SMD code 20p
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.
20p on a chip capacitor
20 pF
20 pF capacitor
The p is both the decimal point and the unit: 20 pF.
Check it with a meter
Lift one end and measure it on a capacitance range. A good one reads close to 20 pF. In circuit the meter also sees everything connected across it, so the reading means little until it is out. A failed one usually reads near 0 Ω, or a steady low resistance, on the ohms range, often from a crack. On the board a shorted capacitor shorts its whole rail. A failed reading does not change what to fit: the marking still says 20 pF.
On a transistor or diode body (SMB, USP-6B, SOT-23), 20p is a part code instead. Those parts are listed below.
20 parts are printed 20p
Not sure which one you have?
Answer up to 4 quick questions and these 20 parts are ranked, with a meter test that settles it. It works on a dead part too.
CPDUT20VMUHT-HFDFN1610-2ESD protection diode, 2 pins, ComchipESD protection diodeDFN1610-22 pinsComchip
- What it is
- ESD protection diode
- Maker
- Comchip
- Package
- DFN1610-2
- Pins
- 2
- Details
- 20 V unidirectional ESD protection diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
MFPZ20SOD-123FZener diode, 2 pins, Taitron ComponentsZener diodeSOD-123F2 pinsTaitron Components
- What it is
- Zener diode
- Maker
- Taitron Components
- Package
- SOD-123F
- Pins
- 2
- Details
- SMD Zener Diodes (Two Terminals) - 800mW
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
WS20DPDFN1610-2ESD protection diode, 2 pins, WayonESD protection diodeDFN1610-22 pinsWayon
- What it is
- ESD protection diode
- Maker
- Wayon
- Package
- DFN1610-2
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
BF545ASOT-23JFET, 3 pins, Philips SemiconductorsJFETSOT-233 pinsPhilips Semiconductors
- What it is
- JFET
- Maker
- Philips Semiconductors
- Package
- SOT-23
- Pins
- 3
- Details
- N-channel silicon junction field-effect transistors
- Source
- Published code list
Is it dead? The meter test is below: JFET.
BZD27C20PSOD-123FTVS diode, 2 pins, PanjitTVS diodeSOD-123F2 pinsPanjit
- What it is
- TVS diode
- Maker
- Panjit
- Package
- SOD-123F
- Pins
- 2
- Details
- 16V, 150W, Surface Mount TVS
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
IXD1216B222ERUSP-6C6 pins, IXYSNot recordedUSP-6C6 pinsIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- USP-6C
- Pins
- 6
- Details
- Linear voltage regulator IC: 2.2V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
IXD1216B222MRSOT-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: 2.2V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
IXD1216B222PRSOT-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: 2.2V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
TK11220BUSOT-89-55 pins, TokNot recordedSOT-89-55 pinsTok
- What it is
- Not recorded
- Maker
- Tok
- Package
- SOT-89-5
- Pins
- 5
- Details
- VR-IC: LDO, CE, 2V±2%, 150mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
XC6103A122MRSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- CMOS-IC: VDet 2.2V, 5%, Hst, -MR, Reset PPO, Wt=6.25ms, Rt=3.13ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6216B222ERUSP-6C6 pins, TorexNot recordedUSP-6C6 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- Linear voltage regulator IC: 2.2V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
4 more parts have no package on record
GSEZ20B050ESD protection diode, Good-ArkESD protection diodeNot recordedNot recordedGood-Ark
- What it is
- ESD protection diode
- Maker
- Good-Ark
- Package
- Not recorded
- Pins
- Not recorded
- Details
- ESD protection diode, VRWM 20 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
JEU20DPTVS diode, JieJieTVS diodeNot recordedNot recordedJieJie
- What it is
- TVS diode
- Maker
- JieJie
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
IXD1216B222QR-GIXYSNot recordedNot recordedNot recordedIXYS
- What it is
- Not recorded
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: 2.2V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
TK11220BMTokNot recordedNot recordedNot recordedTok
- What it is
- Not recorded
- Maker
- Tok
- Package
- Not recorded
- Pins
- Not recorded
- Details
- VR-IC: LDO, CE, 2V±2%, 150mA
- 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.
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.
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.
JFET
Ohms range for drain to source, diode range for the gate, part lifted.
Working, it reads
Drain to source conducts both ways at a few hundred ohms, depending on the part, and some meters beep on it. The gate reads one junction to drain and to source, about 0.6 to 0.7 V, and open the other way.
Dead, it reads
- The gate the same both ways to drain or source, near 0 V with a continuous beep: gate shorted.
- Drain to source open: the channel has 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:
- Drain to source resistance varies from part to part. An identical part elsewhere on the board shows what is normal.
- Watch for:
- A good channel can beep like a short between drain and source. That is normal; the gate junction says whether it has failed.
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.
Printed with a code easy to misread as 20p
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes that begin with 20p
For a marking with its end worn or burnt off. Each code has a page of its own.
Codes not listed here are printed on 136 more parts.
Did you find your part?
Open this in the search to correct a character or try another package.