defining a degree of excellence
TOKEN RING TRANSFORMERS
IMPEDANCE MATCHING AND ISOLATION TRANSFORMERS
960047A
• Design for use in IEEE 802.5 token ring applications, 4
or 16 Mbps applications
• Single or dual designs, through-hole or surface mount
packaging
• Impedance match or isolation transformer applications
• For use with either 150 ohm STP or 100 ohm UTP media
• 2000 Vrms isolation
ELECTRICALS AT 25ºC
Part No.
A553-1506-6E
A553-1506-6K
A553-5006-JE
A553-5006-JK
A553-5006-KE
A553-5006-KK
S553-1506-6F
S553-5006-JF
S553-5006-KF
S553-5999-10
S553-5999-11
S553-5999-12
Turns
Ratio
1:1:0.816:0.816
1:1:0.816:0.816
1:1:1:1
1:1:1:1
1:1:2:2
1:1:2:2
1:1:0.816:0.816
1:1:1:1
1:1:2:2
1:1:2.45:2.45
1:1:1.22:1.22
1:1:2.44:2.44
Inductance
OCL (µH)
Typical
125
125
125
125
125
125
100
125
125 +/- 20%
125 +/- 20%
250
125
Coupling
Capacitance
C
WW
(pF) Max
10
10
10
10
10
10
10
15
10
10
20
20
Leakage
Inductance
L
L
(µH) Max
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.50
0.50
Pri/Sec
(ohms)
Max
0.40/0.40
0.40/0.40
0.40/0.40
0.40/0.40
0.40/0.80
0.40/0.80
0.20/0.20
0.20/0.20
0.20/0.40
0.40/0.85
0.40/0.50
0.40/0.98
Schematic
A
B
A
B
A
B
A
A
A
A
A
A
Package
Style
Dual
Single
Dual
Single
Dual
Single
Dual
Dual
Dual
Dual
Dual
Dual
SCHEMATICS
A
B
MECHANICALS
Single
Dual
Corporate Office
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302-4496
Tel: 201-432-0463
Fax: 201-432-9542
E-Mail: BelFuse@belfuse.com
Internet: http://www.belfuse.com
Far East Office
Bel Fuse Ltd.
8F/8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel: 852-2328-5515
Fax: 852-2352-3706
European Office
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Preston PR1 8UD
Lancashire, U.K.
Tel: 44-1772-556601
Fax: 44-1772-888366
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