Product Overview
Motorola 2N3906 - PNP Small Signal Switching Transistor, 40V, TO-92
Condition
New. The photo shows a representative unit from our stock.
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Product Overview
The 2N3906 is a PNP silicon general purpose amplifier and switch in TO-92, published at 40 V, 200 mA and 625 mW (onsemi's published 2N3906 data).
20 are on the shelf, sold each. The representative unit photographed is a black TO-92 lettered 2N over 3906, with the Motorola batwing and 415 on the bottom line; the flat face carries all of it, and no other face is shown in these photos. 415 is the code string on this holding and it is reproduced here as found - the data we work from publishes no decode for Motorola-era stamped codes, so nobody should read a week or a year out of those three digits, ourselves included. The leads run straight down from the body at full length, close-spaced where they leave the plastic and untrimmed at the ends, photographing a light grey against the clear crinkled wrap.
Key Features
- Polarity: PNP silicon amplifier and switch
- VCEO: -40 V; VCBO -40 V; VEBO -5 V (per onsemi's published 2N3906 data)
- IC: -200 mA continuous (per onsemi)
- PD: 625 mW at TA = 25 degC (per onsemi)
- hFE: 100 to 300 at IC = 10 mA (per onsemi)
- fT: 250 MHz minimum (per onsemi)
- Package: TO-92 plastic (TO-226AA), three through-hole leads
- Complement: 2N3904, the NPN half of the pair (per onsemi)
- Body marking on the unit photographed: 2N, 3906, Motorola batwing, 415
- No lead assignment is quoted here; the data we work from does not publish one, so confirm the pinout against onsemi's published 2N3906 data before you solder
- Verify against onsemi's published 2N3906 data before designing in.
Applications
- Low current PNP switch driven from a logic output
- Emitter follower and small signal buffer stages
- Level shifting on analog and mixed signal boards
- Legacy board repair and kit building on TO-92 pads
Frequently Asked Questions
How many should I order?
Order the count the build needs. 20 are here on this shelf, sold one at a time and not as a pack, so a repair and its spares belong on a single order rather than split across two. Shipping is $8 flat rate and free on orders over $28, so small parts like this ship smartest as part of a larger order.
Is there a gain group on this part, and does the 415 tell me anything about it?
No on both counts. The 2N3906 ships as a single gain grade - onsemi's published data gives hFE 100 to 300 at IC = 10 mA, with no A, B or C bin suffix in the part number and none visible on the body of the unit photographed. The 415 on the bottom line beside the batwing is a factory code string, and no published Motorola or onsemi document behind this page maps those digits to a gain group, a plant or a date, so it is printed here and left alone. If your circuit needs a known beta rather than a range, sort them on a meter after they arrive; at these quantities that is a ten minute job.
Twenty on the shelf, the photographed one reading 2N 3906 over a batwing, ready to sit under the emitter resistor and be forgotten again.
