 
Base/Gate Driver Transformers
| New RoHS part numbers are shown.
Lead was removed from terminations. The last character is now L to indicate RoHS
compliance. (View old data sheet.)
|
- Lower cost than toroidal equivalents
- Frequency range of 10 - 250 kHz and up
- VDE, IEC, UL, CSA compliant
- 3750 Vrms isolation between windings
- Constructed with UL approved Class 130°C insulation system (UL File
E83628)
- RoHS-compliant. Tin-silver over tin over copper
terminations.
Photo  Pricing  Materials declaration  PDF data sheet
Standard Version Specifications
 Schematics  Dimensions
Part
number
Click for samples |
SD250-1L |
SD250-2L |
SD250-3L |
SD250-4L |
| Turns ratio ±3% (pri : sec) |
1 : 1 |
1 : 1.5 |
1 : 1 : 1 |
1 : 1.5 : 1.5 |
|
Primary winding |
|
|
|
|
| Inductance (min)1 |
1.5 mH |
1.5 mH |
1.5 mH |
1.5 mH |
| Leakage inductance (max)1 |
4.0 µH |
4.0 µH |
4.0 µH |
4.0 µH |
| DCR |
0.4 Ohms |
0.4 Ohms |
0.4 Ohms |
0.4 Ohms |
| Volt-time product |
375 V-µsec |
375 V-µsec |
375 V-µsec |
375 V-µsec |
|
Secondary winding(s) |
|
|
|
|
| Capacitance, pri to sec (max) |
50 pF |
50 pF |
50 pF |
50 pF |
| DCR, each section (max) |
0.75 Ohms |
2.5 Ohms |
0.75 Ohms |
2.5 Ohms |
 |
| 1 |
Measured at 1 Vrms, 15.75 kHz |
| 2 |
Ambient temperature range: |
–40°C to +85°C |
| 3 |
Storage temperature range: |
Component: –40°C to +85°C
Packaging: –55°C to +80°C |
| 4 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
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