GA3291_13 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Forward Converter Transformer

Document 674
Forward Converter Transformer
For Akros AS1130
PoE Controller
• Developed for Akros Silicon AS1130, 30 W PoE Controller with
Integrated DC-DC Conversion
• Designed for forward topology operating at 350 kHz
• 1500 Vrms, one minute isolation from primary to secondary
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  10.7 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 175 per 13″ reel  Plastic tape: 44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 11.9 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
Leakage
Input
Part
  _Inductance2  DCR max (Ohms)³   _inductance4 _voltage   _{Turns ratio}5
  _number1 _{min (µH)}
pri
sec
max (µH) range (V) pri : sec Output
Input
filter
inductor
Output
filter
inductor
GA3291-AL_ 152
0.065 0.031
0.215
36 – 57 1 : 0.923 12 V, 2.5 A DO1608C-103 MSS1278-683
1. When ordering, please specify a packaging code:
Packaging:
GA3291-ALD
D = 13″ machine ready reel. EIA-481 embossed plastic
tape (175 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 D instead.
2. Inductance is measured at 300 kHz, 0.6 Vrms, 0 Adc.
3. DCR for the primary is measured from pin 1 to pin 3.
4. Leakage inductance is for the primary (pin 1 to pin 3) and is measured
with the secondary shorted.
5. Turns ratio is based on the entire the primary winding (pin 1 to pin 3).
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
0.028
0,70
0.118
3,00
6
Dot indicates pin 1
0.827
21,0
0.425 _max
10,80
0.130
3,3
12
0.118
3,00
0.810 _max
20,57
0.069
7
1,75
0.930
23,62
1
12
Recommended
Land Pattern
Parts manufactured prior
to December 2011 may be
marked differently.
1
7
Pri 2
Sec
8
3
Primary is pin 1 to pin 3.Terminal 2
is for internal connection only. Do not
connect terminal 2 to ground or
any circuitry.
0.969
24,6
1.148
29,15
max
0.004 / 0,10
Dimensions are in
inches
mm
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 674  Revised 12/15/11
© 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.