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74LS Series-Dip Package
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74LS644
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GT2.5
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MXL
XL
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Circuit Breakers B7000 Push Button Thermal
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Fuse Kits
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ABC Fast Blow Ceramic (1.25" x .25") Fuses
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Compact Slow Blow 3.6 x 10 mm Single Pigtail Fuse
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GMA Fast Blow Fuse Axial Leads
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Lamp Fuses
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JGA25-2418 Series
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JGA25-370 Series
JGB37-3530 Series
JGB37-520 Series
JGY370 Series
Miscellaneous
Pololu
Micro Metal Gearmotors
12V High-Power Carbon Brush (HPCB)
6V High-Power (HP)
6V High-Power Carbon Brush (HPCB)
6V Low-Power (LP)
6V Medium-Power (MP)
Micro Metal Gearmotors with Extended Motor Shafts
Mini Metal Gearmotors
Plastic Gearmotors
Miscellaneous
Motor Brackets
Motor Controllers
Propellers
Servo Cables
Servo Motors
Servo Motors - Feetech
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Solar Motors
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Nema 14
Nema 17
Nema 23
Nema 34
Pancake
Vibration Motors
Pumps
Relays
Automotive
DIN Rail Mounted Relay Modules
General Purpose 10A-15A
General Purpose 25A-30A
General Purpose 2A-5A
Latching Relays PCB MTG
Miscellaneous
PCB MTG 10A-15A
PCB MTG 1A-2A
PCB MTG 20A-30A
PCB MTG 3A-8A
Reed Relays
Relay Modules/ Shields
Relay Sockets
SIP Relays
Solid State Relays
Solenoids
Air Solenoids
Automation Solenoids
Electromagnetic Solenoids
Linear Solenoids
Liquid Solenoids
Push-Pull Solenoids
Rotary Solenoids
Switches
Arcade/Game Switches
Binary Switches
Button Pads
Cord Switches
DIP Switches
Emergency Switches
Keylock Switches
Kits
Knife Switches/Contact Key
Magnetic Reed Switches
Miscellaneous
Multidirection
Optical Switches
Pushbutton Switches
Pushbutton Switches-LED
Latching
Momentary
Rocker Switches
Rotary Encoders
Rotary Switches
2-Position Latching
2-Position Momentary
3-Position Latching
3-Position Momentary
Misc
Slide Switches
Snap Action Switches
Switch Modules/ Breakout boards
Switch with Inlet Socket
Tactile Switches
Tilt Switches
Toggle Switches
Toggle Switches Heavy Duty GC
Toggle Switches Medium Duty GC
Thermal Printers
Timers
Tubing
Heat Shrink Tubing
Heat Shrink Tubing - Black
Heat Shrink Tubing - Black - 100FT
Heat Shrink Tubing - Blue
Heat Shrink Tubing - Clear
Heat Shrink Tubing - Green
Heat Shrink Tubing - Guns
Heat Shrink Tubing - Kits
Heat Shrink Tubing - Red
Heat Shrink Tubing - White
Heat Shrink Tubing - with Glue
Heat Shrink Tubing - Yellow
Polyurethane Tubing
Silicone Tubing
Enclosures/Boxes
Aluminum Boxes
Arduino
BeagleBone
Miscellaneous
Modular Storage Boxes
Plastic Boxes
Project Box with Protoboard
Raspberry Pi
Stanley Boxes
Utility Component Box
Velleman
Hardware
American Hardware Kits
American Hardware- Nickel Plated Flat Washers
American Hardware- Nickel Plated Nuts
American Hardware- Round Phillips Head Screws
American Hardware- Split and Star Lock Washers
Circuit Board Supports
Computer Hardware
Countersunk Screws
DIN Rails
Eagle Keystone
Nuts
Other
Screws
Spacers
Standoffs - F/F
Standoffs - M/F
Standoffs - M/M
Hexagonal Screws
6-32 Socket Head Screws
M2 Screws, Nuts and Washers
M2.6 Screws, Nuts and Washers
M3 Screws, Nuts and Washers
M4 Screws, Nuts and Washers
M5 Screws, Nuts and Washers
M6 Screws, Nuts and Washers
M8 Screws, Nuts and Washers
Lugs
Metric Grub/Set Screws
M4
M6
Metric Hardware Kits
Assortment
Clamps
Inserts
Nuts
Rivets
Screws/ Bolts
Spacers/ Standoffs
Washers
Metric Hardware- Nickel Plated Flat Washers
Metric Hardware- Nuts
Metric Hardware- Round Phillips Head Screws
Metric Hardware- Split and Star Lock Washers
Padding and Insulation
Pan Head Screws - M3
Rubber Feet
Rubber Grommets
Seals and Gaskets
Self Tapping Screws
Set Screws
Snap-In Bushings
Snap-In Hole Plugs
Spacers
Aluminum Spacers
Nylon Spacers
Standoffs
Standoffs - Aluminum F/F
Standoffs - Aluminum M/F
Standoffs - Brass F/F
Standoffs - Brass M/F
Standoffs - Nylon F/F
Standoffs - Nylon M/F
Tap and Die
Tie Mounts
Home Automation
Interconnects
Connectors/ Adapters
Audio Adapters/Jacks/Plugs
Automotive Connectors
Aviation Connectors
BNC Connectors and Adapters
Box Header Connectors
Card Edge Connectors
Centronics Connectors
Connector Housing
D-SUB Connectors
Crimp Pins
D-Sub Connector - High Density (Right Angle)
D-Sub Connectors (Right Angle - PC Mount)
D-Sub Connectors - Crimping Type
D-Sub Connectors - Solder Type
D-Sub Custom Adaptor Housing
D-Sub PC Mount Connectors
D-Sub Tools
Hardware for D-Sub Connectors & Hoods
High Density D-Sub Connectors
Hoods
DC Power Jacks/Plugs
DIN Connectors
F Connectors and Adapters
FAKRA
Fiber Optic
HDMI
Headers
Female
Kits
Male
IDC Connectors
Flat Ribbon IDC Connectors
IDC Card Edge Connectors
IDC Centronics Ribbon Connectors
IDC DIP Flat Cable Plugs
IDC Socket Connectors
IDC Tools
Transition Plugs for Flat Ribbon Cable
JST Connectors
JST-DS
JST-GH
JST-PH
JST-RCY
JST-SH
JST-SM
JST-VH
JST-XH
JST-ZH
Locking Connectors
M12 Connectors
Miscellaneous
Molex Compatible
N Connectors and Adapters
Network Connectors
POGO Pins
Power Connector Housing
.062" Power Connector Housing
.093" Connector Housing
.093" Power Connector Housing
Anderson Power
Combo Packs
Crimp Tools
EC Connectors
Female Sockets
Male Pins
Miscellaneous
XT Connectors
Power Plugs/Jacks
Qwiic
RCA Adapters/Jacks/Plugs
SMA Connectors and Adapters
SMB Connectors
Solar Connectors
Telephone Connectors
TNC Connectors and Adapters
Twinax Connectors and Adapters
UHF Connectors and Adapters
USB
XLR Connectors Adapters
Networking/Telecom
Ethernet RJ45 Terminal Blocks
Modular Adapters/Couplers
Modular Plugs/Jacks
Pneumatic Fittings
HVFF
PE
PG
PK
PU
PV
PY
PZA
Sockets
DIP Header Plugs
Gold Pin Sockets
Machine Tooled Low Profile Sockets
Memory Card Sockets
Miscellaneous
Oscillator Sockets
PGA/PLCC Sockets and Carriers
SIMM Sockets
SIP Sockets
Socket Kits
Standard Tin Low Profile Sockets
Surface Mount to Dip
Transistor Sockets
Wire Wrap ID
Wire Wrap Sockets
ZIF Sockets
Terminals/Blocks/Barrier
Barrier Strips
Solderless Terminals
Bullet Sockets
Bullet Terminals Male
Butt Type Terminals
Close End-White Color Covering
Female Plugs - 0.187" Series
Female Plugs - 0.250" Series
Flag Disconnect
Flanged Block Spades - Vinyl Insulated
Flat Socket with Branch Terminals
Fully Insulated Quick Connect Female Terminals
Fully Insulated Quick Connect Male Terminals
Hook Stud Insulated
Insulated Solderless Ring Type, 12-10AWG
Insulated Solderless Ring Type, 16-14AWG
Insulated Solderless Ring Type, 22-16AWG
Insulated Solderless Spade Type, 16-14AWG
Insulated Solderless Spade Type, 22-16AWG
Male Plugs - 0.250" Series
Non-Insulated Quick Connect Female Terminals
Non-Insulated Quick Connect Male Terminals
Non-Insulated Solderless Ring Type
Non-Insulated Solderless Spade Type
Spade Terminals, 12-10AWG
Speaker Terminals
Splice Connectors
Spring Terminals
Terminal Blocks
15 AMP Dual Row Terminal Blocks, 600V
25 AMP Dual Row Terminal Blocks, 600V
30 AMP Dual Row Terminal Blocks, 300V
30 AMP Dual Row Terminal Blocks, 600V
75 AMP Dual Row Terminal Blocks
DePluggable PC Mount Male Header Sockets
Din Rail Terminal Blocks
Heavy Duty 30 AMP Dual Row Terminal Blocks
Horizontal Female DePluggable Terminal Blocks
Screw Terminal Blocks
Screw Terminal Blocks Stackable
Terminal Block Jumpers
Vertical Female DePluggable Terminal Blocks
Twist On Wire Nut Connectors
Wire Ferrules
Opto/Illumination
4N Series
6N Series
Bargraph Displays
EINK/ EPAPER
1.02"-2.2"
2.3"-4.3"
4.4"-13.3"
Driver Boards
Electroluminescent Wire
Flash Tubes
Household/Commercial Lighting
Infrared Optics
Lamps
LED Cluster Lamps S.B.
Bayonet DC G6
Bayonet DC S8
Bayonet Pilot Lamps
Bayonet Screw G3 1/2 Lamps
Bayonet Screw G4 1/2 Lamps
Flashlight Bulbs B3 1/2
Lamp Sockets, Boards
Lamps With Leads
LED Bulbs T1
LED Bulbs T3 1/4
LED Bulbs T5 Wedge Base
LED Lamps S.B. 120V AC/DC T3 1/4 (10mm) Bayonet
LED Lamps T3 1/4 (10mm) Bayonet
LED Lamps T3 1/4 (10mm) Screw
LED Lamps T3 1/4 (10mm) Super Bright Bayonet
Screw Pilot Lamps
Specialty Lamps
T1 3/4 Bulb Lamps
Lasers
LCDs & Displays
Accessories
Character
Graphic TFT
LCD/AMOLED/OLED Displays
0.9"-2.4"
2.8"- 4.3"
5"-15.6"
QLED Displays
Retina
LED Controllers/Dimmers/Sensors
LED Displays - Other
LED Displays - Segmented
LED Dotstar
LED Filament
LED Indicators
LED Indicators-10mm
LED Indicators-12mm
LED Indicators-16mm
LED Indicators-19mm
LED Indicators-22mm
LED Indicators-6mm
LED Indicators-8mm
Miscellaneous
LED Indicators - Mode Electronics
LED Kits
LED Matrix
LED Mounting Hardware
LED Pixels
Boards
Drivers
NEOPIXEL LEDs
Strips
LED Rings
LED Strings Fairy
LED Strip Connectors/Cables
LED Strips
12V
24V
5V
COB
10 Watts
15 Watts
2 Watts
20 Watts
3 Watts
5 Watts
50 Watts
70 Watts
Miscellaneous
Plant Growing LEDs
LEDs - SMD
0603
0805
1206
1210
5050
5730
Misc
Wired
LEDs - SMD Module 1W-100W
LEDs - Vehicle
LEDs- Bare
10MM LEDs
3MM(T1) LEDs
5MM(T13/4) LEDs
5MM(T13/4) LEDs-12V
Bi-Color/Tri-Color LEDs
Cycling RGB
Flashing LEDs
LEDs with Heat Sinks
Other
Rectangular LEDs
Super Bright LEDs
LEDs- With Wire
MOC Series
Optocouplers/Optoisolators
Photocells
Photoluminescent Panels
Slotted Optical Switches
TIL Series
Passive Components
Capacitors
Capacitor Kits
Capacitor Substitution Box
Ceramic Disc Capacitors
Ceramic Monolithic Capacitors-Axial
Ceramic Monolithic Capacitors-Radial
CK05 Capacitors Series
Electrolytic Capacitors- Axial
Electrolytic Capacitors-Axial-High Voltage
Electrolytic Capacitors-Radial
Electrolytic Capacitors-Radial-High Voltage
Electrolytic Capacitors-Radial-Non Polar
Metal Film Poly Box Capacitors
Metallized Film Capacitors-Axial
Metallized Film Capacitors-Radial
Mica Silver Capacitors
Miscellaneous
Super Capacitors
Surface Mount Capacitors
Tantalum Capacitors-Radial Dipped
Trimmer Capacitors
Chokes/Coils/Inductors
Toroid Inductors
Bobbins
Epoxy Coated Axial Chokes-Micro 434-21 Series
Epoxy Coated Axial Chokes-Miniature 434-22 Series
Epoxy Coated Axial Chokes-Miniature 43LS Series
Epoxy Coated Axial Chokes-Small 434-23 Series
Ferrite Core
Fixed Inductors
Generic
Hammond Chokes & Reactors
Inductor Kits
Miscellaneous
Pluggable Radial Coils-10mm 434-02 Series
Pluggable Radial Coils-11mm 434-03 Series
Pluggable Radial Coils-7mm 434-17 Series
Pluggable Radial Coils-9mm 434-01 Series
Quality Molded Axial Chokes-43HH Series
RF Axial Chokes-43LQ Series
RF Radial Chokes-434-1120 Series
RF Radial Chokes-43LH Series
RF Radial Chokes-43LJ Series
Crystals/Oscillators/Resonators
Crystal Kits
Crystals
Crystals HC/33
Low Profile Crystals HC49/US
Standard Crystals HC/18
Oscillators
Resonators
Surface Mount Crystals
Tuning Fork
Potentiometers
13P Series- Horizontal Slotted Potentiometers
23P Series- Vertical Slotted Potentiometers
3296P Series- 1/2W, Multi-Turn, Square, Side Adjust
3296W Series- 1/2W, Multi-Turn, Square, Top Adjust
3296X Series- 1/2W, Multi-Turn, Square, Side Adjust
3386F Series-1/2W, Single Turn Cermet, Square
3386P Series-1/2W, Single Turn Cermet, Square
3386P Series-1/2W, Single Turn Cermet, with Shaft
3386R Series-1/2W, Single Turn Cermet, Square
3386W Series- 1/2W, Single-Turn, Square, Side Adjust
3590S Series-Rotary Wirewound Potentiometers
43P Series-3/4W, 15 Turn Cermet, Rectangular
91AR Series- Side Adjust Potentiometers
AP Series- 1/2 Watt Analog (Log) Taper
Digital Potentiometers
Linear Taper Dual PCB Mount
Miscellaneous Potentiometers
P Series- 1/2 Watt Linear Taper
P Series- 1/2 Watt Switched
P1W Series- 1 Watt Linear Taper
P2W Series- 2 Watt Linear Taper
P2W Series- 2 Watt Linear Taper- Long Shaft
P5W Series - 5 Watt Linear Taper
RM065 Series
RV09 Series
Slide Potentiometer- PC Mount
Slide Potentiometers- Solder Mount
Variable Speed Drivers
WH5-1A Series
WXD2-53 Series
WXD3 Wirewound
Resistors
1 Watt Carbon Film, 5%
1/2 Watt Carbon Film, 5%
1/2 Watt Metal Film 1% Resistors
1/2 Watt Metal Film 5% Resistors
1/4 Watt Carbon Film, 5%
1/4 Watt Metal Film 1% Resistors
1/4 Watt Metal Film 5% Resistors
1/8 Watt Carbon Film 1% Resistors
1/8 Watt Carbon Film 5% Resistors
10 Watt Cement Wirewound, 5%
100 Watt Resistors
15 Watt Cement Wirewound, 5%
175 Watt Resistors
2 Watt Metal Oxide, 5%
25 Watt Cement Wirewound, 5%
3 Watt Cement Resistors
5 Watt Cement Wirewound, 5%
Current Sense Resistors
DIP-Common Bussed-14 Pins, 13 Resistors
DIP-Common Bussed-16 Pins, 15 Resistors
DIP-Isolated-14 Pins, 7 Resistors
DIP-Isolated-16 Pins, 8 Resistors
Resistor Boxes and Equipment
Resistor Color Code Chart
Resistor Kits
SIP-Common Bussed-10 Pins, 9 Resistors
SIP-Common Bussed-6 Pins, 5 Resistors
SIP-Common Bussed-8 Pins, 7 Resistors
SIP-Isolated-10 Pins, 5 Resistors
SIP-Isolated-6 Pins, 3 Resistors
SIP-Isolated-8 Pins, 4 Resistors
Surface Mount Resistors
Thermistors
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BK Precision Non Programmable Single Output
BK Precision Programmable Single Output
BK Precision Triple Output
Elenco
Extech
EZ Digital
Global Specialties
Instek
Velleman
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Audio Transformers
Miniature Audio Transformers - 200mW Max Output
Miniature Audio Transformers-75mW Max Output
Computer Power Supply
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DIN Rail Switching Power Supply
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12V
24V
36V
48V
5V
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Open Frame Non-CT Transformers
Wall Transformers/Adapters
AC/AC Adapters
AC/DC TableTop Power Adapters - 36V
AC/DC TableTop Power Adapters - 48V
AC/DC TableTop Power Adapters- 12V
AC/DC TableTop Power Adapters- 15V
AC/DC TableTop Power Adapters- 19V
AC/DC TableTop Power Adapters- 24V
AC/DC TableTop Power Adapters- 5V
AC/DC TableTop Power Adapters- Selectable
AC/DC Wall Power Adapters - 15V
AC/DC Wall Power Adapters - 18V
AC/DC Wall Power Adapters - 24V
AC/DC Wall Power Adapters - 36V
AC/DC Wall Power Adapters - 48V
AC/DC Wall Power Adapters- 12V
AC/DC Wall Power Adapters- 5V
AC/DC Wall Power Adapters- 6V
AC/DC Wall Power Adapters- 9V
AC/DC Wall Power Adapters- POE
AC/DC Wall Power Adapters- Selectable
AC/DC Wall Power Adapters- USB
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DC Gear Motors (Brushed)
5202 Series Yellow Jacket Planetary Gear Motors
5203 Series Yellow Jacket Planetary Gear Motors
5204 Series Yellow Jacket Planetary Gear Motors
Econ Spur Gear Motors
HD Premium Planetary Gear Motors
Mini Econ Spur Gear Motors
N20 Gear Motors
Precision Spur Gear Motors
Premium Planetary Gear Motors
Standard Spur Gear Motors
TT Gear Motors
Gears
Hub Mount Spur Gears
Servo Gears
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Worm Gears
Hub Mount Wheel
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M4 Threaded Rod
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Shafting
D Shaft - Stainless Steel 1/4"
Round Shaft - Stainless Steel - 1/4" D
Round Shaft - Stainless Steel - 1/8" D
Round Shaft - Stainless Steel - 3/16" D
Round Shaft - Stainless Steel 1/2" D
Round Shaft - Stainless Steel 3/8" D
Round Shaft - Stainless Steel 5/16" D
Sprocket and Chain
Timing Belts & Pulleys
2mm GT2
2mm GT2 Timing Belt Accessories
2mm GT2 Timing Belts
2mm GT2 Timing Pulleys
3mm HTD
3mm HTD Timing Belt Accessories
3mm HTD Timing Belts
3mm HTD Timing Pulleys
5mm HTD
5mm HTD Timing Belt Accessories
5mm HTD Timing Belts
5mm HTD Timing Pulleys
XL (0.20") Series
Belts-XL Series 3/8"
XL Series Timing Belt Accesssories
XL Series Timing Pulleys
Wheel Accessories
Structure
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Ball Bearings
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1101 Series U-Beams
1102 Series Flat Beams
1103 Series L-Beams
1106 Series Square Beams
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U-Brackets
Channel - Actobotics U-Channel
Channel - goBILDA 1121 Series Low-Side U-Channel
Channel-goBILDA 1120 Series U-Channel
Channel-goBILDA® 1143 Series Mini Low-Side U-Channel
Clamping Mounts
Electronic Mounts
Grid Plates
Motor Mounts
for 25mm Pattern Motors
for 5200 Series Spur Gear Motors
for 5201 Series Spur Gear Motors
for 5202 Series Gear Motors
for 5203 Series Gear Motors
for 5204 Series Gear Motors
for Econ Spur Gear Motors
for HD Premium Planetary Gear Motors
for Mini Econ Spur Gear Motors
for N20 Gear Motors
for NeveRest Classic Gear Motors
for NeveRest Orbital 20 Gear Motors
for Precision Spur Gear Motors
for Premium Planetary Gear Motors
for REV Core Hex Gear Motors
for REV HD Hex Planetary Gear Motors
for REV HD Hex Spur Gear Motors
for REV UltraPlanetary Gearbox
for Standard Spur Gear Motors
for Stepper Motors
for Tetrix Max Gear Motors
for Tetrix TorqueNADO Gear Motors
for TT Gear Motors
Pattern Mounts
Pattern Plates
Round Standoffs
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Spacers - Shafting & Tubing
Surface Mounts
T-Slot Extrusion
1109 Series goRAIL
1118 Series Open goRAIL
goRAIL Accessories
Tubing
Tubing - Aluminum 1" OD
Tubing - Aluminum 1/2" OD
Tubing - Aluminum 10mm OD
Tubing - Aluminum 12mm OD
Tubing - Aluminum 14mm OD
Tubing - Aluminum 3/8" OD
Tubing - Aluminum 32mm OD
Tubing - Aluminum 5/8" OD
Tubing - Aluminum 8mm OD
Tubing - Carbon Fiber
Tubing - Stainless Steel 1" OD
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26LS Series
4000 Series- Dip Package
6300/6400/6500 Series
6800 Series
68000 Series
74 Series-Dip Package
74ACT Series-Dip Package
74ALS Series-Dip Package
74C Series-Dip Package
74F Series-Dip Package
74HC Series-Dip Package
74HCT Series-Dip Package
74HCTLS Series-Dip Package
74LS Series-Dip Package
74S Series-Dip Package
8000 Series
9000 Series
Analog Devices
AT89C Series
ATMEL 29C/29F/28F Series
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CA Series
Clock Circuits & 5000 Series
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Dallas Semiconductor
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Zener 1 Watt (1N4728A-1N4764A)
Zener 400MW (1N746A-1N759A)
Zener 5 Watt (1N5333B-1N5378B)
Zener 500MW (1N5221B-1N5271B)
Disk Controllers
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GALs
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Retractable Sheath Banana Plug Patch Cord
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12 AWG Stranded TEW Hookup Wire - 100FT
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14 AWG Stranded TEW Hookup Wire - 100FT
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16 AWG Stranded TEW Hookup Wire - 25FT
16 AWG Stranded TR64 Hook-Up Wire - 1000FT
16 AWG Stranded TR64 Hook-Up Wire - 100FT
18 AWG Solid TR-64 Hook-Up Wire - 1000FT
18 AWG Stranded TEW Hookup Wire - 25FT
18 AWG Stranded TR64 Hook-Up Wire - 1000FT
18 AWG Stranded TR64 Hook-Up Wire - 100FT
18 AWG Stranded TR64 Hookup Wire - 25FT
20 AWG Solid TR64 Hook-Up Wire - 1000FT
20 AWG Stranded TEW Hookup Wire - 25FT
20 AWG Stranded TR64 Hook-Up Wire - 1000FT
22 AWG Solid TR64 Hook-Up Wire - 1000FT
22 AWG Solid TR64 Hook-Up Wire - 100FT
22 AWG Stranded TR64 Hook-Up Wire - 1000FT
22 AWG Stranded TR64 Hook-Up Wire - 100FT
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74LS644
Price:
US$
2.09
CODE:
74LS644
Availability:
In stock
Quantity:
+
−
Our quantity discounts:
Quantity
25+
Price
US$
1.81
Add to cart
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Description
74LS644 20 Pin Dip- Octal Bus Transceiver
Notice for California Residents:
WARNING
: Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
WARNING
