TELECOMMUNICATIONS
I S O L AT I O N T R A N S F O R M E R S — S U R FA C E - M O U N T
SMD5xx:
Dual Channel, Quad Transformer
SMD5xx
Part Number Table
Part
Number
Turns Ratio (Pri:Sec)
Transmit
Receive
SMD501
SMD502
All dimensions are ±0.005 unless otherwise noted.
All dimensions are in inches.
1:1.15
1:2
1:1.36
1:1/1.26
1:1.15
1:1
1:1.41
1:1
1:1.36
1:1.15
1:2.42
1:2.42
1:1.36
1:1.5
1:1.58
1:2.4
1:2.3
1:1.18
1:1.26
1:1.58
1:2
1:2
1:2
1:2
1:1.15
1:2
1:1.41
1:1
1:1
1:1
1:2.42
1:1
1:1.36
1:1
1:1
1:2
1:1
1:1
1.26:1
1:1.58
SMD503
SMD504
SMD505
T1/E1 Electrical Characteristics @ 25°C
Primary Inductance*:
Leakage Inductance*:
Interwinding Capacitance*:
Dielectric Isolation (Pri:Sec):
1.2mH Min, 1.5mH Typ for ET parts
0.6mH Min for ET parts @ -40°C
0.6µH Max
30pF Max
1500 Vrms Min
SMD506
SMD507
SMD508
SMD509
SMD510
SMD512
SMD513
Winding DC Resistance**
Ratio Number
Ohms Max
SMD515
For example:
SMD503 has
0.70 Ohm max Transmit Pri
0.80 Ohm max Transmit Sec
0.70 Ohm max Receive Pri
1.20 Ohm max Receive Sec
SMD518
SMD519
SMD520
SMD521
SMD522
SMD523
SMD524
1
1.15
1.26
1.36
1.41
2
2.42
0.70
0.80
0.80
0.80
1.00
1.20
1.50
* All impedance measurements are made with 0.1Vrms@100kHz
Notes:
1) All of the SMD5xx parts are available for
operation from -40C to +85C by adding the
letters "ET" at the end of the part number.
For example, the extended temperature
version of SMD505 would be SMD505ET.
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