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Link to original EEVBlog forum post Edit

http://www.eevblog.com/forum/beginners/definitive-capacitor-identification-chart-(w-pictures)/

Capacitor Type Identification Edit

This is not a complete nor accurate list. We are currently just compiling data and images. Each image submitted may have multiple type nominations from multiple users separated by commas. So please DO NOT remove suggestions from other users please unless you are an expert and are 100% sure. Better images with higher resolutions will gradually replace or complement existing ones.

Description Physical Construction Material Polarised SMD / SMT Pros / Cons Image/s
Ceramic disc cap Disc Ceramic N N Not good in oscillator circuits. Never seem to fail. Often used for bypass capacitors. Changes a huge amount with temperature, even just holding it. Suffers from piezoelectric effect issues.
IMG 20170119 085513
Film cap (made in East Germany) Film N N
IMG 20170119 085440
Film cap (made in East Germany)

All marked "MKT"

Film N N
IMG 20170119 085419
Film cap Film N N
IMG 20170119 085353
N
IMG 20170119 085325
Film cap Film N N
IMG 20170119 085244
IMG 20170119 085232
Film cap Film Polystyrene N N Good for oscillators, bad with temperature changes. Should be kept cool.
IMG 20170119 085138
Film cap Film N N
IMG 20170119 085020
Orange Drop Capacitors?,

Film cap

Film N N
IMG 20170119 084958
Film cap Film N N
IMG 20170119 084946
Film cap Film Polypropylene N N Good in audio amplifiers and RF coupling. Not good in RF oscillator. Varies only a very tiny amount with temp.
IMG 20170119 084934
IMG 20170119 084926
IMG 20170119 084911
IMG 20170119 084903
Ceramic disc Disc Ceramic N N
IMG 20170119 084821
Film cap Film N
9b6f578f5505e4909fd756cb87da5fab 35
Film cap end view Film N N
9b6f578f5505e4909fd756cb87da5fab 02
9b6f578f5505e4909fd756cb87da5fab 05
Dipped MLCC N
9b6f578f5505e4909fd756cb87da5fab 08
Tantalum Tantalum N
9b6f578f5505e4909fd756cb87da5fab 11
Dipped HV cap, sometimes Y rated Disc Ceramic N N
9b6f578f5505e4909fd756cb87da5fab 12
Ceramic disc

THIS NEEDS TO BE MERGED

Disc Ceramic N N
9b6f578f5505e4909fd756cb87da5fab 14
foil capacitor made bei WIMA (probably FKS series) Foil N N
9b6f578f5505e4909fd756cb87da5fab 16
foil capacitor, but without the additional protective case (only thin film of lacquer) Foil N N
9b6f578f5505e4909fd756cb87da5fab 18
Ceramic cap dipped probably MLCC Ceramic N N
9b6f578f5505e4909fd756cb87da5fab 20
Film cap Film N N
9b6f578f5505e4909fd756cb87da5fab 28
Film cap polarised, there are also similar looking electrolytic capacitors, so it is hard to tell. (>10uF it is probably electrolytic, <1uF is foil capacitor). This one has 3.9nF, so it is a foil capacitor. Film Y N
9b6f578f5505e4909fd756cb87da5fab 30
feed through capacitor Ceramic Ceramic N
9b6f578f5505e4909fd756cb87da5fab 37
MLCC SMD,

Sure these are not NPO?

MLCC Ceramic N Y Good in oscillator circuits. Very little change with temp
9b6f578f5505e4909fd756cb87da5fab 40
9b6f578f5505e4909fd756cb87da5fab 41
9b6f578f5505e4909fd756cb87da5fab 43
Aluminum Electrolytic, polarised Aluminium Y N Large Farad capacity
9b6f578f5505e4909fd756cb87da5fab 48
Dipped Tantalum bead Bead Tantalum Y N Very stable at different temperatures.
9b6f578f5505e4909fd756cb87da5fab 51
Aluminum Electrolytic, polarised Aluminum Y N
9b6f578f5505e4909fd756cb87da5fab 54
Supercap Y N Very large Farad capacity
9b6f578f5505e4909fd756cb87da5fab 56
Tantalum bead Bead Tantalum Y N
9b6f578f5505e4909fd756cb87da5fab 58
Aluminum Electrolytic, Non-polarised Aluminum N N Large Farad capacity
9b6f578f5505e4909fd756cb87da5fab 62
Tantalum SMD Tantalum Y Y
9b6f578f5505e4909fd756cb87da5fab 69
Aluminum Electrolytic SMD, polarised Aluminum Y Y
9b6f578f5505e4909fd756cb87da5fab 72
Aluminum Electrolytic SMD, polarised Aluminum Y Y
9b6f578f5505e4909fd756cb87da5fab 74
?, could be a supercap or a battery or something in between Y
9b6f578f5505e4909fd756cb87da5fab 77
axial electrolytic capacitor Aluminum Y N
Cap electr1
axial electrolytic capacitor Aluminum Y N
Cap electr2
axial electrolytic capacitor (KEMET T110) Aluminum Y N
Cap t110
Foil capacitor (Wima MKB-3) Foil N N
Cap mkb
Foil capacitor

All marked "MKP"

Foil polypropylene N N
Cap mkp

Ceramic disc capacitor

Y type for EMI protection

Disc Ceramic N N
Cap disc y1

Ceramic disc capacitor

Y type for EMI protection

Disc Ceramic N N
Cap disc y2

MOV (metal oxide varistor)

THIS IS NOT A CAPACITOR!

It looks very similar to ceramic disc capacitors, but is used for surge protection.

Disc N N
Varistor

Resettable fuse (polyfuse)

THIS IS NOT A CAPACITOR!

It looks very similar to ceramic disc capacitors, but is used for current protection.

Disc N N
Resfuse

NTC (for inrush current limiting)

THIS IS NOT A CAPACITOR!

It looks very similar to ceramic disc capacitors, but is used for inrush current limiting in power supplies.

Disc N N
Ntc
Ceramic disc capacitors - Various dielectrics Disc Ceramic N N Require matching ceramic type with application. Never seem to fail. Often used for bypass capacitors. Some types have large tempco. Range of available tempco is small positive through 0 to large negative. Suffers from piezoelectric effect issues.
Ceramic Capacitors
Mica capacitors Stacked Plate Mica N N Obsolete type, but very stable. Limited capacitance available.
Mica capacitors
Aluminum can wet electrolytic capacitor with reduced pin count octal base Rolled foil in can Wet Electrolytic Y N Limited life due to electrolyte loss. Obsolete package.
Aluminum capacitor
Mystery capacitor Tubular? Ceramic? N N
Unknown Capacitor

Related Videos Edit

Which Capacitor Do I Use? Tech Tips Tuesday

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