SMD code R83

Marking codes are not standardised, and the same code is reused by unrelated makers for unrelated parts. Below is every part in our tables printed with it, and any printed with a code that is easy to misread as it, from the manufacturers' own marking tables and published code lists.

R83 on a chip resistor

0.83 Ω

0.83 Ω resistor

The R stands in for the decimal point, which is how sub-ohm and fractional values are printed. The same marking also reads as 0.83 µH on an inductor or 0.83 pF on a capacitor, and nothing in the code says which; the body of the part does.

Check it with a meter

Lift one end and measure across it. A good one reads 0.83 Ω. Measuring it in circuit reads the parallel combination of everything around it, which is almost always lower, never higher: well above 0.83 Ω on the board is a fault. Open, or well above 0.83 Ω, means it has failed: burnt, cracked or corroded. That does not change what to fit: the marking still says 0.83 Ω. A burnt resistor usually means the part it feeds drew too much, so find that before fitting a new one.

On a transistor or diode body (USP-6B, SOT-23, SOT-89), R83 is a part code instead. Those parts are listed below.

10 parts are printed R83

Not sure which one you have?

Answer up to 4 quick questions and these 10 parts are ranked, with a meter test that settles it. It works on a dead part too.

HE61CN5802MRSOT-23Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-233 pinsHeermicr Semicconductor
What it is
Voltage supervisor
Maker
Heermicr Semicconductor
Package
SOT-23
Pins
3
Details
Voltage detector IC: 5.8V±2%, +Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7058MNM5RSOT-23-5Voltage supervisor, 5 pins, Heermicr SemicconductorVoltage supervisorSOT-23-55 pinsHeermicr Semicconductor
What it is
Voltage supervisor
Maker
Heermicr Semicconductor
Package
SOT-23-5
Pins
5
Details
Voltage detector IC: 5.8V±2%, +Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7058MNNRSOT-23Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-233 pinsHeermicr Semicconductor
What it is
Voltage supervisor
Maker
Heermicr Semicconductor
Package
SOT-23
Pins
3
Details
Voltage detector IC: 5.8V±2%, +Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7058MNPRSOT-89Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-893 pinsHeermicr Semicconductor
What it is
Voltage supervisor
Maker
Heermicr Semicconductor
Package
SOT-89
Pins
3
Details
Voltage detector IC: 5.8V±2%, +Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
TC53N5802ECTSOT-23-5Voltage supervisor, 5 pins, MicrochipVoltage supervisorSOT-23-55 pinsMicrochip
What it is
Voltage supervisor
Maker
Microchip
Package
SOT-23-5
Pins
5
Details
Voltage detector IC: 5.8V±2%, -Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CN5802MSOT-233 pins, TorexNot recordedSOT-233 pinsTorex
What it is
Not recorded
Maker
Torex
Package
SOT-23
Pins
3
Details
CMOS-IC: Voltage Detector 5,8V, Reset Open drain output
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CN5802PSOT-893 pins, TorexNot recordedSOT-893 pinsTorex
What it is
Not recorded
Maker
Torex
Package
SOT-89
Pins
3
Details
CMOS-IC: Voltage Detector 5,8V, Reset Open drain output
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CN5845MRSOT-23Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-233 pinsTorex
What it is
Voltage supervisor
Maker
Torex
Package
SOT-23
Pins
3
Details
Voltage detector IC: 5.8V±2%, -Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CN5845PRSOT-89Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-893 pinsTorex
What it is
Voltage supervisor
Maker
Torex
Package
SOT-89
Pins
3
Details
Voltage detector IC: 5.8V±2%, -Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
1 more part has no package on record
- XC61GN5802HRVoltage supervisor, TorexVoltage supervisorNot recordedNot recordedTorex
  What it is
  Voltage supervisor
  Maker
  Torex
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 5.8V±2%, +Reset ODO
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.

Is it dead? One meter test per kind

Parts of the same kind are tested the same way, so each test is here once. Each part above points to its own.

Integrated circuit

Voltage with the board powered; ohms from each pin to ground with it off.

Working, it reads

Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.

Dead, it reads

A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
Supply present, output stuck: failed, or its load has.

On the board:: A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
Compare:: The surest reference is the same IC on a working board, measured pin by pin.
Watch for:: Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.

A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.

Printed with a code easy to misread as R83

One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.

RB31

Codes that begin with R83

For a marking with its end worn or burnt off. Each code has a page of its own.

Codes not listed here are printed on 4 more parts.

Did you find your part?

Open this in the search to correct a character or try another package.