Nexperia

PDTC143X/123J/143Z/114Y/124XQB-Q

series

50 V, 100 mA NPN resistor-equipped transistors

9. Thermal characteristics

Table 7. Thermal characteristics

Tamb = 25 °C unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

[1] -

-

368

K/W

Rth(j-a)

thermal resistance from junction to ambient

in free air

[2] -

-

298

K/W

[1] Device mounted on an FR4 PCB; single-sided; 35 μm copper; tin-plated and standard footprint.

[2] Device mounted on an FR4 PCB; single-sided; 70 μm copper; tin-plated and standard footprint.

aaa-030582

10-5

10

10-2

10-4

102

10-1

tp (s)

10-3

103

1

102

10

103

Zth(j-a)

(K/W)

1

duty cycle =

0

0.10

0.02

0.05

0.20

0.75

0.33

1

0.50

0.01

FR4 PCB; single-sided; 35 μm copper; tin-plated and standard footprint.

Fig. 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values

aaa-030583

10-5

10

10-2

10-4

102

10-1

tp (s)

10-3

103

1

102

10

103

Zth(j-a)

(K/W)

1

duty cycle =

0.02

0.05

0.20

0.10

0.75

0.33

1

0.50

0.01

0

FR4 PCB; single-sided; 70 μm copper; tin-plated and standard footprint.

Fig. 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values

PDTC143X_TO_124XQB-Q_SER

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Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 1 — 1 October 2021

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