Tabela-1: Carta de componentes eléctricas e electrónicas
4 Band Resistor
Potentiometer
LED
Symbol
A
(+)
K
(-)
Flat on body flange
Identifies the
cathode.
Cathode
Symbol
Anode
Symbol
Diode
Symbol
Anode
or
A
(+)
K
(-)
or
Cathode
Capacitor (Polarity)
Electrolytic Tantalum Symbol
Capacitor (Non Polarity)
Ceramic
+
-
- +
- +
1st digit of capacitor: 1
2nd digit of capacitor: 5
Multiplier: Multiply the 1st & 2nd
digits by the proper value from
the multiplier Chart.
151K
Symbol
Multiplier
To find the tolerance of
the capacitor, look up
this letter in the
Tolerance columns
Tolerance of Capacitor
For the Number Multiply By :
151k = 15 x 10 = 150 pF
759 = 75 x 0.1 = 7.5 pF
Transistor Packages and Terminal Identification
10
± 0.25 pF
C
100
± 0.5 pF
D
1,000
± 1.0 pF
F
± 1%
4
10,000
± 2.0 pF
G
± 2%
5
100,000
H
± 3%
J
± 5%
2
3
8
0.01
K
± 10 %
9
0.1
M
± 20 %
Introduction to TTL
Introduction to Op-Amps
Example:
(a) TO-92 or TO-226AA (b) SOT-23 or TO-236AB (c) TO-18 or TO-206AA
Package:
D – Glass/Metal Dual-In-Line
SN 74LS76 AN
Package
A 741 general-purpose op amp would be
completely identified in the following way:
(d) TO-46 or TO-206AB
(e) Pin configuration(buttom view).
Emitter is closed to tab.
Prefix
LM
National
(f) Dual metal can
(g) TO-220AB
(h) Dual in-line (DIP)
Over
10pF
Over
10pF
B
1
NOTE: The letter “R” may be used at times to signify a decimal point:
2R2 = 2.2(pF or uF)
Letter
± 0.1 pF
1
0
Examples:
10pF or Less
Designator
741C
General-purpose
op amp, commercial
temperature range
Suffix
N (8-pin)
Plastic
Package
F – Glass/Metal Flat Pack
H – TO-5 (TO-99, TO-100, TO-46)
Device number K – TO-3 (Steel)
Manufacturer
Manufacturers:
SN –
TI Special function
MC –
Motorola
KC – TO-3 (Aluminum)
N – Plastic Dual –In-Line
Device number :
74 – Commercial
AD/OP – Analog Device
54 – Military
MAX –
Maxim
LS – Low Power Schottky
TL –
Taxas Instrument
ALS – Advance Low Power Schottky
LM –
Linear Technology
Fast – Fast Schottky
uA –
Fairchild