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LDO quel code utiliser?

Bonjour a tous, 

Je souhaite intégrer dans l'onglet "electronic component" d'expert TOOL un LDO TL1963A (en SOT-263)...

A l'heure actuelle, je l'ai renseigné en circuit intégré "ECIC", SOT233, SOT83 medium power "ECDS 03" car je l'utilise en plage basse (5V en sortie)...
Avez-vous une meilleur definition?

j'avoue avoir hesité entre circuit intégré (ECIC) et emiconducteur discret (ECDS) 

Merci d'avance pour votre aide.

 

Thomas C.

 

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IC failure

Hello,

when calculating the failure rate of a microcontroller should the lambda_0_th be simply 0.075, or should every part of the microcontroller be considered and evaluated separately? For example,

  • 0.075 for the core,
  • 0.053 for the internal SRAM,
  • 0.06 for internal Flash and 3x0.021 for the GPIO/PWM and I2C modules.

Obviously the latter results in a much higher failure rate so using that (even if incorrect) would mean an error towards safety but i wonder what the authors had in mind.

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Integrated circuit activation energy

Why in the evaluation of the acceleration factor of thermal cycling the simplified formula is assuming an activation energy Ea = 0.122eV? In particular, for the failure rate evaluation of the integrated circuit, the pi_thermal is assuming an activation energy of 0.7, while the pi_tcycase and pi_tcysolderjoints are assuming an Ea of 0.122eV.

 

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