E L E C T R O N I C S I N C .

Surface Mount Power Transformer

TEL: (818) 892-0761

FAX: (818) 894-5791

http://www.pca.com

PCA ELECTRONICS, INC.

16799 SCHOENBORN ST.

NORTH HILLS, CA 91343

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

EPC3028G-EPC3029G

Product performance is limited to specified parameters. Data is subject to change without prior notice.

Primary Specification

Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25

CSC3028G-CSC3029G

Rev. 3

12/18/02

Schematic

5

4

7

8

9

6

2

1

10

11

12

3

1:1:1:1:1:1

Notes :

1. Ns = Number of series connections

2. Np = Number of parallel connections

3. Ks = Ns x

6/Ns

4. Kp =

6/Np

Connection

Series

Parallel

Single Wdg

Series

Parallel

Single Wdg

Part

Number

EPC3028G

EPC3029G

Irms

(Amps)

6.1 /Ks

6.1 /Kp

2.5

7.5 /Ks

7.5 /Kp

3.06

DCR

(

Ω Max.)

.071 xNs

.071 /Np

.071

.047xNs

.047 /Np

.047

Temp. Rise

@ Irms

(°C Typ.)

39

39

39

39

39

39

Vt 1

(V-µSec. Max.)

98 xNs

98

98

65.3 xNs

65.3

65.3

Inductance

(µH ± 25%)

@ 0 Adc

173 x(Ns)

173

173

76.8 x(Ns)

76.8

76.8

2

2

Package EFD20-6

.591

(15.00)

.118

(3.00)

.854 Max.

(21.70)

.835 Max.

(21.20)

Pin 1

I.D.

1

12

6

7

.028

(.700)

PCA

EPC30XXG

D.C.

1.128

(28.65)

.080

(2.03)

0°-8°

.010

(.250)

.425 Max.

(10.80)

.016

(.400)

• Switching Frequency : Up to 1 MHz • Isolation : 500 Vrms •