LM78L 05 ACZ

[Crambone]

Guys how can I test this correctly? I put in a cheap Chinese transistor tester and it shows the following as seen in picture.

[Kim Christensen]

Those testers can't check a LM78L05... Because it's not a transistor, FET, diode, capacitor, resistor, etc.
They don't check IC voltage regulators, which is what a LM78L05 is.

[Crambone]

OK thanks I figured it wasn’t testing it correctly. I tested voltages in circuit and it’s working properly after I found a 100uf cap that tested 17uf.

[barshatriplee]

The easiest way to check these voltage regulator ICs is to use a multimeter and a DC power supply. Give the appropriate input voltage according to the datasheet. And see if you are getting the desired output voltage in the output pin.

[Zero999]

OK thanks I figured it wasn’t testing it correctly. I tested voltages in circuit and it’s working properly after I found a 100uf cap that tested 17uf.

What made you think the tester wasn't working? It's a transistor tester, yet the L78L05 is a voltage regulator, an integrated circuit, not a transistor. The only way to test it is to build a circuit with it.

[Jwillis]

Its an honest mistake to make for beginners. Package design can throw off a novice if they are not familiar with the numbers on the component or with data sheets that may be supplied. even understanding what the data sheet is saying can be a challenge for a beginner.
I did a quick search for the component   LM78L 05 ACZ and found this for you https://www.ti.com/lit/ds/symlink/lm78l.pdf?ts=1685812998671&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLM78L%252Fpart-details%252FLM78L05ACZ%252FNOPB . The numbers can be slightly different based on the type of package but essentially function the same way. The data sheet will often show you a basic functional circuit.

Good luck and have fun.   

[donlisms]

And... some component testers recognize voltage regulators, though I can't remember which one(s)!  It may have been mentioned in a comparison of the Peak tester and some other.  Sorry.  But I know I didn't imagine it... :-)

[Jwillis]

And... some component testers recognize voltage regulators, though I can't remember which one(s)!  It may have been mentioned in a comparison of the Peak tester and some other.  Sorry.  But I know I didn't imagine it... :-)

I believe the TSH-06F Integrated Circuit IC Tester does. Linear regulators only like the 78XX series.