Zumt491, Maximum ratings, Thermal characteristics – Diodes ZUMT491 User Manual
Page 2
ZUMT491
Document number: DS33334 Rev. 3 - 2
2 of 7
October 2012
© Diodes Incorporated
ZUMT491
A Product Line of
Diodes Incorporated
Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
Characteristic Symbol
Value
Unit
Collector-Base Voltage
V
CBO
80 V
Collector-Emitter Voltage
V
CEO
60 V
Emitter-Base Voltage
V
EBO
7 V
Continuous Collector Current
I
C
1 A
Peak Pulse Current
I
CM
2 A
Base Current
I
B
200 mA
Thermal Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Characteristic Symbol
Value
Unit
Power Dissipation (Note 5)
P
D
500 mW
Thermal Resistance, Junction to Ambient (Note 5)
R
θJA
250
°C/W
Thermal Resistance, Junction to Leads (Note 6)
R
θJL
350
°C/W
Operating and Storage Temperature Range
T
J,
T
STG
-55 to +150
°C
Notes:
5. For a device surface mounted on 25mm X 25mm FR4 PCB with high coverage of single sided 1 oz copper, in still air conditions; device measured when
operating in steady state condition.
6. Thermal resistance from junction to solder-point (at the end of the leads).