E L E C T R O N I C S I N C .
Forward Transformer
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
EPC3577G-LF
Product performance is limited to specified parameters. Data is subject to change without prior notice.
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
• 90W PoE Synchronous Forward Transformer
• Designed to work with Linear Technology LT4276A
• Lead free
• Class B Insulation System
• Switching Frequency: 200kHz
• Duty Cycle: 65% Max.
• Switching Ipeak: 7A
• Operating Temperature: -40°C to +125°C
• Storage Temperature: -40°C to +125°C
Package
Electrical Parameters @ 25°C
Inductance
(µH±10%)
180
Primary
@100kHz,1.0Vrms
DCR
(m
Ω Max.)
Hipot
(Vrms)
Interwinding Capacitance
(pF Max.)
@100kHz, 0.1Vrms
250
Primary to Aux.
& Secondary
Leakage Inductance
(µH Max.)
0.45
Primary with Aux. &
Sec. shorted
@100kHz, 0.1Vrms 60Hz, 60 secs
1500
Wdgs. to
Core
1500
Pri. & Aux.
to Sec.
Turns Ratio
1.5:0.875:1
Pri.: Aux.: SecAux.
200
Secondary
10
Primary
25
Schematic
0.125
(3.175)
1.150
(29.21)
Component Outline
1.20 x 0.906
(30.48 x 23.00)
0.118
(3.00)
0.065
(1.65)
PCB Layout
0.010
(0.25)
0.018
(0.450)
0.047
(1.20)
0°-8°
1.140 Max.
(28.86)
0.453 Max.
(11.50)
12 Surfaces
0.004 Max.
(0.100)
12
0.906 Max.
(23.0)
0.028
(0.700)
0.591
(15.00)
0.118
(3.00)
0.830
(21.08)
6
1
7
1. Lead Finish
2. Peak Solder Rating
3. Weight
4. Packaging Information
(Tray)
Pb-Free
260°C
14.6 grams
40 pcs./ Tray
Notes EPC3577G-LF
Primary
Vin: 33V - 57V
Aux.
10V (50mA)
Secondary
12V (7.5A)
12
10
11
7
9
8
2
5
1
6
Pins 3 & 4 - no connection
CSC3577G-LF Rev. 4 08/03/15