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.
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
- When ordering, please specify termination and testing codes: e.g. ST319RAD10NJLZ.
- Inductance measured at 500 MHz using a Coilcraft SMD-A fixture in an Agilent/HP4286 impedance analyzer with Coilcraft-provided correlation pieces.
- Q measured at 500 MHz using an Agilent/HP4291A with an Agilent/HP16193 test fixture.
- SRF measured using an Agilent/HP8753D network analyzer and a Coilcraft SMD -D test fixture.
- 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
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.
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
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.