Skip to content
WhatSMDSign in

SMD code 105 in SOT-363

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.

1 part in SOT-363 is printed 105

Not sure which one you have?

Answer up to 4 quick questions and these 6 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • FC105SOT-3636 pins, Sanyo ElectricNot recorded6 pinsSanyo Electric
    What it is
    Not recorded
    Maker
    Sanyo Electric
    Package
    SOT-363
    Pins
    6
    Details
    Si-pnp-Digi: Dual, Sw, 50V, 100mA, 200mW, 200MHz, R1/R2=47k/47k
    Source
    Published code list

    Is it dead? The meter test is below: This part.

  • 5 more parts have no package on record. Nothing rules them out, so they stay.
    • 1PMT4105Zener diode, Microsemi Integrated Products DivisionZener diodeNot recordedMicrosemi Integrated Products Division
      What it is
      Zener diode
      Maker
      Microsemi Integrated Products Division
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 11V±5%, Izt=76.5mA, 1W
      Source
      Published code list

      Is it dead? The meter test is below: Zener diode.

    • IXD1415AA057R-GLDO regulator, IXYSLDO regulatorNot recordedIXYS
      What it is
      LDO regulator
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, Dual out, Vout1/Vout2=2.85/2.85V±1%, 200mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

    • VRH1052LVLDO regulator, AnaSemLDO regulatorNot recordedAnaSem
      What it is
      LDO regulator
      Maker
      AnaSem
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, 1.05V±20mV, 250mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

    • XC6415AA057R-GLDO regulator, TorexLDO regulatorNot recordedTorex
      What it is
      LDO regulator
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, Dual out, Vout1/Vout2=2.85/2.85V±1%, 200mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

    • XC6423AB051R-GLDO regulator, TorexLDO regulatorNot recordedTorex
      What it is
      LDO regulator
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, Dual out, Vout1/Vout2=1.20/3.00V±1%, 300mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

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.

This part

Diode range and ohms range, part lifted.

Working, it reads

Depends on what it is. The datasheet, or an identical part, says.

Dead, it reads

  • Between two pins, the same reading both ways, near 0 V with a continuous beep: shorted.
  • Open between every pair of pins: failed open, or a part that reads open when working.
On the board
this is a first look only: the meter reads every path between those pins, and a short can be a neighbour. Lift one leg before you condemn it.
Compare:
If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.

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

Zener diode

Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.

Working, it reads

About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.

Dead, it reads

  • The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
  • Open both ways, forward too: failed open.
  • Holds well off its rated voltage on the supply test: drifted.
  • A soft knee, or a voltage that creeps on the supply test: leaky.
On the board
this is a first look only: the meter reads every path between those pins, and a short can be a neighbour. Lift one leg before you condemn it.
Compare:
If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
Watch for:
A meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.

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

Voltage regulator

Voltage, board powered, black probe on ground. Then ohms with the power off.

Working, it reads

Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.

Dead, it reads

  • Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
  • Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
  • Power off, input to output near 0 Ω: shorted.
On the board:
An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
Compare:
The same regulator on another rail or another board shows the right voltages and the right resistances.
Watch for:
Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.

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 105

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

Codes that begin with 105

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 9 more parts.

Did you find your part?

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