• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 345 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

NEED INFORMATION- OPA548T-1G3

Jayakumara krishnasetty
Expert 2440 points
Other Parts Discussed in Thread: OPA548

Hi Can you please provide the following information for the OPA548T-1G3 Part ?

1. Typical Power dissipation (Pd typ)

2. 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

Regards,

Jayakumara K

jayakumara.krishnasetty@honeywell.com

  • 0
    TI__Guru* 93105 points

    Hello Jayakumara,

    Please see the information I inserted along with your questions about the OPA548:

    1. Typical Power dissipation (Pd typ)

    The typical power dissipation will depend on your specific application, but in a broader sense this could be interpreted as the idling or quiescent power. In that case, the typical OPA548 supply is specified as +/-30 V (60 V) at a typical current of 17 mA. The quiescent power is simply PD = VS x IQ = (60 V) (17 mA) = 1.02 W. 

    2. Maximum Power dissipation (Pd max)

    Maximum power dissipation is a function of a number of electrical and thermal constraints. The Safe Operating Area (SOA) curves shown on page 8 of the OA548 data sheet provides the complete information. The highest dissipation (PD) shown in the SOA curves is 50 W, with a case temperature (TC) of 25 C.

    4. Thermal Resistance Junction to Ambient (Theta JA

    The OPA548 data sheet lists θJA as 65 °C/W (typical ).

    5. Thermal Resistance Junction to Board (Theta JB)

    We do not provide a number because of the variables associated with the particular installation for which we have no control over.

    6. Thermal Resistance Junction to Case (Theta JC)

    The OPA548 data sheet lists ΘJC as 2 °C/W for (typical) and 2.5 °C/W for f > 50 Hz (typical).

    7. Weight

    I just measured the weight of some OPA548T devices. The weight is approximately 2.0 grams.

    Regards, Thomas

    PA - Linear Applications Engineering