SMD code 16M
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.
16M on a chip resistor
16 MΩ
16 MΩ resistor
The M is both the decimal point and the multiplier: 16 MΩ.
Check it with a meter
Lift one end and measure across it. A good one reads 16 MΩ. Measuring it in circuit reads the parallel combination of everything around it, which is almost always lower, never higher: well above 16 MΩ on the board is a fault. Open, or well above 16 MΩ, means it has failed: burnt, cracked or corroded. That does not change what to fit: the marking still says 16 MΩ. A burnt resistor usually means the part it feeds drew too much, so find that before fitting a new one.
On a transistor or diode body (SMB, SOT-23, SOT-323), 16M is a part code instead. Those parts are listed below.
Not sure which one you have?
Answer up to 4 quick questions and these 5 parts are ranked, with a meter test that settles it. It works on a dead part too.
The only part printed 16M in our tables
INA199C2DCK
- What it is
- Current sense amplifier
- Maker
- Texas Instruments
- Package
- SOT-363
- Pins
- 6
- Details
- 26-V, Bidirectional, Zero-Drift, Low- or High-Side, Voltage-Output, Current-Shunt Monitor
- Source
- From the manufacturer's datasheet
Is it dead?
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 16M
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 16M
For a marking with its end worn or burnt off. Each code has a page of its own.
Open this in the search to correct a character or try another package.