SMD code 70 in SOT-363

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.

1 part in SOT-363 is printed 70

Not sure which one you have?

Answer up to 4 quick questions and these 21 parts are ranked, with a meter test that settles it. It works on a dead part too.

µPA801TC-FBSOT-3636 pins, RenesasNot recorded6 pinsRenesas
What it is
Not recorded
Maker
Renesas
Package
SOT-363
Pins
6
Details
Si-npn: Dual, VHF/UHF, 20V, 100mA, 200mW, 4,5GHz, B=70..140
Source
Published code list
Is it dead? The meter test is below: This part.
14 more parts have no package on record. Nothing rules them out, so they stay.
- BZX584B24Zener diode, Formosa MicrosemiZener diodeNot 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.
  Datasheetfor BZX584B24, opens in a new tab
- TSD027-70WTSchottky diode, Taitron ComponentsSchottky diodeNot recordedTaitron Components
  What it is
  Schottky diode
  Maker
  Taitron Components
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Schottky Barrier Diodes (Two Terminals)
  Source
  Manufacturer datasheet
  Is it dead? The meter test is below: Schottky diode.
  Datasheetfor TSD027-70WT, opens in a new tab
- ADP162ACBZ-1.2-R74 pins, Analog DevicesNot recorded4 pinsAnalog Devices
  What it is
  Not recorded
  Maker
  Analog Devices
  Package
  Not recorded
  Pins
  4
  Details
  equivalent [1.2V LDO]
  Source
  Published code list
  Is it dead? The meter test is below: Voltage regulator.
- AP8822N-40GIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, 200ms Rt delay, H-free
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8822N-40GSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, 200ms Rt delay, H-free
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8822N-40PIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, 200ms Rt delay
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- AP8822N-40PSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
  What it is
  Voltage supervisor
  Maker
  Anwell Semiconductor
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, 200ms Rt delay
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- BFQ704 pins, InfineonNot recorded4 pinsInfineon
  What it is
  Not recorded
  Maker
  Infineon
  Package
  Not recorded
  Pins
  4
  Details
  npn fT 5.2GHz 15V 35mA
  Source
  Published code list
  Is it dead? The meter test is below: This part.
- EC95810N40C7IVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
  What it is
  Voltage supervisor
  Maker
  E-CMOS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, Td=200ms
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- EC95810N40C7SVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
  What it is
  Voltage supervisor
  Maker
  E-CMOS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 4.0V±2%, -Reset ODO, Td=200ms
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- EUA2011AHEutech MicroelectronicsNot recordedNot recordedEutech Microelectronics
  What it is
  Not recorded
  Maker
  Eutech Microelectronics
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Linear IC: APA, BTL, class-D, 2.4..5.5V, 2.5W(5V/4), shutdown
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- IXD5126N26A7R-GVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
  What it is
  Voltage supervisor
  Maker
  IXYS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 2.6V±0.8%, -Reset ODO
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- IXD5127C55CNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
  What it is
  Voltage supervisor
  Maker
  IXYS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 5.5V±0.8%, -Reset PPO, -MR, 200ms Rt delay
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- IXD5127N55HNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
  What it is
  Voltage supervisor
  Maker
  IXYS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 5.5V±0.8%, +Reset ODO, -MR, 200ms Rt delay
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.

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.

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.

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.

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 70

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 13 more parts.

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