EFD20 Datasheet, PDF (7/9 Pages) Sumida Corporation – General Power Transformer

Ferroxcube
EFD cores and accessories
EFD20/10/7
COIL FORMERS
General data
PARAMETER
Coil former material
Solder pad material
Maximum operating temperature
Resistance to soldering heat
Solderability
SPECIFICATION
phenolformaldehyde (PF), glass reinforced, flame retardant in accordance with
“UL94 V-0”; UL file number E41429 (M)
copper-tin alloy (CuSn), tin (Sn) plated
180 °C, “IEC 60085”, class H
“IEC 60068-2-20” , Part 2, Test Tb, method 1B, 350 °C, 3.5 s
“IEC 60068-2-20” , Part 2, Test Ta, method 1: 235 °C, 2 s
14.8 −0.2
10.4 ±0.2
9.2 +0.2
handbook, full pagewidth
10.2
max.
3.9 +0.2 5.3 −0.2
14.8 −0.2
13.3 min.
2
2.8
20
0.3
1
7.5
15
CBW500
21.7 max.
Dimensions in mm.
1.8
21
23.7 max.
2
3.75
Fig.5 EFD20/10/7 coil former (SMD); 10-solder pads.
Winding data and area product for EFD20/10/7 coil former (SMD) with 10-solder pads
NUMBER NUMBER
OF
OF SOLDER
SECTIONS
PADS
WINDING
AREA
(mm²)
1
10
27.2
MINIMUM
WINDING
WIDTH
(mm)
13.3
AVERAGE
LENGTH OF
TURN
(mm)
34.9
AREA
PRODUCT
Ae x Aw
(mm⁴)
843
TYPE NUMBER
CSHS-EFD20-1S-10P-Z
2008 Sep 01
7