SMD code 2V7
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.
17 parts are printed 2V7
Not sure which one you have?
Answer up to 4 quick questions and these 17 parts are ranked, with a meter test that settles it. It works on a dead part too.
MM3Z2V7CWSOD-323Zener diode, 2 pins, Yangjie Electronic TechZener diodeSOD-3232 pinsYangjie Electronic Tech
- What it is
- Zener diode
- Maker
- Yangjie Electronic Tech
- Package
- SOD-323
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MM3Z2V7CW-P2-HFSOD-323Zener diode, 2 pins, ComchipZener diodeSOD-3232 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SOD-323
- Pins
- 2
- Details
- 2.7 V 200 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TAR5S27SOT-23-5LDO regulator, 5 pins, ToshibaLDO regulatorSOT-23-55 pinsToshiba
- What it is
- LDO regulator
- Maker
- Toshiba
- Package
- SOT-23-5
- Pins
- 5
- Details
- TAR5S15 to TAR5S50 Point Regulators (Low-Dropout Regulator)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
BZX584B4V3SOD-523Zener diode, 2 pins, YFWZener diodeSOD-5232 pinsYFW
- What it is
- Zener diode
- Maker
- YFW
- Package
- SOD-523
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MZ0.5GN2V7SOD-80Zener diode, 2 pins, Master Instrument Corporation of ShanghaiZener diodeSOD-802 pinsMaster Instrument Corporation of Shanghai
- What it is
- Zener diode
- Maker
- Master Instrument Corporation of Shanghai
- Package
- SOD-80
- Pins
- 2
- Details
- Zener diode: 2.7V+-5%, Zzt=100, Izt=135mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
PZM2.7NBSOT-233 pins, NXPNot recordedSOT-233 pinsNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- SOT-23
- Pins
- 3
- Details
- 2.7V 300mW Zener
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
S-1335J2J-M5T1U3SOT-23-55 pins, ABLICNot recordedSOT-23-55 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-23-5
- Pins
- 5
- Details
- equivalent [2.85V LDO]
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
8 more parts have no package on record
MM5Z4V3BZener diode, Formosa MicrosemiZener diodeNot recordedNot recordedFormosa Microsemi
- What it is
- Zener diode
- Maker
- Formosa Microsemi
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MM5Z4V3B-Q1Zener diode, Formosa MicrosemiZener diodeNot recordedNot recordedFormosa Microsemi
- What it is
- Zener diode
- Maker
- Formosa Microsemi
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZY55-C2V7Zener diode, Taiwan SemiconductorZener diodeNot recordedNot recordedTaiwan Semiconductor
- What it is
- Zener diode
- Maker
- Taiwan Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Izt=5mA, Zzt=85, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C2V7Zener diode, Crownpo TechnologyZener diodeNot recordedNot recordedCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Zzt=85, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C2V7SZener diode, Crownpo TechnologyZener diodeNot recordedNot recordedCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Zzt=85, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CTZ55C2V7Zener diode, Compact TechnologyZener diodeNot recordedNot recordedCompact Technology
- What it is
- Zener diode
- Maker
- Compact Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Izt=5mA, Zzt=85, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRNC55C2V7-GZener diode, ComchipZener diodeNot recordedNot recordedComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Zt=85, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRSC55C2V7-GZener diode, ComchipZener diodeNot recordedNot recordedComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.57..2.84V, Zt=85, Izt=5mA, 500mW
- 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.
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.
Printed with a code easy to misread as 2V7
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 2V7
For a marking with its end worn or burnt off. Each code has a page of its own.
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