Data Sheet

BD675G, BD675AG, BD677G, BD677AG, BD679G, BD679AG, BD681G
http://onsemi.com
3
There are two limitations on the power handling ability of
a transistor average junction temperature and secondary
breakdown. Safe operating area curves indicate I
C
− V
CE
limits of the transistor that must be observed for reliable
operation; e.g., the transistor must not be subjected to greater
dissipation than the curves indicate.
At high case temperatures, thermal limitations will reduce
the power that can be handled to values less than the
limitations imposed by secondary breakdown.
Figure 3. Darlington Circuit Schematic
BASE
NPN
BD675G, BD675AG
BD677G, BD677AG
BD679G, BD679AG
BD681G
COLLECTOR
EMITTER
[ 8.0 k [ 120
ORDERING INFORMATION
Device Package Shipping
BD675G TO−225
(Pb−Free)
500 Units / Box
BD675AG TO−225
(Pb−Free)
500 Units / Box
BD677G TO−225
(Pb−Free)
500 Units / Box
BD677AG TO−225
(Pb−Free)
500 Units / Box
BD679G TO−225
(Pb−Free)
500 Units / Box
BD679AG TO−225
(Pb−Free)
500 Units / Box
BD681G TO−225
(Pb−Free)
500 Units / Box