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14 W / 21 W T5 miniature ballast driven by L6520 and STT13005D bipolar transistors
  • active Active

The EVAL6520-1421 is a demonstration board able to drive either a 14 W or 21 W linear T5 fluorescent lamp with the L6520 low voltage ballast controller.

The half bridge consists of NPN high voltage power transistors driven by a suitable pulse transformer.

pdf Please read
Errata Sheet
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Data Brief

Key Features

  • Drives either T5-14W-HE or T5-21W-HE lamps
  • Standard form factor (19 mm x 120 mm)
  • Compliance with IEC61347-2-3, IEC61000-2-3 and EN55022 Class-C


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1241: 14 W / 21 W T5 miniature ballast driven by L6520 and STT13005D bipolar transistors
2.0 1,497 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for EVAL6520-1421 board
1.0 137 KB

Bill of Materials

Description Version Size
BOM for EVAL6520-1421 board
1.0 13 KB

Schematic Pack

Description Version Size
Board schematics for EVAL6520-1421 board
1.0 25 KB

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVAL6520-1421ActiveL6520Buy Direct42.87Distributor reported inventory date: 2016-02-27
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA50
Not compliant-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.