SMD code 62s
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.
62s on a chip resistor
43.2 Ω
43.2 Ω resistor, 1%
EIA-96 precision code: 62 selects 4.32 from the E96 series and S multiplies by 10. These are 1% parts. The trailing S is also used as a decimal point, so this could instead be 62 Ω. Measure it before fitting a replacement. If it has failed and reads open or high, that settles nothing: measure the same position on a working board.
Check it with a meter
Lift one end and measure across it. A good one reads 43.2 Ω within 1%. Measuring it in circuit reads the parallel combination of everything around it, which is almost always lower, never higher: well above 43.2 Ω on the board is a fault. Open, or well above 43.2 Ω, means it has failed: burnt, cracked or corroded. That does not change what to fit: the marking still says 43.2 Ω. 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 (SOT-23-5, SOT-23, SOT-89), 62s is a part code instead. Those parts are listed below.
10 parts are printed 62s
Not sure which one you have?
Answer up to 4 quick questions and these 10 parts are ranked, with a meter test that settles it. It works on a dead part too.
MM3Z62SSOD-323Zener diode, 2 pins, Galaxy MicroelectronicsZener diodeSOD-3232 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-323
- Pins
- 2
- Details
- 62V, 400mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TMM3Z62SSOD-323Zener diode, 2 pins, Galaxy MicroelectronicsZener diodeSOD-3232 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-323
- Pins
- 2
- Details
- 62V, 400mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BAT62SOT-143Schottky diode, 4 pins, InfineonSchottky diodeSOT-1434 pinsInfineon
- What it is
- Schottky diode
- Maker
- Infineon
- Package
- SOT-143
- Pins
- 4
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
BAT62-07WSOT-343Schottky diode, 4 pins, InfineonSchottky diodeSOT-3434 pinsInfineon
- What it is
- Schottky diode
- Maker
- Infineon
- Package
- SOT-343
- Pins
- 4
- Details
- Diode: Dual, Schottky, 40V, 20mA, Vf<1.0V, Cd<0.6pF
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
BAT62-08SSOT-363Schottky diode, 6 pins, InfineonSchottky diodeSOT-3636 pinsInfineon
- What it is
- Schottky diode
- Maker
- Infineon
- Package
- SOT-363
- Pins
- 6
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
ELM990971ACSOT-89LDO regulator, 3 pins, ELM TechnologyLDO regulatorSOT-893 pinsELM Technology
- What it is
- LDO regulator
- Maker
- ELM Technology
- Package
- SOT-89
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 9.7V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
MMBFJ270SOT-23P-channel MOSFET, 3 pins, Texas InstrumentsP-channel MOSFETSOT-233 pinsTexas Instruments
- What it is
- P-channel MOSFET
- Maker
- Texas Instruments
- Package
- SOT-23
- Pins
- 3
- Details
- P-Channel Switch
- Source
- Published code list
Is it dead? The meter test is below: P-channel MOSFET.
MMBZ5262SPTSOT-23Zener diode, 3 pins, Chenmko EnterpriseZener diodeSOT-233 pinsChenmko Enterprise
- What it is
- Zener diode
- Maker
- Chenmko Enterprise
- Package
- SOT-23
- Pins
- 3
- Details
- Zener diode: 49.98..52.02V, Izt=2.5mA, Zzt=125, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
MMCZ5262SPTSOT-23Zener diode, 3 pins, Chenmko EnterpriseZener diodeSOT-233 pinsChenmko Enterprise
- What it is
- Zener diode
- Maker
- Chenmko Enterprise
- Package
- SOT-23
- Pins
- 3
- Details
- Zener diode: 49.98..52.02V, Izt=2.5mA, Zzt=125, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
MMHZ5262SPTSOD-123Zener diode, 2 pins, Chenmko EnterpriseZener diodeSOD-1232 pinsChenmko Enterprise
- What it is
- Zener diode
- Maker
- Chenmko Enterprise
- Package
- SOD-123
- Pins
- 2
- Details
- Zener diode: 49.98..52.02V, Izt=2.5mA, Zzt=125, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener 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.
Zener diode
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- Open both ways, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: leaky.
- 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 meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
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.
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.
P-channel MOSFET
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
Red probe on the drain, black on the source: about 0.4 to 0.9 V, the body diode. Open the other way. The gate reads open to both other pins, both ways.
Dead, it reads
- Drain to source the same both ways, near 0 V with a continuous beep, and still so after shorting gate to source: shorted. The classic failure.
- The gate reads low to source or drain: gate shorted. Often all three pins end up shorted together.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, so gate to source reads that resistor, which is not a fault. Lift a leg to be sure.
- 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 diode range can charge the gate enough to turn the part on, and then drain to source reads near 0 both ways on a good part. Short gate to source and test again before you condemn it.
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 62s
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
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