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Document 888
Isolation Transformers ForAnalogDevicesADuM347x
Quad-Channel Digital Isolators
• Developed to work with Analog Devices ADuM347x quad-
channel, digital isolators with integrated PWM controller and
transformer driver
• Power rating: 2 Watts
• Designed to meet UL/CSA/IEC 60950 Basic Insulation with
1.5 mm creepage and clearance.
Core material Ferrite
Terminations Tin-silver over tin over nickel over phos bronze
Isolation 2500 Vrms primary to secondary; 500 Vrms winding to core
Weight 0.95 – 0.98 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 600/13reel; Plastic tape: 24 mm wide, 0.37 mm thick,
16 mm pocket spacing, 6.1 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Part
Inductance2
number1 min (µH)
JA4631-BL_ 63.75
JA4650-BL_ 63.75
KA4976-AL_ 63.75
Turns
ratio
1:2
1:3
1:5
Pri / output voltages
output
pri (pin 8)
output
(pins 6 & 7)
output
(pin 5)
5 V +3.3 to +5 V 0 V No output
5 V +12 to +15 V +6 to +7.5 V
0V
5 V +12 to +15 V
0 V –12 to –15 V
1. When ordering, please specify a packaging code:
JA4631-BLD
Packaging: D = 13machine 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 for the primary, measured from pins 4 – 3 at 1 kHz, 0.1 Vrms.
3. DCR is for each winding of the primary and secondary.
4. Leakage inductance is for the primary windings, measured from pins 1 – 4
with all secondary windings shorted.
5. Based on Bsat of the core at 25°C and the number of turns on winding 4- 3.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
DCR max
(Ohms)3
pri sec
0.095 0.190
0.122 0.260
0.095 1.17
Leakage Volt-time
inductance4 product5
max (µH) (V-µsec)
0.460
17.6
0.660
17.6
0.515
17.6
Analog Devices is a trademark of Analog Devices, Inc.
Dimensions are in
inches
mm
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 888 Revised 09/01/11
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.