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5 votes

Identify 5 pin smd marked "KV.." from motherboard led tv Panasonic

It's a Silergy SY8089AAAC step down converter. (Source: lcsc.com)
nanash1's user avatar
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0 votes

Strange Resistor Situation

Assuming the resistors were broken cleanly and didn't look burned before you worked on the board, my first guess would be that they cracked due to board flex. A very common cause of excessive flex is ...
Drew's user avatar
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1 vote

Identify smd component ( p_j89 ck)

It's probably a Panjit P6SMBJ30CA TVS diode. The markings look a bit different on current Panjit diodes, (Source: lcsc.com) but I found this picture of a different Panjit diode that shows a four ...
nanash1's user avatar
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0 votes

Identify part marked 'Z14' or '214'

Chris, That does look like a NC7WZ14P6X. Furthermore, along with the SMD capacitor and push button, it appears that the Z14 is being used as a hardware button debouncer.
jasonwnc's user avatar
2 votes
Accepted

Are multiple SMD Chip Resistors in Series as Safe as a Wirewound Resistor for Mains Voltage?

Chip resistors in offline power supplies is common -- do check that the datasheet provides nominal (operating) and surge/peak voltage ratings, however! Then, use enough in series to meet rating even ...
Tim Williams's user avatar
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1 vote

Are multiple SMD Chip Resistors in Series as Safe as a Wirewound Resistor for Mains Voltage?

There are a few things you have to consider if you are trying to meet a safety standard. First, you already mentioned - don't exceed the max rating of any one resistor. Keep in mind, the voltage ...
MOSFET's user avatar
  • 4,000
1 vote
Accepted

Troubles in understanding the TGA2214-CP microwave power amplifier datasheet

In p. 9, they give a schematic of the way to mount the amplifier (I believe). But at the end of the same page, they specify that pins 1, 10, and 5, 6 require a bias network. Do they mean the 10 Ohm ...
Rohat Kılıç's user avatar
1 vote

Soldering flux and cleaner for analog SMT boards

The usual-kind of "no-clean" or "water-soluble" fluxes are very bad for analog circuits with high-impedance nodes. I have had very bad experiences even with regular digital (SMOS) ...
Ale..chenski's user avatar
  • 40.8k
0 votes

Locating the temp sensor on motor controller

The "TH" is centrally located on the PCB and probably is a thermistor. '473' suggests that it is 47kΩ at 25°C. That's inadequate to fully specify the part, but one might get close by using ...
Spehro Pefhany's user avatar
7 votes

Can anyone identify this 6-pin SMD integrated circuit? (multi-charger)

It's an Onsemi BC847BPDW1 dual transistor. (Source: lcsc.com)
nanash1's user avatar
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