Close up of ST319RAD
Datasheet 3D Model

ST319RAD Series

Chip Inductors for Critical Applications

ST319RAD Series combines the exceptionally high Q of an air core inductor with the rugged construction of a ceramic body component.
  • Inductance values: 1.15 nH – 10.4 nH.
  • Provides intermediate inductance values not available in Coilcraft’s 0603, 0402 or 0906 product families.
  • Silver-palladium-platinum-glass frit terminations. Other terminations available at additional cost.

Looking for the commercial version of this part? See Coilcraft 0604HQ Series
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Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (nH) 2
(Tolerance: ± 5%)
900 MHz 1.7 GHz Q min
@ 500 MHz 3
SRF min (GHz) 4 DCR max (Ω) 5 Imax (A)
L typ Q typ 3 L typ Q typ 3
ST319RAD1N1JLZ 1.15 1.2 40 1.2 136 25 > 5.0 0.021 3.0
ST319RAD2N6JLZ 2.6 2.6 78 2.6 163 45 > 5.0 0.026 2.0
ST319RAD4N5JLZ 4.5 4.5 103 4.7 155 50 > 5.0 0.032 1.8
ST319RAD5N0JLZ 5.0 4.9 106 5.2 178 60 > 5.0 0.032 1.6
ST319RAD6N8JLZ 6.8 6.9 101 7.4 172 60 4.7 0.035 1.8
ST319RAD7N6JLZ 7.6 7.4 109 7.9 137 60 4.4 0.035 1.5
ST319RAD10NJLZ 10.4 10.6 103 11.5 160 60 4.1 0.037 1.5
Notes
  1. When ordering, please specify termination and testing codes: e.g. ST319RAD10NJLZ.
  2. Inductance measured at 500 MHz using a Coilcraft SMD-A fixture in an Agilent/HP4286 impedance analyzer with Coilcraft-provided correlation pieces.
  3. Q measured at 500 MHz using an Agilent/HP4291A with an Agilent/HP16193 test fixture.
  4. SRF measured using an Agilent/HP8753D network analyzer and a Coilcraft SMD -D test fixture.
  5. DCR measured on a Cambridge Technology micro-ohmmeter and a Coilcraft CCF858 test fixture.

Termination:

  • L = Silver-palladium-platinum glass frit.
  • S = Tin-lead (63/37) over silver-palladium-platinum-glass frit. (Special Order, added cost)
  • T = Tin-silver-copper (95.5/4/0.5) over silver-palladium-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
All screening performed to the document’s latest revision.
Custom screening also available.
Environmental
Ambient temperature range:
–55°C to +125°C with Imax current.
Storage temperature range:
Component: –55°C to +155°C.
Tape and reel packaging: –55°C to +80°C.
Maximum part temperature:
+155°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Typical Q vs Frequency

Typical L vs Frequency

Physical characteristics

DIM.PNG

General specification

Core Material:
Ceramic
Packaging:
2000 per 7′′ reel; Plastic tape: 8 mm wide, 0.23 mm thick, 4 mm pocket spacing, 1.27 mm pocket depth.
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.