TYPE
B4F Balun Transformers for Surface Mounting
B5FL
TYPE B5FL: Surface Mount
B5FL
5.5Max.
2.7
3.6Max.
3.8
6.9Max.
6.9Max.
3.0
4.4Max.
3.2Max.
5-0.7
3.8
2
5-0.6
TYPE B4F: Surface Mount
B4F
Meeting Your Needs
4.0
2
(Unit: mm)
(Unit: mm)
Features
Applications
• Pair wire coil for high stability.
• Base pin terminal treated, allowing mounting
‘as is’ on a PCB.
• Double balance mixers, broad-band transformers,
impedance transformers, etc.
STANDARD TRANSFORMERS SELECTION GUIDE
TYPE B5FL
TYPE B4F
Operating
TOKO
Number
Frequency
Part
of Turns
Range
Number per Winding
(MHz)
Insertion
Loss
(dB)
Fig.
3
3
3
3
3
1
1
1
1
1
Double Balanced Mixer
617DB-1007
2
617DB-1009
3
617DB-1006
3
617DB-1010
4
617DB-1018
5
25~2000
6~2000
150~2300
3.5~2000
2~2000
Frequency Mixer
617PT-1025
1
617PT-1019
2
617PT-1026
3
—
8~750
3.5~700
3
3
Balun Transformer
617DB-1021 11/2
617DB-1022 21/2
617DB-1023 31/2
617DB-1024 41/2
20~750
4.5~3300
2.3~2700
1.5~2400
3
3
3
3
1300~1700
617DS-1076
3
800~1000
Fig.
3
3
3
3
1
1
1
1
—
8~550
3.5~500
2~370
—
500~850
240~500
85~380
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
Balun Transformer
616DB-1048 11/2
616DB-1049 21/2
616DB-1050 31/2
616DB-1051 41/2
616DB-1078 51/2
5.5~850
2.5~2000
1.2~1700
0.8~1400
0.6~1300
3
3
3
3
3
3
3
3
3
3
Balun Transformer
616DB-1053 11/2
616DB-1017 21/2
616DB-1054 31/2
IN to OUT-1,2 5
4.5dB max.
IN to OUT-2
(ISOLATION) 5
15dB min.
30~850
6.5~1000
3.5~1600
2.5~1500
Frequency Mixer
616PT-1027
616PT-1028
616PT-1029
616PT-1030
616PT-1037
616PT-1038
616PT-1039
616PT-1040
3
3
3
3
2
Insertion
Loss
(dB)
Double Balanced Mixer
616DB-1003
2
616DB-1004
3
616DB-1007
4
616DB-1008
5
2
2
2
Distributor
617DS-1079
Operating
TOKO
Number
Frequency
Part
of Turns
Range
Number per Winding
(MHz)
160~2200
55~1700
30~1400
3
3
3
4
4
4
1
2
3
4
1
2
3
4
Pin Connections
3
4
3
2
1
2
6
Double balanced
Fig. 1
1.800.PIK.TOKO
4
1
4
2
6
Mixer transformer
Fig. 2
www.tokoam.com
3
1
4
6
1
3
4
2
2
Balun transformer
Fig. 3
1.847.297.0070
3
6
Balun transformer
Fig. 4
1
6
Distributor
Fig. 5
R-LOG0402A
