Features
s
Fully encapsulated
s
Low profile
s
Low insertion loss
s
Frequency range 10 kHz to 500 MHz
s
Impedance levels from 12.5
Ω
to 800
Ω
(nominal 50
Ω)
s
6 pin DIP and SMD
Electrical Specifications @ 25°C
Type D
2-1-1D
2-1-6D
2-2-1D
2-2.5-6D
2-3-1D
2-4-1D
2-4-6D
2-5-1D
2-8-1D
2-13-1D
2-16-6D
3-1-1D
3-1-6D
3-1.5-1D
3-1.5-6D
3-2.5-6D
3-4-6D
3-9-1D
3-16-1D
3-36-1D
4-1-6D
4-1.5-1D
4-2.5-6D
4-4-1D
4-25-1D
Part Number
Type W
2-1-1W
2-1-6W
2-2-1W
2-2.5-6W
2-3-1W
2-4-1W
2-4-6W
2-5-1W
2-8-1W
2-13-1W
2-16-6W
3-1-1W
3-1-6W
3-1.5-1W
3-1.5-6W
3-2.5-6W
3-4-6W
3-9-1W
3-16-1W
3-36-1W
4-1-6W
4-1.5-1W
4-2.5-6W
4-4-1W
4-25-1W
Note:
RF2 and RF3 are standard units. RF4
only on request.
Specifications are subject to change without notice.
-1J
4-4
Type J
2-1-1J
2-1-6J
2-2-1J
2-2.5-6J
2-3-1J
2-4-1J
2-4-6J
2-5-1J
2-8-1J
2-13-1J
2-16-6J
3-1-1J
3-1-6J
3-1.5-1J
3-1.5-6J
3-2.5-6J
3-4-6J
3-9-1J
3-16-1J
3-36-1J
4-1-6J
4-1.5-1J
4-2.5-6J
4-4-1J
4-25-1J
RF2, RF3, RF4 Series - Wideband Transformers
Ratio
Frequency
Impedance
MHz
1
1
2
2.5
3
4
4
5
8
13
16
1
1
1.5
1.5
2.5
4
9
16
36
1
1.5
2.5
4
25
.050-200
.003-300
.070-200
.010-100
.050-250
.200-350
.020-250
.300-300
.030-140
.300-120
.030-75
.150-400
.010-150
.100-300
.020-100
.010-100
.020-200
.150-200
.300-120
.030-20
.004-500
.075-500
.010-50
.050-200
.020-30
3dB
MHz
.050-200
.003-300
.070-200
.010-100
.050-250
.200-350
.020-250
.300-300
.030-140
.300-120
.030-75
.150-400
.010-150
.100-300
.020-100
.010-100
.020-200
.150-200
.300-120
.030-20
.004-500
.075-500
.010-50
.050-200
.020-30
Insertion Loss
2dB
MHz
.080-150
.010-150
.100-100
.020-50
.100-200
.350-300
.050-150
.600-200
.100-90
.700-80
.060-30
.350-200
.020-100
.200-150
.050-50
.020-50
.050-150
.300-150
.700-80
.050-10
.020-200
.200-100
.025-25
.200-50
.050-20
1dB
MHz
.20-80
.02-50
.50-50
.05-20
.50-70
2-100
.10-100
5-100
1-60
5-20
10-20
2-50
.05-50
.50-80
.10-25
.05-20
.10-100
2-40
.50-20
.10-5
.10-50
.10-50
.05-10
1-30
.10-10
Schematic
RF2 Series
RF3 Series
RF4 Series
RF2, RF3, RF4 Series - Wideband Transformers
Product Dimensions
Type D
1
2
3
Typical Frequency Response
2-4-1
3 dB Bandwidth 0.200-350 MHz
6.85 MAX
(.270)
6
5
4
7.62
(.300)
6.35 MAX
(.249)
3.81 MIN
(.150)
2.54
(.100)
5.08 TYP.
(.200)
0.45 TYP.
(.018)
0.38
(.015)
dB
Frequency (MHz)
8.38 TYP.
(.330)
Type J
2-3-1
3 dB Bandwidth 0.050-250 MHz
6.35
MAX
(.250)
1
2
3
1.14 - 1.27
(.045 - .050)
8.38
(.330)
6
5
4
1.14 - 1.27
(.045 - .050)
0.38
TYP
(.015)
dB
0.25
TYP
(.010)
Frequency (MHz)
Type W
3-1-1
3 dB Bandwidth 0.150-400 MHz
6.35
(.250)
0.25
TYP
(.010)
1.14 - 1.27
(.045 - .050)
1.90
(.075)
10.92
(.430)
1.90
(.075)
1.14 - 1.27
(.045 - .050)
6
5
4
0.38
TYP
(.015)
dB
1
2
3
Frequency (MHz)
DIMENSIONS ARE:
METRIC
(INCHES)
Specifications are subject to change without notice.
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