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Document Number: 69817

S09-0394-Rev. B, 09-Mar-09

Vishay Siliconix

Si4778DY

TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon

Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and

Normalized Thermal Transient Impedance, Junction-to-Ambient

1

10

1000

100

0.2

0.1

0.05

Square WavePulse Duration (s)

1

0.1

0.01

Single Pulse

Notes:

1. Duty Cycle, D =

4. Surface Mounted

Duty Cycle = 0.5

0.02

Normalized Thermal Transient Impedance, Junction-to-Foot

0

1

1

0.2

0.1

Duty Cycle = 0.5

Square WavePulse Duration (s)

1

0.1

0.01

Single Pulse

0.02

0.05