Document
General Power Transformer < Pin Type: EI Series>
Type: EI-255B
◆ 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 38.0W(300kHz) ・Ideally used in Switching regulator, EL inverter and Power Factor Correction choke ・RoHS Compliance
4.5 4.5 4.5 4.54.5±0.2 5.5 5.5 5.5 5.5 ±0.3
www.DataSheet4U.com ◆ Dimensions (mm)
28.0 Max.
21.0 Max.
21.0 Max.
±0.5
3.0
φ0.8 -0.05
+0.1
15.5±0.3
◆ Schematics (Bottom)
1. For General Transformer
S ⑤ ④ S ③ S ② ① ⑥ ⑦ S ⑧ ⑨ S ⑩ ⑪
S S
2. For PFC choke
⑤ ④ ③ ② ① ⑥ S ⑦ S ⑧ S ⑨ ⑩ ⑪
“ S” is winding start
◆ Specification (For General Transformer)
Sample No. 1330-T110 Inductance (2-1) 1kHz/1V D.C.R. (2-1) (mΩ Max.) Hi-pot Winding-winding (50/60Hz) AC 1800Vrms/1min.
1.5mH ± 25%
2000
◆ Specification (For PFC choke)
Sample No. 1330-T097 Inductance (2-4) 1kHz/1V D.C.R. (2-4) (mΩ Max.) Rated Current (2-4) 5.7 A
35µH ± 20%
98
※ 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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