Product Overview
Motorola 2N6491 - PNP Silicon Plastic Power Transistor, 80V 15A 75W, TO-220AB
Condition
New. The photo shows a representative unit from our stock.
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Product Overview
The 2N6491 is the PNP end of the 2N6487/2N6488 NPN and 2N6490/2N6491 PNP complementary silicon plastic power family, rated 15 A and 75 W in a TO-220AB body (onsemi's published 2n6487-d data).
30 are on the shelf, sold each. The representative unit photographed reads 2N6491 across the black face with the Motorola batwing and 615 stamped below it, and a round factory stamp sits above the part number whose lettering these photos do not resolve, so we do not quote it. 615 is reproduced exactly as found and nothing more is claimed for it: no published Motorola or onsemi document behind this page decodes those digits, so it is a marking string and not a date. The tab is bare metal with the mounting hole clear, the reverse of the tab photographs a deep red-brown, and the three leads are heavy and full length, grey with a little dark residue where they leave the plastic.
Key Features
- Polarity: PNP silicon plastic power transistor
- VCEO(sus): 80 V minimum (per onsemi's published 2n6487-d data)
- IC: 15 A (per onsemi)
- PD: 75 W at TC = 25 degC (per onsemi)
- hFE: 20 to 150 at IC = 5.0 A, and 5.0 minimum at 15 A (per onsemi)
- fT: 5.0 MHz minimum (per onsemi)
- Package: TO-220AB plastic, three leads, metal tab with mounting hole; through-hole mount
- Complement: 2N6488, the 80 V NPN of the pair; the same published sheet covers 2N6487/2N6488 NPN and 2N6490/2N6491 PNP
- Body marking on the unit photographed: 2N6491, Motorola batwing, 615, under a round factory stamp these photos leave unreadable
- No pin assignment or tab connection is quoted here; the data we work from does not publish one for this package, so check onsemi's published 2n6487-d data against your board before mounting
- Verify against onsemi's published 2N6490/2N6491 series data before designing in.
Applications
- PNP output device in a complementary power amplifier
- High current series pass and linear regulator stages
- Motor, solenoid and inverter switching at 80 V and below
- Repair of legacy power boards built around the 2N6487 to 2N6491 group
Frequently Asked Questions
How many should I order?
Order the count the build needs. 30 are here, sold one at a time, so a stereo pair of output devices plus the spares that a 15 A part earns can all ride on one order instead of 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.
Will it really pass 15 amps, and what do I pair it with?
Read the gain figure before you plan around the current. onsemi's published data gives IC of 15 A and PD of 75 W at TC = 25 degC, but hFE is specified as 20 to 150 at 5.0 A and only 5.0 minimum at 15 A - at the top of the range the base current stops being a rounding error and your driver stage has to supply it. The 75 W figure is at a 25 degC case as well, which is a heatsink specification and not a promise about your chassis. For the NPN side, the published complement is the 2N6488 at the same 80 V, from the same sheet that covers 2N6487/2N6488 NPN and 2N6490/2N6491 PNP; we are not shipping one with this. What ships is the transistor by itself - no heatsink, no insulator, no mounting hardware - and no pin or tab assignment is quoted here because the data we work from does not publish one.
Fifteen amps through three leads and a bare tab you could cover with a thumbnail.
