earckens
Member
For use in a low-power H-bridge (less than 12V 100mA) connected to outdoor liquid sensing level probe I hesitate between TO-251 and SOT23 package.
I see following pro's and con's for TO-251:
Pro:
- good power dissipation
- high surge voltage resistance (600V vs 30V for SOT23)
(hence suitable for outdoor environment use, better voltage surge protection)
- higher surge current (see line above)
- more rugged
Con:
- bulky, takes >4x more space on pcb
- hard to replace in double sided pcb
- unit cost
What would be the preferred choice for this application?
I see following pro's and con's for TO-251:
Pro:
- good power dissipation
- high surge voltage resistance (600V vs 30V for SOT23)
(hence suitable for outdoor environment use, better voltage surge protection)
- higher surge current (see line above)
- more rugged
Con:
- bulky, takes >4x more space on pcb
- hard to replace in double sided pcb
- unit cost
What would be the preferred choice for this application?