SMD code KXs

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.

The last letter, s, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and KX was searched.

111 parts are printed KXs

Not sure which one you have?

Answer up to 4 quick questions and these 50 parts are ranked, with a meter test that settles it. It works on a dead part too.

P6SMB15ASMBTVS diode, 2 pins, FagTVS diodeSMB2 pinsFag
What it is
TVS diode
Maker
Fag
Package
SMB
Pins
2
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
Datasheetfor P6SMB15A, opens in a new tab
P6SMBJ10ASMBTVS diode, 2 pins, PanjitTVS diodeSMB2 pinsPanjit
What it is
TVS diode
Maker
Panjit
Package
SMB
Pins
2
Details
SMD TVS - 600W
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
Datasheetfor P6SMBJ10A, opens in a new tab
PMBF170SOT-233 pins, Philips SemiconductorsNot recordedSOT-233 pinsPhilips Semiconductors
What it is
Not recorded
Maker
Philips Semiconductors
Package
SOT-23
Pins
3
Details
n-MOS-e: T-MOS, LogL, 60V, 300mA, 830mW, <25Ω(500mA)
Source
Published code list
Is it dead? The meter test is below: This part.
PMV37ENSOT-233 pins, NexperiaNot recordedSOT-233 pinsNexperia
What it is
Not recorded
Maker
Nexperia
Package
SOT-23
Pins
3
Source
Published code list
Is it dead? The meter test is below: This part.
PT7M6228CHC3ESOT-323Voltage supervisor, 3 pins, Pericom TechnologyVoltage supervisorSOT-3233 pinsPericom Technology
What it is
Voltage supervisor
Maker
Pericom Technology
Package
SOT-323
Pins
3
Details
Voltage detector IC: 2.8V±1.5%, +Reset PPO, L-free
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
PT7M6228CHC4SOT-23-5Voltage supervisor, 5 pins, Pericom TechnologyVoltage supervisorSOT-23-55 pinsPericom Technology
What it is
Voltage supervisor
Maker
Pericom Technology
Package
SOT-23-5
Pins
5
Details
Voltage detector IC: 2.8V±1.5%, +Reset PPO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
PT7M6228CHC4ESOT-23-5Voltage supervisor, 5 pins, Pericom TechnologyVoltage supervisorSOT-23-55 pinsPericom Technology
What it is
Voltage supervisor
Maker
Pericom Technology
Package
SOT-23-5
Pins
5
Details
Voltage detector IC: 2.8V±1.5%, +Reset PPO, Lead free
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
PT7M6228CHTA3ESOT-23Voltage supervisor, 3 pins, Pericom TechnologyVoltage supervisorSOT-233 pinsPericom Technology
What it is
Voltage supervisor
Maker
Pericom Technology
Package
SOT-23
Pins
3
Details
Voltage detector IC: 2.8V±1.5%, +Reset PPO, L-free
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
R3116K281CDFNVoltage supervisor, RicohVoltage supervisorDFNNot recordedRicoh
What it is
Voltage supervisor
Maker
Ricoh
Package
DFN
Pins
Not recorded
Details
Voltage detector IC: 2.8V±0.8%, -Reset PPO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
R3160N186ASOT-23-6Voltage supervisor, 6 pins, RicohVoltage supervisorSOT-23-66 pinsRicoh
What it is
Voltage supervisor
Maker
Ricoh
Package
SOT-23-6
Pins
6
Details
Voltage detector IC: 18.6V±1.75%, -Reset ODO
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
R5426N111DDSOT-23-66 pins, Nisshinbo Micro DevicesNot recordedSOT-23-66 pinsNisshinbo Micro Devices
What it is
Not recorded
Maker
Nisshinbo Micro Devices
Package
SOT-23-6
Pins
6
Details
CMOS-IC: Li-Ion Battery Over-charge/discharge Protection, Vc/d=1,11V
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
RT9819C-40PVSOT-23Voltage supervisor, 3 pins, RichtekVoltage supervisorSOT-233 pinsRichtek
What it is
Voltage supervisor
Maker
Richtek
Package
SOT-23
Pins
3
Details
Voltage Detector
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
SMBG10ASMBGTVS diode, 2 pins, VishayTVS diodeSMBG2 pinsVishay
What it is
TVS diode
Maker
Vishay
Package
SMBG
Pins
2
Details
600 W TVS diode, unidirectional
Source
An older or alternative marking, from a published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
Datasheetfor SMBG10A, opens in a new tab
2 more parts have no package on record
- P6SMAJ10ADFQTVS diode, Diodes IncorporatedTVS diodeNot recordedNot recordedDiodes Incorporated
  What it is
  TVS diode
  Maker
  Diodes Incorporated
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Transient voltage supressor: Vrwm=10V, Vbr=11.10..12.80V, Ipp=35.3A, 600W(1ms)
  Source
  Published code list
  Is it dead? The meter test is below: TVS or ESD protection diode.
- R5426D111DDNisshinbo Micro DevicesNot recordedNot recordedNot recordedNisshinbo Micro Devices
  What it is
  Not recorded
  Maker
  Nisshinbo Micro Devices
  Package
  Not recorded
  Pins
  Not recorded
  Details
  CMOS-IC: Li-Ion Battery Over-charge/discharge Protection, Vc/d=1,11V
  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.

TVS or ESD protection diode

Diode range, from the protected line to ground, part lifted if you can.

Working, it reads

A one-way part reads about 0.6 to 0.8 V forward and open in reverse. A two-way part reads open both ways. Arrays with several lines read as the datasheet's diagram draws them.

Dead, it reads

From the line to ground, the same reading both ways, near 0 V with a continuous beep: shorted.
A reading both ways on a one-way part: leaky.
A one-way part open both ways: failed open.

On the board: , a line reading shorted to ground can be this part or anything else on that line. Lift it: if the short goes with it, it has failed.
Compare:: The same part on the next line or connector pin is the healthy reading to compare with.
Watch for:: A two-way part reads open both ways when it is good, exactly like one that has failed open. The meter cannot tell them apart; an identical part on the next line can.

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

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.

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.

Did you find your part?

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