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Close up of ST312RAA30N_LZ
Datasheet 3D Model
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ST312RAA30N

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Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (nH) 2 Tolerance (%) 900 MHz 1.7 GHz Q min 3 SRF min (MHz) 4 DCR max (Ω) 5 Imax (mA) Color code
L typ Q typ 3 L typ Q typ 3
ST312RAA30N_LZ 30 5,2,1 31.4 47 39.9 28 32 2240 0.220 500 Brown
Notes
  1. When ordering, specify tolerance, termination and testing codes: e.g. ST312RAAR39JLZ.
  2. Inductance measured using a Coilcraft SMD-A test fixture and Coilcraft-provided correlation pieces with an Agilent/HP 4286A impedance analyzer or equivalent.
  3. Q measured at the same frequency as inductance using an Agilent/HP 4291A with an Agilent/HP 16197A test fixture or equivalents.
  4. SRF measured using an Agilent/HP 8753ES network analyzer and a Coilcraft CCF1232 test fixture.
  5. DCR measured on a Keithley 580 micro-ohmmeter and a Coilcraft CCF1010 test fixture.

Tolerance:

  • F = 1%
  • G = 2%
  • J = 5%

Termination:

  • L = Silver-palladium-platinum glass frit.
  • S = Tin-lead (63/37) over silver-platinum-glass frit. (Special order, added cost)
  • T = Tin-silver-copper (95.5/4/0.5) over silver-platinum-glass frit. (Special order, added cost)
  • R = Tin over nickel over silver-platinum-glass frit. (Special order, added cost)
  • P = Tin-lead (63/37) over tin over nickel over silver-platinum-glass frit. (Special order, added cost)
  • Q = Tin-silver-copper (95.5/4/0.5) over tin over nickel over silver-platinum-glass frit. (Special order, added cost)

Testing:

  • Z = Unscreened
  • H = Group A screening per Coilcraft CP-SA-10001
Screening performed to the document’s latest revision.
Custom screening also available.
Environmental
Ambient temperature range:
–40°C to +125°C with Imax 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):
See FIT/MTBF Calculations

Performance curves

Typical L vs Frequency

Typical L vs Frequency

Typical Q vs Frequency

Typical Q vs Frequency

Physical characteristics

DIM.PNG

General specification

Core Material:
Ceramic
Packaging:
2000 per 7′′ reel Paper tape: 8 mm wide, 1.0 mm thick, 4 mm pocket spacing.
Temperature coefficient of inductance:
+25 to +155 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.