SMD code RS1M
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 are printed RS1M
Not sure which one you have?
Answer up to 4 quick questions and these 6 parts are ranked, with a meter test that settles it. It works on a dead part too.
Rectifier. What differs:
GRS1MSMA2 pins, Good-ArkSMA2 pinsGood-Ark
- What it is
- Rectifier
- Maker
- Good-Ark
- Package
- SMA
- Pins
- 2
- Details
- Rectifier, 100 V, 1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
RS1M-HFSMA2 pins, ComchipSMA2 pinsComchip
- What it is
- Rectifier
- Maker
- Comchip
- Package
- SMA
- Pins
- 2
- Details
- 1000 V, 1 A rectifier
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
RS1MFSMAF2 pins, YFWSMAF2 pinsYFW
- What it is
- Rectifier
- Maker
- YFW
- Package
- SMAF
- Pins
- 2
- Details
- Fast-recovery rectifier diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
TRS1MSMA2 pins, Galaxy MicroelectronicsSMA2 pinsGalaxy Microelectronics
- What it is
- Rectifier
- Maker
- Galaxy Microelectronics
- Package
- SMA
- Pins
- 2
- Details
- 1A, 1000V, 500ns, Surface Mount Fast Recovery Rectifiers
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
FR107MSOP-1010 pins, MIC GROUP RECTIFIERSMSOP-1010 pinsMIC GROUP RECTIFIERS
- What it is
- Rectifier
- Maker
- MIC GROUP RECTIFIERS
- Package
- MSOP-10
- Pins
- 10
- Details
- Fast Recovery Rectifier
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
1 more part has no package on record
SMF107AMSeCoSNot recordedNot recordedSeCoS
- What it is
- Rectifier
- Maker
- SeCoS
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon 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.
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.
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