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SMD code E in SOD-723

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.

6 parts in SOD-723 are printed E

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.

  • GSRB520G-30SOD-723Schottky diode, 2 pins, Good-ArkSchottky diode2 pinsGood-Ark
    What it is
    Schottky diode
    Maker
    Good-Ark
    Package
    SOD-723
    Pins
    2
    Details
    Schottky diode, 30 V, 200 mA
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Schottky diode.

    Datasheetfor GSRB520G-30, opens in a new tab
  • LRB520G-30T1GSOD-723Schottky diode, 2 pins, LRCSchottky diode2 pinsLRC
    What it is
    Schottky diode
    Maker
    LRC
    Package
    SOD-723
    Pins
    2
    Details
    Schottky diode, VR 30 V, IF 0.1 A, VF Max 0.45 V
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Schottky diode.

    Datasheetfor LRB520G-30T1G, opens in a new tab
  • RB520G-30SOD-723Schottky diode, 2 pins, JSCJSchottky diode2 pinsJSCJ
    What it is
    Schottky diode
    Maker
    JSCJ
    Package
    SOD-723
    Pins
    2
    Details
    Schottky diode, 30 V, 0.1 A
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Schottky diode.

    Datasheetfor RB520G-30, opens in a new tab
  • S-LRB520G-30T1GSOD-723Schottky diode, 2 pins, LRCSchottky diode2 pinsLRC
    What it is
    Schottky diode
    Maker
    LRC
    Package
    SOD-723
    Pins
    2
    Details
    Schottky diode, VR 30 V, IF 0.1 A, VF Max 0.45 V
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Schottky diode.

    Datasheetfor S-LRB520G-30T1G, opens in a new tab
  • SCS520GSOD-723Schottky diode, 2 pins, SeCoSSchottky diode2 pinsSeCoS
    What it is
    Schottky diode
    Maker
    SeCoS
    Package
    SOD-723
    Pins
    2
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Schottky diode.

    Datasheetfor SCS520G, opens in a new tab
  • RB520G-30GHSOD-7232 pins, Zowie TechnologyNot recorded2 pinsZowie Technology
    What it is
    Not recorded
    Maker
    Zowie Technology
    Package
    SOD-723
    Pins
    2
    Details
    Diode: SBD, 30V, 100mA, Vf<0.45V(10mA)
    Source
    Published code list

    Is it dead? The meter test is below: Silicon diode.

  • 9 more parts have no package on record. Nothing rules them out, so they stay.

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.

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.

Silicon diode

Diode range, part lifted or one leg off the pad. Red probe on the anode.

Working, it reads

About 0.5 to 0.8 V anode to cathode, and open the other way. Small switching diodes read about 0.6 to 0.7 V; large rectifiers can read a little lower.

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: failed open.
  • A reading the wrong way round as well: 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 three-pin body can hold two diodes. With a common pin they read two junctions from that pin, just like a transistor; in series they read two drops end to end. Test each pair the datasheet names.

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.

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.

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.

RF amplifier

Voltage, board powered, on the output pin that the bias resistor or choke feeds.

Working, it reads

The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.

Dead, it reads

  • Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
  • Output pin at the full supply voltage: open inside, no current flowing.
On the board:
Measured on the board with power on; the bias network is part of the reading.
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 figures depend on the part and its bias resistor. The datasheet gives both.

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.

Codes that begin with E

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 3,083 more parts.

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