NEED INFORMATION- SE555DG4

Jayakumara krishnasetty

Expert 2440 points

Hi Can you please provide the following information for the SE555DG4 Part ?

1. Junction Temperature Max (Tj Max)

2. Typical Power dissipation (Pd typ)

3. Maximum Power dissipation (Pd max)

4. Thermal Resistance Junction to Ambient (Theta JA

5. Thermal Resistance Junction to Board (Theta JB)

6. Thermal Resistance Junction to Case (Theta JC)

7. Weight

0 Wen-Shin Wang over 13 years ago

Hello Jayakumara,

The Clocks and Timers Forum would be the best place to have this question answered, and I will move this post over to that forum.

Thanks and Best Regards,

Wen-Shin Wang

0 Wen-Shin Wang over 13 years ago in reply to Wen-Shin Wang

Hello Jayakumara,

Apologies, I can help out with this question.

I am check on the thermal data, which also affects Pdiss, and will get back to you with a response asap.

In the meantime, Tj(max) = 150C and the weight = 82mg.

Thanks and Best Regards,

Wen-Shin Wang

0 Wen-Shin Wang over 13 years ago in reply to Wen-Shin Wang

Hello Jayakumara,

Thank you for your patience. Please see the thermal data below:

Typical Power dissipation (Pd typ)
- T_J = T_A + ( R _θJA × P_D ) => 150C = 25C+ (125C/W * Pdiss) => Pdiss = 1W
Maximum Power dissipation (Pd max)
- T_J = T_A + ( R _θJA × P_D ) => 150C = -40C + (125C/W * Pdiss) => Pdiss = 1.52W
Thermal Resistance Junction to Ambient (Theta JA)
- 125C/W
Thermal Resistance Junction to Board (Theta JB)
- 63.5C/W
Thermal Resistance Junction to Case (Theta JC)
- 67.5C/W

Thanks and Best Regards,

Wen-Shin Wang

Clock & timing forum