Product Overview
National Semiconductor MPSA06 NPN Transistor in TO-92, 80V and 500mA, New Unused Stock Sold Each
Condition
New, unused stock. The photographed piece is a black plastic TO-92 with three straight, uncut leads that are bright and free of solder, kinks or oxidation. The flat face is printed in three lines: the National Semiconductor script N logo followed by 718, then MPS, then A06. The rounded back carries a small white oval printed with a single character that reads as a 0 or an O; what it denotes is not established here. Five pieces are in stock and each is sold on its own, so the photographs show one representative piece rather than the whole group; date codes on the remaining stock are not guaranteed to match.
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Product Overview
The MPSA06 is an NPN bipolar junction transistor in the three-lead TO-92 plastic package, rated in this listing at 80V and 500mA with 625 mW of dissipation and a maximum gain value of 100. That combination puts it in the medium power, higher voltage corner of small signal switching and amplification: enough headroom for a relay coil, a lamp driver or a level shifter running off a rail that a 40V part would not survive. These are National Semiconductor pieces, printed MPS A06 across two lines under the script N logo with a 718 date code, from a maker that has since been absorbed and no longer stamps that logo on anything. The part type itself is an industry-standard designation, so a board calling for an MPSA06 from any source is asking for this device.
Key Features
- Device: NPN bipolar junction transistor (BJT)
- Collector-emitter voltage: 80V
- Collector current: 500mA
- Power dissipation: 625 mW
- Maximum gain value: 100
- Package: TO-92, three leads, straight and uncut on the piece shown
- Markings on the photographed piece: National script N logo, 718, MPS A06
- Brand: National Semiconductor
- Condition: New, unused, sold each
Applications
- Bench technician repairing a 1970s or 1980s control board that calls out an MPSA06 by name and wants the original manufacturer's part rather than a modern substitute
- Audio hobbyist building a discrete preamp or tone stage that needs an NPN with real voltage headroom above a 48V rail
- Instrument builder driving a small relay coil, a lamp or a solenoid from logic level, where 500mA and 80V cover the load with margin
- Student or prototyper stocking a breadboard drawer with a few higher-voltage NPN devices instead of a bag of 100 of one type
Frequently Asked Questions
What exactly is printed on the transistor I will receive?
The piece in these photographs reads, top line, the National Semiconductor script N logo followed by 718, then MPS on the second line and A06 on the third, with a small white oval on the rounded rear face carrying one character that reads as a 0 or an O. Each transistor is sold on its own out of a group of five, so treat those markings as representative. We do not promise that every piece in stock carries the identical date code.
Which electrical limits are confirmed here?
80V, 500mA, 625 mW dissipation and a maximum gain value of 100 are the figures this listing carries. Anything beyond those numbers, including saturation voltage, transition frequency and the gain grouping at your particular collector current, is not confirmed here. Check the MPSA06 datasheet against your operating point before you commit the design.
Can you tell me the pin order?
Not from a photograph, and we will not state a pinout we have not verified. TO-92 lead assignments are printed in the datasheet for this device family, so identify emitter, base and collector against that document, or check with a meter on the bench, before you wire the part into a board.
I only need two or three of these, not a bag of a hundred. Can I buy that few?
That is exactly how this is sold. Pick the count you actually need, whether that is one piece to finish a repair or a few spares for the drawer, instead of paying for a forced lot of 50 or 100 that will sit in a bin for a decade. Every piece is the same photographed, individually described part from a named manufacturer, not an unmarked bulk-bag transistor of uncertain origin. Shipping is $8 flat rate and free once the order passes $28, and orders leave our Idaho warehouse the same or next business day.
That script N is a signature from a company that no longer exists, printed on a part still perfectly willing to do the same 80 volt job it was made for in the first place. Give it a board that needs it and it will get right back to work.
