Coilcraft GA3291-AL Forward Converter Transformer for Akros AS1130 PoE Controller
Inductor Finders Power  |   RF
Power Magnetics Tools
RF Inductor Tools
CM Choke \ Ferrite Beads
LC Filter Designer
IC / Inductor Match Tool
Application Notes
Other Resources
Designer's Kits

Forward Converter Transformer
for Akros AS1130

  • Developed for Akros Silicon AS1130, 30 W PoE Controller
  • Designed for forward topology operating at 350 kHz
  • 1500 Vrms isolation from primary to secondary
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations


Part number1
Click to get parts
±25% (µH)
DCR max3
L max4 (µH)
range (V)
pri : sec
Output Input
GA3291-AL_ 203 0.065 (pri)
0.031 (sec)
0.215 36 – 57 1 : 0.923 5 V, 3 A DO1608C-103 MSS1278-683
1 When ordering, please specify packaging code: e.g. GA3291-ALD
  Packaging: 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 measured at 300 kHz, 0.6 Vrms, 0 Adc.
3 DCR for the primary is measured from pin 1 to pin 3. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
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 Ambient temperature range: −40°C to +125°C
7 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
8 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
9 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Your comments and suggestions are welcome. Contact [email protected]
Copyright © 2020, Coilcraft, Inc.   Privacy policy
Updated: April 16, 2018