Electronic components codes – Android app

Introduction

 Application for reading codes for resistance, capacitance and inductance of electronic components.

The Application checks the entered value against E-series E6, E12, E24, E48, E96, E192, depending on the accuracy.

Pro versions

Pro version of this application not contains ads and it is not collect any user data.

Application also contains help and detailed description for all codes of electronic components and lists of standard values for E series.

Features

This application supported following features:

• Resistor color codes
• SMD resistor codes
• EIA-96 resistor codes
• Ceramic capacitor codes
• Film capacitor codes
• Tantalum capacitor color codes
• SMD tantalum capacitor codes
• Inductor color codes
• SMD inductor color codes

Resistor color codes 

Resistor color codes page contains calculator for 3, 4, 5, 6 ranges resistors:

Resistor color coding can contain 3, 4, 5 and 6 stripes.

The first strip is usually placed closest to the edge of the resistor. For example, on 4-band resistors, the gold or silver tolerance band will always be the last.

3-band resistor

These resistors have two bands for the resistance value and one multiplier. Such resistors have a tolerance of 20% and a range of values corresponds to E6 series.

4-band resistor

Four-band color code is the most common option. These resistors have two resistance bands, one multiplier and one tolerance band. These resistors have a tolerance of 5% or 10%.

• Tolerance of 10% corresponds to E12 series;
• Tolerance 5% corresponds to E24 series;

5-band resistor

This is a group of high precision resistors. They have an additional stripe to indicate the third significant digit. Therefore, the first three bars represent significant digits, the fourth bar represents the multiplier, and the fifth bar represents the percentage tolerance.

This group has tolerances of 2%, 1%, 0.5% and less.

• Tolerance of 2% corresponds to E48 series;
• Tolerance of 1% corresponds to E96 series;
• Tolerance of 0.5% and less corresponds to E192 series;

6-band resistor

6-band resistors are usually designed for high-precision resistors with a specific temperature coefficient (TCR). The temperature coefficient of resistance characterises the dependence of electrical resistance on temperature. The initial temperature is considered to be + 25°C. Temperature coefficient is measured in ppm/K.

Single black stripe or zero resistance resistor

A resistor with one black stripe is called a zero resistance resistor. It is mainly used as a jumper with the function of connecting conductors on a PCB. The advantage of using a resistor pack is that you can use the same machines to place components on a PCB.

SMD resistor codes

SMD resistor codes page have tree types of standard and EIA-96 precision resistors

SMD resistors have a three- or four-digit code. Also, for precision SMD resistors there is a separate EIA-96 coding system.

3-digit code

Standard Tolerance SMD resistors are labeled with a simple three-digit code. The first two numbers show the meaning in ohms, and the third is a multiplier.

Resistances less than 100Ω may not have a multiplier, the letter is used instead R to indicate the position of the decimal point. These resistors use the series of preferred numbers E12 with 10% tolerance or E24 with 5% tolerance.

Examples of 3-digit code:

• 2R2 = 2.2Ω
• 681 = 68 × 10¹= 680Ω
• 104 = 10 × 10⁴= 100kΩ

4-digit code

The 4-digit code is used to mark precision SMD resistors. It is similar to the previous system, the only difference is in the number of significant digits: the first three numbers tell us the significant digits, and the fourth will be a factor indicating the power of ten by which three significant digits must be multiplied.

Resistances with value less than 100Ω also denoted by the letter R indicating the position of the decimal point.

These resistors use the series of preferred numbers: E48 (2%), E96 (1%), E192 (< 0.5%).

Examples of 4-digit code:

• 1330 = 133 × 10⁰= 133 Ω
• 7151 = 751 × 10¹= 7.15kΩ
• 6812 = 681 × 10²= 68.1kΩ

EIA-96 Encoding

The EIA-96 coding system is used for precision SMD resistors with a tolerance of 1%. The code consists of 3 symbols: the first 2 digits indicate the coded value of the resistor, and the third character is a letter that indicates the multiplier.

The denomination coding is presented in the table:

Code	Value	Code	Value	Code	Value	Code	Value
01	100	25	178	49	316	73	562
02	102	26	182	50	324	74	576
03	105	27	187	51	332	75	590
04	107	28	191	52	340	76	604
05	110	29	196	53	348	77	619
06	113	30	200	54	357	78	634
07	115	31	205	55	365	79	649
08	118	32	210	56	374	80	665
09	121	33	215	57	383	81	681
10	124	34	221	58	392	82	698
11	127	35	226	59	402	83	715
12	130	36	232	60	412	84	732
13	133	37	237	61	422	85	750
14	137	38	243	62	432	86	768
15	140	39	249	63	442	87	787
16	143	40	255	64	453	88	806
17	147	41	261	65	464	89	825
18	150	42	267	66	475	90	845
19	154	43	274	67	487	91	866
20	158	44	280	68	499	92	887
21	162	45	287	69	511	93	909
22	165	46	294	70	523	94	931
23	169	47	301	71	536	95	953
24	174	48	309	72	549	96	976

The resistor multiplier is encoded with letters:

Code	Multiplier
A	1
B	10
C	100
D	1000
E	10000
F	100000
H	10
R	0.01
S	0.1
X	0.1
Y	0.01
Z	0.001

Please note that some multipliers can be encoded with two different letters.

Examples of EIA-96 coded resistors

• 14X = 137 × 0.1 = 13.7Ω
• 94C = 931 × 100 = 93.1kΩ

Ceramic capacitor codes

On ceramic disk capacitors, the code can be contained 1-4 characters.

1-2 symbols

If the capacitor has only one or two symbols, this means that there is no multiplier and the capacitor simply indicates the capacitance in picofarads. For example, 15 – then its value is 15pF.

3 symbols

The first two symbols indicate the capacitance of the capacitor, and the third number is the multiplier.

When the first two numbers are multiplied by a factor, the resulting value is the capacitor value in picofarads. For example:

• 220 = 22 × 10⁰= 22pF
• 681 = 52 × 10¹= 680pF
  
• 472 = 47 × 10²= 4700pF = 47nF
• 104 = 10 × 10⁴= 100000pF = 100nF = 0.1 μF

Sometimes the letters p, n, µ are present on the capacitors. They can be used as decimal separator, for example:

• 22p = 22pF
• n47 = 0.47nF
• 4n7 = 4.7nF
• μ22 = 0.22μF

4 symbols

An additional fourth character is a letter denoting the permissible tolerance of the capacitor’s capacitance.

Capacitor tolerance coding is shown in the table:

A	±0,05pF
B	±0,1pF
C	±0,25pF
D	±0,5pF
F	±1,0%
G	±2,0%
H	±2,5%
J	±5,0%
K	±10%
L	±15%
M	±20
N	±30%
P	-0…+100%
Q	-10…+30%
S	-20…+50%
T	-0…+50%
U	-0…+75%
W	-10…+100%
Y	-20…+5%
Z	-20…+80%

The letter indicating the tolerance is indicated after the value of the nominal capacity: 22nK, 220nM, 470nJ. Tolerances A, B, C, D apply to capacitors of 15pF or less. Mostly in household appliances, capacitors with a tolerance of J, K, M, Z are widely used.

Examples:

• 22pK = 22pF ±10%
• n47J = 0.47nF ±5%
• μ22M = 0.22μF ±20%

On ceramic capacitors, the value of the operating voltage can be indicated after the capacity and tolerance. This is an optional parameter, set mainly on high-voltage capacitors. Typically, voltage is indicated in volts by the letter V. For example, 16V, 250V, 1kV.

Some manufacturers may use denominations that are not included in the standard — e.g. 5pF.

Film capacitor codes

On ceramic disk capacitors, the code can be contained 3 or 4 characters (without voltage code).

3 symbols

The first two characters indicate the capacitance, and the third number is the multiplier. The resulting value is the capacitor value in picofarads. Examples:

• 473 = 47 × 10³= 47000pF = 47nF
• 104 = 10 × 10⁴= 100000pF = 100nF = 0.1 μF

Sometimes, the letters p, n, µ are present on the capacitors. They can be used as decimal separator, for example:

• 22p = 22pF
• n47 = 0.47nF
• 4n7 = 4.7nF
• μ22 = 0.22μF

4 symbols

An additional fourth character is a letter denoting the permissible deviation of the capacitor’s capacitance.

Capacitor tolerance coding is shown in the following table:

Code	Tolerance
F	±1,0%
G	±2,0%
H	±2,5%
J	±5,0%
K	±10%
L	±15%
M	±20%
Z	-20…+80%

The letter denoting the tolerance is indicated after the value of the nominal capacity: 22nK, 220nM, 470nJ. Basically, in household equipment, capacitors with a tolerance of H, M, J, K are widely used. Tolerances with A, B, C, D symbols are used for capacitors with a capacity of 15pF and less only. Examples:

• 22pK = 22pF ±10%
• n47J = 0.47nF ±5%
• μ22M = 0.22μF ±20%

Voltage code

On the capacitor, the value of the permissible operating voltage is indicated after the nominal capacity and the tolerance. There are two options:

1. The voltage is indicated in volts with the letter V. For example, 16V, 250V, 1kV.
2. Use EIA coding

The EIA coding for capacitor’s voltage is shown in the table:

Code	Voltage
0G	4.0V
0L	5.5V
0J	6.3V
1A	10V
1C	16V
1E	25V
1H	50V
1J	63V
0k	80V
2A	100V
2Q	110V
2B	125V
2C	160V
2Z	180V
2D	200V
2P	220V
2E	250V
2F	315V
2V	350V
2G	400V
2W	240V

Film capacitors colour codes

This color code for film capacitors (Tropical fish) has limited use for film capacitors. These capacitors are not available now, but they can be found in old electronic equipment.

Standard ratings, depending on accuracy, correspond to series E6, E12 and E24.

These capacitors have 5 bands, the first band is counted from the top of capacitor:

• 1.2 line – capacity value
• 3 line – multiplier
• 4 line – precision
• 5 line – voltage

Note that some combinations of stripes can cause 2 adjacent stripes to be the same color, so it looks like there are 4 stripes on the capacitor, but this stripe will be wider than the rest. Consider this when determining capacity.

SMD Tantalum electrolytic capacitors codes

The simplest tantalum capacitor coding system directly shows the capacitance value, for example 22 µF.

Another marking option is a three-digit code: The first two digits show the capacity in picofarads, the third is the multiplier. For example:

• 225 = 22 × 10⁵ = 2200000pF = 2.2μF
• 476 = 47 × 10⁶ = 47000000pF = 47μF

The operating voltage of the capacitor can be indicated in volts, for example, 25V. Letter encoding can also be used.

Voltage coding options are presented in the table:

Code	Voltage
e	2.5V
G	4V
J	6.3V
A	10V
C	16V
D	20V
E	25V
V	35V
H	50V

Inductor color codes

Inductors color coded usually contains with 3 or 4 stripes.

3 stripes

The definition of inductance is similar to the color coding of resistors. The first two bands define the inductance value in µH. The third bar is a multiplier.

The tolerance of such inductors is 20% and the range of values corresponds to E6 series.

4 stripes

Additional bandwidth on inductors adds tolerance. Typically, inductors with additional stripe have tolerances of 5% (gold stripe) or 10% (silver stripe).

• 10% tolerance corresponds to E12 series;
• 5% tolerance corresponds to E24 series;

SMD inductor color codes

SMD inductors coded usually contains with 3 or 4 symbols.

3 symbols

The first two characters indicate the inductance, and the third number is the multiplier. The resulting value is the capacitor value in microhenry. For example:

• 121 = 12 × 10¹= 120μH
• 103 = 10 × 10³= 10000μH = 10mH

These inductances have a tolerance of 20%.

4 symbols

Precision inductors have a fourth character to indicate tolerance

Tolerances for inductors are presented in the table.

Code	Tolerance %
F	±1,0%
G	±2,0%
J	±5,0%
K	±10%
M	±20%

For example:

• 100J = 10 × 10⁰ = 10μH, 5%
• 221K = 22 × 10¹ = 220μF, 10%

Helps

Every component calculators have reference page contains a detailed description to help you read component codes:

Settings

Settings page contains two options: language and theme.

App languages

The application language is independent of the system language. That is, if the system language is English, in the application you can set other language from list, for example, Spanish.

Currently, this application is translated into 6 languages, but new languages will be added in future versions.

App themes

Depending on the user’s preferences, the application can be displayed in light or dark theme. The application has 3 options:

• System default
• Light
• Dark

When you set the systems default option, the application will use the theme installed on the device. The other options set a theme independent of the system theme. Dark theme can also be installed on older versions of Android that do not have theme switching.