
SM74346E - T1/CEPT/ISDN Transformer
Features
■
Low height of 6.22 mm
■
HIPOT of 1500 VAC
■
Dual transformer for transmit and receive
■
Lead free version available (see How to
Order)
■
Lead free versions are RoHS compliant*
Applications
■
Telecom
Electrical Specifications @ 25
°
C
OCL (16-14)
mH min. @ 10 kHz, 0.1 V ................1.2
OCL (6-8)
mH min. @ 10 kHz, 0.1 V................1.2
L
L
(16-14)
μH max. @ 100 kHz, 0.1 V,
short (1-3) ........................................0.6
L
L
(6-8)
μH max. @ 100 kHz, 0.1 V,
short (11-9) ......................................0.6
Cww (16-1)
pF max. @ 100 kHz, 0.1 V ................30
Cww (6-11)
pF max. @ 100 kHz, 0.1 V ................30
DCR (16-14) ohm max.........................0.7
DCR (6-8) ohm max.............................0.7
DCR (1-3) ohm max.............................1.4
DCR (11-9) ohm max...........................1.4
Turns Ratio
(16-14) : (1-3)..............1CT : 2CT ±5 %
(6-8) : (11-19)..............1CT : 2CT ±5 %
Polarity (1, 16, 6, 11) ............Same phase
HIPOT
Between Windings................1500 VAC
Between Transformers..........1500 VAC
Operating Temperature (°C) ........0 to +70
*CT : center tap
Product Dimensions
Electrical Schematic
SM74346
(DATE)
1
12.83
(.505)
16
9
8
MAX.
7.10
(.280)
0.10
(.004)
MAX.
9.58
(.375)
1.27
(.050)
0.46
±
0.05
(.018
±
.002)
8.90
(.350)
MAX.
6.22
(.245)
MAX.
16 PLCS.
16 SURFACES
DIMENSIONS ARE:
MM
(INCHES)
TOLERANCE: ±
0.254
(.010)
1
3
16
14
6
8
11
10
15
2
7
9
Packaging Specifications
Tape & Reel..........................700 pcs./reel
0.25
(.010)
0
°
- 8
°
0.74
±
0.03
(.029
±
.001)
16X
Recommended PAD layout
8.89
(.350)
8.83
(.328)
1.27
(.050)
1.91
(.075)
SM44
*RHAVALABE
VRSONS
How to Order
SM74346E __
Model
Termination
Blank = Tin-lead
L = Tin only (lead free)
*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.
02/06