LM7909 regulator extinct

[NoisyIndividual]

I just tried to buy some 7909 regulators in a TO-220 package to repair a Vestax mixer.
(+9v / -9v supplies for op-amps)

Seems they are now practically unobtainium, though 7809 still available.
You have been warned!

 

[Khron]

7812/7912 not an option?

 

[NoisyIndividual]

7812/7912 not an option?

That turns a repair into a mod.
And they use 10v caps.

 

[Khron]

Even with 9V regulators, that's cutting it REALLY close...

 

[Newmarket]

5x L7909CV -9V Voltage Regulator IC (5 Pieces) | Bright Components

 

[cyrano]

Strange.

Reichelt.de and several others still seem to have stock:

https://www.reichelt.com/de/en/voltage-regulator-1-5-a-negative-to-220--a-7909-p23493.html

 

[Newmarket]

Strange.

Reichelt.de and several others still seem to have stock:

https://www.reichelt.com/de/en/voltage-regulator-1-5-a-negative-to-220--a-7909-p23493.html

yes. But they do seem rare now.
No stock at eg Farnell (UK)

 

[NoisyIndividual]

I found none at Farnell, RS, Mouser, Cricklewood Electronics.

 

[cyrano]

Stranger...

Cant find any on UK sites. Plenty on Amazon, Alibaba and eBay. Also, other sites on the mainland seem to have them in stock.

Could it be only the TO220 form factor is end-of-life?

 

[NoisyIndividual]

All of the links in this thread appear to be Chinese.
I perhaps should have mentioned I am specifically looking to buy known reputable products from the likes of Farnell etc. by TI / On / ST etc.

It is these products that now seem to be very difficult to source in the TO-220 package.

 

[pucho812]

when in doubt check octopart

 

[Newmarket]

Medium term maybe need to look at using 337 regulators. More components I know but if needs must. Also likely less noisy. Alternatively may be able to use positive regulator depending on PSU detail.

 

[cyrano]

All of the links in this thread appear to be Chinese.
I perhaps should have mentioned I am specifically looking to buy known reputable products from the likes of Farnell etc. by TI / On / ST etc.

It is these products that now seem to be very difficult to source in the TO-220 package.

Reichelt.de isn't Chinese and I've never seen fake parts coming from them in Germany...

 

[NoisyIndividual]

https://www.reichelt.com/de/en/voltage-regulator-1-5-a-negative-to-220--a-7909-p23493.html
This part is made by Hottech Semiconductor, in China.
It is not the TI/On/ST type of product I prefer to install and sell to my customers.

 

[KA-Electonics.com]

Mouser have a few 7908's in stock: https://www.mouser.com/c/?q=512-KA7908TU

The KA7909TU is long gone.

NTE1967 Data sheet: https://www.nteinc.com/specs/1900to1999/pdf/nte1961.pdf
7909's aka NTE1967: NTE Electronics Inc. | Electronic Components Supplier | Distributor Inventory Search

DigiKey show 161 in marketplace stock which look to be at NTE: https://www.digikey.com/en/products...7/11644680?s=N4IgTCBcDaIHYBcCmBGAnANgOwgLoF8g

 

[Mr. Moscode]

Is it used to filter hum out or does the circuit need 9 V exactly? If it's just for hum then use a 7808 or do this trick. Put 1 or 2 diodes, bands pointing to ground, in series with the ground pin of a 7808 and you'll have either an 8.6v or 9.2v regulator. Bypass the diodes with a 10 uf lytic