SMD code NEp

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, p, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and NE was searched.

132 parts are printed NEp

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.

R5323N015BSOT-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
VR-IC: LDO, Dual out, sep. CE, Vo1=1.5V, Vo2=3.3V, 150mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
RP106K111BDFNLDO regulator, RicohLDO regulatorDFNNot recordedRicoh
What it is
LDO regulator
Maker
Ricoh
Package
DFN
Pins
Not recorded
Details
Linear voltage regulator IC: LDO, 1.1V±0.8%, 400mA, +CE
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
RP130Q341DSOT-343LDO regulator, 4 pins, RicohLDO regulatorSOT-3434 pinsRicoh
What it is
LDO regulator
Maker
Ricoh
Package
SOT-343
Pins
4
Details
Linear Voltage Regulator
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
RT2N08MSOT-23-55 pins, MitNot recordedSOT-23-55 pinsMit
What it is
Not recorded
Maker
Mit
Package
SOT-23-5
Pins
5
Details
Si-npn-Digi: Dual, Sw, 50V, 100mA, 150mW, 200MHz, R1/R2=2.2k/10k
Source
Published code list
Is it dead? The meter test is below: This part.
RTGN432PSOT-893 pins, Isahaya ElectronicsNot recordedSOT-893 pinsIsahaya Electronics
What it is
Not recorded
Maker
Isahaya Electronics
Package
SOT-89
Pins
3
Details
Si-pnp-Dg+Z-D: Drv, 60V, 1A, 500mW, B>200, R1/R2=4.7k/10K
Source
Published code list
Is it dead? The meter test is below: This part.
S-8052ANB-NESOT-893 pins, ABLICNot recordedSOT-893 pinsABLIC
What it is
Not recorded
Maker
ABLIC
Package
SOT-89
Pins
3
Source
Published code list
Is it dead? The meter test is below: This part.
S-8356K30MC-NEPT2SOT-23-55 pins, ABLICNot recordedSOT-23-55 pinsABLIC
What it is
Not recorded
Maker
ABLIC
Package
SOT-23-5
Pins
5
Source
Published code list
Is it dead? The meter test is below: This part.
SiP21106DR-285-E3SOT-353LDO regulator, 5 pins, VishayLDO regulatorSOT-3535 pinsVishay
What it is
LDO regulator
Maker
Vishay
Package
SOT-353
Pins
5
Details
Linear voltage regulator IC: LDO, 2.85V±1%, 150mA, +CE
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
SMBG54CASMBG2 pins, VishayNot recordedSMBG2 pinsVishay
What it is
Not recorded
Maker
Vishay
Package
SMBG
Pins
2
Details
TVS: 60V, 6.9A, 600W(1ms), Bidirectional
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
SMBJ54A-TSMBTVS diode, 2 pins, INPAQ TechnologyTVS diodeSMB2 pinsINPAQ Technology
What it is
TVS diode
Maker
INPAQ Technology
Package
SMB
Pins
2
Details
Transient voltage supressor: Vbr=60.0..66.3V, Vrwm=54V, Ipp=6.9A, 600W(1ms)
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
SMF5V0A-MSOD-123FESD protection diode, 2 pins, VishayESD protection diodeSOD-123F2 pinsVishay
What it is
ESD protection diode
Maker
Vishay
Package
SOD-123F
Pins
2
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
SODJ54A-SHSOD-123FTVS diode, 2 pins, LRCTVS diodeSOD-123F2 pinsLRC
What it is
TVS diode
Maker
LRC
Package
SOD-123F
Pins
2
Details
Transient voltage supressor: Vrwm=54V, Vbr=60..66.3V, Ipp=20A(8.3ms), 200W(1ms)
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
TSMB120ASMBTVS diode, 2 pins, VishayTVS diodeSMB2 pinsVishay
What it is
TVS diode
Maker
Vishay
Package
SMB
Pins
2
Details
Transient voltage supressor: Vbr=114..126V, Vrwm=102V, Ipp=3.6A, 600W(1ms)
Source
Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
2 more parts have no package on record
- SiP21106DT-285-E3LDO regulator, VishayLDO regulatorNot recordedNot recordedVishay
  What it is
  LDO regulator
  Maker
  Vishay
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Linear voltage regulator IC: LDO, 2.85V±1%, 150mA, +CE
  Source
  Published code list
  Is it dead? The meter test is below: Voltage regulator.
- SMBS54ATVS diode, Formosa MicrosemiTVS diodeNot recordedNot recordedFormosa Microsemi
  What it is
  TVS diode
  Maker
  Formosa Microsemi
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Transient voltage supressor: Vrwm=54V, Vbr=60.0..66.3V, Ipp=6.9A, 600W(1ms)
  Source
  Published code list
  Is it dead? The meter test is below: TVS or ESD protection diode.

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.

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.

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.

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.

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