oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
Features
■
Compact surface mount packaging
■
Contains both transmit and receive
Applications
■
Telecom
*R
transformer in a single package
■
Isolation voltage: 1500 Vrms
■
Lead free version available (see How to
Order)
■
Lead free versions are RoHS compliant*
PT74344 - T1/CEPT/ISDN-PRI Transformer
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 (Ω max.) ....................0.70 & 0.70
Sec DCR (Ω max.) ..................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 in part number designates
tape & reel packaging, e.g. PT74344E.
1.02
TYP.
(.040)
Product Dimensions
Electrical Schematic
1
16
PT74344
(DATE)
0.46
TYP.
(.018)
12.83
MAX.
(.505)
6.22
MAX.
(.245)
1.27
(.050)
0.38
TYP.
(.015)
2
3
6
14
11
7
10
8
9
8.89
(.350)
7.1
MAX.
(.280)
How to Order
PT74344E __
Model
Coplanarity:
(.004)
9.15
±
0.25
(.360
±
.010)
8.89
(.350)
1.27
(.050)
1.91
(.075)
.102
Termination
Blank = Tin-lead
L = Tin only (lead free)
8.38
(.330)
16X
0.71
TYP.
(.028)
Recommended PAD layout
DIMENSIONS ARE:
MM
(INCHES)
TOLERANCE: ±
0.25
(.010)
NOTE: DIMENSIONS ARE EXCLUSIVE OF SOLDER
03/05
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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