Transformer. 74139 Datasheet


74139 Datasheet PDF


74139


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

■ 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)
www.DataSheet4U.com

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 ...



74139
YYSWMW74139
Features
Surface mount
Dual transformer for transmit and receive
1500 VAC HIPOT
Lead free version available (see How to
Order)
Lead free versions are RoHS compliant*
Applications
Telecom
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 () max.
Core A & B ....................................0.70
DCR of secondary () max.
Core A & B ....................................0.75
Operating Temperature (°C) ........0 to +70
*CT : center tap
Packaging Specifications
www.DataSheet4U.com
Tape & Reel* ........................700 pcs./reel
*“E” suffix at end of part number
designates tape & reel packaging, e.g.
SM74139E.
Product Dimensions
12.82
(.505)
MAX.
7.11
(.280)
MAX.
16 9
SM74139
(DATECODE)
18
9.52
(.375)
MAX.
1.27
(.050)
TYP.
.457 ± .05
(.018 ± .002)
1.01
(.040)
(6.2.2425)MAX.
DIMENSIONS ARE:
MM
(INCHES)
TOLERANCE: ± 0.254
(.010)
Electrical Schematic
CORE A
1
16
2 15
3 14
CORE B
6 11
7 10
89
How to Order
SM74139E __
Model
Termination
Blank = Tin-lead
L = Tin only (lead free)
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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