Sujet : Re: Low voltage zener diodes
De : JL (at) *nospam* gct.com (john larkin)
Groupes : sci.electronics.designDate : 08. Oct 2024, 15:48:16
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <79hagjlha6od027t50pebie9sdcslsesec@4ax.com>
References : 1
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On Tue, 8 Oct 2024 14:54:39 +0530, Pimpom <
Pimpom@invalid.invalid>
wrote:
When I tested some low voltage zener diodes (<<5V) 30-40 years ago, I
found that they didn't have even a reasonably sharp knee, behaving more
like LEDs in forward mode, maybe worse. Do I remember correctly? Are
they still the same?
Yup. Soft knees and terrible tempcos.
Bandgaps like LM4040 are great. They get down to 0.1% and 50 PPM/deg
C. 1.2 to 5 volts.
Re: Low voltage zener diodes