NDS8425 データシートの表示（PDF） - Fairchild Semiconductor

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NDS8425

Single N-Channel Enhancement Mode Field Effect Transistor

Fairchild Semiconductor 

ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)

Symbol Parameter

Conditions

Min Typ Max Units

DRAIN-SOURCE DIODE CHARACTERISTICS

IS

Continuous Source Diode Current

1.9

A

VSD

Drain-Source Diode Forward Voltage

VGS = 0 V, IS = 1.9 A (Note 2)

0.69 1.3

V

Notes:

1. RθJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting surface of the drain pins. RθJC is guaranteed by

design while RθCA is determined by the user's board design.

( ) = = = ( ) × PD t

TJ−TA

RθJ A(t)

TJ−TA

RθJ C+RθCA(t)

I

2

D

t

RDS(ON ) TJ

Typical RθJA using the board layouts shown below on 4.5"x5" FR-4 PCB in a still air environment:

a. 50oC/W when mounted on a 1 in2 pad of 2oz copper.

b. 105oC/W when mounted on a 0.04 in2 pad of 2oz copper.

c. 125oC/W when mounted on a 0.006 in2 pad of 2oz copper.

1a

1b

1c

Scale 1 : 1 on letter size paper

2. Pulse Test: Pulse Width < 300µs, Duty Cycle < 2.0%.

NDS8425 Rev. C

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