What do the letters on a circuit board mean? A reference designator unambiguously identifies a component within an electrical schematic or on a printed circuit board. The number is sometimes followed by a letter, indicating that components are grouped or matched with each other, e.g. R17A, R17B.
What do the numbers on a circuit board mean?
The second number is the function number of the circuit, such as “1” for the motherboard circuit, “2” for the power circuit and so on, which is determined by the circuit designer himself; The third and fourth digits represent the serial Numbers of similar devices on the circuit board. R117: resistance on the main board, serial number 17.
What is the meaning of the letters in the circuit diagram?
Generally, the first letter identifies the device category, such as R for resistor, C for capacitor, D for diode and Q for three-stage tube.
What are the markings on a circuit board called?
The technical term for the markings is "reference designators" (aka "refdes") and there are a few standards can define them. For schematic components, most EDA tools start off with one or few alphabets and then a sequential number. For example, R1 for the first resistor, C1 for the first capacitor, IC1 for the first IC and so on.
What symbols are not shown in a circuit diagram?
One important symbol that isn't shown is the symbol for an IC (integrated circuit). ICs are small assemblies that usually have multiple leads, called pins, which connect to various parts of the circuit contained within the assembly. Some ICs have as few as six or eight pins; others have dozens or even hundreds.
How do you read a circuit board label?
Label all the components on the drawing by the first letter of their type and a number. For example, the first capacitor you see should be labeled C1, the second C2, and so on. List in a column the labels of all the parts and their values found on the board.
What does V mean on a circuit board?
valveU: integrated circuit. V: valve (tube)
What does J mean on PCB?
ConnectorsJ: Connectors. T: Transformers. TP: Test points. P: Pads or pin headers.
What do the circuit symbols mean?
Circuit symbols are used in circuit diagrams which show how a circuit is connected together. The actual layout of the components is usually quite different from the circuit diagram. To build a circuit you need a different diagram showing the layout of the parts on stripboard or printed circuit board.
What is F on a circuit board?
Diode. F. Fuse. IC. Integrated circuit - an alternative widely used non-standard abbreviation.
What does G mean in electrical terms?
ConductanceG – Conductance, the inverse of electrical resistance (R) GFCI – Ground Fault Circuit Interrupter, a type of circuit breaker. H – Gross Head, determining the maximum power that can be produced. h – Net Head, also known as effective head. Hz – Hertz, the SI unit of frequency, defined as one cycle per second.
What does C on a circuit board mean?
IEEE 315 contains a list of Class Designation Letters to use for electrical and electronic assemblies. For example, the letter R is a reference prefix for the resistors of an assembly, C for capacitors, K for relays.
What does E stand for in circuits?
What is Ohm's Law?QuantityOhm's Law symbolIn case you're wondering:VoltageEE = electromotive force (old-school term)CurrentII = intensityResistanceRΩ = Greek letter omega
What is K in a circuit?
K for relays and contactors. V for tubes and semiconductors. (Consider “V” for “vacuum tube”.) Q for “switching devices for power circuits”, i.e. circuit breakers.
What is U and V in electrical?
I = current (ampere, A) U = electrical potential (volts, V) R = resistance (ohms, Ω)
How do you identify the components on a circuit board?
How to Identify Circuit Board Components Start by identifying the printed circuit board, or PCB. ... Identify other "nuts and bolts" electronic circuit components. ... Locate the circuit board's battery, fuses, diodes and transistors. ... Locate the processor, or processors.More items...•
What does R102 mean on a schematic?
On a schematic you will also see a electrical components symbol next to it will have a identification number next to its abbreviation (ie. You will see the symbol for a resistor. The abbreviation for a resistor "R" followed by a number to identify it on a PCB "R102". Next to the symbol you will also see its value "2.2K".
Do you see symbols on a PCB?
On a PCB is a completely different story. Sometimes you will not have any abbreviations, and Most of the time you will not see any symbols. Most of the time you will see a components next to a letter with a number next to it (ie.
Circuit Symbols of Electronic Components
There are so many electronic components that it is not possible to mention symbols of all the components in this one single tutorial. Hence, I have enlisted symbols of only the basic and mostly components.
Conclusion
I hope this tutorial on Electronic Components Name Abbreviations and Symbols was useful and helpful for you. Do share with others so that everyone can gain knowledge.
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