HP TM 11-6625-2779-14&P manual Section Replaceable Parts Introduction, Ordering Information

Model 3555B Section VI

SECTION VI

REPLACEABLE PARTS

6-1. INTRODUCTION.

6-2. This section contains information for ordering replacement parts. Table 6-1lists parts in alphameric order of their reference designators and indicates the description, -hp- part number of each part, together with any applicable notes, and provides the following:

a.Total quantity used in the instrument (TQ column). The total quantity of a part is given the first time the part number appears.

b.Description of the part. (See list of abbreviations below.)

c.Typical manufacturer of the part in a five- digit code. (See Appendix A for list of manufacturers.)

d.Manufacturer's part number.

6-3. Miscellaneous parts are listed at the end of Table 6-1.

6-4. ORDERING INFORMATION.

6-5. To order a part, note the manufacturer's part number (Table 6-1,MFR PART NO.) and then cross reference that number in the cross-reference index (Table 6-2).Order the part through normal channels. If the NSN is not listed for the part in Table 6-2,order by MFR PART NO. and the manufacturer's identification number listed under the MFR number in Table 6-1.

ABBREVIATIONS

Ag	silver
Al	aluminum
A	ampere(s)
Au	gold
C	capacitor
cer	ceramic
coef	coefficient
com	common
comp	composition
conn	connection
dep	deposited
DPDT	double-pole double-throw
DPST	double-pole single-throw
elect	electrolytic
encap	encapsulated
F	farad(s)
FET	field effect transistor
fxd	fixed

.................................................................

GaAs	.............................gallium arsenide
GHz	gigahertz = 10+9 hertz
gd	guard(ed)
Ge	germanium
grd	ground(ed)
H	henry(ies)
Hg	mercury
Hz	hertz (cycle(s) per second)

ID	inside diameter
impg	impregnated
incd	incandescent
ins	insulation(ed)
kΩ	kilohm(s) = 10+3 ohms
kHz	kilohertz = 10+3hertz
L	inductor
lin	linear taper
log	logarithmic taper
mA	milliampere(s) = 10-3amperes
MHz	megahertz = 10+6 hertz
mΩ	megohm(s) = 10+6 ohms
met film	metal film
mfr	manufacturer
ms	millisecond
mtg	mounting
mV	millivolt(s) = 10-3volts
μF	microfarad(s)
μs	microsecond(s)
μV	microvolt(s) = 10-6volts
my	Mylar®
nA	nanoampere(s) = 10-9amperes
NC	normally closed
Ne	neon
NO	normally open
NPO	negative positive zero
..................	(zero temperature coefficient)

ns	nanosecond(s) = 10-9seconds
nar	not separately replaceable
Ω	ohm(s)
obd	order by description
OD	outside diameter
P	peak
Pa	picoampere(s)
pc	printed circuit
pF	picofarad(s) 10-12
	farads
piv	peak inverse voltage
p/o	part of
pos	position(s)
poly	polysterene
pot	potiometer
p-p	peak-to-peak
ppm	parts per million
prec	precision (temperature
........................	coefficient, long term sta-
............................	bility, and/or tolerance)
R	resistor
Rh	rhodium
rms	root-mean-square
rot	rotary
Se	selenium
sect	section(s)
Si	silicon
sl	slide

SPDT	........single-pole double-throw
SPST	single-pole singe-throw
Ta	tantalum
TC	temperature coefficient
TiO2	titanium dioxide
tog	toggle
tol	tolerance
trim	trimmer
TSTR	................................ transistor
V	volt(s)
vacw	alternating current
	working voltage
var	variable
vdcw ..	direct current working voltage
W	watt(s)
w/	with
wiv	working inverse voltage
w/o	without
ww	wirewound

*.............. optimum value selected at factory, average value

shown (part may be omitted)

**.............. no standard type number assigned (selected or special type

®Dupont de Nemours

A	assembly
B	motor
BT	battery
C	capacitor
CT	diode
DL	delay line
DS	lamp
E	misc electronic part
F	fuse

		DECMAL MULTIPLIERS
Prefix	Symbols	Multiplier	Prefix	Symbols	Multiplier
tear	T	1012	centi	c	10-2
giga	G	109	milli	m	10-3
mega	M or Meg	106	micro	μ	10-6
kilo	K or k	103	nano	n	10-9
hecto	h	102	pico	p	10-12
deka	da	10	femto	f	10-15
deci	d	10-1	atto	a	10-18
		DESIGNATORS
FL		filter	Q		transistor
HR		heater	QCR		transistor-diode
IC		integrated circuit	R		resistor
J		jack	RT		thermistor
K		relay	S		switch
L		inductor	T		transformer
M		meter	TB		terminal board
MP		mechanical part	TC		thermocouple
P		plug	TP		test point

TS	terminal strip
V	vacuum tube, neon bulb
	photocell, etc.
W	cable
X	socket
XDS	lampholder
XF	fuseholder
Y	crystal
Z	network

6-1