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422-ADA Fine tip curved tweezers - ESD safe - 120mm
422-ADA Fine tip curved tweezers - ESD safe - 120mm
US$6.92
When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers. These are a great pair of every-day tweezers. They're anti-static, anti-magnetic and made of hard stainless steel.
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149-ADA Solder wick - 3S 5ft.
149-ADA Solder wick - 3S 5ft.
US$5.25
5ft spool - Used along with the solder sucker to clean up soldering messes. Wick really comes in handy when soldering or desoldering surface-mount parts. Even if you don't have the best iron for SMT work, a bit of wick will fix it up.
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421-ADA Fine tip straight tweezers - ESD safe - 135mm
421-ADA Fine tip straight tweezers - ESD safe - 135mm
US$6.92
When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers. These tweezers are a great pair of every-day tweezers. They're anti-static, anti-magnetic and made of hard stainless steel.
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147-ADA Multi-size wire stripper & cutter
147-ADA Multi-size wire stripper & cutter
US$12.17
We've upgraded our basic 'adjustable' wire strippers to these multi-sized wire strippers. They include: 22-30 AWG strippers, wire cutters, 'plier' tips, and a wire loop. Ground blades for precision cutting. Spring return, comfy molded handles and a closing-lock. 
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1209-ADA ESD-Safe PCB Cleaning Brush
1209-ADA ESD-Safe PCB Cleaning Brush
US$5.17
If you want to have a nice clean board (or maybe you're doing some repair) you can use this stiff-bristled brush without worries. Some people like to drip a little rubbing alcohol on their PCBs after soldering and then scrubbing to remove rosin/flux. Finally, you have the right tool for the job. About 7" long from end to end, scrubby part is 1.5" x 0.5" with 0.5" bristles.
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851-ADA SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable
851-ADA SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable
US$6.08
This RF adapter cable is super handy for anyone doing RF work. Often times, small electronics save space by having a pick-and-placeable u.FL connector (also called uFL, IPEX, IPAX, IPX, MHF, and AM). But most antennas have SMA or RP-SMA connectors on them. This little cable will bridge the two! 
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920-ADA SMA Jack to RP-SMA Plug RF Adapter
920-ADA SMA Jack to RP-SMA Plug RF Adapter
US$6.03
This RF adapter bit is great for anyone doing RF work. Depending on the dev-board and antenna you have, you may be faced with either RP-SMA or SMA connectors. Unfortunately they are not compatible! This adapter solves the problem with an SMA jack on one end and an RP-SMA Plug on the other.
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945-ADA 2.4GHz Dipole Swivel Antenna with RP-SMA - 5dBi
945-ADA 2.4GHz Dipole Swivel Antenna with RP-SMA - 5dBi
US$13.79

This 8"/200mm long swivel dipole antenna has 5dBi of gain and 50Ω impedance so it will work fantastically with just about any 2.4-2.5GHz wireless receiver/transmitter such as: 2.4GHz Wi-Fi (802.11b/g/n), 2.4GHz XBee, Bluetooth, Other 2.4GHz transceivers.

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919-ADA RP-SMA Jack to SMA Plug RF Adapter
919-ADA RP-SMA Jack to SMA Plug RF Adapter
US$6.03
This RF adapter bit is great for anyone doing RF work. Depending on the dev-board and antenna you have, you may be faced with either RP-SMA or SMA connectors. Unfortunately they are not compatible! This adapter solves the problem with a RP-SMA jack on one end and an SMA Plug on the other.
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587-ADA EL wire starter pack - Red 2.5 meter (8.2 ft)
587-ADA EL wire starter pack - Red 2.5 meter (8.2 ft)
US$34.92

This project pack contains: 2.5 meters (over 8 ft) of high-brightness, long-life EL wire in Red, Pocket EL inverter runs on 2 AA Alkaline or rechargeable batteries (not included), 2 inches of heat shink, both 1/8" and 1/4", 2 inches of copper tape, 2 inches of foam tape.

Delivery within 2-3 weeks
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410-ADA High Brightness White Electroluminescent (EL) Wire - 2.5 meters
410-ADA High Brightness White Electroluminescent (EL) Wire - 2.5 meters
US$21.00
We've got 2.6mm thickness EL wire, with a pinkish coat, pre-cut and soldered to a standard quick-connect EL wire. It is made with the latest technology and twice as bright as 'standard' 2.3mm EL - running it at 1.5KHz/90V it emits 115 cd/m^2 or light and a half-life (50% brightness reduction) after 3000 hours of continuous use.
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1283 SMT Test Socket - SOIC-16 Narrow Breakout
1283 SMT Test Socket - SOIC-16 Narrow Breakout
US$38.42
Yeah, that's right, now you can program and test out your favorite new parts in SOIC-16 or smaller packages. This test socket is good for any SOIC/SOP "Narrow" chip in a 150mil wide body that has 16 pins or fewer. Simply press down on the top, place the chip in carefully and then release to latch the chip in.
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1281 SMT Test Socket - SOIC-28 Wide Breakout
1281 SMT Test Socket - SOIC-28 Wide Breakout
US$52.42
Yeah, that's right, now you can program and test out your favorite new parts in SOIC Wide packages. This test sockets is good for any wide (300 mil) SOIC/SOP with up to 28 pins. Simply open the latch, place the chip in carefully and then close the top over it. The chip is held securely against gold 'fingers' in the socket.
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394 Pogo Pins (10 pack) - P75-LM3
394 Pogo Pins (10 pack) - P75-LM3
US$13.13
These particular pins are (in our opinion) ideal because they are skinny enough to fit into proto board or perf board - they have a 1.0mm/0.04" diameter body (the gold part) but the spring contact head is 1.5mm (0.06") wide. The uncompressed length is 16.5mm/0.65", compressed is 14mm/0.55"
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725 Terminal Block - 3-pin 3.5mm - pack of 5!
725 Terminal Block - 3-pin 3.5mm - pack of 5!
US$6.92
These particular 3.5mm terminal blocks are our favorite: big enough for a range of wire gauges, easy to adjust with a screwdriver, and not too chunky. The only down-side is that they do not fit into 2.5mm spaced holes (they're 3.5mm spaced) - but they do fit in most perf/proto-board if you rotate them diagonally.
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373 Breadboard-friendly 2.1mm DC barrel jack
373 Breadboard-friendly 2.1mm DC barrel jack
US$1.67
This power jack is designed to fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project. We went for the more expensive "thin pin" type which snap into breadboards or perfboards.
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610 Panel Mount 2.1mm DC barrel jack
610 Panel Mount 2.1mm DC barrel jack
US$5.17
This power jack is designed to easily attach to a panel up to 8mm thick (0.315" or 5/16") and fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project enclosure.
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724 Terminal Block - 2-pin 3.5mm - pack of 5!
724 Terminal Block - 2-pin 3.5mm - pack of 5!
US$5.17
These particular 3.5mm terminal blocks are our favorite: big enough for a range of wire gauges, easy to adjust with a screwdriver, and not too chunky. The only down-side is that they do not fit into 2.5mm spaced holes (they're 3.5mm spaced) - but they do fit in most perf/proto-board if you rotate them diagonally.
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806 3x8 Male Header - 4 pack
806 3x8 Male Header - 4 pack
US$5.17
Three rows!? Yes! These chunks of 0.1" header has yet-another-row - handy for when you want to connect cables that come in sets of three, like perhaps sensors, or servos. These plug into any standard 0.1" spacing perf-boards or other PCBs and work nicely with our female-ended wire sets.
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562 Panel Mount 10K potentiometer (Breadboard Friendly) - 10K Linear
562-ADA Panel Mount 10K potentiometer (Breadboard Friendly) - 10K Linear
US$1.67
This potentiometer is a two-in-one, good in a breadboard or with a panel. Its a fairly standard linear taper 10K ohm potentiometer, with a grippy shaft. Its smooth and easy to turn, but not so loose that it will shift on its own.
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735 74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter
74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter
US$2.63
The 74LVC245 is designed so that even when it runs at 1.8V, it still happily accepts 5V signals in one pin and converts it to a lower logic level on the opposite pin. This chip is only for digital signals, it doesn't convert analog signals (you need an op amp for that).
Delivery within 2-3 weeks
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550 Little Rubber Bumper Feet - Pack of 4
550-ADA Little Rubber Bumper Feet - Pack of 4
US$1.67
These small sticky bumpers are our favorite accessory for any electronic kit or device. They are sticky, but not impossible to remove. They're small enough to fit onto any board, and have just enough height to give clearance to thru-hole soldered components.
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593 MCP23008 - i2c 8 input/output port expander
593 MCP23008 - i2c 8 input/output port expander
US$3.42
Add another 8 pins to your microcontroller using a MCP23008 port expander. The MCP23008 uses two i2c pins (these can be shared with other i2c devices), and in exchange gives you 8 general purpose pins. You can set each of 8 pins to be input, output, input with a pullup or open drain.
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504 Thru-hole 5-way Navigation switch SKQUCAA010
504 Thru-hole 5-way Navigation switch SKQUCAA010
US$5.68
This navigation switch is an intuitive way to add 5 button's worth of interfacing with a single component. Inside is 5 switches: left, right, up, down and 'select' (pressing down), all with a common ground pin.
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753 0.1uF ceramic capacitors - 10 pack
753 0.1uF ceramic capacitors - 10 pack
US$3.42
A 0.1uF capacitor right next to the VCC pin of your chips will improve stability by filtering out power supply spikes and noise that can cause flaky behavior. We love these little guys, they have 0.1" spacing so fit into any perf or breadboard, compact and good quality.
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977 TO-220 Clip-On Heatsink
977 TO-220 Clip-On Heatsink
US$1.32
977 Adafruit TO-220 Clip-On Heatsink Get the most out of your regulators, transistors and other TO-220 packaged chips by clipping on a heat-sink. Your...
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816 3x4 Right Angle Male Header - 4 pack
816 3x4 Right Angle Male Header - 4 pack
US$5.17
Three rows in a right angle header!? Yes! These chunks of 0.1" header has yet-another-row - handy for when you want to connect cables that come in sets of three, like perhaps sensors, or servos. These plug into any standard 0.1" spacing perf-boards or other PCBs and work nicely with our female-ended wire sets.
Delivery within 2-3 weeks
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804 PS/2 Wired Connector - Panel Mount MiniDIN-6
804 PS/2 Wired Connector - Panel Mount MiniDIN-6
US$12.47
This connector is sturdy and easy to panel mount, and has pre-soldered wires connected to the 6 contacts (of which 4 are used).
Delivery within 2-3 weeks
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383 40-pin ZIF socket
383 40-pin ZIF socket
US$7.00
This socket is designed for DIP chips of up to 40 pins and up to 0.6" wide. So really, its good for any size chip you'll find. What's nice about it is it can snap into an existing circuit board or socket that is designed for a 40-pin 0.6" chip so you may not have to redesign the board! This socket is gold plated so it will last a long time.
Delivery within 2-3 weeks
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1134 Breadboard-friendly MIDI Jack (5-pin DIN)
1134 Breadboard-friendly MIDI Jack (5-pin DIN)
US$3.07
They're what you see on the back of nearly every synthesizer and drum machine. These are nice sturdy jacks, and breadboard-friendly, with all the pins on 0.1" spacing for easy wiring.
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366 2mm 10 pin socket header (for XBee)
366 2mm 10 pin socket header (for XBee), pack of 2
US$1.75
XBees are so cute and tiny but if you're using them in a circuit you'll be annoyed to find that your classic 0.1" headers don't fit them! That's because they use 2mm spacing instead of 2.54mm spacing. That's why you need a special socket like this one.
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888 Aluminum iPhone 4S 0.8mm 5-Point Star/Pentalobe Screwdriver
888 Aluminum iPhone 4S 0.8mm 5-Point Star/Pentalobe Screwdriver
US$17.42
The body is made from a single piece of aluminum and has nice knurled grips. The end-cap rotates so you can keep the body steady while rotating. The tip is nicely machined and is magnetic so it holds the miniscule screws in place while inserting/removing them.
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