Sumida EI-25S General power transformer type: ei series> Datasheet

General Power Transformer <Pin Type: EI Series>
Type: EI-25S
◆ Product Description
・28.0×21.0mm Max.(L×W), 21.0mm Max. Height.
・Custom design is available.
◆ Feature
・Max. Operating frequency 300kHz. Max. Operating power 36.0W(300kHz)
・Ideally used in Switching regulator, EL inverter and Power Factor Correction choke.
・RoHS Compliance
20.0 MAX.
+
+
+
+
+
+
+
+
+1.0
-0.5
2.7
22.0 MAX.
5.0 5.0 5.0 ±0.3
27.0 MAX.
φ0.8±0.1
◆ Dimensions (mm)
12.5
◆ Schematics (Bottom)
1. For General Transformer
④
⑤
S
S ③
⑥
S
②
⑦
S ①
⑧
2. For PFC choke
⑤
④
“ S” is winding start
③
⑥ S
②
⑦
S ①
⑧
“ S” is winding start
◆ Specification (For General Transformer)
Sample No.
Inductance (1-2)
1kHz/1V
D.C.R. (1-2)
(Ω Max.)
Hi-pot
Winding-winding
(50/60Hz)
3370-T029
15.7mH ± 20%
3.5
AC 1500Vrms/1min.
◆ Specification (For PFC choke)
Sample No.
Inductance (6-8)
1kHz/1V
(mΩ Max.)
D.C.R. (6-8)
Rated Current
(6-8)
3370-T027
470μH ± 15%
370
1.5 A
※ Rated current: The DC current at which the inductance decreases to 90 % of it’s initial
value or when △t=40℃, whichever is lower(Ta=20℃).
Please refer to the sales offices on our website for a representative near you
www.sumida.com
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