Quick Link - Common Laboratory Components

Please see room Bannan 218 for parts not listed.

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Overcurrent Protection


Reference Documents:

An overcurrent event or fault is when the current (amperage) in an electrical circuit exceeds the rated capacity. There are many possible sources for an overcurrent fault such as a short, power cross, surge, etc. These faults can permanently damage the follow-on electronics and may cause serious injury.

Thermal Heat Sinks


Reference Documents:


Aavid Applications Engineering Support
Aavid Thermalloy engineers can assist with the design of heat sinks for both forced and natural convection applications. Frequently we have already encountered a situation similar to yours and may have a solution readily available. If not, we will start from scratch and help you design a cooling strategy uniquely tailored for your application.  

Nuts n Bolts

Printed Circuit Board Manufacture


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Design References

Logic 74xxxx Series



74ls00c224 Quad 2 input NAND gate

74ls85a3e6 4 bit magnitude comparator

741763316 Decade Counter

74ls014aba Quad 2 input NAND gate (OC)

74ls863e01 Quad 2 input XOR gate

741763316Binary Counter

74ls02f56e Quad 2 input NOR gate

74ls90092e Decade counter

74ls191d1e4 4 bit binary up / down counter

74ls035b67 Quad 2 input NAND gate (OC)

74LS91 8-bit shift register

74ls192690d BCD up / down counter

74ls04505f Hex Inverter

74ls90092e Divide by 12 counter

74ls192690d 4 bit binary up / down counter

74ls05ecc6 Hex Inverter (OC)

74ls90092e 4-bit Binary counter

74ls195ebfd 4 bit shift register

74ls066457 Hex Inverter buffer/driver

74ls95da42 4-bit shift register

74ls19679b9 Presettable decade counter

74ls08eb48 Quad 2 input AND

74ls1072c09 Dual JK flip-flops with clear

74ls19679b9 Presettable binary counter

74ls0961a1 Quad 2 input AND gate (OC)

74ls1094a62 Dual JK pos edge trig flip flop

74199 8-bit shift register

74ls103cf7 Triple 3 input NAND gate

74ls112c884 Dual JK neg edge trig flip flop

74ls2211bdb Dual monostable multivibrator

74ls111b94 Triple 3 input AND gate

741217bd2 Monostable multivibrator

74s225d730 16x5 FIFO memory

74ls129d48 Triple 3 input NAND gate (OC)

74ls1231d89 Retriggerable Monostable multivibrator

74ls240fdd2 Octal buffer/line driver

74ls1308c8 Dual 4-input NAND gate Schmitt trigger

74ls1231d89 Retriggerable Monostable multivibrator

74ls2413040 Octal 3-state buffer

74ls14cff4 Hex Inverter Schmitt trigger

74ls12576fe Quad 3-state Buffer

74ls240fdd2 Octal buffer/line driver

74ls153314 Triple 3 input AND gate (OC)

74ls132dc34 Quad 2 input NAND gate Schmitt trigger

74ls2458a9d Octal bus transceiver

74ls164b63 Hex Inverter (OC)

74ls133d5c7 13 input NAND

74ls2517bfc Data selector / MUX

74LS20 Dual 4 input NAND gate

74ls13656d0 Quad 2 input XOR (O.C)

74ls2578e23 Quad 2 input mux 3-state

74ls21590f Dual 4 input AND gate

74ls138f9da 3-to-8 line decoder/demux

74ls2595194 8 bit addressable latch

74ls2263b6 Dual 4 input NAND gate (OC)

74ls13969bd Dual 1-of-4 decoder/demux

74ls2664e75 Quad 2 input XNOR (O.C)

7425fec4 Dual 4 input NOR gate with strobe

74ls138f9da 10 line - 4 line octal priority encoder

74ls2736608 Octal D type flip flop with clear

74ls278351 Triple 3 input NOR gate

74ls138f9da 8 line - 3 line octal priority encoder

74ls2803836 9 bit odd / even parity generator

7425fec4 8 input NAND gate

74150e6fc Data selector/mux

74ls298d54b Quad 2 input MUX with storage

74ls329bf4 Quad 2 input OR gate

74ls1516d03 8 input MUX

74ls299a5ff 8 bit universal shift register

74ls387b99 Quad 2 input NAND gate Buffer (OC)

74ls1533494 Dual 4-to-1 Multiplexer

74ls3231687 8-Bit Shift register

74ls42b427 BCD to DEC decoder

74ls1545606 4-to16 decoder/demux

74ls367749c Hex bus driver

7445ec4e BCD to DEC decoder

74ls15502c0 Dual 2 line to 4 line decoder / demux

74ls367749c Hex bus driver with invereters

74ls472c1d BCD to 7 seg decoder/driver (OC)

74ls15502c0 Dual 2 line to 4 line decoder / demux (O.C)

74ls373bbae Octal transparent latch

74ls4804d2 BCD to 7 seg decoder/driver (OC)

74ls1570797 Quad 2 input MUX

74ls373bbae Octal D type flip flop 3-state

74ls51049a AND/OR/INVERT gate

74ls1570797 Quad 2 input MUX with invereted outputs

74ls39042d4 Dual 4 bit decade counter

74ls54c552 4-wide AND/OR/INVERT gate

74ls1609042 BCD decade counter

74ls393ba36 Dual 4 bit binary counter

74F64 Pos 4-2-3-2 input AND/OR/INVERT gate

74ls1611432 Synchronous 4 bit binary counter

74ls3955a71 4 bit shift register

7470a48b JK flip flop

74ls162d21a BCD decade counter

74ls5404cc0 Octal buffer 3-state

7472ac65 JK M/S flip flop

74ls1611432 Asynchronous 4 bit binary counter

74ls5404cc0 Octal buffer 3-state outputs

74ls73e711 Dual JK flip flop with clear

74ls164e63f 8 bit SIPO shift register


74ls74b7dc Dual D-Type flip-flops with preset and clear

74ls1657c21 8 bit PISO shift register


74ls756fbe 4 bit bi-stable latch

74ls166ee58 8 bit PISO shift register

74ls76b646 Dual JK flip-flops with preset and clear

74ls1743432 Hex D type flip flop with clear

74ls83b778 4 bit full adder

74ls1743432 Quad D type flip flop with clear



EDN microprocessor/microcontroller directory

PIC16F84A3fcb Datasheet Get Started with your first PIC program

Linear ICs, Transistors, Active Components

55549f7 Timer / Oscillator

LM741e968 Op-Amp

uaf42985d Universal Active Filter

PN2222A-NPN77c0 NPN Transistor 2N3904NPN51b1 NPN Transistor 2N3906PNP082d PNP Transistor
mpq222210c1 NPN Transistor MPQ2907A-QUAD-PNP4910 PNP Transistor 2N3819 JFETdeb3 JFET

Logic Level FET
60V 48A N-Channel,
0.025ohm Rds @5Vgs

Logic Level FET
-20V 24A P-Channel,
0.05ohm Rds @4.5Vgs




ISD1700h40f9 Single Chip Voice Record and Playback.

More similar products-datasheets | other fab

This is a very basic hobby project and can take less than an hour.


LED Polarity

7-Segment Display

TIL-321A 7-SEGMENTf51e

Other reference:  


Polarized Capacitors



Capacitors having a value of about 0.47 micro-farad or greater are often Electrolytic or Tantalum (polarized) types. This means that it is very important how they are connected. Polarized capacitors are almost always marked with the polarity on the body of the component. If the two capacitor leads are of different lengths then the longer of the two is usually the + (positive) terminal. Only non-polarized capacitors may be fitted to the breadboard or PCB either way, in the same way as resistors.

Surest way to damage an electrolytic capacitor is to reverse polarity at working voltage, self-destruction will occur and violent.

Use safety glasses and keep eyes and body parts away when applying power for the first time to a circuit that includes polarized capacitors. Discard any damaged parts.

General Capacitor Marking Table

IMPORTANT: Capacitors with values below 100 pf may be marked two ways: Either with just two digits (22 pF = "22") or three digits (22 pF = "220",). In the latter case the third digit signifies the number of zeros following the first two digits. "220" = 22 pF, "221" = 220 pF, "222" = 2200 pF.

1pf; 3pf; 5pf 1; 3; 5

2.7, 3 or 3.3 pF can be interchanged with each other.

4.7 or 5 pF can be interchanged with each other.

2.7, 3 or 3.3 pF can be interchanged with each other.

4.7 or 5 pF can be interchanged with each other.

2.7, 3 or 3.3 pF can be interchanged with each other.

4.7 or 5 pF can be interchanged with each other.

2.7, 3 or 3.3 pF can be interchanged with each other.

4.7 or 5 pF can be interchanged with each other.

10 pf 10or 100 0.001 uF 102 0.10 uF 104
12 pf 12or 120 0.0012uF (1200pf) 122 0.12 uF 124
15 pf 15or 150 0.0015uF 152 0.15 uf 154
18or 180 0.0018 uF (1800pf) 182 0.18 uF 184  
22 pf 22or 220 0.0022uF 222 0.22 uF 224
27 pf 27or 270 0.0027uF 272 0.27 uF 274
33 pf 33or 330 0.0033 uF 332 0.33 uF 334
39 pf 39or 390 0.0039uF 392 0.39 uF 394
47 pf 47or 470 0.0047uF 472 0.47 uF 474
58 pf 58or 580 0.0056uF 562 0.56 uF 564
68 pf

68or 680

0.0068uF 682 0.68 uF 684
82 pf 82or 820 0.0082uF 822 0.82 uF 824
100 pf 101 0.01 uF 103 1uF 105 or 1uf
120 pf 121 0.012 uF 123    
150 pf 151 0.015 uF 153    
180 pf 181 0.018 uF 183    
220 pf 221 0.022 uF 223    
270 pf 271 0.027 uF 273    
330 pf 331 0.033 uF 333    
390 pf 391 0.039 uF 393    
470 pf 471 0.047 uF 473    
560 pf 561 0.056 uF 563    
680 pf 681 0.068 uF 683    
820 pf 821 0.082 uF 823    


Resistors, Potentiometers, & Trimmers


Through-Hole Resistors

Four-color-band axial resistors
Main article: Electronic color code
Four-band identification is the most commonly used color coding scheme on all resistors. It consists of four colored bands that are painted around the body of the resistor. The scheme is simple: The first two numbers are the first two significant digits of the resistance value, the third is a multiplier, and the fourth is the tolerance of the value. Each color corresponds to a certain number, shown in the chart below. The tolerance for a 4-band resistor will be 1%, 5%, or 10%

5-color-band axial resistors
5-band identification is used for higher precision (lower tolerance) resistors (1%, 0.5%, 0.25%, 0.1%), to notate the extra digit. The first three bands represent the significant digits, the fourth is the multiplier, and the fifth is the tolerance. 5-band standard tolerance resistors are sometimes encountered, generally on older or specialized resistors. They can be identified by noting a standard tolerance color in the 4th band. The 5th band in this case is the temperature coefficient


Surface Mount Resistors (SMT)

SMT resistors
This image shows two surface mount resistors
Surface mounted resistors are printed with numerical values in a code related to that used on axial resistors. Standard-tolerance Surface Mount Technology (SMT) resistors are marked with a three-digit code, in which the first two digits are the first two significant digits of the value and the third digit is the power of ten (the number of zeroes).

For example:
"334" = 33 × 10,000 ohms = 330 kiloohms
"222" = 22 × 100 ohms = 2.2 kiloohms
"473" = 47 × 1,000 ohms = 47 kiloohms
"105" = 10 × 100,000 ohms = 1 megaohm

Resistances less than 100 ohms are written: 100, 220, 470. The final zero represents ten to the power zero, which is 1. For example:
"100" = 10 × 1 ohm = 10 ohms
"220" = 22 × 1 ohm = 22 ohms
Sometimes these values are marked as "10" or "22" to prevent a mistake.

Resistances less than 10 ohms have 'R' to indicate the position of the decimal point (radix point). For example: "R003" = 0.003 ohms. This is very small value, generally used in current sense applications.
"4R7" = 4.7 ohms
"0R22" = 0.22 ohms
"0R01" = 0.01 ohms

Precision resistors are marked with a four-digit code, in which the first three digits are the significant figures and the fourth is the power of ten. For example:
"1001" = 100 × 10 ohms = 1 kiloohm
"4992" = 499 × 100 ohms = 49.9 kiloohm
"1000" = 100 × 1 ohm = 100 ohms

"0", "000", and "0000" sometimes appear as values on surface-mount zero-ohm links, since these have (approximately) zero resistance.

Potentiometer - Trimmers


Precision Multi-Turn

Crystals & Oscillators


Manufactures: |  








SMD Code Database


SMD Socket Adapters & Test Clips