SMD Resistor Code Calculator

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smd resistor 000

SMD Resistor 000: Zero Ohm

An SMD resistor marked 000 or 0000 is not burnt out nor unmarked: the digit rule gives zero ohms. It is a part used as a jumper, in the same body and footprint as ordinary resistors. The tool opens with 000 decoded and compares it with 100, which is 10 Ω and is often confused with it.

Zero times any multiplier

Applying the 3-digit rule to 000, the first two numbers give 00 and the exponent gives 10⁰ = 1, so 00 × 1 = 0 Ω. The 4-digit 0000 is the same calculation with three zeros. The shortest marking, a single 0, also appears on parts too small for three characters, and the tool reads it as zero ohms. In every case the result is a conductor with no intended resistance, packaged as a resistor.
The reason for it is practical. A manufacturer can join two traces on a single-sided board without drilled holes or wires, use the same resistor body as the rest of the machine and choose, by soldering or not, between two configurations of the same board. When repairing, a 000 part that is open or missing cuts a connection in the circuit, something that is costly to overlook. An ordinary multimeter reads near zero on it, and when in doubt the continuity test settles it.
The relatives of 000 that confuse people most are 100 and 101. 100 is 10 × 10⁰ = 10 Ω, 101 is 100 Ω and 000 is 0 Ω: three parts that look very alike but behave very differently in a circuit. A part with nothing printed is not necessarily zero ohm; many small 1% resistors come unmarked. The tool decodes what is printed and does not guess what is not.

Zero ohm and its neighbors

000: this page

Input: 000
Expected output: 0

00 × 10⁰ = 0 Ω.

0000: in 4 digits

Input: 0000
Expected output: 0

000 × 10⁰ = 0 Ω.

0: the short marking

Input: 0
Expected output: 0

A single 0 is read as zero ohms.

100: not zero

Input: 100
Expected output: 10

10 × 10⁰ = 10 Ω.

101: one hundred ohms

Input: 101
Expected output: 100

10 × 10¹ = 100 Ω.

1000: a 4-digit code that is not zero

Input: 1000
Expected output: 100

100 × 10⁰ = 100 Ω.

Full tool FAQ

What does 103 mean on an SMD resistor?

It means 10 kΩ. The first two digits (10) are the value and the third (3) is the power of ten: 10 × 10³ = 10,000 Ω. It is not 103 ohms.

How do I read an SMD resistor with an R in the code, like 4R7?

What is the EIA-96 code and how do I read 01C?

What is the difference between the 3-digit and 4-digit codes?

What does 000 or 0 mean on an SMD resistor?

Can I convert a value in ohms to the SMD code?

Why can a code like 47R be read two ways?

What are the EIA-96 multiplier letters?

Can the last digit be 8 or 9?

Does the code tell me the resistor's tolerance?

Frequently asked questions

What does 000 mean on an SMD resistor?

Zero ohms. The first two digits (00) times the multiplier (10⁰) give 0 Ω. It is a jumper in a resistor package, not a burnt part.

Does a zero-ohm resistor really need to be a resistor?

It uses a resistor's body and footprint so the assembly machine handles it like any other component on the board. The gain is in the manufacturing process, not in the electronics.

How do I tell 000 from 100?

100 is 10 Ω and 000 is 0 Ω. Look closely at the first digit, or measure: 000 shows continuity near zero, 100 shows about 10 Ω.

Can I replace a 000 with a wire?

Generally yes, for testing, but the board was designed for the part. In designs that use the jumper as a configuration, replacing it with a resistor of a different value changes the circuit.

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smd resistor 000

SMD Resistor 000: Zero Ohm

Zero times any multiplier

Applying the 3-digit rule to 000, the first two numbers give 00 and the exponent gives 10⁰ = 1, so 00 × 1 = 0 Ω. The 4-digit 0000 is the same calculation with three zeros. The shortest marking, a single 0, also appears on parts too small for three characters, and the tool reads it as zero ohms. In every case the result is a conductor with no intended resistance, packaged as a resistor.

The reason for it is practical. A manufacturer can join two traces on a single-sided board without drilled holes or wires, use the same resistor body as the rest of the machine and choose, by soldering or not, between two configurations of the same board. When repairing, a 000 part that is open or missing cuts a connection in the circuit, something that is costly to overlook. An ordinary multimeter reads near zero on it, and when in doubt the continuity test settles it.

The relatives of 000 that confuse people most are 100 and 101. 100 is 10 × 10⁰ = 10 Ω, 101 is 100 Ω and 000 is 0 Ω: three parts that look very alike but behave very differently in a circuit. A part with nothing printed is not necessarily zero ohm; many small 1% resistors come unmarked. The tool decodes what is printed and does not guess what is not.

Zero ohm and its neighbors

000: this page

Input: 000
Expected output: 0

00 × 10⁰ = 0 Ω.

0000: in 4 digits

Input: 0000
Expected output: 0

000 × 10⁰ = 0 Ω.

0: the short marking

Input: 0
Expected output: 0

A single 0 is read as zero ohms.

100: not zero

Input: 100
Expected output: 10

10 × 10⁰ = 10 Ω.

101: one hundred ohms

Input: 101
Expected output: 100

10 × 10¹ = 100 Ω.

1000: a 4-digit code that is not zero

Input: 1000
Expected output: 100

100 × 10⁰ = 100 Ω.

Full tool FAQ

What does 103 mean on an SMD resistor?

It means 10 kΩ. The first two digits (10) are the value and the third (3) is the power of ten: 10 × 10³ = 10,000 Ω. It is not 103 ohms.

How do I read an SMD resistor with an R in the code, like 4R7?

What is the EIA-96 code and how do I read 01C?

What is the difference between the 3-digit and 4-digit codes?

What does 000 or 0 mean on an SMD resistor?

Can I convert a value in ohms to the SMD code?

Why can a code like 47R be read two ways?

What are the EIA-96 multiplier letters?

Can the last digit be 8 or 9?

Does the code tell me the resistor's tolerance?

Frequently asked questions

What does 000 mean on an SMD resistor?

Zero ohms. The first two digits (00) times the multiplier (10⁰) give 0 Ω. It is a jumper in a resistor package, not a burnt part.

Does a zero-ohm resistor really need to be a resistor?

It uses a resistor's body and footprint so the assembly machine handles it like any other component on the board. The gain is in the manufacturing process, not in the electronics.

How do I tell 000 from 100?

100 is 10 Ω and 000 is 0 Ω. Look closely at the first digit, or measure: 000 shows continuity near zero, 100 shows about 10 Ω.

Can I replace a 000 with a wire?

Generally yes, for testing, but the board was designed for the part. In designs that use the jumper as a configuration, replacing it with a resistor of a different value changes the circuit.