2786A Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – MODEM MAGNETICS PCMCIA V.90 Transformers

MODEM MAGNETICS
PCMCIA V.90 Transformers
TM00404
• Designed to match a 600Ω line to a 290Ω load while
providing isolation and balance in PCMCIA Type II
V.90 modem applications
• Approved by UL and CSA
• Minimum interwinding breakdown voltage of 1000 Vrms
• Qualified per Bellcore TR-TSY-000357-1
ELECTRICAL SPECIFICATIONS AT 25° C
Part
Number
Turns Ratio
± 2%
Insertion
Loss
dB
@ 1 kHz
Return Loss
dB
Frequency
Response
dB
300 Hz - 3500 Hz 200 Hz - 5 kHz
DCR
Ω
max
Pri
Sec
2786A
1:1
< 2.9
> 30
< 0.1
165
200
2786A3
1:1
< 2.9
> 30
< 0.1
165
200
2786A5
1:1
< 2.9
> 30
< 0.1
165
200
Harmonic
Distortion
dB
-10 dBm,
600 Hz
Longitudinal
Balance
dB
300 Hz - 3500 Hz
> 85
> 60
> 85
> 60
> 85
> 60
SCHEMATIC
2786A
2786A3
2786A5
1
3
Primary
6
4
Secondary
TYPICAL SPICE TRANSMISSION MODEL
145
1.4 mH
175
1
20 pF
25 k
3.0 H
3
6
20 pF
4
©2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T4-9