BC856ALT-1 ON Semiconductor, BC856ALT-1 Datasheet - Page 5

• Manufacturer Part Number: BC856ALT-1
• Description: General Purpose Transistors(PNP Silicon)
• Manufacturer: ON Semiconductor

Motorola Small–Signal Transistors, FETs and Diodes Device Data
–200
–100
–5.0
–2.0
–50
–10
–1.0
0.07
0.05
0.03
0.02
0.01
1.0
0.7
0.5
0.3
0.2
0.1
0.1
Figure 14. Active Region Safe Operating Area
0.2
D = 0.5
0.2
0.1
V CE , COLLECTOR–EMITTER VOLTAGE (V)
BONDING WIRE LIMIT
THERMAL LIMIT
SECOND BREAKDOWN LIMIT
0.05
–5.0
T A = 25 C
0.5
SINGLE PULSE
1.0
–10
T J = 25 C
SINGLE PULSE
BC558
BC557
BC556
1 s
2.0
–30 –45 –65 –100
5.0
BC856ALT1,BLT1 BC857ALT1,BLT1 BC858ALT1,BLT1,CLT1
3 ms
Figure 13. Thermal Response
10
20
t, TIME (ms)
transistor that must be observed for reliable operation. Collector load
lines for specific circuits must fall below the limits indicated by the
applicable curve.
variable depending upon conditions. Pulse curves are valid for duty
cycles to 10% provided T J(pk) 150 C. T J(pk) may be calculated from
the data in Figure 13. At high case or ambient temperatures, thermal
limitations will reduce the power that can be handled to values less
than the limitations imposed by the secondary breakdown.
P (pk)
The data of Figure 14 is based upon T J(pk) = 150 C; T C or T A is
The safe operating area curves indicate I C –V CE limits of the
DUTY CYCLE, D = t 1 /t 2
50
t 1
100
t 2
200
500
Z JC (t) = r(t) R JC
R JC = 83.3 C/W MAX
Z JA (t) = r(t) R JA
R JA = 200 C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t 1
T J(pk) – T C = P (pk) R JC (t)
1.0 k
2.0 k
5.0 k
10 k
5