Isolation Power Transformers
Toroid Platform SMD
Push Pull Converter Transformer
Compatible with MAXIM™ MAX253 to power RS-485/RS232
transceiver and other communication interfaces
2.5KVrms isolation
Compact and cost effective industrial design
4
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
Leakage Inductance
(1-3) with
(4-6) shorted (1, 2, 3) to (4, 5, 6)
Part 2, 3, 4
Number
Inductance
(1-3)
Capacitance
DCR (1-3)
(Ω MAX)
DCR (4-6)
(Ω MAX)
MAX (1-3)1
(V-µsec Max)
Turns Ratio
(1:3) (6:4)
Isolated Voltage
(Vrms)
(µH 35%)
(µH MAX)
(pF MAX)
PH9085.011NL
PH9085.012NL
PH9085.021NL
PH9085.034NL
PH9085.035NL
PH9085.038NL
PH9085.043NL
PH9085.083NL
PH9085.089NL
1020
1020
1160
1020
1020
1020
1160
1160
1160
0.8
30
0.60
0.85
0.60
0.60
0.80
0.85
0.60
0.60
0.60
0.65
1.60
0.35
0.75
1.20
2.00
0.50
0.30
0.70
22
22
1CT : 1CT
1CT : 2CT
2CT : 1CT
3CT : 4CT
3CT : 5CT
3CT : 8CT
4CT : 3CT
8CT : 3CT
8CT :9CT
0.6
40
1.6
20
23.6
22
0.6
40
2500
0.6
40
22
0.7
40
22
0.8
30
23.6
23.6
23.6
2.0
15
0.6
40
Notes:
1. The maximum volt-usec rating limits the peak flux density to 3600 gauss when used in
bi-polar drive application with 200KHz. For unipolar drive applications or a bi-polar drive
with 350kHz, a maximum volt-usec could be 60% of the listed value. For Push-Pull top-
ology, where the voltage is applied across half the primary winding turns, the maximum
volts-use needs to be derated by 50%.
2. Optional Tape & Reel packing can be ordered by adding a “T” suffix to the part
number (i.e. PH9085.012NL becomes PH9085.012NLT). Pulse complies to industry
standard tape and reel specification EIA481.
3. The “NL” suffix indicates an RoHS-compliant part number.
Mechanical
Schematic
PH9085.XXXXNL
Weight ...........................0.365grams
Tape & Reel ........................700/reel
Tray ......................................55/tray
Inches
mm
Dimensions:
Unless otherwise specified,
.010
0,25
all tolerances are
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
1
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