Features
■ Fully encapsulated
■ Low profi le
■ Low insertion loss
■ Frequency range 10 kHz to 500 MHz
■ Impedance levels from 12.5 Ω to 800 Ω
(nominal 50 Ω)
■ 6 pin DIP and SMD
■ RoHS compliant**
RF2, RF3, RF4 Series - Wideband Transformers
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
Electrical Specifi cations @ 25 °C
*RoHS COMPLIANT
4-4-1J
Part Number Ratio
Impedance
Frequency
MHz
Insertion Loss
Schematic
Type D Type W Type J 3 dB
MHz
2 dB
MHz
1 dB
MHz
2-1-1D_ 2-1-1W_ 2-1-1J_ 1 .050-200 .050-200 .080-150 .20-80
RF2 Series
2-1-6D_ 2-1-6W_ 2-1-6J_ 1 .003-300 .003-300 .010-150 .02-50
2-2-1D_ 2-2-1W_ 2-2-1J_ 2 .070-200 .070-200 .100-100 .50-50
2-2.5-6D_ 2-2.5-6W_ 2-2.5-6J_ 2.5 .010-100 .010-100 .020-50 .05-20
2-3-1D_ 2-3-1W_ 2-3-1J_ 3 .050-250 .050-250 .100-200 .50-70
2-4-1D_ 2-4-1W_ 2-4-1J_ 4 .200-350 .200-350 .350-300 2-100
2-4-6D_ 2-4-6W_ 2-4-6J_ 4 .020-250 .020-250 .050-150 .10-100
2-5-1D_ 2-5-1W_ 2-5-1J_ 5 .300-300 .300-300 .600-200 5-100
2-8-1D_ 2-8-1W_ 2-8-1J_ 8 .030-140 .030-140 .100-90 1-60
2-13-1D_ 2-13-1W_ 2-13-1J_ 13 .300-120 .300-120 .700-80 5-20
2-16-6D_ 2-16-6W_ 2-16-6J_ 16 .030-75 .030-75 .060-30 10-20
3-1-1D_ 3-1-1W_ 3-1-1J_ 1 .150-400 .150-400 .350-200 2-50
RF3 Series
3-1-6D_ 3-1-6W_ 3-1-6J_ 1 .010-150 .010-150 .020-100 .05-50
3-1.5-1D_ 3-1.5-1W_ 3-1.5-1J_ 1.5 .100-300 .100-300 .200-150 .50-80
3-1.5-6D_ 3-1.5-6W_ 3-1.5-6J_ 1.5 .020-100 .020-100 .050-50 .10-25
3-2.5-6D_ 3-2.5-6W_ 3-2.5-6J_ 2.5 .010-100 .010-100 .020-50 .05-20
3-4-6D_ 3-4-6W_ 3-4-6J_ 4 .020-200 .020-200 .050-150 .10-100
3-9-1D_ 3-9-1W_ 3-9-1J_ 9 .150-200 .150-200 .300-150 2-40
3-16-1D_ 3-16-1W_ 3-16-1J_ 16 .300-120 .300-120 .700-80 .50-20
3-36-1D_ 3-36-1W_ 3-36-1J_ 36 .030-20 .030-20 .050-10 .10-5
4-1-6D_ 4-1-6W_ 4-1-6J_ 1 .004-500 .004-500 .020-200 .10-50 RF4 Series
4-1.5-1D_ 4-1.5-1W_ 4-1.5-1J_ 1.5 .075-500 .075-500 .200-100 .10-50
4-2.5-6D_ 4-2.5-6W_ 4-2.5-6J_ 2.5 .010-50 .010-50 .025-25 .05-10
4-4-1D_ 4-4-1W_ 4-4-1J_ 4 .050-200 .050-200 .200-50 1-30
4-25-1D_ 4-25-1W_ 4-25-1J_ 25 .020-30 .020-30 .050-20 .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
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
RF2, RF3, RF4 Series - Wideband Transformers
Product Dimensions
Type D
4
321
56
6.85
(.270)MAX
7.62
(.300)
6.35
(.249) MAX
0.38
(.015)
2.54
(.100) 0.45
(.018)
5.08
(.200)
3.81
(.150)MIN
TYP.
TYP.
8.38
(.330)TYP.
Type J
4
321
56
8.38
(.330)
0.38
(.015)
0.25
(.010)
6.35
(.250) MAX
TYP
TYP
1.14 - 1.27
(.045 - .050)
1.14 - 1.27
(.045 - .050)
Type W
4
321
5
6
10.92
(.430)
6.35
(.250)
0.38
(.015)
1.14 - 1.27
(.045 - .050)
1.90
(.075)
TYP
TYP
0.25
(.010)
1.14 - 1.27
(.045 - .050)
1.90
(.075)
DIMENSIONS: MM
(INCHES)
Typical Frequency Response
2-4-1 3 dB Bandwidth 0.200-350 MHz
Frequency (MHz)
dB
2-3-1 3 dB Bandwidth 0.050-250 MHz
Frequency (MHz)
dB
3-1-1 3 dB Bandwidth 0.150-400 MHz
Frequency (MHz)
dB
How To Order
x - x - x x __ __ L
Model
Impedance Ratio
(see “Ratio Impedance”)
Type Number
Termination Type
(see “Product Dimensions”)
D = Through-hole
W = Surface Mount (Gull-Wing)
J = Surface Mount (“J” Leads)
Impedance Ratio
P = Ratio: Primary to Secondary (R : 1)
Blank = Ratio: Secondary to Primary (R : 1)
Where “R” is the Ratio Impedance
in Electrical Specifi cations chart
Packaging
E = Tape and Reel (Types J and W only)
Blank = Tubes (Types D and W only)
Termination Material
L = 97Sn/2.5Cu/0.5Ag (RoHS Compliant)
Packaging
Tape and Reel (Types J and W only)
....................................... 700 pcs./reel
Tubes (Types D and W only)
........................................68 pcs./tube
1.50
(.059)DIA.
1.50
(.059)DIA. MIN.
8.2
(.323)
5 °
4.9
(.193)
8.9
(.350)
2.00
(.079)
6.7
(.264)
7.1
(.280)
6.1
(.240)
6.6
(.260)
4.9
(.193)
1.75
(.069)
11.2
(.441)
16.00 ± 0.30
(.630 ± .012)
7.9
(.311)
7.50
(.295)
4.00
(.157)
12.00
(.472)
12.00
(.472)
1.50
(.059)DIA.
1.50
(.059)DIA. MIN.
2.00
(.079)
1.75
(.069)
16.00 ± 0.30
(.630 ± .012)
7.50
(.295)
4.00
(.157)
5 °
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
RF2, RF3, RF4 Series - Wideband Transformers
REV. 05/11
Packaging Dimensions
Tape Dimensions for “W” Type
DIMENSIONS: MM
(INCHES)
24
(0.95)
28.4
(1.12)
2.0 ± 0.5
(.079 ± .020)
50.0
(1.969)
330
(12.99)DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
EMBOSSED
CAVITY
0.10
(.004)
THICKNESS
MAX.
Tape Dimensions for “J” Type
