HOME > Product Category > Electrical Transformer > Switching Mode Transformer > Power ER Type Transformer

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Features:

  • High flux density, permeability, low loss ferrite core
  • High efficiency and low heat generation
  • Designed to meet safety standards, such as UL, IEC
  • Low cost

Applications:

  • VCRS, Copy machines, Audio equipment, Game machines
  • TV sets, Microcomputer equipment
  • Communications control equipment
  • Printers, Terminals, etc.

Electrical Characteristics:

  • Operating Temperature range: -10 to +100
  • Storage temperature:-40 to +110
  • Switching frequency: 15 KHz to 200 KHz
  • Withstanding voltage: 1500/3750Vac for 1 minute between primary & secondary
  • Insulation resistance: 500Vdc 100M min. between primary & secondary
  • Heat resistance class: E (120), B(130), F(155), H(180)

Part number
Maximum external dimensions(mm)
Rated output power(W)max.
Core sectional area(mm2)
No. of terminal
W
D
H
25KHz
50KHz
100KHz
ER-25.5
25.0
20.0
21.0
25.0
46.0
79.0
44.8
8.0
ER-28
29.0
23.0
29.0
55.0
99.0
148.0
82.1
12.0
ER-28L
29.0
23.0
35.0
62.0
110.0
170.0
81.4
12.0
ER-35
36.0
29.0
44.0
70.0
185.0
278.0
107.0
12.0
ER-39
41.0
30.0
46.0
159.0
249.0
363.0
149.0
12.0
ER-42
43.0
37.0
46.0
172.0
274.0
382.0
194.0
14.0
ER-42/42/20
43.0
37.0
46.0
195.0
319.0
459.0
240.0
18.0

Special inquiries besides the above common used types can be met upon your requirement.