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6

Document Number: 67030

S10-2250-Rev. A, 04-Oct-10

.

Normalized Thermal Transient Impedance, Junction-to-Ambient

1

10

10 000

100

0.2

0.1

Square Wave Pulse Duration (s)

1

0.1

0.01

Notes:

1. Duty Cycle, D =

4. Surface Mounted

Duty Cycle = 0.5

Single Pulse

0.02

0.05

1000

0

1

1

0.2

0.1

Duty Cycle = 0.5

Square Wave Pulse Duration (s)

1

0.1

0.05

Single Pulse

0.02

DTS4500

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Note

Normalized Thermal Transient Impedance, Junction-to-Ambient

• The characteristics shown in the two graphs

- Normalized Transient Thermal Impedance Junction-to-Ambient (25 °C)

- Normalized Transient Thermal Impedance Junction-to-Foot (25 °C)

are given for general guidelines only to enable the user to get a

“ball park” indication of part capabilities. The data are extracted from single

pulse transient thermal impedance characteristics which are developed from empirical measurements. The latter is valid for the part

mounted on printed circuit board - FR4, size 1" x 1" x 0.062", double sided with 2 oz. copper, 100 % on both sides. The part capabilities

can widely vary depending on actual application parameters and operating conditions.