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am o dioda SMD intr-un invertor de tv philips pe care scrie doar C2In circuit sunt o gramada din astea de aceeia nu cred ca e vreun zenner.stie cineva ce dioda este asta?

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Dupa poza ta pare mai mult capsula SOD523, scoate si tu una din alea bune de pe placa si vezi ce tensiune de deschidere are (Vf). Uita-te in catalogul de SMD-uri a lui Turuta, ca o gasesti acolo.Daca e siliciu (Vf>0.55) atunci poti sa probezi daca este zener folosind o sursa reglabila de tensiune (vreo 30V ) si un rezistor (de 1k sa zicem) inseriat cu dioda (dioda o polarizezi invers). Cresti usor tensiunea si daca vezi ca tensiunea pe dioda nu se stabilizeaza atunci e dioda normala.

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