. Inductance measured at 250 MHz using a Coilcraft SMD-F fixture in an Agilent/HP 4286 impedance analyzer with Coilcraft-provided correlation pieces.
  3. For Q min: Q measured at 250 MHz using an Agilent/HP 4291A with an Agilent/ HP 16197A test fixture or equivalents.
    For Q typ: Q measured using an Agilent/HP 4287A with an Agilent/HP 16193 test fixture.
  4. SRF measured using an Agilent/HP 8722ES network analyzer and a test fixture with a 0.017″ air gap.
  5. DCR measured on a micro-ohmmeter and a Coilcraft CCF858 test fixture.
  6. Current that causes a 30°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.

Termination:

  • R = Matte tin over nickel over silver-platinum glass frit.
  • A = Gold over nickel over moly-mag.
  • L = Silver-palladium-platinum glass frit.
  • P = Tin-lead (63/37) over tin over nickel over silverplatinum-glass frit.
  • Q= Tin-silver-copper (95.5/4/0.5) over tin over nickel over silver-platinum-glass frit.
  • C = Tin-lead (63/37) over gold over nickel over moly-mag.
  • F = Tin-silver-copper (95.5/4/0.5) over gold over nickel over moly-mag.
  • S = Tin-lead (63/37) over silver-platinum-glass frit.
  • T = Tin-silver-copper (95.5/4/0.5) over silver-platinum glass frit.

Screening:

  • Z = Unscreened
  • = Coilcraft CP-SA-10001 Group A
  • Screening performed to the document’s latest revision.
  • Lot qualification (Group B) available.
  • Custom testing also available.
  • Country of origin restrictions available; prefix options G or F.
Environmental
Ambient temperature range:
–40°C to +125°C with Irms current.
Storage temperature range:
Component: –55°C to +140°C.
Tape and reel packaging: –55°C to +80°C.
Maximum part temperature:
+140°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Typical L vs Frequency

Typical Q vs Frequency

Physical characteristics

st220raa_dim.PNG

General specification

Core Material:
Ceramic
Weight:
0.3 – 0.6 mg
Packaging:
2000 per 7″ reel. Paper tape: 8 mm wide, 0.5 mm thick, 2 mm pocket spacing.
Temperature coefficient of inductance:
+25 to +125 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.