Datasheet
3D Model
ST558PTA Series
Power Inductors for Critical Applications
ST558PTA Series high current, low DCR shielded power inductors.
- 10.2 × 11 mm base; only 5.2 mm tall.
- Magnetic shielding allows high density mounting.
- Materials allow for –55°C storage.
- Tin-silver over tin over nickel over phos bronze (pins 1 and 2); matte tin over nickel over phos bronze (pin 3) termination.
Specifications
Electrical specifications at 25°C.
| Part number 1 |
Inductance (µH)
2
(Tolerance: ±20%) |
DCR max (mΩ) 3 | SRF (MHz) 4 | Isat (A) 5 | Irms (A) 6 | ||||
|---|---|---|---|---|---|---|---|---|---|
| min | typ | 10% drop | 20% drop | 30% drop | 20°C rise | 40°C rise | |||
| ST558PTA301MLZ | 0.30 | 4.0 | 119 | 170 | 29.5 | 30.0 | 30.5 | 12.5 | 16.3 |
| ST558PTA801MLZ | 0.80 | 4.0 | 70.0 | 100 | 24.9 | 25.2 | 25.6 | 12.5 | 16.3 |
| ST558PTA102MLZ | 1.0 | 4.0 | 66.5 | 95.0 | 16.5 | 17.0 | 17.5 | 12.5 | 16.3 |
| ST558PTA122MLZ | 1.2 | 6.0 | 63.7 | 91.0 | 20.5 | 21.0 | 21.3 | 11.0 | 15.0 |
| ST558PTA132MLZ | 1.3 | 4.0 | 56.7 | 81.0 | 12.9 | 16.8 | 17.2 | 12.5 | 16.3 |
| ST558PTA152MLZ | 1.5 | 4.0 | 52.5 | 75.0 | 13.5 | 14.0 | 14.5 | 11.0 | 15.0 |
| ST558PTA182MLZ | 1.8 | 6.0 | 49.0 | 70.0 | 13.3 | 13.8 | 14.3 | 11.0 | 15.0 |
| ST558PTA202MLZ | 2.0 | 9.0 | 45.5 | 65.0 | 15.3 | 15.8 | 16.2 | 8.5 | 11.5 |
| ST558PTA222MLZ | 2.2 | 4.0 | 40.6 | 58.0 | 8.9 | 9.6 | 10.0 | 12.5 | 16.3 |
| ST558PTA252MLZ | 2.5 | 7.5 | 38.5 | 55.0 | 11.4 | 11.8 | 12.1 | 9.0 | 12.0 |
| ST558PTA322MLZ | 3.2 | 6.0 | 37.1 | 53.0 | 7.3 | 7.8 | 8.5 | 11.0 | 15.0 |
| ST558PTA402MLZ | 4.0 | 9.0 | 32.9 | 47.0 | 8.3 | 8.5 | 8.8 | 8.5 | 11.5 |
| ST558PTA432MLZ | 4.3 | 7.5 | 30.8 | 44.0 | 6.4 | 6.8 | 7.0 | 9.0 | 12.0 |
| ST558PTA572MLZ | 5.7 | 9.0 | 24.5 | 35.0 | 5.4 | 5.8 | 6.0 | 8.5 | 11.5 |
Notes
- When ordering, please specify screening code: e.g. ST558PTA572MLZ.
- Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A or equivalent.
- . DCR measured on a micro-ohmmeter.
- SRF measured using an Agilent/HP 8753D network analyzer.
- Typical DC current at which the inductance drops the specified amount from its value without current.
- Typical current that causes the specified temperature rise from 25°C ambient.
Screening:
- Z = Unscreened
- Y = Unscreened (SLDC Option A)
- W = Unscreened (SLDC Option B)
- H = Group A screening per Coilcraft CP-SA-10001
- G = Coilcraft CP-SA-10001 Group A (SLDC Option A)
- D = Coilcraft CP-SA-10001 Group A (SLDC Option B)
Custom screening also available.
Environmental
Ambient temperature range:
–40°C to +85°C with Imax current.
Storage temperature range:
Component: –55°C to +125°C.
Tape and reel packaging: –55°C to +80°C.
Tape and reel packaging: –55°C to +80°C.
Maximum part temperature:
+125°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
Performance curves
L vs Current
L vs Frequency
Schematics
General specification
Core Material:
Ferrite
Weight:
1.6 g
Packaging:
200/7″ reel Plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing, 5.45 mm pocket depth.
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.