Partlist

From DP

Latest revision as of 20:33, 12 June 2013

Where to buy parts. BOLD parts are common, we buy them by the reel and keep them handy in a chest of drawers.

Eagle footprints are in our public domain part library.

Resistors

• Get a cheap resistor kit from eBay so you have all common values available
• 390R, 1K, 2K, 10K, 100K are most common in our projects, we buy them by the reel

Resistors

picture	size	Mouser	Digikey	Farnell
	0603	100R 390R 1.0K 2.0K 3.6K 10K 12K 1% 100K
	0603 x 4 resistor array (1206 total)	82R 10K (concave) 10K (convex) 1M		10K
	0805	1.5R 4.7R 49.9R 82R 100R 180R 390R 1.0K 1.1K 1.6K 2K 2.2K** 2.26K 2.32K 6.8K 10K 11K 12K 1% 15K 18K 20K 39K 47K** 56K 100K	300R 4.7K
	1206	6.8R	6.8R
	3mm SMD potentiometer	10K single turn	10K single turn
	4mm SMD potentiometer	10K single turn	10k single turn
	6mm PTH potentiometer	10K single turn	10k single turn

• Rectangular passive components
  • 0402 (1005 metric) : 0.04" × 0.02" (1.0 mm × 0.5 mm) Typical power rating for resistors 1/16 watt
  • 0603 (1608 metric) : 0.063" × 0.031" (1.6 mm × 0.8 mm) Typical power rating for resistors 1/16 watt
  • 0805 (2012 metric) : 0.08" × 0.05" (2.0 mm × 1.25 mm) Typical power rating for resistors 1/10 watt
  • 1206 (3216 metric) : 0.126" × 0.063" (3.2 mm × 1.6 mm) Typical power rating for resistors 1/8 watt

Read more in the blog post

Capacitors

These are common properties given with capacitors:

• Value: pF, nF, uF, F, etc. Usually taken from a schematic, partlist, or datasheet.
• Voltage: We choose something at least double the operating voltage. If a 0.1uF cap is used on a 3.3volt power pin, we use a cap rated for at least 6.6volts.
• Tolerance: How close to actual value. Not really important unless an audio or analog application. We don't ever worry about this for digital stuff.
• ESR: How 'fast' is the cap. For most digital hobby stuff this is never important, maybe switch mode power supplies. If it is, the design probably says what to do.
• 100nF is the same as 0.1uF. This common value is generally used on every power pin of a digital chip. Commonly called a decoupling capacitor.
• 18pF, 0.1uF, 1uF (ceramic), and 10uF (tantalum) are most common in our projects, we buy them by the reel.
• Get a cheap capacitor kit from eBay so you have a few of every value available.

Ceramic

• Cheap
• Available from pF to 100uF ranges, but pF to 10uF is most common.
• Commonly rated for 25-50 volts.
• Unpolarized, no +/- side.

Capacitors

Picture	Type	Package	Mouser	Digikey
	Ceramic	0603	18pF 27pF 0.1uF 0.22uF 1.0uF 10uF/10V
	Ceramic	0805	27pF 33pF** 100pF** 220pF 470pF 560pF 0.1uF 0.22uF 1.0uF

• Rectangular passive components
  • 0603 (1608 metric) : 0.063" × 0.031" (1.6 mm × 0.8 mm)
  • 0805 (2012 metric) : 0.08" × 0.05" (2.0 mm × 1.25 mm)

Read more in the blog post

Tantalum

• Faster than aluminum, larger values than ceramic, and much more expensive. Tantalum is a conflict mineral we try to avoid.
• Watch out, these are commonly rated for only 6-16volts.
• We prefer the 1206 sized A case/Kemet A 10uF when we need these.
• Polarized: there is a +/- side, + is usually marked by a line etched or printed on the package.

Capacitors

Picture	Type	Package	Mouser	Digikey	Farnell
	Tantalum	A case/Kemet A/1206	3.3uF 4.7uF 10uF 22uF	3.3uF	3.3uF 10uF

• Tantalum capacitors
  • EIA 3216-18 (Kemet A, AVX A): 3.2 mm × 1.6 mm × 1.8 mm
  • EIA 3528-21 (Kemet B, AVX B): 3.5 mm × 2.8 mm × 2.1 mm
  • EIA 6032-28 (Kemet C, AVX C): 6.0 mm × 3.2 mm × 2.8 mm

Read more in the blog post

Aluminum

• Larger values than ceramic, but much bigger package. Like a through-hole capacitor in an SMD holder.
• Commonly rated for 10-35 volts.
• Polarized: there is a +/- side, - is usually marked by a line on through hole parts. On SMD packages the carrier usually has slanted edges (cut corners) on the + side, and possibly a black mark on the - side.

Capacitors

Picture	Type	Package	Mouser	Digikey	Farnell
	Aluminum	Panasonic B/4.0 dia	4.7uF (35V) 10uF (16V)		4.7uF (35V) 10uF (16V)
	Aluminum	Panasonic D/6.3 dia	47uF (35V)		47uF (35V)

• Aluminium capacitors
  • (Panasonic A, Chemi-Con B): 3.3 mm × 3.3 mm
  • (Panasonic B, Chemi-Con D): 4.3 mm × 4.3 mm (4.0 mm diameter)
  • (Panasonic C, Chemi-Con E): 5.3 mm × 5.3 mm (5.0 mm diameter)
  • (Panasonic D, Chemi-Con F): 6.6 mm × 6.6 mm (6.3 mm diameter)

Diodes

• SOD-323 is our standard small signal diode, we buy them by the reel
• Schottky SOD-123 are usually used for small switch mode power supplies

Diodes

Picture	Type	Package	Mouser	Digikey
	Silicon	SOD-323	1N4148 (150mA, 75V) BAS-16J (250mA, 100V)
	Schottky	SOD-123	BAT54W (200mA, 30V) BAT46W-V (150mA, 100V) BAT43W (200mA/4A surge, 30V) 1N5819 (1A+, 20V)
	Schottky	SMA	(1A/4A surge, 20V)
	Silicon	DO35	1N4148

• SOD: Small Outline Diode
  • SOD-523: 1.25 × 0.85 × 0.65 mm
  • SOD-323 (SC-90): 1.7 × 1.25 × 0.95 mm
  • SOD-123: 3.68 × 1.17 × 1.60 mm
• Yes, SMA is a picture of a capacitor, but they are almost the same

NPN transistors

• Beware, pinouts are different!
• Most common SOT-23 pinout: BEC. We always use it.

NPN transistors

Picture	Package	Mouser	Digikey
	SOT-23-BEC	BC81840MTF (800mA 25V 250hFE) BC81816MTF (800mA 25V 110hFE)
	TO92	800mA+ NPN transistor (BC337)

• SOT: small-outline transistor, with three terminals
  • SOT-23 (SC-59, TO-236-3): 2.9 mm × 1.3/1.75 mm × 1.3 mm body - three terminals for a transistor
  • SOT-223: 6.7 mm × 3.7 mm × 1.8 mm body - four terminals, one of which is a large heat-transfer pad

Read more in the blog post

PNP transistors

PNP transistors

Picture	Package	Mouser	Digikey
	SOT-23	PBSS5220T,215 (2A 40V) MMBT4403LT3G (600mA 40V) BC80840 (800mA 25V)

• SOT: small-outline transistor, with three terminals
  • SOT-23 (SC-59, TO-236-3): 2.9 mm × 1.3/1.75 mm × 1.3 mm body - three terminals for a transistor
  • SOT-223: 6.7 mm × 3.7 mm × 1.8 mm body - four terminals, one of which is a large heat-transfer pad

LEDs

LEDs

Picture	Package	Mouser	Digikey
	0805	Red Yellow
	T-1 3/4 (5mm)	IR 25deg IR 50deg
	HD-H103	7seg com. cathode w/dp

Read more in the blog post

Clock source

• HC-49/US is always preferred. It is the cheapest ($0.40) and most standard
• Smaller surface mount crystals start at $1+ each, and don't have standard packages

Crystals

Picture	Package	Mouser	Digikey	Farnell
	HC-49/US SMD crystal	8 MHz 12 MHz 20 MHz 25 MHz
	4x6mm SMD crystal	12MHz 12Mhz 12Mhz
	4x8mm SMD crystal	25MHz
	SMD crystal other (MM20SS)	32.768KHz
	HC-49 PTH crystal	20MHz
	PTH crystal other (TC26H)	32.768KHz 2.1mm
	7x5mm SMD oscillator	20Mhz (3.3volt) 50Mhz (3.3volt)	50MHz (3V3)	20MHz (3V3), 20MHz (5V)

Read more in the blog post

Regulators

• SOT-23-5 at 3.3V and 5.0V are really common in our projects

Regulators

Picture	Package	Mouser	Digikey
	SOT-23-5 (usually 150mA)	1.2V 1.2V 1.8V 1.8V 1.8V 2.5V 3.3V 3.3V** 5.0V ADJ: 2.5V-16V	1.2V 2.5V 3.3V
	SOT-223 (usually 800mA)	3.3V 5.0V
	TO-252-3 (DPAK) (usually 1A+)	5.0V
	TO-263-3 (D2PAK/DDPAK) (usually 1.5A+)	3.3V ADJ: 1.2-37V
	TO-220	3.3V 5.0V

• SOT: small-outline transistor
  • SOT-23-5 (SOT-25): 2.9 mm × 1.3/1.75 mm × 1.3 mm body - five terminals
  • SOT-223: 6.7 mm × 3.7 mm × 1.8 mm body - four terminals, one of which is a large heat-transfer pad
  • DPAK (TO-252): discrete packaging. Developed by Motorola to house higher powered devices. Comes in three- or five-terminal versions
  • D2PAK/DDPAK (TO-263) - bigger than the DPAK; basically a surface mount equivalent of the TO-220 through-hole package.

Read more in the blog post

Ferrite Bead

• We usually just make sure the bead is rated for enough current because we only use them for power filters
• If a special impedance is required, the part datasheet or application example will specify
• We just recently moved to 0603

Ferrite Bead

Picture	Package	Mouser	Digikey	Farnell
	0603	330ohm 1.7A, 180ohms 2A, 30ohms 3A
	0805	330ohms 1.5A		330ohm 1.5A

Read more in the blog post

Resettable Polyfuses

• Fuses to protect your prototypes from smoking or blowing
• We used these trivial rated fuses in 1812 package

Re-settable Fuse

Picture	Package	Maximum voltage	Current	Mouser	Digikey
	1206	6V	0.5A	1206L050YR
	1812	6V	1.25A	1812L125/6PR
	1812	15V	1.25A	1812L125DR

Inductor

Inductor

Picture	Package	Mouser	Digikey
		680uH 0.12A

Buttons and switches

• DTSM-6 (6mm) is the typical surface mount size
• 5.2mm is a smaller SMD button that is more pick and place friendly. We see it used by Seeed, SparkFun, Adafruit, etc. This is our standard button too. Also called 4.8mm in some specs
• P.P.S. (1.4mm) is a basic slide switch used as power switch

Buttons and switches

Picture	Package	Mouser	Digikey	Farnell
	DTSM-6 (6mm)	BLACK BROWN RED		(Shaft:3.4mm) (Shaft:1.4mm) (Shaft:0.71mm)
	5.2mm SMD (or 4.8mm)	SILVER		SILVER
	P.P.S. (1.4mm)	BLACK	BLACK	BLACK
100px	Push button DPDT style	Push button DPDT style

Read more in the blog post

Connectors

• 0.1" (2.54mm) header is the standard width of bread boards
• 2.1mm power jacks are the most common size. Center is +, outside is -
• There is no standard for ethernet jacks with integrated magnetics, check your datasheet twice!

Connectors

Picture	Part	Mouser	Digikey
	01x40 0.1" (2.54mm) male straight pin header	TIN GOLD
	01x40 0.1" (2.54mm) male right angle pin header	GOLD
	Shunts to connect 0.1" pin header (pin jumpers)	RED BLACK
	Power connectors	2.1mm SMD 2.1mm PTH 2.1mm MALE plug	2.1mm SMD
	USB MINI-B SMD	Kobikon
	USB B Through-hole	USB B connector
	ATX connector 90degrees	ATX connector 90degrees
	Ethernet	J1006F21 [HR911105A]
	3.5MM headphone	Internal switch normally open

Sensors

Sensors

Picture	Type	Mouser	Digikey
	Infrared demodulator	TSOP38238 (38KHz, 2.2-5.5V)
	Infrared detector	QSE159
	1-Wire temperature sensor	DS1822 (TO-92)
	Digital thermal sensor	TC74A2-3.3VCTTR (SOT-23A-5)
	Serial I2C RTC	DS1307ZN (SOIC-8)

ICs

PIC microcontrollers

Memory and storage

Logic

Programmable logic

• Dual-in-line
  • SOIC - Small-outline integrated circuit. Dual-in-line, 8 or more pins, gull-wing lead form, pin pacing 1.27 mm
  • SOJ - the same as SOIC except J-leaded
  • TSOP - thin small-outline package, thinner than SOIC with smaller pin spacing of 0.5 mm
  • SSOP - Shrink Small-Outline Package, pin spacing of 0.635 mm or in some cases 0.8 mm
  • TSSOP - Thin Shrink Small-Outline package.
  • QSOP - Quarter-Size Small-Outline package, with pin spacing of 0.635 mm
  • VSOP - Very Small Outline Package, even smaller than QSOP; 0.4, 0.5 mm or 0.65 mm pin spacing

• Quad-in-line
  • QFP - Quad Flat Package, various sizes, with pins on all four sides
  • LQFP/VQFP - Low-profile Quad Flat Package, 1.4 mm high, varying sized and pins on all four sides
  • TQFP/PQFP - plastic quad flat-pack, a square with pins on all four sides, 44 or more pins
  • QFN - Quad Flat No-lead, smaller footprint than leaded equivalent

Package descriptions adapted from Wikipedia.