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BDX53CG View Datasheet(PDF) - ON Semiconductor

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BDX53CG Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
BDX53B, BDX53C (NPN), BDX54B, BDX54C (PNP)
RB AND RC VARIED TO OBTAIN DESIRED CURRENT LEVELS
D1 MUST BE FAST RECOVERY TYPES, e.g.:
1N5825 USED ABOVE IB [ 100 mA
MSD6100 USED BELOW IB [ 100 mA
TUT
VCC
− 30 V
RC
SCOPE
V2
RB
APPROX
+ 8.0 V
0
51 D1
[ 8.0 k [ 120
V1
APPROX
−12 V
25 ms
tr, tf v 10 ns
DUTY CYCLE = 1.0%
+ 4.0 V
for td and tr, D1 is disconnected
and V2 = 0
For NPN test circuit reverse all polarities
Figure 2. Switching Time Test Circuit
5.0
3.0
ts
2.0
1.0
tf
0.7
0.5
0.3
0.2 VCC = 30 V
IC/IB = 250
0.1 IB1 = IB2
0.07 TJ = 25°C
0.05
0.1
0.2 0.3
tr
td @ VBE(off) = 0 V
0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (AMP)
Figure 3. Switching Times
5.0 7.0 10
1.0
0.7 D = 0.5
0.5
0.3
0.2
0.2
0.1
0.1
0.05
0.07
0.02
0.05
0.03
SINGLE PULSE
0.02
0.01
0.01
0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5
P(pk)
t1
t2
SINGLE
PULSE
DUTY CYCLE, D = t1/t2
RqJC(t) = r(t) RqJC
RqJC = 1.92°C/W
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) − TC = P(pk) RqJC(t)
1.0 2.0 3.0 5.0 10
t, TIME OR PULSE WIDTH (ms)
20 30 50 100 200 300 500 1000
Figure 4. Thermal Response
20
100 ms
10
500 ms
5.0
5.0 ms
2.0
1.0 ms
TJ = 150°C
dc
1.0
BONDING WIRE LIMITED
0.5
THERMALLY LIMITED @ TC = 25°C
(SINGLE PULSE)
0.2
SECOND BREAKDOWN LIMITED
0.1 CURVES APPLY BELOW RATED VCEO
0.05
0.02
1.0
2.0 3.0
BDX53B, BDX54B
BDX53C, BDX54C
5.0 7.0 10
20 30 50 70 100
VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS)
Figure 5. Active−Region Safe Operating Area
There are two limitations on the power handling ability of
a transistor average junction temperature and second
breakdown. Safe operating area curves indicate IC −VCE
limits of the transistor that must be observed for reliable
operation, i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figure 5 is based on TJ(pk) = 150°C; TC is
variable depending on conditions. Second breakdown pulse
limits are valid for duty cycles to 10% provided
TJ(pk) t 150°C. TJ(pk) may be calculated from the data in
Figure 4. At high case temperatures, thermal limitations will
reduce the power that can be handled to values less than the
limitations imposed by second breakdown.
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