SM74139

T
PL
IA
N
OM
Features
Applications
n Surface mount
n Telecom
*R
oH
S
C
n Dual transformer for transmit and receive
n 1500 VAC HIPOT
Model SM74139EL is obsolete and not
recommended for new designs.
n RoHS compliant*
LE
AD
F
RE
E
SM74139L - T1/CEPT/ISDN-PRI Dual Transformer
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR IA E
NT
*
*CT : center tap
*”E” suffix before “L” in part number
designates tape & reel packaging, e.g.
SM74139EL.
Model
12.82
MAX.
(.505)
16
2
15
3
12.82
MAX.
14
(.505)
7.11
MAX.
(.280)
16
9
SM74139L
1
(DATECODE)
COREB
6
7.11
MAX.
(.280)
16
1
8
1.27
TYP.
(.050)
9
SM74139L
11
(DATECODE)
10
9
9.52
MAX.
(.375)
1.01
(.040)
8
.457±.05
(.018±.002)
6.22
MAX.
(.245)
MM
(INCHES)
0.254
(.010)
DIMENSIONS:
TOLERANCE: ±
SM74139E L
Termination
L = Tin only (RoHS Compliant)
9.52
MAX.
(.375)
8
.457±.05
(.018±.002)
1.27
TYP.
(.050)
E
T
E
L
O
S
B
O
Tape & Reel*...................... 700 pcs./reel
How To Order
COREA
1
7
Packaging Specifications
Product Dimensions
Electrical Schematic
Electrical Specifications @ 25 °C
Primary Pins
Core A.............................................1-3
Core B.............................................6-8
Ratio (±2 %)
Core A & B...................... 1CT : 1.15CT
OCL (mH) min.
Core A & B.......................................1.2
Leakage Inductance (µH) max.
Core A & B.....................................0.60
Cww (pF) max.
Core A & B........................................30
DCR of primary (Ω) max.
Core A & B.....................................0.70
DCR of secondary (Ω) max.
Core A & B.....................................0.75
Operating Temperature (°C).......0 to +70
REV. 01/16
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
6.22
MAX
(.245)