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© Coilcraft, Inc. 2006
Specifications subject to change without notice.
Please check our website for latest information.
Base/Gate Driver Transformers
Document 130
Document 130
Revised 10/26/06
•
Lower cost than toroidal equivalents
•
Frequency range of 10 - 250 kHz and up
•
Industry standard pin centers
•
VDE, IEC, UL, CSA compliant
•
3750 Vrms isolation between windings
•
Constructed with UL approved Class 130°C insulation
system (UL File E83628)
SD250-1L
SD250-2L
SD250-3L
SD250-4L
Turns ratio (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
0.4
0.4
0.4
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
2.5
0.75
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.
5
6
10
1
Pri
(drive)
Pri
(drive)
5
1
Sec
9
10
Sec 2
6
7
Sec 1
SD250-1 and 250-2
SD250-3 and 250-4
1.10
27,94
0.395
10,03
1.10
27,94
0.044
1,12
max
max
max
0.15 ±0.030
3,81 ±0,762
0.032
0,813
0.950
24,13
max
dia ref
dia
Pins 7 and 9 are not present
on SD250-1 and SD250-2
15
6
7
9
10
0.62 ±0.015
15,75 ±0,38
0.75
19,05
Recommended
board layout
0.20
5,08
0.40
10,16
0.80
20,32
1
5
67
9
10
Weight:
15.6 – 16.8 g
Termination:
Tin-silver over tin over copper
Packaging:
49 per tray