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MJE13002G-A-T92-B View Datasheet(PDF) - Unisonic Technologies

Part NameDescriptionManufacturer
MJE13002G-A-T92-B NPN EPITAXIAL SILICON TRANSISTOR UTC
Unisonic Technologies UTC
MJE13002G-A-T92-B Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
MJE13002
„ SWITCHING TIMES NOTE
NPN EPITAXIAL SILICON TRANSISTOR
In resistive switching circuits, rise, fall, and storage times have been defined and apply to both current and voltage
waveforms since they are in phase, However, for inductive loads which are common to SWITCHMODE power
supplies and hammer drivers, current and voltage waveforms are not in phase. Therefore, separate measurements
must be made on each wave form to determine the total switching time, For this reason, the following new terms have
been defined.
tSV=Voltage Storage Time, 90% IB1 to 10% Vclamp
tRV=Voltage Rise Time, 10-90% Vclamp
tFI=Current Fall Time, 90-10% IC
tTI=Current Tail, 10-2% IC
tC=Crossover Time, 10% Vclamp to 10% IC
An enlarged portion of the inductive switching waveforms is shown in Figure 1 to aid in the visual identity of
these terms.
For the designer, there is minimal switching loss during storage time and the predominant switching power losses
occur during the crossover interval and can be obtained using the standard equation from AN-222:
PSWT=1/2 VccIc (tc)f
In general, trv + tfitc. However, at lower test currents this relationship may not be valid.
As is common with most switching transistor, resistive switching is specified at 25°C and has become a
benchmark for designers. However, for designers of high frequency converter circuits, the user oriented specifications
which make this a “SWITCHMODE” transistor are the inductive switching speeds (tc and tsv) which are guaranteed at
100°C.
RESISTIVE SWITCHING PERFORMANCE
2
1
0.7
tR
0.5
Collector Current, IC (A)
Vcc=125V
Ic/IB=5
TJ=25°C
0.3
0.2
0.1
0.07
0.05
td @ VBE(off)=5V
0.03
0.02
0.02 0.03 0.05 0.07 0.1
0.2 0.3
0.5
0.7
1
0
20
Fig 2. Turn-On Time
Collector Current, IC (A)
10
7
5
tS
Vcc=125V
Ic/IB=5
TJ=25°C
3
2
1
0.7
0.5
0.3
tR
0.2
0.1
0.02 0.03 0.05 0.07 0.1
0.2 0.3 0.5 0.7 1
2
Fig 3. Turn-Off Time
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R204-014.C
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