SMD code ES-
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.
73 parts are printed ES-
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.
2SB1694SOT-323PNP transistor, 3 pins, JSCJPNP transistorSOT-3233 pinsJSCJ
- What it is
- PNP transistor
- Maker
- JSCJ
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, PNP
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
ABSS84ESL-HFSOT-883P-channel MOSFET, 3 pins, ComchipP-channel MOSFETSOT-8833 pinsComchip
- What it is
- P-channel MOSFET
- Maker
- Comchip
- Package
- SOT-883
- Pins
- 3
- Details
- -60 V, -0.13 A P-channel MOSFET
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
BSS84ESSOT-23P-channel MOSFET, 3 pins, Galaxy MicroelectronicsP-channel MOSFETSOT-233 pinsGalaxy Microelectronics
- What it is
- P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- -60V, P Channel, Small Signal MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
BSS84ESLSOT-883P-channel MOSFET, 3 pins, Galaxy MicroelectronicsP-channel MOSFETSOT-8833 pinsGalaxy Microelectronics
- What it is
- P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-883
- Pins
- 3
- Details
- -60V, P Channel, Small Signal MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
BSS84ESTSOT-523P-channel MOSFET, 3 pins, Galaxy MicroelectronicsP-channel MOSFETSOT-5233 pinsGalaxy Microelectronics
- What it is
- P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-523
- Pins
- 3
- Details
- -60V, P Channel, Small Signal MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
BSS84ESWSOT-323P-channel MOSFET, 3 pins, Galaxy MicroelectronicsP-channel MOSFETSOT-3233 pinsGalaxy Microelectronics
- What it is
- P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- -60V, P Channel, Small Signal MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
BSS84EVSOT-563Dual P-channel MOSFET, 6 pins, Galaxy MicroelectronicsDual P-channel MOSFETSOT-5636 pinsGalaxy Microelectronics
- What it is
- Dual P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-563
- Pins
- 6
- Details
- -60V, Dual P Channel MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET pair.
BZX585-B62SOD-523Zener diode, 2 pins, NexperiaZener diodeSOD-5232 pinsNexperia
- What it is
- Zener diode
- Maker
- Nexperia
- Package
- SOD-523
- Pins
- 2
- Pinout
- 1 cathode
- 2 anode
- Details
- 62 V ±2% voltage regulator (Zener) diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
CHT5551SGPSOT-363Dual NPN transistor, 6 pins, ChenmkoDual NPN transistorSOT-3636 pinsChenmko
- What it is
- Dual NPN transistor
- Maker
- Chenmko
- Package
- SOT-363
- Pins
- 6
- Details
- NPN SILICON Transistor, 160 V, 0.2 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor pair.
ESD4A5V5DWTSOT-563ESD protection diode, 6 pins, DiotecESD protection diodeSOT-5636 pinsDiotec
- What it is
- ESD protection diode
- Maker
- Diotec
- Package
- SOT-563
- Pins
- 6
- Details
- ESD Protection & Steering Diodes Array in SMD
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
GSFW0501SOT-883P-channel MOSFET, 3 pins, Good-ArkP-channel MOSFETSOT-8833 pinsGood-Ark
- What it is
- P-channel MOSFET
- Maker
- Good-Ark
- Package
- SOT-883
- Pins
- 3
- Details
- P-channel MOSFET, 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
SM2150FLSOD-123FSchottky diode, 2 pins, SeCoSSchottky diodeSOD-123F2 pinsSeCoS
- What it is
- Schottky diode
- Maker
- SeCoS
- Package
- SOD-123F
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
SMBJ180CSMBTVS diode, 2 pins, DOWOTVS diodeSMB2 pinsDOWO
- What it is
- TVS diode
- Maker
- DOWO
- Package
- SMB
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
TBSS84ESSOT-23P-channel MOSFET, 3 pins, Galaxy MicroelectronicsP-channel MOSFETSOT-233 pinsGalaxy Microelectronics
- What it is
- P-channel MOSFET
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- -60V, P Channel, Small Signal MOSFETs
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
1 more part has no package on record
DBTC-10-13X+RF coupler, Mini-CircuitsRF couplerNot recordedNot recordedMini-Circuits
- What it is
- RF coupler
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- RF directional coupler, 5-1000 MHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: This part.
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.
PNP transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Black probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
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.
P-channel MOSFET pair
Diode range, part lifted. Test drain to source first, then short gate to source and test again. Test each MOSFET on its own pins, as the datasheet's pinout gives them.
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.
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.
NPN transistor pair
Diode range, part lifted. Test each transistor on its own pins, as the datasheet's pinout gives them.
Working, it reads
Red probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
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.
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.
Printed with a code easy to misread as ES-
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 5 more parts.
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