FCX658
THERMAL CHARACTERISTICS
PARAMETER SYMBOL MAX. UNIT
Thermal Resistance:Junction to Ambient
1
Junction to Case
R
th(j-amb)1
R
th(j-case)
125
10
°C/W
°C/W
P - Power Dissipation (Watts)
D
1.0
2.0
3.0
4.0
0 20 40 60 80 100 120 140 160
A
T - Ambient Temperature
SOT89 (1W) Derating
100us
Pulse Width
Transient Thermal Resistance
0
Thermal Resistance ( C/W)
D=1
D=0.2
D=0.1
D=0.05
D=0.5
Single Pulse
D=t1
tP
t1
tP
1ms 10ms 100ms 1s 10s 100
20
40
60
80
100
120
Transient thermal resistance for a Zetex
1W SOT89 device mounted on a 15 mm x
15 mm ceramic substrate
Zetex plc.
Fields New Road, Chadderton, Oldham, OL9-8NP, United Kingdom.
Telephone: (44)161 622 4422 (Sales), (44)161 622 4444 (General Enquiries)
Fax: (44)161 622 4420
Zetex GmbH Zetex Inc. Zetex (Asia) Ltd. These are supported by
Streitfeldstraße 19 47 Mall Drive, Unit 4 3701-04 Metroplaza, Tower 1 agents and distributors in
D-81673 München Commack NY 11725 Hing Fong Road, major countries world-wide
Germany USA Kwai Fong, Hong Kong Zetex plc 2000
Telefon: (49) 89 45 49 49 0 Telephone: (631) 543-7100 Telephone:(852) 26100 611
Fax: (49) 89 45 49 49 49 Fax: (631) 864-7630 Fax: (852) 24250 494 Internet:http://www.zetex.com
This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied
or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or
services concerned. The Company reserves the right to alter without notice the specification, design, price or conditions of supply of any
product or service.
