KA4947_13 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer – KA4947-AE

Document 890
Flyback Transformer – KA4947-AE

Part
Turns
  number1
ratio
KA4947-AE_ 2 : 1
Primary (L1)
  inductance2
±20% (µH)
400
DCR max
L1   L2   Ipk (A)3
1.10 0.875 0.23
1. When ordering, please specify packaging code:
KA4947-AEC
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (250 parts 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 C instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (1000 parts per
full reel).
2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP
4284A LCR meter or equivalent.
3. Peak primary current drawn at minimum input voltage
4. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
+
3
1^D
L1
L2
C
V_IN
C
4
2
PWM
–
Typical Flyback Converter
+
V_OUT
–
• Developed for the Cymbet CBC-EVAL-09 Universal Energy
Harvester Evaluation Kit
• Excellent coupling coefficient (k = 0.95)
• Small footprint
Core material Ferrite
Environmental  RoHS compliant, halogen free
Weight  1.27 g
Terminations  RoHS compliant silver-palladium-platinum-glass frit.
Ambient temperature  –40°C to +85°C with Ipk current
Storage temperature  Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation  100 V
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)
Mean Time Between Failures (MTBF) / Failures in Time (FIT)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging  250/7″ reel; 1000/13″ reel;  Plastic tape:  16 mm wide,
0.28 mm thick, 12 mm pocket spacing, 4.83 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
1
4
103B
0.315 ±0.003
8,0 ±0,08
2
3
0.315 ±0.003
8,0 ±0,08
0.185 _max
4,7
Recommended
Land Pattern
0.335
8,50
2
3
0.065
45°
1,66
0.335
8,50
0.065
1
4 ^1,65
0.097
2,47
Dimensions are in
inches
mm
0.067
1,69
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 890  Revised 08/09/13
© 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.