F28-420 Triad Magnetics, F28-420 Datasheet

Transformer; 12VA; Sec:Ser 0.42A, Par 0.84A; Pri:115/230V; Sec:Ser 28VCT, Par 14V; PC

F28-420

Manufacturer Part Number

F28-420

Description

Transformer; 12VA; Sec:Ser 0.42A, Par 0.84A; Pri:115/230V; Sec:Ser 28VCT, Par 14V; PC

Manufacturer

Triad Magnetics

Type

Powerr

Datasheets

1.F28-420.pdf (3 pages)

2.F28-420.pdf (1 pages)

Specifications of F28-420

Brand/series

Split Pack®/F Series

Configuration

Bobbin

Current, Secondary

0.84/0.42 A

Dielectric Strength

2500 Vrms

Dimensions

1-7/8"L×1-9/16"W×1-7/16"H

Frequency

50/60 Hz

Mounting Type

PCB

Number Of Outlets

Phase

Power, Rating

12 VA

Standards

UL, cULus

Temperature, Operating

+25 °C

Termination

Thru-Hole

Voltage, Primary

115/230 VAC

Voltage, Secondary

14/28 VAC

Weight

0.7 lbs.

Power Rating

12 VA

Primary Voltage Rating

115 V

Secondary Voltage Rating

14 V / 28 V

Mounting Style

SMD/SMT

Product

Power Transformers

Height

1.437 in

Length

1.875 in

Termination Style

Solder

Width

1.562 in

Lead Free Status / Rohs Status

RoHS Compliant part

Current page: 1 of 3
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F28-420

Description:

The F28-420 is a single primary and dual secondary, split bobbin design which

operates with an input of 115V. The output voltage will be either 28.0V with a

center-tap under a 0.42A load with the secondaries wired in series, or 14.0V

under a 0.84A load with the secondaries wired in parallel. The split bobbin

design eliminates the need for costly electrostatic shielding.

Electrical Specifications (@25C)

1. Maximum Power: 12.0VA

2. Primary:

3. Secondary: Series: 28.0V CT@ 0.42A

4. Voltage Regulation: 25% TYP @ full load to no load

5. Temperature Rise: 25C TYP

6. Hipot tested 100% at 2500 VRMS

Construction:

Three flange bobbin construction with primaries and secondaries wound side by

side for low capacitive coupling.

Agency File:

UL: File E53148, UL 5085-2 (506), Class B General Purpose Transformer,

cUL: File E53148, UL 5085-2 (506), Class B General Purpose Transformer,

Canadian Use (CSA 22.2, No.66.2-06)

This model is also available in Class 2, UL 5085-3 (1585) version as

Dimensions:

Weight: 0.70 lbs

Schematic:

RoHS Compliance:

As of manufacturing date February 2005, all standard products meet the

requirements of 2002/95/EC, known as the RoHS initiative.

As of April 7, 2008, UL standards 506 and 1585 will be migrated to UL 5085-2

and 5085-3, respectably.

1.437

50/60Hz

115V

1.562

115V

Parallel: 14.0V @ 0.84A

1.875

0.300

0.400

1.410

0.041

Units in inches.

P C M O U N T : SPLIT PACK

O W E R

0.020

F28-420-C2

0.234

R A N S F O R M E R

Board Layout

0.06" DIAMETER

HOLE

Related parts for F28-420

F28-420 Summary of contents

Page 1

... F28-420 Description: The F28-420 is a single primary and dual secondary, split bobbin design which operates with an input of 115V. The output voltage will be either 28.0V with a center-tap under a 0.42A load with the secondaries wired in series, or 14.0V under a 0.84A load with the secondaries wired in parallel. The split bobbin design eliminates the need for costly electrostatic shielding ...

Page 2

... FS28-200 F36-170 FS36-170 F48-125 FS48-125 F56-110 FS56-110 F120-050 FS120-05 F10-1200 FS10-1200 F12-1000 FS12-1000 F16-800 FS16-800 F20-600 FS20-600 F24-500 FS24-500 D 12.0 F28-420 FS28-420 F36-350 FS36-350 F48-250 FS48-250 F56-220 FS56-220 F120-100 FS120-100 F10-2000 FS10-2000 F12-1600 FS12-1600 F16-1250 FS16-1250 F20-1000 FS20-1000 F24-800 FS24-800 E 20.0 ...

Page 3

... Single Dual Primary Primary Section 6 Pin 8 Pin VA F10-3600 FS10-3600 F12-2850 FS12-2850 F16-2250 FS16-2250 F20-1800 FS20-1800 F24-1500 FS24-1500 A 36.0 F28-1300 FS28-1300 F36-1000 FS36-1000 F48-750 FS48-750 F56-650 FS56-650 F120-300 FS120-300 * 36 VA size has 4 mtg. holes ⁄ ⁄ centers Center Tap Hi-pot tested at 2,500 VRMS. ...

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