The 2N2907 is a commonly available PNP bipolar junction transistor used for general purpose low-power amplifying or switching applications. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. This transistor was made by several manufacturers; Texas Instruments released a data sheet for their version of this part dated March 1973.The Transistor and Diode Data Book for Design Engineers, Texas Instruments, Inc., no date, publication number CC-413 71242-73-CSS, page 4-151 An "A" suffix indicates a slightly higher breakdown voltage. These transistors have an enduring popularity with electronics hobbyists.
Specifications It is a 0.6-ampere, 60-volt, 400-milliwatt transistor. Its transition frequency (where the current gain drops to one) under specified test conditions is 200 Megahertz. At low frequencies, the current gain (beta) is at least 100. The 2N2907 is used in a variety of analog amplification and switching applications.
Part numbers The 2N2907 (PNP) and 2N2222 (NPN) are complementary transistor pairs. Other types of transistors with different properties and connections have different part numbers. The prefix of each part number varies for each physical package type. Pin connections vary with different part numbers.
+ Transistor part numbers BJT Thru-hole Surface-mount TO-18 TO-92 SOT23 SOT223 PNP 2N2907 PN2907 MMBT2907 PZT2907A NPN 2N2222 PN2222 MMBT2222 PZT2222A
See also 2N3904 2N3906 2N3055 BC108 BC548 KT315
References
Further reading Historical Databooks Semiconductor Data Book, 916 pages, 1965, Motorola. Small-Signal Semiconductors Data Book, 1218 pages, 1987, Motorola. Transistor and Diode Data Book, 1258 pages, 1973, Texas Instruments.
External links
Datasheet for Fairchild Semiconductor's equivalent PN2907 (PDF)