Manufacturer of Passive Components

800-684-5322 Inside US

949-453-1811 Outside US

Copyright © 2014 by CT Magnetics, DBA Central Technologies. All rights reserved.

CT Magnetics reserves the right to make improvements or change specifications without notice

REV 04.02.14

SMD PoE Power Transformers

www.ctparts.com

CTPTF

Series

From 3W to 27W

SPECIFICATIONS

Not Shown at Actual Size

CHARACTERISTICS

Description: SMD Transformers for Power over Ethernet(PoE)

Features:

Designed for 200KHz switching frequency.

•

Power: 3W~27W

•

Hipot: 1500Vrms

•

Three different SMD platforms.

•

Custom designs available.

•

Operating Temperature: -40°C to +125°C

Storage Temperature: -55°C to +125°C

Solder reflow temperature: 245°C for 10 seconds maximum

Samples available. See website for ordering information.

Part Number

(1)

Turns Ratio

Pri:Sec:AUX

(2)

Inductance

±10%

(µH)

Input

(3)

Leakage Inductance

Max.

(µH)

(4)

DCR

Max.

(

W)

(5)

Output

Voltage

Pri

Aux

Sec

CTPTf-5011EP7

1:0.083:0.208

500

33~57V, 200KHz

7.5

1.75

0.215

0.015

Vo=3.3V/3W, 8V/20mA

CTPTf-3111EP7

1:0.182:0.682

310

33~57V, 200KHz

5.0

1.60

2.60

0.045

Vo=3.3V/3W, 12V20mA

CTPTf-5012EP7

1:0125:0.208

500

33~57V, 200KHz

7.5

1.75

0.215

0.035

Vo=5.00V/3W, 8V/20mA

CTPTf-3112EP7

1:0.273:0.682

310

33~57V, 200KHz

5.0

1.60

2.65

0.087

Vo=5.00V/3W, 12V/20mA

CTPTf-5211EP7

1:0.286:0.204

521

33~57V, 200KHz

7.5

1.75

0.22

0.100

Vo=12V/3W, 8V/20mA

CTPTf-3113EP7

1:0.682:0.682

310

33~57V, 200KHz

5.0

1.60

2.60

0.55

Vo=12V/3W,12V/20mA

eP7 8PIN SMD

PHySICAl dImENSIONS

eP7 8PIN SMD (Unit: mm)

2.5±0.1

0.7x0.25

8

1

5

4

10.67Max.

13.5Max.

8*1.27

2.50

3

4

2

1

6,5

8,7

PRI

SEC

AUX

Schematic

NOTeS FROM TAbLeS

1.

Turn ratio is with the secondary windings connected in parallel.

L(nom) = Nominal Inductance is for PRI winding, measured at 200KHz,

2.

0.1Vrms, 0Adc.

Leakage inductance measured between PRI with other pins shorted.

3.

DCR for the secondary windings connected in parallel.

4.

Output is with the secondary windings connected in parallel.

5.