SM75057 - E4/STM-1 Transformer
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Features
■Low height of 5.65 mm
■Operating temperature -40 °C to +85 °C
Applications
■Telecom
Electrical Specifications @ 25 °C
OCL (1-3)
mH min. @ 10 kHz, 0.1 V ................1.2
OCL (6-8)
mH min. @ 10 kHz, 0.1 V ................1.2
OCL (1-3)
µH min. @ 10 kHz, 0.1 V,
(-40 °C to +85 °C) ..........................600
OCL (6-8)
µH min. @ 10 kHz, 0.1 V,
(-40 °C to +85 °C) ..........................600
LL(1-3)
µH max. @ 100 kHz, 0.1 V
short (16-14) ....................................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 (11-6)
pF max. @ 100 kHz, 0.1 V
30 Turns Ratio
(1-3) : (16-14) ......................1 : 2 ±2 %
(6-8) : (11-9) ........................1 : 2 ±2 %
DCR (1-3) ..........................0.5 to 0.8 ohm
DCR (6-8) ..........................0.5 to 0.8 ohm
DCR (16-14) ......................0.9 to 1.6 ohm
DCR (11-9) ........................0.9 to 1.6 ohm
Polarity (1, 16, 6, 11) ............Same phase
HIPOT
Between Windings................2000 VAC
Product Dimensions
SM75057
(DATE)
12.70
(.500)
16 9
18
MAX.
7.00
(.276)MAX.
9.40
(.370)
1.27
(.050)
0.51
(.020)
8.89
(.350)
MAX.
5.65
(.222)MAX.
16 PLCS.
DIMENSIONS ARE: MM
(INCHES)
TOLERANCE: ± 0.254
(.010)
Electrical Schematic
1
3
16
14
6
8
11
9
Soldering Profile
240 °C4 °C/S
45 S
MAX.
PREHEATING SOLDERING COOLING
150 °CCOOLING
IN STILL AIR
90 S
MAX. 30 S
MAX.
Packaging Specifications
Tape & Reel* ........................700 pcs./reel
*“E” suffix at end of part number
designates tape & reel packaging, e.g.
SM75057E.
0.25
(.010) 0 ° - 8 °
0.74 ± 0.03
(.029 ± .001)
16X
Recommended PAD layout
8.89
(.350)
8.33
(.328)
1.27
(.050)
4.45
(.075)
SM75057
YYWW
09/03
