Datasheet
3D Model
ST512PJD Series
Coupled Inductors for Critical Applications
These coupled miniature shielded inductors are 3.5 mm high and 6.0 mm square. They provide high inductance, high efficiency and excellent current handling in low cost part.
Tight coupling (k ≥ 0.97) makes the ST512PJD series of coupled inductors ideal for use in a variety of circuits including flyback, multi-output buck, SEPIC and Zeta.
They can be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer.
They can be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer.
Specifications
Electrical specifications at 25°C.
For Flyback Applications
| Part number 1 |
Inductance (µH)
2
(Tolerance: ±20%) |
DCR max (Ω) 3 |
Isolation Voltage (V) |
Leakage Inductance (µH) 5 |
|---|---|---|---|---|
| ST512PJD682MLZ | 6.8 | 0.12 | 100 | 0.10 |
| ST512PJD103MLZ | 10 | 0.16 | 100 | 0.12 |
| ST512PJD223MLZ | 22 | 0.30 | 100 | 0.15 |
| ST512PJD473MLZ | 47 | 0.62 | 100 | 0.21 |
| ST512PJD104MLZ | 100 | 1.2 | 100 | 0.45 |
| ST512PJD474MLZ | 470 | 3.5 | 100 | 0.61 |
| ST512PJD105MLZ | 1000 | 7.0 | 100 | 1.1 |
| ST512PJD155MLZ | 1500 | 10.8 | 100 | 1.7 |
| ST512PJD205MLZ | 2000 | 16.0 | 100 | 2.1 |
For SEPIC Applications
| Part number 1 |
Inductance (µH)
2
(Tolerance: ±20%) |
DCR max (Ω) 3 | SRF Typ (MHz) 4 | Coupling coefficient |
Leakage Inductance (µH) 5 |
Isat (A) 6 | Irms (A) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 10% drop | 20% drop | 30% drop | both windings 7 | one winding 8 | ||||||
| ST512PJD682MLZ | 6.8 | 0.12 | 31.0 | 0.99 | 0.10 | 2.80 | 3.00 | 3.12 | 1.40 | 1.98 |
| ST512PJD103MLZ | 10 | 0.16 | 26.0 | 0.99 | 0.12 | 2.50 | 2.70 | 2.80 | 1.30 | 1.83 |
| ST512PJD223MLZ | 22 | 0.30 | 15.0 | >0.99 | 0.15 | 1.50 | 1.67 | 1.73 | 0.85 | 1.20 |
| ST512PJD473MLZ | 47 | 0.62 | 9.7 | >0.99 | 0.21 | 0.90 | 0.98 | 0.99 | 0.60 | 0.85 |
| ST512PJD104MLZ | 100 | 1.2 | 7.0 | >0.99 | 0.45 | 0.46 | 0.50 | 0.51 | 0.40 | 0.57 |
| ST512PJD474MLZ | 470 | 3.5 | 3.0 | >0.99 | 0.61 | 0.18 | 0.22 | 0.23 | 0.25 | 0.35 |
| ST512PJD105MLZ | 1000 | 7.0 | 1.9 | >0.99 | 1.1 | 0.12 | 0.14 | 0.15 | 0.15 | 0.21 |
| ST512PJD155MLZ | 1500 | 10.8 | 1.5 | >0.99 | 1.7 | 0.10 | 0.12 | 0.13 | 0.14 | 0.20 |
| ST512PJD205MLZ | 2000 | 16.0 | 1.3 | >0.99 | 2.1 | 0.08 | 0.11 | 0.12 | 0.11 | 0.16 |
Notes
- When ordering, please specify termination and screening code: e.g. ST512PJD105MLZ.
- Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value.
- DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
- SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
- Leakage inductance is for L1 and is measured with L2 shorted.
- DC current, at which the inductance drops the specified amount from its value without current. It is the sum of the current flowing in both windings.
- Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
- Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation.
Termination:
- L= RoHS compliant silver-palladium-platinum-glass frit.
- P= Tin-lead (63/37) over tin over nickel.
- R= Matte tin over nickel over silver.
- T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
- S = non-RoHS tin-lead (63/37). (Special order, added cost)
Screening:
- Z = Unscreened
- Y = Unscreened (SLDC Option A)
- W = Unscreened (SLDC Option B)
- H = Group A screening per Coilcraft CPSA-10001
- G = Coilcraft CP-SA-10001 Group A (SLDC Option A)
- D = Coilcraft CP-SA-10001 Group A (SLDC Option B)
Environmental
Ambient temperature range:
–40°C to +85°C with Irms 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
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
Performance curves
L vs Current
L vs Frequency
Schematics
General specification
Core Material:
Ferrite
Weight:
400 – 480 mg
Packaging:
750 per 7″ reel Plastic tape: 12 mm wide, 0.32 mm thick, 8 mm pocket spacing, 3.1 mm pocket depth.
Winding to Winding Isolation:
100 V
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.
Recommended Pick & Place Nozzle:
OD: 5 mm; ID: ≤ 2.5 mm.