SMD code 224
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.
224 on a chip resistor
220 kΩ
220 kΩ resistor, 5%
22 followed by 4 zeros. Three digits is normally the 5% series. The same marking also reads as 220 nF on a capacitor, and nothing in the code says which; the body of the part does.
Other readings of the same characters, most likely first
- 220 nF capacitor
Check it with a meter
Lift one end and measure across it. A good one reads 220 kΩ within 5%. Measuring it in circuit reads the parallel combination of everything around it, which is almost always lower, never higher: well above 220 kΩ on the board is a fault. Open, or well above 220 kΩ, means it has failed: burnt, cracked or corroded. That does not change what to fit: the marking still says 220 kΩ. A burnt resistor usually means the part it feeds drew too much, so find that before fitting a new one.
On a transistor or diode body (SOD-123F, SMA, SOT-23), 224 is a part code instead. Those parts are listed below.
23 parts are printed 224
Not sure which one you have?
Answer up to 4 quick questions and these 23 parts are ranked, with a meter test that settles it. It works on a dead part too.
LM224PTTSSOP-14Operational amplifier, 14 pins, STMicroelectronicsOperational amplifierTSSOP-1414 pinsSTMicroelectronics
- What it is
- Operational amplifier
- Maker
- STMicroelectronics
- Package
- TSSOP-14
- Pins
- 14
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
TPM27224-DF4RDFN8 pins, 3PEAKNot recordedDFN8 pins3PEAK
- What it is
- Not recorded
- Maker
- 3PEAK
- Package
- DFN
- Pins
- 8
- Details
- Dual 2-A High-Speed, Low-Side Gate Driver
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
IXD1216B652ERUSP-6C6 pins, IXYSNot recordedUSP-6C6 pinsIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- USP-6C
- Pins
- 6
- Details
- Linear voltage regulator IC: 6.5V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
IXD1216B652MRSOT-23-55 pins, IXYSNot recordedSOT-23-55 pinsIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: 6.5V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
IXD1216B652PRSOT-89-55 pins, IXYSNot recordedSOT-89-55 pinsIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- SOT-89-5
- Pins
- 5
- Details
- Linear voltage regulator IC: 6.5V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LM224DTSOIC-1414 pins, STMicroelectronicsNot recordedSOIC-1414 pinsSTMicroelectronics
- What it is
- Not recorded
- Maker
- STMicroelectronics
- Package
- SOIC-14
- Pins
- 14
- Details
- equivalent LM224N
- Source
- Published code list
Is it dead? The meter test is below: This part.
R1126N241BSOT-23-55 pins, Nisshinbo Micro DevicesNot recordedSOT-23-55 pinsNisshinbo Micro Devices
- What it is
- Not recorded
- Maker
- Nisshinbo Micro Devices
- Package
- SOT-23-5
- Pins
- 5
- Details
- VR-IC: LDO, LN, CE, 2.4V±2%, 150mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
R3112N241ASOT-23-55 pins, Nisshinbo Micro DevicesNot recordedSOT-23-55 pinsNisshinbo Micro Devices
- What it is
- Not recorded
- Maker
- Nisshinbo Micro Devices
- Package
- SOT-23-5
- Pins
- 5
- Details
- CMOS-IC: Voltage Detector 2,4V, Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
7 more parts have no package on record
BGU7224RF amplifier (MMIC), 6 pins, NXPRF amplifier (MMIC)Not recorded6 pinsNXP
- What it is
- RF amplifier (MMIC)
- Maker
- NXP
- Package
- Not recorded
- Pins
- 6
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
LM224D/DTOperational amplifier, STMicroelectronicsOperational amplifierNot recordedNot recordedSTMicroelectronics
- What it is
- Operational amplifier
- Maker
- STMicroelectronics
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
M2284A31DDC-DC converter, 6 pins, Global Mixed-mode TechnologyDC-DC converterNot recorded6 pinsGlobal Mixed-mode Technology
- What it is
- DC-DC converter
- Maker
- Global Mixed-mode Technology
- Package
- Not recorded
- Pins
- 6
- Details
- 4A 2.2MHz, COT Synchronous Step-Down Converter
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM2241-3.3XTDI6GLDO regulator, 6 pins, SG MicroLDO regulatorNot recorded6 pinsSG Micro
- What it is
- LDO regulator
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 6
- Details
- 3.3 V output, 40V, 300mA, Low Quiescent Current and Low Dropout Voltage Linear Regulator
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
IXD1216B652QR-GIXYSNot recordedNot recordedNot recordedIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: 6.5V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
KIC7224T5Voltage supervisor, KECVoltage supervisorNot recordedNot recordedKEC
- What it is
- Voltage supervisor
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 2.4V±1%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
S-1335F36-A4T2U34 pins, ABLICNot recordedNot recorded4 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- Not recorded
- Pins
- 4
- Details
- equivalent [3.6V LDO]
- 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.
RF amplifier
Voltage, board powered, on the output pin that the bias resistor or choke feeds.
Working, it reads
The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.
Dead, it reads
- Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
- Output pin at the full supply voltage: open inside, no current flowing.
- On the board:
- Measured on the board with power on; the bias network is part of the reading.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- The figures depend on the part and its bias resistor. The datasheet gives both.
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.
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.
Printed with a code easy to misread as 224
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes not listed here are printed on 2 more parts.
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