Document 550T
Isolation Transformers
For Texas Instruments RS-485
and Profibus Interfaces
• Developed to work with Texas Instruments ISO3086T and
ISO35T RS-485 Interfaces and ISO1176T Profibus Interface.
• Mounted on the Texas Instruments SN6501xEVM Evaluation
Modules used to analyze the SN6501 oscillator/power driver
• Center tapped primary and secondary windings
• 2500 Vrms, one minute interwinding isolation.
Core material
Ferrite
Terminations
RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight
0.94 – 1.0 g
Ambient temperature
–40°C to +125°C
Storage temperature
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
600/13″ reel Plastic tape: 24 mm wide, 0.37 mm thick,
16 mm pocket spacing, 6.1 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Part
DA2303-AL_
number
1
Pri / sec
voltage
5 V to 5 V
or 3.3 V to 3.3 V
3.3 V to 5 V
Inductance
2
min (µH)
45.6
17.8
DCR max (Ohms)
3
pri
sec
0.130
0.260
0.086
0.232
Leakage
inductance
4
max (µH)
1.0
0.43
Volt-time
product
5
(V-µsec)
34.4
21.5
Power
6
(W)
7.2
7.2
4
Turns ratio
pri : sec
1
:
1.5
1
:
2.2
8
DA2304-AL_
1. When ordering, please specify
termination
and
packaging
codes:
DA2303-ALD
Termination: L
= RoHS compliant tin-silver over tin over nickel over
phos bronze.
Special order: T =
RoHS tin-silver-copper
(95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
Packaging: D
= 13″ machine ready reel. EIA-481 embossed plastic
tape (600 per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter D instead.
2. Inductance is tested between pins 4 and 3 at 500 kHz, 0.5 Vrms, 0 Adc.
3. DCR is per winding.
4. Leakage inductance is for the primary with both windings connected in
series and with the secondary windings shorted.
5. Based on Bsat of the core at 25°C and number of turns on winding 4-3.
6. Calculated output power based on 150 kHz operating frequency.
Power varies depending on application.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Parts manufactured prior
to November 2011 may
be marked differently.
Dot indicates pin 1
1
8
Pri
3
2
7
6
Sec
DA230x-AL
XXXXY
0.394 max
10,00
4
1
5
5
0.475 max
12,07
Primary windings and secondary
windings to be connected
in series on the PC board.
0.235 max
5,97
0.319 ±0.004
8,1 ±0,1
0.004 / 0,10
0.028
0,70
4
0.358
9,10
5
0.067
1,70
0.079
2,00
1
0.079
2,00
1
8
Dimensions are in
inches
mm
0.063
1,60
Recommended
Land Pattern
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 550T
Revised 11/29/11
© Coilcraft Inc. 2012
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.
PCB Design
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