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:resistors

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Resistors

1/4W 5% Carbon

The most common resistors are 1/4W 5% carbon film. Unless otherwise specified, this is what is considered the 'default' resistor. 5% resistors are available in the following values:

 1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1, 
 10, 11, 12, 13, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 39, 43, 47, 51, 56, 62, 68, 75, 82, 91, 
 100, 110, 120, 130, 150, 160, 180, 200, 220, 240, 270, 300, 330, 360, 390, 430, 470, 510, 560, 620, 680, 750, 820, 910, 
 1.0K, 1.1K, 1.2K, 1.3K, 1.5K, 1.6K, 1.8K, 2.0K, 2.2K, 2.4K, 2.7K, 3.0K, 3.3K, 3.6K, 3.9K, 4.3K, 4.7K, 5.1K, 5.6K, 6.2K, 6.8K, 7.5K, 8.2K, 9.1K, 
 10K, 11K, 12K, 13K, 15K, 16K, 18K, 20K, 22K, 24K, 27K, 30K, 33K, 36K, 39K, 43K, 47K, 51K, 56K, 62K, 68K, 75K, 82K, 91K
 100K, 110K, 120K, 130K, 150K, 160K, 180K, 200K, 220K, 240K, 270K, 300K, 330K, 360K, 390K, 430K, 470K, 510K, 560K, 620K, 680K, 750K, 820K, 910K 
 1.0M, 1.2M, 1.5M, 1.8M, 2.2M, 2.4M, 2.7M, 3.3M, 3.9M, 4.7M, 5.6M, 6.8M, 8.2M 

Mouser's brand is Xicon, and the part numbers are encoded as 291-1.2K-RC where the bold part at the end is the resistance value.

Digikey's brand is Yageo, and the part numbers are encoded as 1.2KQBK-ND where the bold part at the beginning is the resistance value

1/4W 1% Metal

Higher precision, for filters, DACs and other places where the value has to be exact

Mouser's Xicon brand 1% metal film resistors are encoded as 271-10K-RC where the bold part in the middle is the resistance value (10K in this case)

Digikey's Yageo brand 1% metal film resistors are encoded as 10.0KXBK-ND where the bold part in the beginning is the resistance value (10.0K in this case)

Thermistors

Radial 10K NTC thermistor
Often used in battery temp sensing
NTCLE100E3103JB0 Digikey Mouser
10K NTC lug thermistor
easy attachment!
NTCALUG03A103H Digikey Mouser
10K 1% NTC epoxy thermistor
waterproof
10K NTC Digikey Adafruit

PTC fuses

These are basically thermistors that have a very steep curve at the given current draw

ptc_t.jpg 200mA fuse RXEF020 Digikey Mouser

Resistor Networks

Multiple resistors in one package.

10pinresnet_t.jpg 10 pin resistor network (9 bussed) - 100K Bournes 4600x Digkey Mouser