Flyback Power Transformer
E L E C T R O N I C S I N C .
EPC3127-X & EPC3127-X-LF
• Used in SMPS Flyback Topology
• Designed for use with Power Integration Chip
• Reinforced Insulation (Triple Insulated Wire)
• Add “-LF” after part number for Lead-Free
• UL 94V-0 Recognized Components
• UL 1446 Class F Insulation System
• Very Low Core Loss
Electrical Parameters @ 25° C
Schematic
PCA
Part
Number
Chipset
Voltage
(Vdc)
L Prim.
[Pins 2-1]
(µH ± 10%)
Current
(Adc)
V Out
2
V Out
1
Fb
V Out
1
V Out
2
Fb
V In
@ 10 KHz,
0.1 Vrms
---
---
2
---
---
TNY268P
TNY266P
---
---
3.0
2.0
2.0
1.2
2.0
.05
.05
.05
.05
.05
EPC3127-1(-LF)
120-375
120-375
120-375
120-375
120-375
5
5
15
15
15
15
15
1900
1900
2400
475
A
A
B
A
A
{
TOP232Y/TOP242Y
TOP244P
3.3
---
EPC3127-2(-LF)
EPC3127-3(-LF)
EPC3127-4(-LF)
5
13.55
3.3
TNY267
---
2800
•
Switching Frequency : 132 KHz • Isolation : 4500 Vrms •
Dielectric Rating
(Vrms)
1 sec. 4500 or 60 sec. 3750
1 sec. 4500 or 60 sec. 3750
Between V Out Wdg’s to Core
1 sec. 1500
Between V In Wdg & Fb Wdg
V In Wdg to all V Out Wdg’s & Core
Schematic A
Schematic B
Notes :
EPC3127-X
EPC3127-X-LF
1. Lead Finish
SnPb
Hot Tin Dip (Sn)
1
2
3
1
2
3
8
V In
Fb
V In
Fb
V Out 1
V Out 2
2. Peak Solder Rating
(Wave Solder Only)
260°C
10 (+2/-0) seconds
260°C
10 (+2/-0) seconds
8
7
6
V Out 1
3. Weight
TBD grams
TBD grams
7
4. Packaging Information Tray :
TBD pieces/tray
TBD pieces/tray
4
4
5
Package
.787
(20.00)
.815
(20.70)
.590
(15.00)
Pin 1 I.D.
1
2
3
4
8
.552
Max.
(14.00)
PCA
EPC3127-X(-LF)
D.C.
.728
Max.
(18.50)
7
6
5
.590
(15.00)
.138
(3.50)
.197
(5.00)
.051
.063
(1.60)
(1.30)
.031 Ø
(.800)
.197
(5.00)
Component Side
.590
Typ.
(15.00)
.590
Typ.
(15.00)
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.
CSC3127-X & -LF Rev. 8 2/22/07 RR
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com