Tektronix 576 - Device Measurement Procedures

Operati
n g
Inst
r uctions-Type576
T h is p art of t he O p erating I
n structions d escribes t he use
of t h e Typ e 576 to measure
some basic parameters of bi-
p olar transistors, fiel d effect
transistors, uni j unction tra n sis-
tors, silicon controlle d rectifie r s, signal an d rectifier d
io d es,
Zener d iodes, an d tunnel an d bac k d io d es .
F
or
eac h of t h e
d evices d iscusse d , t h is section includes
tables of Ty p e 576
control settings re q uired to ma ke an accurate measurement
with out d amaging t he d evice u nder test . Below
each table is
α block d iagram s h owi ng t h e connections of t h
e collector
supp ly, t he ste p generator and t he dis p lay am p lifiers to t h
e
d evice un d er test, a nd α p icture of α typ ical ch aracteristic
for t he semicon ductor type being d iscusse d . Also
i n
cluded
is α list of common measurements w h ic h may be ma de on
2- 26
A PPLICATIO N S
B I P O L A R T RA N SISTO R S
R e q uire d Ty pe 576 Control Settings
Common-
E mitter F amily
t h e given devices with t he Ty pe 576 an d α brief set of
instructions on h ow to ma k e each of t h ese measurements .
T h is
section
h as
been written with t h e assum p tion t h at
t
h
e rea
d
er is familiar with t he operation of t h e Ty pe 576 as
described at
t
h
e beginning of t h e Op erati n g Instructions . It
is also assume d t h at t h
e reader
is
familiar wit h t he p ara-
meters
bei
n g
d
iscusse d . If an ex p lanation or furt h er infor-
mation
about
semicon ductor p arameters and t h eir measure-
ment is need
e
d ,
refer
to t h
e
Te ktronix M
easurement Con-
cep ts boo k title d S EM ICON D U CTO R DEV IC E ME AS URE-
M ENTS w h ic h h as been included as α standard accessory
with t h e Ty p e 576 .
IC
vs . νςΕ for
diffe r en t val u es of
113
~ Γ-sp
DN ιι Α
ΥμΡ
z
DIV
ι ν
ΡΕΝ
:2
Ρ
} ι Α
Control Re quired Setting
H O R IZO N TA L CO LLE CTO R
P O L A R ITY +(
ΝΡΝ ) or -( ΡΝΡ ) d e pen d ing on t h e
transisto r ty pe
PEAK P O WER W ATTS
L ess t h an maximum p ower rating of d evice
A M PL IT
U
DE Curre n t ste p s
ST EP S P ressed
w hen using low base current
PUL S E D STEP S P ressed w hen
using h ig h base current
Terminal Selector
E M
ITT ER GR O UN
D E D BAS E T E R M STEP
G EN for commo
n -emitter family
BAS E G R OUN D E D EMITTER TE RM STEP
G EN for common-base family
O FF S ET AID presse d if more t h an 10 ste p s are
d esire d