835-00852F datasheet, PDF - EEWORLD Datasheet

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835-00852F: DescriptionSMPS Transformer, 13W, ROHS COMPLIANT; CategoryPower management transformer; File Size92KB，2 Pages; ManufacturerElec & Eltek; Websitehttp://www.eleceltek.com; Environmental Compliance

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835-00852F Overview

SMPS Transformer, 13W, ROHS COMPLIANT

835-00852F Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Elec & Eltek
package instruction	ROHS COMPLIANT
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	BREADTH & HEIGHT DIM. INCLUDES TERMINALS ALSO; FLY BACK; TURNS RATIO IS 1:0.19
high	12.32 mm
Maximum input voltage	57 V
Minimum input voltage	33 V
length	13.97 mm
Manufacturer's serial number	835-00852
Installation features	SURFACE MOUNT
Number of primary windings	1
Number of secondary windings	2
Maximum operating frequency	250 kHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output voltage 1	24 V
method of packing	TAPE & REEL
physical size	L13.97XB17.65XH12.32 (mm)
rated power	13 W
Primary inductance	127 µH
surface mount	YES
Transformer type	SMPS TRANSFORMER
width	17.65 mm

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E & E Magnetic Products Limited

POWER TRANSFORMER

Flyback Transformer for PoE

Providing Power to PoE devices with up to 13 Watts

CHEMATICS

Flyback transformers designed for PoE (IEEE802.3af)

powered devices with up to 13 Watts

Designed for 250kHz switching frequency (continuous mode)

with input of 33 - 57V

Low Leakage Inductance

Hipot voltage: 1500Vrms

Operating temperature -40°C to +85°C.

RoHS compliant version is available

Custom design is also available

LECTRICAL

PECIFICATION @

25°C

Part

Number

835-00848

835-00849

835-00850

835-00851

835-00852

RoHS

Part

Number

835-00848F

835-00849F

835-00850F

835-00851F

835-00852F

Turns Ratio

Pri : Sec

1 : 0.166

1 : 0.25

1 : 0.50

1 : 0.567

1 : 0.667

Pri : Bias

1 : 0.50

Inductance

at 0A

(uH

± 10

127

Inductance Leakage

at Ipk

Inductance

(uH Min)

(nH Max)

114.3

1.25

0.95

0.65

0.80

0.60

DCR

(mOhm Max)

Pri

255

222

199

290

255

Bias

310

348

308

355

315

Sec

Ipk

(A)

Secondary

Output

Vout=3.3V,4.0A

Vout=5.0V,2.6A

Vout=12V,1.08A

Vout=19.5V, 0.67A

Vout=24V, 0.54A

1.0

Notes:

1. Inductance is measured at 250kHz, 0.1Vrms, 0Adc.

2. Peak primary current, Ipk, is drawn at minimum input voltage.

3. DCR for the secondary is per winding.

4. Leakage Inductance measured between pins 3 and 4 with all other pins shorted.

5. Turns ratio is with the secondary windings connected in parallel.

6. Output of the secondary is with the windings connected in parallel. Bias winding output is 12V, 20mA.

7. Operating temperature range: -40°C to +85°C. The part temperature (ambient temperature + temperature rise) should

not exceed the upper limit of the operating temperature under worst case operating conditions. Circuit design,

component placement, PWB trace size and thickness, airflow and other cooling provisions all affect the part

temperature. Part temperature should be verified in the end application.

2/F Block A, 94 Tokwawan Road, Kowloon, Hong Kong

Tel: (852) 2765 3888

Fax: (852) 2954 3304

PX202(02)

Revised in 07/09

835-00852F Related Products

	835-00852F	835-00851F	835-00852	835-00851
Description	SMPS Transformer, 13W, ROHS COMPLIANT	SMPS Transformer, 13W, ROHS COMPLIANT	SMPS Transformer, 13W	SMPS Transformer, 13W
Is it lead-free?	Lead free	Lead free	Contains lead	Contains lead
Is it Rohs certified?	conform to	conform to	incompatible	incompatible
Maker	Elec & Eltek	Elec & Eltek	Elec & Eltek	Elec & Eltek
Reach Compliance Code	unknown	unknown	unknown	unknown
ECCN code	EAR99	EAR99	EAR99	EAR99
Other features	BREADTH & HEIGHT DIM. INCLUDES TERMINALS ALSO; FLY BACK; TURNS RATIO IS 1:0.19	BREADTH & HEIGHT DIM. INCLUDES TERMINALS ALSO; FLY BACK; TURNS RATIO IS 1:0.19	BREADTH & HEIGHT DIM. INCLUDES TERMINALS ALSO; FLY BACK; TURNS RATIO IS 1:0.19	BREADTH & HEIGHT DIM. INCLUDES TERMINALS ALSO; FLY BACK; TURNS RATIO IS 1:0.19
high	12.32 mm	12.32 mm	12.32 mm	12.32 mm
Maximum input voltage	57 V	57 V	57 V	57 V
Minimum input voltage	33 V	33 V	33 V	33 V
length	13.97 mm	13.97 mm	13.97 mm	13.97 mm
Manufacturer's serial number	835-00852	835-00851	835-00852	835-00851
Installation features	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT
Number of primary windings	1	1	1	1
Number of secondary windings	2	2	2	2
Maximum operating frequency	250 kHz	250 kHz	250 kHz	250 kHz
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Output voltage 1	24 V	19.5 V	24 V	19.5 V
method of packing	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL
physical size	L13.97XB17.65XH12.32 (mm)	L13.97XB17.65XH12.32 (mm)	L13.97XB17.65XH12.32 (mm)	L13.97XB17.65XH12.32 (mm)
rated power	13 W	13 W	13 W	13 W
Primary inductance	127 µH	127 µH	127 µH	127 µH
surface mount	YES	YES	YES	YES
Transformer type	SMPS TRANSFORMER	SMPS TRANSFORMER	SMPS TRANSFORMER	SMPS TRANSFORMER
width	17.65 mm	17.65 mm	17.65 mm	17.65 mm

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