2N3764 Temperature-Power Derating Curve [2N3763, 2N3764, 2N3765]
PNP Silicon Switching Transistor. Package, TO-39 Metal Can [Through-Hole].
2N3764 Transistor Operational Power Derating Curve
Use the graph above to determine the maximum power dissipation for the 2N3764 based on operational case temperature [Tc]. Attach a heat sink to increase operating temperature with out the requirement to derate the device. The 2N3764 transistor in a TO-39 package will accept a compression style heat sink, attached to the metal can of the device. It's a bit harder to attach a heat sink to the TO-46 package. The graph applies to case temperature in free air [still air] with no heat-sink and no adjacent heat generating components. Use forced air to increase the operating range of the 2N3764.
The terminals of the 2N3764 may also be used to conduct heat away from the device and into the attached printed circuit board. If the terminals are used as heat conductors, make the leads as short as possible and of course try not to use a transistor socket. The heat conduction of the surface mount package may also be increase by using larger copper lands on the PWB to conduct heat away from the component.
Additional Transistor Derating Curves, PNP Transistor Derating Graphs
Temperature derating is a standard design practice for electrical engineers.
Refer to MIL-PRF-19500/396K; Semiconductor Device, Transistor, PNP, Silicon, Switching, Types 2N3762, 2N3762L, 2N3762U4, 2N3762UA, 2N3763, 2N3763L, 2N3763U4, 2N3763UA, 2N3764, and 2N3765, JAN, JANTX, JANTXV, JANS, JANSM, JANSD, JANSP, JANSL, JANSR, JANSF, JANSG, JANSH JANHCA, JANKCA, JANKCAM, JANKCAD, JANKCAP, JANKCAL, JANKCAR, JANKCAF, JANKCAG, and JANKCAH, [TO-5, TO-39, TO-46, U4/UA surface mount]
2N3764 Maximum Operational Ratings: [Ta = 250C]
Collector Emitter Voltage = 40 volts dc Vceo]
Collector Base Voltage = 40 volts dc [Vcbo]
Emitter Base Voltage = 5 volts dc [Vebo]
Collector Current = 1.5 amps dc [Ic]
Power Dissipation 250C = 500 mWatt [Pt]
Operating Temperature = -65 to +2000C [Tj]
Storage Temperature = -65 to +2000C [Tstg]
Listing of Transistor Manufacturers and vendors.
How to Derate; Guideline for Derating Electronic Components
