There are different types of resistor available in the market and you need to select one for your application based on your need.
Following sections describes in brief about various types of resistors available in market that one can use.Kindly note that the values corresponding to the resistor types will only provide estimate but not exact values.
|NIST||0.001%||Ultra-High Precision||Standard measuring Instruments|
|Foil Resistors||>0.01%||Extremely low TCR; Ultraprecision||Precision DC measurements|
|Thin Film||>0.01%||Usually Costly; High Precision; Low variance with Temperature||hybrid assemblies, microwave and RF circuits, amplifiers, oscillators, attenuators, couplers, and filters.|
|Carbon composition Resistor||5%||Very poor tolerance; Unreliable; Old technology|
|Carbon Film Resistor||5%||Simple technology; Cheaper; Low Precision|
|Thick Film||>1%||High variance with Temperature; Cheaper||Printers, automotive, computers, cell phone, attery chargres|
|Metal Film||5%||Good Precision; Relatively low variance with temperature|
|Fusable Metal Film resistor||>2%|
|Wirewound Precision||1%||High Power; Good Tolerance; Inductive affect|
|Grid Resistors||5%||Used in High current applications|
|Power Film Resistor||2% to 0.1%.|
|Thermistors||>1%||Resistance varies with temperature|
Resistors can also be categorised based on the type of mounting:
Surface Mount (SMD)
Fastly becoming popular are the surface mount devices and are almost replacing the through hole types rappidly in all the applications.
Following table lists various diamentions of SMD resistors available in the market. However, while selecting the resistor you need to take care about the power rating of the resistor and also the tolerance required.
|Size||Length (mm)||Width (mm)||Height (mm)|
Above are different kinds of resitors available in the market.
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Resistors can also be selected based on the power rating.
|Wattage||Typical Base Element|
|1/80W (12.5mW)||thin film resistors|
|1/20W (50mW)||thin & thick film resistors|
|1/10W (100mW)||thin & thick film resistors|
|1/8W (125mW)||thin & thick film resistors|
|1/4W (250mW)||thin & thick film, carbon composition, Metal Film resistors|
|1/2W (500mW)||thick film, metal film|
|1W||thick film, metal film, wirewound, bare metal, ceramic|
|5W||thick film, metal film, wirewound, bare metal, ceramic, wirewound ceramic, metal oxide, metal foil, metal strip, Manganin|
|10W||thick film, metal film, wirewound, cement, metal oxide, ceramic|
|20W||thick film, metal film, wirewound, ceramic|
|25W||thick film, metal film, wirewound, ceramic|
|50W||thick film, metal film, wirewound, ceramic|
|100W||thick film, metal film, wirewound, ceramic|
|1kW||thick film, metal film, wirewound|
More varities of resistors are available in the market, but the above data provides most frequently used ones.
Note: above data is for reference only and website is not liable for any information provided.