Base/GateDriverTransformers
Document 130-1
• Lower cost than toroidal equivalents
• Frequency range of 10 - 250 kHz and up
• Industry standard pin centers
• VDE, IEC, UL, CSA compatible
• 3750 VRMS isolation between windings
• UL approved Class 130°C insulation system
available (UL File E83628)
Coilcraft Designer’s Kit No. P204 contains sam-
ples of 4 standard driver transformers. To order,
please contact Coilcraft or visit http://order.coil-
craft.com to order on-line.
0.15 ± 0.030
3,81 ± 0,762
0.62 ± 0.015
15,75 ± 0,38
0.950
24,13
1.10
27,94
0.395
10,03
1.10
27,94
0.350
8,89
0.400
10,16
0.20
5,08
0.40
10,16
0.80
20,32
0.032
0,813
Max.
Max.
Max.
Max.
Diameter Ref.
(Pins 7 and 9 omitted on SD250-1 and 250-2)
15
6
10
DRIVE WINDING
SD250-1
SD250-2
SD250-3
SD250-4
Inductance (Min)1
1.5 mH
1.5 mH
1.5 mH
1.5 mH
Leakage inductance (Max)1
4.0
H
4.0
H
4.0
H
4.0
H
DCR
0.4
0.4
0.4
0.4
Volt-time product
375 V- sec
375 V- sec
375 V- sec
375 V- sec
SECONDARY WINDING(S)
Np/Ns (± 3%)
1 : 1
1 : 1.5
1 : 1 : 1
1 : 1.5 : 1.5
Cap., drive to sec. (Max)
50 pF
50 pF
50 pF
50 pF
DCR each section (Max)
.75
2.5
.75
2.5
1. Measured at 1 Vrms, 15.75 kHz
2. Operating temperature range –40° C to +85° C.
3. Electrical specifications at 25° C.
STANDARDVERSIONSPECIFICATIONS
SD250-1 and 250-2
SD250-3 and 250-4
10
7
10
1
1
6
6
9
5
5
Drive
Drive
Sec
Sec 1
Sec 2
Specifications subject to change without notice.
Document 130-1 Revised 9/14/00
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