English
Language : 

SM74346 Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – T1/CEPT/ISDN Transformer
*RoHS VCEOARMVSAPIOILLINAASBNLTE
YYSWMW74346
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
SM74346E - T1/CEPT/ISDN Transformer
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
LL (16-14)
µH max. @ 100 kHz, 0.1 V,
short (1-3) ........................................0.6
LL (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
Packaging Specifications
Tape & Reel..........................700 pcs./reel
Product Dimensions
12.83
(.505)
MAX.
(9.3.5785) MAX.
16
9
SM74346
(DATE)
1
8
7.10
(.280)
MAX.
1.27
(.050)
8.90
(.350)
(6.2.2425) MAX.
0.46 ± 0.05
(.018 ± .002)
16 PLCS.
0.10
(.004)
16 SURFACES
0.25
(.010)
0°-8°
8.83
(.328)
8.89
(.350)
1.27
(.050)
1.91
(.075)
16X
0.74
(.029
±
±
0.03
.001)
Recommended PAD layout
Electrical Schematic
1
16
2
15
3
14
6
11
7
10
8
9
How to Order
SM74346E __
Model
Termination
Blank = Tin-lead
L = Tin only (lead free)
DIMENSIONS ARE:
MM
(INCHES)
TOLERANCE: ± 0.254
(.010)
02/06
*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.