SMD code K5 in SOD-882

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.

2 parts in SOD-882 are printed K5

Not sure which one you have?

Answer up to 4 quick questions and these 27 parts are ranked, with a meter test that settles it. It works on a dead part too.

BZT52B15LSOD-882Zener diode, Galaxy MicroelectronicsZener diodeGalaxy Microelectronics
What it is
Zener diode
Maker
Galaxy Microelectronics
Package
SOD-882
Pins
2
Details
15V, 100mW, Surface Mount Zener Diodes
Source
Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
Datasheetfor BZT52B15L, opens in a new tab
PZU4.3B2LSOD-882Zener diode, NXPZener diodeNXP
What it is
Zener diode
Maker
NXP
Package
SOD-882
Pins
2
Details
Zener diode: 4.15..4.34V, Zzt=90(Iz=5mA), 250mW
Source
Published code list
Is it dead? The meter test is below: Zener diode.
13 more parts have no package on record. Nothing rules them out, so they stay.
- MM5Z15VBZener diode, Formosa MicrosemiZener diodeFormosa Microsemi
  What it is
  Zener diode
  Maker
  Formosa Microsemi
  Package
  Not recorded
  Pins
  Not recorded
  Source
  Manufacturer datasheet
  Is it dead? The meter test is below: Zener diode.
  Datasheetfor MM5Z15VB, opens in a new tab
- MM5Z15VB-Q1Zener diode, Formosa MicrosemiZener diodeFormosa Microsemi
  What it is
  Zener diode
  Maker
  Formosa Microsemi
  Package
  Not recorded
  Pins
  Not recorded
  Source
  Manufacturer datasheet
  Is it dead? The meter test is below: Zener diode.
  Datasheetfor MM5Z15VB-Q1, opens in a new tab
- MMBZ5255BWSZener diode, Taitron ComponentsZener diodeTaitron Components
  What it is
  Zener diode
  Maker
  Taitron Components
  Package
  Not recorded
  Pins
  Not recorded
  Details
  SMD Zener Diodes (Three Terminals) - 200mW
  Source
  Manufacturer datasheet
  Is it dead? The meter test is below: Zener diode.
  Datasheetfor MMBZ5255BWS, opens in a new tab
- 74AVCH1T45GMNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual supply translating transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- 74AVCH1T45GNNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual supply translating transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- 74AVCH1T45GSNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual supply translating transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- 74AVCH2T45GFNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual-bit, dual-supply voltage level translator/transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- 74AVCH2T45GNNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual-bit, dual-supply voltage level translator/transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- 74AVCH2T45GSNXPNot recordedNXP
  What it is
  Not recorded
  Maker
  NXP
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS logic IC: Dual-bit, dual-supply voltage level translator/transceiver with 3-state output
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8821N-25GIVoltage supervisor, Anwell SemiconductorVoltage supervisorAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 2.5V±2%, -Reset ODO, H-free
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8821N-25GSVoltage supervisor, Anwell SemiconductorVoltage supervisorAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 2.5V±2%, -Reset ODO, H-free
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8821N-25PIVoltage supervisor, Anwell SemiconductorVoltage supervisorAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 2.5V±2%, -Reset ODO
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8821N-25PSVoltage supervisor, Anwell SemiconductorVoltage supervisorAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 2.5V±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.

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.

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 K5

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

KS25

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