Ferroxcube
Frame and Bar cores and accessories
COIL FORMERS
General data
PARAMETER
Coil former material
Pin material
Maximum operating temperature
Resistance to soldering heat
Solderability
SPECIFICATION
FRM21/4/12
liquid crystal polymer (LCP), glass-reinforced, flame retardant in accordance with
“UL 94V-0”;
UL file number E54705(M)
copper-tin alloy (CuSn), tin-lead alloy (SnPb) 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
15.9
1.3
handbook, full pagewidth
8.2
0.7
5.75
2.75
4.6
2
CBW547
0.4
27.7
±0.2
29.15
±0.2
24.7
±0.15
0.55
2
11.7
Dimensions in mm.
Fig.3 SMD coil former for FRM21/4/12.
Winding data
NUMBER OF
SECTIONS
7
NUMBER OF
SOLDER PADS
8
WINDING
AREA
(mm
2
)
2.3 + 6
×
1.35
WINDING
WIDTH
(mm)
2.6 + 6
×
1.5
AVERAGE
LENGTH OF
TURN
(mm)
21
TYPE NUMBER
CPHS-FRM21/12-7S-8P
FERROXCUBE [ FERROXCUBE INTERNATIONAL HOLDING B.V. ]
