NPN Transistor Derating Guide Lines


Transistor Design


NPN Temperature-Power Derating Curves, BJT's

Complete List, NPN BJT Derating curves [below], PNP BJT Derating curves
2N718A Derating curves, NPN, General Purpose Transistor
2N930 Derating curves, NPN, Low Power Transistor
... ... 2N930-UB, NPN, Low Power Transistor, SMD
2N1613 Derating curves, NPN, Medium Power Transistor
2N1711Derating curves, NPN, Low Power Transistor
2N1890 Derating curves, NPN, Low Power Transistor
2N2218 Derating curves, NPN, Low Power Transistor
2N2219 Derating curves, NPN, Low Power Transistor
2N2221 Derating curves Case TO18, NPN Switching Transistor
... 2N2221AUA Derating curves adhesive-mount TO18, NPN Switching Transistor
... 2N2221A Derating curves Case-mounted TO18, NPN Switching Transistor
2N2222 Derating curves Case TO18, NPN Switching Transistor, General Purpose
... 2N2222AUA Derating curves adhesive-mount TO18, NPN Switching Transistor
... 2N2222A Derating curves Case-mounted TO18, NPN Switching Transistor
2N2432 Derating curves, NPN, Low Power Transistor, TO-18 Can
2N2484 Derating curves NPN Amplifier Transistor
... 2N2484UA Derating curves NPN Amplifier Transistor, SMD
... 2N2484UB Derating curves NPN Amplifier Transistor, SMD
... 2N2484UBC Derating curves NPN Amplifier Transistor, SMD
2N3019 Derating curves, NPN Low Power Transistor
2N3055 Derating curves, NPN Power Transistor
2N3418 Derating curves, NPN Medium Power Transistor
2N3419 Derating curves, NPN Medium Power Transistor
2N3420 Derating curves, NPN Medium Power Transistor
2N3421 Derating curves, NPN Medium Power Transistor
... 2N3421U4 Derating curves, NPN Medium Power Transistor, SMD
2N3439 Derating curves, NPN Low Power Transistor
2N3440 Derating curves, NPN Low Power Transistor
2N3441 Derating curves, NPN Medium Power Transistor
2N3498 Derating curves, NPN Switching Transistor, BJT
2N3499 Derating curves, NPN Switching Transistor, BJT
2N3500 Derating curves, NPN Switching Transistor, BJT
2N3501 Derating curves, NPN Switching Transistor, BJT
2N3715 Derating curves, NPN High-Power Transistor, TO-3 package
2N3716 Derating curves, NPN High-Power Transistor
2N3739 Derating curves, NPN Power Transistor, TO-66 package
2N3846 Derating curves, NPN Power Transistor, TO-63 package
2N3847 Derating curves, NPN Power Transistor, TO-63 package
2N4150 Derating curves, NPN Low Power Transistor, TO-5 package
2N4237 Derating curves, NPN Transistor
2N4238 Derating Curves, NPN Transistor, TO-39 metal Can
2N4239 Derating Curves, NPN Transistor, TO-39 metal Can
2N5002 Derating curves, NPN High Power Transistor, TO-59 package
2N5004 Derating curves, NPN High Power Transistor, TO-59 package
2N5237 Derating curves, NPN Low Power Transistor
2N5238 Derating curves, NPN Low Power Transistor, TO-46 package
2N5339 Derating curve, NPN Power Transistor, TO-39 package
2N5581 Derating curves, NPN Switching Transistor, TO-46 package
2N5582 Derating curves, NPN Switching Transistor
2N6193 Derating curves, NPN Switching Transistor
2N6249 Derating curves, NPN Power Transistor, TO-3 package
... 2N6249T3 Derating curves, NPN Power Transistor
2N6250 Derating curves, NPN Power Transistor
... 2N6250T3 Derating curves, NPN Power Transistor
2N6251 Derating curves, NPN Power Transistor
... 2N6251T3 Derating curves, NPN Power Transistor
2N6300 Derating curves, NPN Power Transistor, TO-66 package
2N6301 Derating curves, NPN Power Transistor, TO-66 package
2N6306 Derating curves, NPN Power Transistor, TO-3 package
... 2N6306T1 Derating curves, NPN Power Transistor
... 2N6306T3 Derating curves, NPN Power Transistor
2N6308 Derating curves, NPN Power Transistor, TO-3 package
2N6546 Derating curves, NPN Power Transistor, TO-3 package
... 2N6546-T3 NPN Power Transistor in a TO-257 package
2N6547 Derating curves, NPN Power Transistor, TO-3 package
... 2N6547T3 Derating curves, NPN Power Transistor, TO-257 package
2N6676 Derating curves, NPN Power Transistor, TO-3 package
... 2N6676T1, NPN Power Transistor, TO-254AA package
... 2N6676T3, NPN Power Transistor, TO-257AA package
2N6678 Derating curves, NPN Power Transistor, TO-3 package
2N6691 Derating curves, NPN Power Transistor, TO-61 package
2N6693 Derating curves, NPN Power Transistor, TO-61 package





Page provides; Package styles, MIL Specs,
and Maximum Ratings

Suffix's UA, and UB are surface mount devices.
All other devices are through hole components.

Manufacturers of Transistors

How to Derate;
Guideline for Derating Components

Use the Transistor Curves in the table to
determine how much to derate operational
wattage. Temperature derating is a standard
design practice for electrical engineers.

Maximum Junction Temperature;
is the max operational temperature when
the DC wattage rating goes to zero


Related Topics:
Transistor Circuits
Transistor Amplifier Circuits
Transistor Terms
Unit Test Acronyms



Engineering Phrases:
Transistor, Component Reliability,
Derate, Semiconductor, Ambient Temp,
MTBF, Temperature, How To, Guideline,
BJT Burn-Out, Design Failure, Ambient,
Thermal Resistance, Junction Rating



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