UTC 2SD879 NPN EPITAXIAL SILICON TRANSISTOR
UTC UNISONIC TECHNOLOGIES CO. LTD 1
QW-R208-010,A
1.5V, 3V STROBE APPLICATIONS
DESCRIPTION
The UTC 2SD879 is a NPN epitaxial silicon transistor,
designed for 1.5V and 3V strobe applications.
FEATURES
*In applications where two NiCd batteries are used to
provide 2.4V, two 2SD879s are used.
*The charge time is approximately 1 second faster than
that of germanium transistors.
*Less power dissipation because of lwo
Collector-to-Emitter Voltage VCE(sat), permitting more
flashes of light to be emitted.
*Large current capacity and highly resistant to break-down.
*Excellent linearity of hFE in the region from low current to
high current.
SOT-89
1
1:EMITTER 2:COLLECTOR 3:BASE
ABSOLUTE MAXIMUM RATINGS ( Ta=25°C ,unless otherwise specified )
PARAMETER SYMBOL VALUE UNIT
Collector-Base Voltage VCBO 30 V
Collector-Emitter Voltage VCEX 20 V
Collector-Emitter Voltage VCEO 10 V
Emitter-Base Voltage VEBO 6 V
Collector Dissipation PD 1 W
Collector Current(DC) Ic 3 A
Collector Current(PULSE) Icp 5 A
Junction Temperature Tj 150 °C
Storage Temperature TSTG -55 ~ +150 °C
Note: PULSE CONDITION -> 100 ms single pulse
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Collector-Base Voltage VCBO IC=10uA, IE=0 30 V
Collector-Emitter Voltage VCEX IC=1mA, VBE=3V 20 V
Collector-Emitter Voltage VCEO IC=1mA, RBE=∞ 10 V
Emitter-Base Voltage VEBO IE=10uA, IC=0 6 V
Base-Emitter Voltage VBE VCE=-1V,IC=-2A 0.83 1.5 V
Collector Cut-Off Current ICBO VCB=20V,IE=0 1 µA
Emitter Cut-Off Current IEBO VEB=4V,Ic=0 1 µA
DC Current Gain hFE VCE=2V, Ic=3A (pulse) 140 210 400
Collector-Emitter Saturation Voltage VCE(sat) Ic=3A,IB=60mA (pulse) 0.3 0.4 V
Current Gain Bandwidth Product fT VCE=10V, Ic=50mA 200 MHz
Output Capacitance Cob VCB=10V,f=1MHz 30 pF
Pulse: 1mS
UTC 2SD879 NPN EPITAXIAL SILICON TRANSISTOR
UTC UNISONIC TECHNOLOGIES CO. LTD 2
QW-R208-010,A
UTC 2SD879 NPN EPITAXIAL SILICON TRANSISTOR
UTC UNISONIC TECHNOLOGIES CO. LTD 3
QW-R208-010,A
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
