2N4931U4 Temperature-Power Derating Curve [2N4930U4, 2N3743U4]
PNP Silicon High Voltage Transistor. Package, U4 SMD [Surface Mount].
Transistor Operational Power Derating Curve
Use the chart to determine the maximum allowable power dissipation with increasing ambient temperature [still-air]. Note that the graph does use case temperature to derate the device.
Note that the curve relates to the devices case temperature of the surface mount package shown to the left. Additional package styles are available, refer to the links to the left.
Also refer to additional Transistor Derating Curves. Also refer to How to Interpret Transistor Derating Curves.
Temperature derating is a standard design practice for electrical engineers.
Refer to MIL-PRF-19500/397H; Semiconductor, Device, Transistor, PNP, Silicon, Types 2N3743, 2N3743U4, 2N4930, 2N4930U4, 2N4931, AND 2N4931U4, JAN, JANTX, JANTXV, JANS, JANHC, and JANKC, [TO-39, U4 surface mount, Semiconductor-Die]
2N4931 Maximum Operational Ratings:
Collector Emitter Voltage = 250 volts dc
Collector Base Voltage = 250 volts dc
Emitter Base Voltage = 5 volts dc
Collector Current = 200mA dc
Power Dissipation 250C Tc = 10 Watt [Case]
Operating Temperature = -65 to +2000C
How to Derate; Guideline for Derating Electronic Components.
To answer the Question; How do I derate a PNP Transistor.
Listing of Transistor Manufacturers and vendors.
Also refer to a Listing of Component Manufacturers
