What's this please? (Component Advice)

[fzabkar]

https://xonstorage.blob.core.windows.net/pdf/xysemi_xr1151_apr22_xonlink.pdf (XR1151)

The AO3401 MOSFET appears to be a clone:

https://www.aliexpress.com/w/wholesale-3401-sot23.html

[psysc0rpi0n]

A few more.
This is on a small board of a shaving machine station, used to wash and dry the head of the shaving machine, following this post:
https://www.eevblog.com/forum/repair/attempt-to-repair-a-non-repairable-shaving-machine-base/

Edited;

Is this something like an OnSemi FDMS86252??
https://www.onsemi.com/download/data-sheet/pdf/fdms86252-d.pdf

Edited 1;
I added 1 more screenshot.

[gamalot]

A few more.
This is on a small board of a shaving machine station, used to wash and dry the head of the shaving machine, following this post:
https://www.eevblog.com/forum/repair/attempt-to-repair-a-non-repairable-shaving-machine-base/

Edited;

Is this something like an OnSemi FDMS86252??
https://www.onsemi.com/download/data-sheet/pdf/fdms86252-d.pdf

Edited 1;
I added 1 more screenshot.

https://www.azoteq.com/images/stories/pdf/iqs127_datasheet.pdf

[psysc0rpi0n]

A few more.
This is on a small board of a shaving machine station, used to wash and dry the head of the shaving machine, following this post:
https://www.eevblog.com/forum/repair/attempt-to-repair-a-non-repairable-shaving-machine-base/

Edited;

Is this something like an OnSemi FDMS86252??
https://www.onsemi.com/download/data-sheet/pdf/fdms86252-d.pdf

Edited 1;
I added 1 more screenshot.

https://www.azoteq.com/images/stories/pdf/iqs127_datasheet.pdf

Is that replying to the 127DWF?

Edited;
Yeah, got it thanks...

I have more 2 attached.

[gamalot]

A few more.
This is on a small board of a shaving machine station, used to wash and dry the head of the shaving machine, following this post:
https://www.eevblog.com/forum/repair/attempt-to-repair-a-non-repairable-shaving-machine-base/

Edited;

Is this something like an OnSemi FDMS86252??
https://www.onsemi.com/download/data-sheet/pdf/fdms86252-d.pdf

Edited 1;
I added 1 more screenshot.

https://www.azoteq.com/images/stories/pdf/iqs127_datasheet.pdf

Is that replying to the 127DWF?

Edited;
Yeah, got it thanks...

I have more 2 attached.

YL LBC807-40WT1G

N02 DDTC113ZCA-7-F

[psysc0rpi0n]

I have another one exactly like the YL but it's YM instead. For now I'll assume it's also a PNP transistor but I think it can be also a Diode!

[gamalot]

I have another one exactly like the YL but it's YM instead. For now I'll assume it's also a PNP transistor but I think it can be also a Diode!

LBC817-40WT1G

[psysc0rpi0n]

Next one is a (what I think to be) SOT-23 with T4 and a 6 but the 6 is rotated, like 90º.
I am really trying to figure out on myself the possible components, but I'm not sure I'm on the right track.

I search on 2 different sites
https://www.s-manuals.com/smd/t4

https://smd.yooneed.one/code5434.html

and also aliexpress
https://www.aliexpress.com/item/1005006226877180.html

but possibilities are still quite a few. Need help with this one too, please!

[fzabkar]

NTS4409NT1G, VB Semi, N-Channel MOSFET, 20V, 4A, SC-70:

https://pl.aliexpress.com/w/wholesale-t4-sot23.html?initiative_id=

https://pl.aliexpress.com/w/wholesale-NTS4409NT1G.html?initiative_id=

https://xonstorage.blob.core.windows.net/pdf/vbsemielec_nts4409nt1gvb_apr22_xonlink.pdf (datasheet)

[tigrr]

The microcircuit is in a Samsung charger, it is in an 8-pin SMD-case, but pins 5-6-7 are combined into one.
The manufacturer's logo resembles a rhombus-star.
There is a marking DS8223 on the body.

Two questions:
1) What is the correct name for this type of case?
2) We need a datasheet for the microcircuit and analogs for replacement.

 

[fzabkar]

1) What is the correct name for this type of case?

It looks like SOP-8 OR SOIC-8.

This is a good resource, but I couldn't find anything that matches a Drain output to pins 5,6,7:

https://vip-cxema.org/index.php/online-raschjoty/393-podbor-shim-kontrollera-po-vyvodam

[nali]

I wonder if anyone can ping this part? I've tried my bookmarked sites but nothing so far. It's part of a fan PWM and as far as I can tell is a NMOS device. The part marking is JNGA or 9JNGA
(Sorry I don't have a better pic, nor do I have the board at the moment... I'm trying to help a friend with some initial remote diagnostics)

[fzabkar]

Q1 suggests that it's a MOSFET or BJT. There appears to be a 100 ohm resistor (R610, 101) in the base or gate, so that would be typical for a MOSFET. The Source appears to be grounded, so I'm guessing that it's an N-channel MOSFET.

[gamalot]

Try this:

https://lcsc.com/product-detail/MOSFETs_Vishay-Intertech-SQ2364EES-T1_GE3_C3290054.html?s_z=n_SQ2364

[nali]

Try this:

https://lcsc.com/product-detail/MOSFETs_Vishay-Intertech-SQ2364EES-T1_GE3_C3290054.html?s_z=n_SQ2364

Winner! Thank you. Where did you find it?

I knew it was going to be a NMOS but I wanted to analyse why it failed. It's got a high Rds, it looks like it's switching a high load in a high temperature environment so looks like it's basically cooked itself. In case you're wondering it's in an EV charger, and fortunately the failure mode was to go short, so all it did was turn on the fans 100%. So, annoying but didn't harm the charger.

[gamalot]

Try this:

https://lcsc.com/product-detail/MOSFETs_Vishay-Intertech-SQ2364EES-T1_GE3_C3290054.html?s_z=n_SQ2364

Winner! Thank you. Where did you find it?

I knew it was going to be a NMOS but I wanted to analyse why it failed. It's got a high Rds, it looks like it's switching a high load in a high temperature environment so looks like it's basically cooked itself. In case you're wondering it's in an EV charger, and fortunately the failure mode was to go short, so all it did was turn on the fans 100%. So, annoying but didn't harm the charger.

I noticed that its mark pattern looked like Vishay's, so I searched on Taobao (the most famous shopping website in China), which is what I usually do first, but unfortunately I didn't find any clues. Then I went to LCSC to check Vishay's MOSFET devices in  SOT23 package, and in the datasheet of a random SQ23xx series device, I saw its mark as "9Exxx", so I Googled the keywords "Vishay Mark 9Jxxx", and the second result of the search was SQ2364.

[jebem]

Among a lot of identified chips, the Alientek DM40C DMM uses some obscure SMD marking that seems to leave Google in the dark.

They are:
IC   LT61-117   6-pin smd
IC   LT61-113   6-pin smd
IC   174 F163H 4-pin smd
IC   174 F163H 4-pin smd
 
By their positioning on the PCB, they could be Optocouplers or digital isolators like the two  EL3H7 chips and the CA-IS3741HW that are also used in the model.

Just can't find any description matching the chip package and markings.
Does somebody recognize these chip markings?
Thanks for reading.

[gamalot]

Among a lot of identified chips, the Alientek DM40C DMM uses some obscure SMD marking that seems to leave Google in the dark.

They are:
IC   LT61-117   6-pin smd
IC   LT61-113   6-pin smd
IC   174 F163H 4-pin smd
IC   174 F163H 4-pin smd
 
By their positioning on the PCB, they could be Optocouplers or digital isolators like the two  EL3H7 chips and the CA-IS3741HW that are also used in the model.

Just can't find any description matching the chip package and markings.
Does somebody recognize these chip markings?
Thanks for reading.

It is obvious that LT61-113 and LT-117 are transformers. In your picture, the two small 6-pin chips with only half of their bodies exposed are driver chips.

---

Although I can't see the marks on them, I guess the two 6-pin chips are the low-power push-pull drivers that are more common in China, namely VPS8504/8505. If I were the designer, I would choose the VPS8505 with synchronization function.

https://lcsc.com/product-detail/Power-Management-Specialized-PMIC_VPSC-VPS8505_C2986360.html

For the chip with the 174 mark, it should be an optocoupler, perhaps a Chinese alternative to TLP174 with a larger pin pitch.

[jebem]

It is obvious that LT61-113 and LT-117 are transformers. In your picture, the two small 6-pin chips with only half of their bodies exposed are driver chips.
---
Although I can't see the marks on them, I guess the two 6-pin chips are the low-power push-pull drivers that are more common in China, namely VPS8504/8505. If I were the designer, I would choose the VPS8505 with synchronization function.

Thank you for the info! You are absolutely right on the LT61-xxx. They are transformers for two power supplies.

On a closer look to some other screenshots I took from published videos, indeed the two smaller 6-pin chips shows the markings of VPS8504B Micropower Isolation Power Supply chips, driving the LT61-nnn transformers.

The secondaries are connected to SD rectifier diodes followed by capacitor filters as expected, although using different configuration.

While the DC output of the LT61-117 uses a full wave rectifier, the DC output of the LT61-113 seems to be feeding a 5-pin chip marked with what I believe is 6106, so probably a LT6106 high side current sense amplifier.

I will have to open my DM40C one of these days to have a closer look.

[gamalot]

While the DC output of the LT61-117 uses a full wave rectifier, the DC output of the LT61-113 seems to be feeding a 5-pin chip marked with what I believe is 6106, so probably a LT6106 high side current sense amplifier.

The 5-pin device is the MaxLinear SPX3819 LDO in a SOT23-5 package.

https://lcsc.com/product-detail/Voltage-Regulators-Linear-Low-Drop-Out-LDO-Regulators_MaxLinear-SPX3819M5-L-TR_C9056.html

---

Those rectifier diodes are B0520LW.

https://lcsc.com/product-detail/Schottky-Diodes_FUXINSEMI-B0520LW_C7503118.html?s_z=n_B0520LW

[jebem]

While the DC output of the LT61-117 uses a full wave rectifier, the DC output of the LT61-113 seems to be feeding a 5-pin chip marked with what I believe is 6106, so probably a LT6106 high side current sense amplifier.

The 5-pin device is the MaxLinear SPX3819 LDO in a SOT23-5 package.

https://lcsc.com/product-detail/Voltage-Regulators-Linear-Low-Drop-Out-LDO-Regulators_MaxLinear-SPX3819M5-L-TR_C9056.html

Yes, that makes more sense.
After checking more pictures, it seems that that chip marking is either G106 or G125, not 6106.

Thank you!

[ponch0v]

I hope this is the correct thread for this question...

I'm trying to identify some vintage electronics and havent any any success for one. Im sure its a long shot here, but hoping to get lucky someone recognizes it. Im not sure it's test equipment, but the other objects around it suggest that it might be (HP 130C oscilloscope, Fluke 893C voltmeter (and a ADDS Regent 25 terminal). This is the best image I can get (its a screenshot from an 80s movie) unfortunately. I thought the strange case shape would be a giveaway to what it is, but havent found anything thats not a rectangular box from that era (mid 80s at the latest).

It appears to be mostly a crt screen with maybe a few controls on the right. Its possible its some device inside some other bracket/holder but the fact that the other objects on the cart are off the shelf, suggests its not modified.

I thought I was getting close with portable tvs from that time, but no match yet.


Anyone have any ideas? Thanks for any help!

[tautech]

I hope this is the correct thread for this question...

I'm trying to identify some vintage electronics and havent any any success for one. Im sure its a long shot here, but hoping to get lucky someone recognizes it. Im not sure it's test equipment, but the other objects around it suggest that it might be (HP 130C oscilloscope, Fluke 893C voltmeter (and a ADDS Regent 25 terminal). This is the best image I can get (its a screenshot from an 80s movie) unfortunately. I thought the strange case shape would be a giveaway to what it is, but havent found anything thats not a rectangular box from that era (mid 80s at the latest).

It appears to be mostly a crt screen with maybe a few controls on the right. Its possible its some device inside some other bracket/holder but the fact that the other objects on the cart are off the shelf, suggests its not modified.

I thought I was getting close with portable tvs from that time, but no match yet.


Anyone have any ideas? Thanks for any help!

Welcome to the forum.

There are better threads specific to the film set and such:
https://www.eevblog.com/forum/testgear/digital-oscilloscope-as-a-film-prop/
https://www.eevblog.com/forum/chat/movie-scopes-(and-other-tm-props)/

Good luck with your search.

[helius]

Most likely a TV waveform monitor. They were made with fewer controls compared to oscilloscopes and generally had rear-panel inputs which distinguishes them from scopes.

[Frequencymodulator]

Hello everyone, I am currently repairing a Logicdata standing-desk controller.. 

I reverse engineered quite a bit of the PCB, but i just cant find out what those two parts are...

Maybe someone can quickly identify those.

Many thanks!