SMD code 5Ec
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, c, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and 5E was searched.
98 parts are printed 5Ec
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.
NCP715SQ25SOT-23-5LDO regulator, 5 pins, onsemiLDO regulatorSOT-23-55 pinsonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear Voltage Regulator - Ultra-Low Iq, Wide Input Voltage, Low Dropout
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
NSVRB751S40SOD-523Schottky diode, 2 pins, onsemiSchottky diodeSOD-5232 pinsonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- SOD-523
- Pins
- 2
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
NSVRB751V40SOD-323Schottky diode, 2 pins, onsemiSchottky diodeSOD-3232 pinsonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- SOD-323
- Pins
- 2
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
PESDHC2FD4V8UHFSOD-882ESD protection diode, 2 pins, PrisemiESD protection diodeSOD-8822 pinsPrisemi
- What it is
- ESD protection diode
- Maker
- Prisemi
- Package
- SOD-882
- Pins
- 2
- Details
- ESD protection diode, 4.8 V working
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
RB751S40SOD-523Schottky diode, 2 pins, onsemiSchottky diodeSOD-5232 pinsonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- SOD-523
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751V40SOD-323Schottky diode, 2 pins, onsemiSchottky diodeSOD-3232 pinsonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- SOD-323
- Pins
- 2
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
S-LRB751V-40T1GSOD-323Schottky diode, 2 pins, LRCSchottky diodeSOD-3232 pinsLRC
- What it is
- Schottky diode
- Maker
- LRC
- Package
- SOD-323
- Pins
- 2
- Details
- Schottky diode, VR 30 V, IF 0.03 A, VF Max 0.37 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
UMZ16NFMSOT-323ESD protection diode, 3 pins, ROHMESD protection diodeSOT-3233 pinsROHM
- What it is
- ESD protection diode
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- Transient Voltage Suppressor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
UMZ16NFMFHSOT-323ESD protection diode, 3 pins, ROHMESD protection diodeSOT-3233 pinsROHM
- What it is
- ESD protection diode
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- Transient Voltage Suppressor (AEC-Q101 qualified)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
ESD1006D5V0SOD-882ESD protection diode, 2 pins, YFWESD protection diodeSOD-8822 pinsYFW
- What it is
- ESD protection diode
- Maker
- YFW
- Package
- SOD-882
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
RB751V-40S2SOD-323Schottky diode, 2 pins, CYStekSchottky diodeSOD-3232 pinsCYStek
- What it is
- Schottky diode
- Maker
- CYStek
- Package
- SOD-323
- Pins
- 2
- Details
- 40 V, 0.03 A Schottky diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
4 more parts have no package on record
NCP705MT33LDO regulator, onsemiLDO regulatorNot recordedNot recordedonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- LDO Regulator - Ultra-Low Quiescent Current, I 13 A, Ultra-Low Noise
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
VLIN1626-DD1ESD protection diode, VishayESD protection diodeNot recordedNot recordedVishay
- What it is
- ESD protection diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Single-Line Bidirectional ESD-Protection Diode in DFN1006-2B
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
74AUP1T50GWNXPNot recordedNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Buffer with voltage-level translator
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AUP1T50GXNXPNot recordedNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Buffer with voltage-level translator
- 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.
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.
Schottky diode
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.15 to 0.45 V anode to cathode, roughly half a silicon diode, and open the other way.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- A reading the wrong way round as well: leaky.
- Open both ways: failed open.
- 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 large Schottky can read about 0.1 V forward and beep like a short, and leaks a little the wrong way when good, more when warm. It is shorted only if it reads the same both ways. Measure it cold, beside an identical cold one.
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.
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.
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