Switch mode power supply transformers format E25 & ETD, 15 W switch mode
From Myrra the E25 and ETD Series flyback transformers form the core of a switch mode power supply in association with a specialised circuit (VIPer, TOPSwitch, CoolSet, or control circuit + Mosfet.) Constructed with reinforced insulation, the E25 and ETD Series of flyback transformers exclusively use UL94-V0 listed materials.
Features and Benefits:
Primary / Secondary Insulation ≥ 4000V
Primary / Auxiliary Insulation ≥ 1500V
Creepage distance Primary / Secondary ≥ 8mm
Secondaries can be connected in series or in parallel.
Materials comply with UL94-V0
ref. Myrra
Format
Dimensions (mm)
Inductance
Associated integrated circuits
L
W
H
74030
EE25
27
27
21
750 μH
TOP223, 224, VIPer50, TDA16832
74040
ETD29
37
37
27
500 μH
TOP225, VIPer50, TDA16834
74040
ETD34
40
43
34
500 μH
TOP226, VIPer100, TDA16836
74060
ETD39
46
49
38
440 μH
TOP227, VIPer100, TDA16836
74070
ETD44
51
52
40.5
300 μH
TDA16837, KA2S0965
Standards
IEC 950, IEC 61558 for reinforced insulation
Open Frame - Laminated
PCB mounting mains transformers with a single 230Va.c. or twin 115Va.c. 50/60Hz primary winding. Independent secondary windings may be connected in series or parallel to give a wide range of output voltage and current options.
Double section metric bobbin construction
Full varnish impregnation
Technical specifications
VA
regulation
dimensions (mm)
pins (mm)
weight
nominal
typ. (%)
L
L
h*
L
Ø
(kg)
3
20
38
35
30
5
1
0.14
6
25
43
36
33
5
1
0.18
12
12
54
45
41
5
1
0.4
* above the PCB