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EI-255B Dataheets PDF



Part Number EI-255B
Manufacturers Sumida Corporation
Logo Sumida Corporation
Description General Power Transformer
Datasheet EI-255B DatasheetEI-255B Datasheet (PDF)

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 ◆ Sche.

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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 1/1 .


EI-255 EI-255B EI-25S


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