Product Overview
2N3906 PNP Small Signal Transistor, 40 V, 200 mA, TO-92
Condition
New old stock, unused. The photo shows a representative unit from our stock. Same or next business day shipping from our Idaho warehouse. Honest pricing, no nonsense. Online since 1999. We are here for our customers, with a no-hassle satisfaction guarantee.
Product Overview
This is the PNP half of the 2N3904 / 2N3906 pair, the general purpose small signal transistor that has been quietly switching relays and buffering op amp outputs since the JEDEC registration, and it is second-sourced by a dozen houses. The bodies photographed here are black TO-92 with three bright leads, marked in three lines: A 2N / 3906 / 4H.
Key Features
- PNP silicon, general purpose amplifier and switch
- VCEO 40 V, VCBO 40 V, VEBO 5 V, per onsemi's published 2N3906 data
- IC continuous 200 mA; PD 625 mW at 25 degC, per the same data
- fT 250 MHz minimum, Cobo 4.5 pF maximum, VCE(sat) 0.25 V maximum at 10 mA
- hFE 100 minimum at IC = 10 mA, VCE = 1 V
- TO-92 plastic package, three leads; complementary NPN is the 2N3904
- Marked A 2N3906 4H on the photographed units; the A and 4H are maker and lot codes, not part of the type number
- Verify against onsemi's published 2N3906 data before designing in.
Applications
- Low current relay and LED driving from logic
- Small signal audio preamp and buffer stages
- High side switching in battery powered boards
- Breadboard and repair bench stock for legacy PNP positions
Frequently Asked Questions
How many should I order? Order the count your build needs; we hold 8 of these and sell them each, so a repair takes one and a small run takes what is left. Shipping is $8 flat rate and free on orders over $28, so small parts like this ship smartest as part of a larger order.
Which lead is the collector? We cannot tell you from these units. The photographed bodies carry no pin legend, and TO-92 2N3906 pinout is not universal across second sources, so check your own maker's outline drawing or meter the part before you solder it in.
Eight of them, marked A 2N3906 4H, the PNP half of the pair every breadboard has already met.
