EFD20 Datasheet, PDF (4/9 Pages) Sumida Corporation – General Power Transformer

Ferroxcube
EFD cores and accessories
EFD20/10/7
COIL FORMERS
General data
PARAMETER
Coil former material
Pin 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 E167521(M)
copper-tin alloy (CuSn), Ni flash, tin (Sn) plated, see note 1
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
handbook, full pagewidth
14.8 max
10.6
0
−0.15
9.23
+0.15
0
14.8
0
−0.2
5
13.2 min
10 max ^{9.5 max}
3.93
+0.1
0
5.3
0
−0.1
17.5
5.2 ±0.3
1.6
14.1 ±0.1
Dimensions in mm.
5 ±0.1
15 ±0.1
20.2 max.
∅ 0.6
17.5 ±0.1
21.2 max.
Fig.2 EFD20/10/7 coil former; 8-pins.
1.3
+0.15
0
CBW087
Winding data and area product for EFD20 coil former with 8-pins
NUMBER OF
SECTIONS
1
WINDING
AREA
(mm²)
26.4
MINIMUM
WINDING
WIDTH
(mm)
13.2
AVERAGE
LENGTH OF
TURN
(mm)
36.5
Note
1. Also available with post-inserted pins.
AREA
PRODUCT
Ae x Aw
(mm⁴)
818
TYPE NUMBER
CSH-EFD20-1S-8P⁽¹⁾
2008 Sep 01
4