PT74344 - T1/CEPT/ISDN-PRI Transformer
Specifications are subject to change without notice.
Features
■Compact surface mount packaging
■Contains both transmit and receive
transformer in a single package
■Isolation voltage: 1500 Vrms
Applications
■Telecom
Product Dimensions Electrical Schematic
PT74344
(DATE)
0.46
(.018)
1.27
(.050) 8.89
(.350)
9.15 ± 0.25
(.360 ± .010)
8.89
(.350)
1.27
(.050)
0.71
(.028)
16X
Recommended PAD layout
Coplanarity:
TYP.
8.38
(.330)
1.91
(.075)
TYP.
0.38
(.015)TYP.
1.02
(.040)TYP.
12.83
(.505) MAX.
7.1
(.280)
.102
(.004)
MAX.
6.22
(.245) MAX.
1
2
3
16
14
6
7
8
11
10
9
NOTE: DIMENSIONS ARE EXCLUSIVE OF SOLDER
DIMENSIONS ARE: MM
(INCHES)
TOLERANCE: ± 0.25
(.010)
Electrical Specifications @ 25 °C
Turns Ratio ±5 %
............................1:1.15CT & 1CT:2CT
Primary Inductance (mH min.)
..........................................1.20 & 1.20
Primary Leakage Inductance (µH max.)
..........................................0.60 & 0.60
Cww (pF max.) ............................30 & 30
Pri DCR (Ωmax.)....................0.70 & 0.70
Sec DCR (Ωmax.)..................0.70 & 1.00
Primary Pins ............................16-14, 6-8
Operating Temperature (°C) ........0 to +70
*CT : center tap
Packaging Specifications
Tape and Reel* ....................700 pcs./reel
*“E” suffix at end of part number
designates tape & reel packaging, e.g.
PT74344E.
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04/03
