LF357 substitute

[Maurizio2]

Hi!
The LT1122 is a good choice.
Buy it from an authorized dealer.

[kt315]

https://youtube.com/shorts/UNFWit6c4...ZOL-khAZ9Qclrz

thank you. my assumption, above, is right. the legs are cutted.

[kt315]

take attention on the pics LF357 New Old stock - Geotech Forums (geotech1.com)

[Emersonpaz]

https://youtube.com/shorts/UNFWit6c4...ZOL-khAZ9Qclrz

[kt315]

I personally didn't like these and I've bought them and to me they are fake. If you find one like the one in this picture, I think it's original, but yes, they have been discontinued.

i had learned pics of 357s. and yes, i noted original one has cropped edges legs. is it a rule for all 357s or not i can not know but it is sure good sign of to be the original.

[GeoMax]

Hello Algan,

I checked the website. It says it's old stock. But the price is also quite high.

[algan]

Hi GeoMax, I came across this by accident, but this store is in Germany and has LF357N. I think it is original, but until it is tested, it is impossible to say for sure.
https://elektronik-alles.de/LF357N/016931

[Detectorist#1]

Hi algan,
According to the label on the top, this part is manufactured in 16-th week of 1991 year (if the label is not fake). It will be more good if DIY peoples haves possibility to use contemporary parts.

[algan]

LF356 are being also fake. But original one works just fine. i mean DP. i bought 357 on link given Emersonpaz and will inform you result.

I personally didn't like these and I've bought them and to me they are fake. If you find one like the one in this picture, I think it's original, but yes, they have been discontinued.

[kt315]

LF356 are being also fake. But original one works just fine. i mean DP. i bought 357 on link given Emersonpaz and will inform you result.

[Detectorist#1]

Hi KT315,
Are you sure - in detector with 40-160us first delay (according known time-diagrams for Delta Pulse), 50V/us will give different result in comparison with 12V/us for LF356 (still in production)?

[kt315]

Lt1055 est plus proche pour lf357n

low Slew Rate 12V/µs Min. you have to have 50 slew rate on the board.

[Qiaozhi]

Lt1055 est plus proche pour lf357n

Please make your posts in English.

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[GeoMax]

https://www.futurlec.com/Linear/LF357Npr.shtml

Hi Pechkata

The LF357 is already obsolete and hasn't been manufactured for many years. Therefore, I doubt they're selling genuine parts. They're probably selling counterfeit Chinese LF357 chips.

[pechkata]

https://www.futurlec.com/Linear/LF357Npr.shtml