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PDS-002060 Rev 07 © 2019 Luminus Devices, Inc. - All Rights Reserved

Luminus Devices, Inc. • T 408.708.7000 • www.luminus.com

11145 Sonora Court • Sunnyvale, CA 94086 USA

Thermal Resistance

TypicalThermal Resistance

R

θj-b

1

0.4º C/W

R

θb-hs

2

0.1 ºC/W

R

θj-hs

1,2

0.5 ºC/W

R

θj-ref

2

0.4 ºC/W

Window

Die Junction

Window Frame

Thermistor

Copper Core-Board

Thermal Interface Material

Heat Sink

Note 1:

Thermal resistance values are measured in accordance to JEDEC Standards JESD51-14 and JESD51-5x series.

Note 2:

Thermal Resistance is based on eGraf 1205 Thermal interface.

Thermistor Information

The thermistor (used in PT-121 devices are mounted on

coreboards) is from Murata Manufacturing Co. The global

part number is NCP18XH103J03RB.

Please contact Luminus for information on use of the

thermistor and for data in Excel format for temperature vs

resistance plot below.

Electrical Pinout

PT-121-TE Product Datasheet

0

25

50

75

100

125

0

5

10

15

20

Resistance (K ohm)