EFD20 Datasheet, PDF (6/9 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
liquid crystal polymer (LCP), glass reinforced, flame retardant in accordance with
“UL94 V-0”; UL file number E83005 (M)
copper-tin alloy (CuSn), tin (Sn) plated
155 °C, “IEC 60085”, class F
“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
0
−0.2
10.3
0
−0.15
9.2
+0.15
0
9.5
max.
3.9
+0.1
0
5
0
−0.1
14.8
0
−0.2
(13.5 min.)
2
2.8
0.3 20
0.3
1
7.5 ±0.05
15 ±0.05
21.7 max.
1.8
21
23.7 max.
2
3.75
Dimensions in mm.
Fig.4 EFD20/10/7 coil former (SMD); 10-solder pads.
CBW270
Winding data and area product for EFD20/10/7 coil former (SMD) with 10-solder pads
NUMBER OF
SECTIONS
1
WINDING
AREA
(mm²)
27.7
MINIMUM
WINDING
WIDTH
(mm)
13.5
AVERAGE
LENGTH OF
TURN
(mm)
34.1
AREA
PRODUCT
Ae x Aw
(mm⁴)
859
TYPE NUMBER
CPHS-EFD20-1S-10P
2008 Sep 01
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