3D Model
Datasheet
Specifications
Electrical specifications at 25°C.
For Flyback Applications
| Part number 1 |
Inductance (µH)
2
(Tolerance: ±20%) |
DCR max (Ω) 3 |
Isolation Voltage (V) 4 |
Leakage Inductance (µH) |
|---|---|---|---|---|
| ST612PND273MLZ | 27 | 0.12 | 500 | 0.43 |
For SEPIC Applications
| Part number 1 |
Inductance (µH)
2
(Tolerance: ±20%) |
DCR max (Ω) 3 | SRF (MHz) 5 | Coupling coefficient |
Leakage Inductance (µH) |
Isat (A) 6 | Irms (A) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Typ | 10% drop | 20% drop | 30% drop | both windings 7 | one winding 8 | |||||
| ST612PND273MLZ | 27 | 0.12 | 8.0 | 10.0 | 0.99 | 0.43 | 5.8 | 6.6 | 7.0 | 1.8 | 2.5 |
Notes
- When ordering, please specify termination and screening codes: e.g. ST612PND105KLZ.
- 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.
- Winding-to-winding and winding-to-core isolation 500 Vrms.
- SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
- DC current at 25°C that causes the specified inductance drop 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. This information is for reference only and does not represent absolute maximum ratings.
- Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.
Termination:
- L = Matte tin over nickel over phos bronze.
- S = Tin-lead (63/37) over tin over nickel over phos bronze.
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 +125°C with Irms current.
Storage temperature range:
Component: –55C to +165°C.
Tape and reel packaging: –55°C to +80°C.
Tape and reel packaging: –55°C to +80°C.
Maximum part temperature:
+165°C (ambient + temp rise).
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
Performance curves
Typical L vs Current
Typical L vs Frequency
Schematics
General specification
Core Material:
Ferrite
Weight:
3.8 g – 4.6 g
Packaging:
500/13′′ reel; Plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing, 8.1 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.