T1/CEPT/ISDN-PRI Dual Transformer
oH V SC AV ER OM AI SIO PL LA N IA BL S NT E
Features
■ Surface mount
Applications
■ Telecom
SM 741 YYW W 39
*R
■ D...
Description
oH V SC AV ER OM AI SIO PL LA N IA BL S NT E
Features
■ Surface mount
Applications
■ Telecom
SM 741 YYW W 39
*R
■ Dual transformer for transmit and receive ■ 1500 VAC HIPOT ■ Lead free version available (see How to
Order)
■ Lead free versions are RoHS compliant*
SM74139 - T1/CEPT/ISDN-PRI Dual Transformer
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 *CT : center tap
6.22 MAX. (.245)
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Product Dimensions
12.82 MAX. (.505)
Electrical Schematic
CORE A
1 16
16 7.11 MAX. (.280) 1 1.27 TYP. (.050)
9
SM74139
(DATECODE)
9.52 MAX. (.375) 8 .457 ± .05 (.018 ± .002)
2
15
3
14
CORE B
1.01 (.040)
6 11
7
10
Packaging Specifications Tape & Reel* ........................700 pcs./reel *“E” suffix at end of part number designates tape & reel packaging, e.g. SM74139E.
8 9
DIMENSIONS ARE:
MM (INCHES)
How to Order
0.254 TOLERANCE: ± (.010)
Model Termination Blank = Tin-lead L = Tin...
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