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.) |
- Frequency range of 10 - 250 kHz and up
- 3750 Vrms isolation between windings
- Constructed with UL approved Class 130°C insulation system (UL File E83628)
- VDE, IEC, UL, CSA compliant
- RoHS-compliant. Tin-silver over tin over copper terminations.
- Samples of 4 standard transformers available in Coilcraft Designer's Kit P404
Photo 
Pricing 
Materials declaration 
PDF data sheet
Standard Version Specifications
| 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 |
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Primary winding |
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| 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 |
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Secondary winding(s) |
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| 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 |
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| 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 trays: –40°C to +80°C |
| 4 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
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