SMD code 7Da
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, a, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and 7D was searched.
97 parts are printed 7Da
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.
TBAS70-04TSOT-523Schottky diode, 3 pins, Galaxy MicroelectronicsSchottky diodeSOT-5233 pinsGalaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOT-523
- Pins
- 3
- Details
- 0.07A, 70V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
UMZU6.2NFMSOT-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.
UMZU6.2NFMFHSOT-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.
AP7343-105W5-7SOT-23-5LDO regulator, 5 pins, Diodes IncorporatedLDO regulatorSOT-23-55 pinsDiodes Incorporated
- What it is
- LDO regulator
- Maker
- Diodes Incorporated
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.05V±1%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
APX803L20-35C3SOT-323Voltage supervisor, 3 pins, Diodes IncorporatedVoltage supervisorSOT-3233 pinsDiodes Incorporated
- What it is
- Voltage supervisor
- Maker
- Diodes Incorporated
- Package
- SOT-323
- Pins
- 3
- Details
- Voltage detector IC: 3.5V±1.5%, -Reset ODO, Rdt=220ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
ELM7341NAB1ASOT-23-5Voltage supervisor, 5 pins, ELM TechnologyVoltage supervisorSOT-23-55 pinsELM Technology
- What it is
- Voltage supervisor
- Maker
- ELM Technology
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 4.1V±1.2%, -Reset ODO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
FT532DaSOT-23-5LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-23-55 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DbSOT-23-5LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-23-55 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DcSOT-23-5LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-23-55 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DdSOT-353LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-3535 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DeSOT-353LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-3535 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DfSOT-353LDO regulator, 5 pins, Fremont Micro DevicesLDO regulatorSOT-3535 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DgSOT-23LDO regulator, 3 pins, Fremont Micro DevicesLDO regulatorSOT-233 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FT532DhSOT-23LDO regulator, 3 pins, Fremont Micro DevicesLDO regulatorSOT-233 pinsFremont Micro Devices
- What it is
- LDO regulator
- Maker
- Fremont Micro Devices
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 700mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
1 more part has no package on record
AP7343-105FS4-7BLDO regulator, Diodes IncorporatedLDO regulatorNot recordedNot recordedDiodes Incorporated
- What it is
- LDO regulator
- Maker
- Diodes Incorporated
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 1.05V±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.
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.
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.
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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