Inductor Finders Power  |   RF
Power Magnetics Tools
RF Inductor Tools
New! CM Choke Finder
New! LC Filter Designer
IC / Inductor Match Tool
Application Notes
Other Resources
Designer's Kits

Flyback Transformers for
STMicroelectronics PM8800

  • Designed for ST PM8800 PoE Powered Device Controller
  • 1500 Vrms, one minute isolation from primary and auxiliary to secondary
  • Operate at 250 kHz with 30 – 60 V input
  • Versions for 3.3 V and 5.0 V output
  • 10 V aux winding output; 5.5 V drive winding output
  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations.

SPECIFICATIONS


Part number1
Click to get parts
L at 0 A2
±10% (µH)
L at Ipk3
min (µH)

DCR max
(Ohms)4

Leakage L5
max (µH)
Turns ratio6 Ipk3
(A)
Output7
FA2706-BL_ 77.8 70.0 pri 
sec 
drive 
aux 
0.155
0.008
0.215
0.382
1.53 pri : sec 
pri : drive 
pri : aux 
6.80 : 1
4.25 : 1
2.43 : 1
3.0 3.3 V, 6 A
FA2707-BL_ 77.8 70.0 pri 
sec 
drive 
aux 
0.155
0.019
0.210
0.380
1.10 pri : sec 
pri : drive 
pri : aux 
4.86 : 1
4.25 : 1
2.43 : 1
3.0 5.0 V, 4 A
1 When ordering, please specify packaging code: e.g. FA2707-BLD
Packaging: D = 13" reel, machine-ready 
EIA-481 embossed plastic tape (200 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 250 kHz, 0.2 Vrms, 0 Adc
3 Ipk is peak primary current drawn at minimum input voltage.
4 DCR for the primary and the secondary is with windings connected in parallel. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for the primary and is measured with the secondary and drive windings shorted.
6 Turns ratios are with the primary and secondary windings connected in parallel.
7 Output is with the secondary windings connected in parallel.
Auxiliary winding output:10 V. Drive winding output: 5.5 V
8 Ambient temperature range: −40°C to +125°C
9 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
10 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.
11 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.

Home | Design Tools | Samples | Kits | Price + Stock | Sales | Support | Jobs | Index
Your comments and suggestions are welcome. Contact webmaster@coilcraft.com
Copyright © 2017, Coilcraft, Inc.   Privacy policy
Updated: October 30, 2017