These series are obsolete and not
recommended for new designs.
Features
■ Fully encapsulated
■ Low profile
4-4-1J
■ Low insertion loss
■ Frequency range 10 kHz to 500 MHz
■ RoHS compliant**
■ Impedance levels from 12.5 Ω to 800 Ω
(nominal 50 Ω)
■ 6 pin DIP and SMD
RF2, RF3, RF4 Series - Wideband Transformers
Electrical Specifications @ 25 °C
Part Number
Insertion Loss
Frequency
Ratio
Schematic
RF2 Series
3 dB
MHz
2 dB
MHz
1 dB
MHz
Impedance
MHz
Type D
Type W
Type J
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_
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_
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_
1
1
2
2.5
3
4
4
5
8
.050-200
.030-300
.070-200
.010-100
.050-250
.200-350
.020-250
.300-300
.030-140
.300-120
.030-75
.050-200
.030-300
.070-200
.010-100
.050-250
.200-350
.020-250
.300-300
.030-140
.300-120
.030-75
.080-150
.100-150
.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
.200-200
.200-100
.025-25
.200-50
.050-20
.20-80
.20-50
.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
13
16
1
.150-400
.010-150
.100-300
.020-100
.010-100
.020-200
.150-200
.300-120
.030-20
.150-400
.010-150
.100-300
.020-100
.010-100
.020-200
.150-200
.300-120
.030-20
1
RF3 Series
RF4 Series
1.5
1.5
2.5
4
9
16
36
1
1.5
2.5
4
.50-20
.10-5
1-50
.10-50
.05-10
1-30
.040-500
.075-500
.010-50
.040-500
.075-500
.010-50
.050-200
.020-30
.050-200
.020-30
25
.10-10
Note
RF2 and RF3 are standard units. RF4 only on request.
Terminal Material: 97Sn/2.5Cu/0.5Ag
Operating Temperature Range: 0 °C to +70 °C
Storage Temperature Range: -40 °C to +85 °C
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.