Parametric Search
Datasheet Index
Products
Back to Main Menu
Design Tools
Back to Main Menu
Testing (Lab Services)
Back to Main Menu
Resource Center
Back to Main Menu
Quality
Back to Main Menu
Company
Back to Main Menu
Visit Coilcraft.com
Datasheet 3D Model
Request Quote:
;

ST312RAAR22

For more information and specification about the part.

Go to series

Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (nH) 2 Tolerance (%) Q min 3 SRF min (MHz) 4 DCR max (Ω) 5 Imax (mA) Color code
ST312RAAR22_LZ 220 5,2 25 760 2.100 160 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.