Surface Mount Power Transformer
E L E C T R O N I C S I N C .
EPC3028G-EPC3029G
Features of the EFD20-6 Series
• Selected models can be used in SMPS Forward,
Push-Pull or Half & Full Bridge Topology
• UL1446 Class B Insulating System
• UL 94V-0 Recognized Material
• Very Low Core Loss Materials
• Very Low Leakage Inductance
Primary Specification
Part
Connection
DCR
Irms
Inductance
(µH 25ꢀ)
@ 0 Adc
Vt 1
Temp. Rise
@ Irms
Number
(Ω Max.)
(Amps)
(V-µSec. Max.)
(°C Typ.)
Series
Parallel
.071 xNs
.071 /Np
.071
6.1 /Ks
6.1 /Kp
2.5
2
2
98 xNs
98
39
39
39
39
39
39
173 x(Ns)
EPC3028G
EPC3029G
173
Single Wdg
Series
98
173
.047xNs
.047 /Np
.047
7.5 /Ks
7.5 /Kp
3.06
65.3 xNs
65.3
76.8 x(Ns)
76.8
Parallel
Single Wdg
65.3
76.8
•
Switching Frequency : Up to 1 MHz • Isolation : 500 Vrms •
Notes :
1. Ns = Number of series connections
2. Np = Number of parallel connections
3. Ks = Ns x 6/Ns
4. Kp = 6/Np
Package EFD20-6
Schematic
1
4
9
.028
Pin 1
I.D.
.854 Max.
(21.70)
(.700)
12
1
6
12
7
.118
2
5
8
PCA
EPC30XXG
D.C.
(3.00)
.591
.835 Max.
(21.20)
(15.00)
11
3
6
7
10
1:1:1:1:1:1
.016
(.400)
.425 Max.
(10.80)
0°-8°
.080
(2.03)
.010
(.250)
1.128
(28.65)
Unless Otherwise Specified Dimensions are in Inches /mm
.010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3028G-CSC3029G Rev. 3 12/18/02
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com