Datasheet 3D Model
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ST235RAGR18

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Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (nH) 2
(Tolerance: ± 5%)
Q min
@ 100 MHz 3
SRF min (GHz) 4 DCR max (Ω) 5 Imax (mA)
ST235RAGR18JRZ 180 20 1.40 2.100 150
Notes
  1. When ordering, specify tolerance, termination and screening codes: e.g. ST235RAG22NGRZ.
  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. Q typ measured using an Agilent/HP 4287A with an Agilent/HP 16197 test fixture.
  4. SRF measured using an Agilent/HP 8753ES network analyzer or equivalent and a Coilcraft CCF1232 test fixture.
  5. DCR measured on a micro-ohmmeter and a Coilcraft CCF1010 test fixture.

Tolerance:

  • G = 2%
  • J = 5%

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 silver-platinum-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 Imax current.
Storage temperature range:
Component: –55°C to +140°C.
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

dimension-(1).PNG

General specification

Core Material:
Ceramic
Weight:
0.65 – 1.3 mg
Packaging:
2000 per 7″ reel Paper tape: 8 mm wide, 0.66 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.