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BC857BWT1 数据手册 - Motorola（摩托罗拉）
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BC857BWT1数据手册
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若手册格式错乱，请下载阅览PDF原文件
BC856B, BC857B, BC858A
www.onsemi.com
5
Figure 13. Thermal Response
t, TIME (ms)
1.0
r(t), TRANSIENT THERMAL
2.0 5.01.00.50.20.1
RESISTANCE (NORMALIZED)
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.01
20 5010 200 500100 1.0k 2.0k 5.0k 10k
Figure 14. Active Region Safe Operating Area
V
CE
, COLLECTOR-EMITTER VOLTAGE (V)
-200
-1.0
I
C
, COLLECTOR CURRENT (mA)
T
A
= 25°C
D = 0.5
0.2
0.1
0.05
SINGLE PULSE
SINGLE PULSE
BONDING WIRE LIMIT
THERMAL LIMIT
SECOND BREAKDOWN LIMIT
3 ms
T
J
= 25°C
Z
q
JC
(t) = r(t) R
q
JC
R
q
JC
= 83.3°C/W MAX
Z
q
JA
(t) = r(t) R
q
JA
R
q
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
q
JC
(t)
t
1
t
2
P
(pk)
DUTY CYCLE, D = t
1
/t
2
-100
-50
-10
-5.0
-2.0
-5.0 -10 -30 -45 -65 -100
1 s
BC858
BC857
BC856
The safe operating area curves indicate I
C
−V
CE
lim
-
its of the transistor that must be observed for reliable oper
-
ation. Collector load lines for specific circuits must fal
l
below the limits indicated by the applicable curve.
The data of Figure 14 is based upon T
J(pk)
= 150°C; T
C
or T
A
is variable depending upon conditions. Pulse curve
s
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. A
t
high case or ambient temperatures, thermal limitation
s
will reduce the power that can be handled to values les
s
than the limitations imposed by the secondary breakdown
.
ORDERING INFORMATION
Device Marking Package Shipping
†
BC856BWT1G
3B
SC−70/SOT−323
(Pb−Free)
3,000 / Tape & Reel
SBC856BWT1G*
BC857BWT1G
3F
SC−70/SOT−323
(Pb−Free)
3,000 / Tape & Reel
SBC857BWT1G*
BC857CWT1G
3G
SC−70/SOT−323
(Pb−Free)
3,000 / Tape & Reel
NSVBC857CWT1G*
BC858AWT1G
3J
SC−70/SOT−323
(Pb−Free)
3,000 / Tape & Reel
BC858BWT1G
3K
SC−70/SOT−323
(Pb−Free)
3,000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*S and NSV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and
PPAP Capable.
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