New answers tagged surface-mount
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Problem with LED lamp PCB
Sometimes we don't have enough information to solve your problem. The next best thing, then, would be how to get more information.
So, my thoughts, in order, are...
Find a way to stop destroying the ...
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What is the type of this smd part?
From the package and the layout, it looks like a transistor.
Track width hints at high current, so it's most likely a MOSFET.
G3 is the gate resistor, R5 the pulldown resistor.
The drain goes to a 3-...
- 59.7k
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What is the type of this smd part?
That is a SOT-23-3 package, commonly used for transistors (BJT, MOSFET, etc.), voltage regulators, diodes, diode arrays, etc.
The designator Q2 would suggest it is ...
- 27.6k
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Accepted
How to infer resistor size from the manual of this microcontroller board?
The CAD files that @TimWescott referenced contain the PCB layout (in the schematic zip, not necessarily where you would expect it). As typical for ST, they are in Altium.
The footprints look like this:...
- 331k
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How to infer resistor size from the manual of this microcontroller board?
A solder bridge is either a blob of solder across two specially shaped pads, or a 0-ohm resistor, also called a jumper. That's it!
The name of the thing itself tells you what to use to short it: ...
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What LED PWM controller has marking AT508CS?
Perhaps this is a one-time programmable microcontroller pic12c508
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Need help identifying SMD IC
Function and pinout matches TPS560430Y, but there may be others with this pinout. The inductor 2.2 µH is a bit small for this circuit, but OK if used with <= 12 V input.
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Accepted
Identifying SMD diode
Got it working finally with
ST Zener Diodes ZMM5V1 5.1V 500mW
Hints from Kartman and Tim Williams helped . thank you
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SMD capacitor damaged - use of X2 class
As correctly noted, surge voltages are limited, so this is an unlikely failure mode.
It IS still over ratings, as others have noted. In particular, look at the peak voltage drop of the TVS diode. It ...
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SMD capacitor damaged - use of X2 class
Depends on Surge and Burst requirements you have to use a cap which will absorve the high voltage, for conducted emission no much problem, you could use any type for testing, works well. But if you ...
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Identifying SMD diode
Try tracing the circuit (follow traces and vias between components; remove components and check continuity if necessary). I would guess the circled diode is a zener, in MELF package. The left-hand ...
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Accepted
What type of SMD diodes are these?
I'd say those are 4 RD7.5S, Zener diodes made by Renesas:
https://www.renesas.com/us/en/general-parts/rd75s-diodes-constant-voltage
My Google search term: "RD7.5S"
You're quite lucky, that ...
- 16.4k
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What is an MLX12106J?
It is a sensor protection IC made by Melexis and the part is currently available. Try this link for the data sheet https://www.alldatasheet.com/view_datasheet.jsp?Searchword=MLX12106. The search term ...
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