Nat Semi BC172C Silicon Planar Epitaxial NPN Transistor TO-106 Package OM0122C

Nat Semi BC172C Silicon Planar Epitaxial NPN Transistor TO-106 Package OM0122C

£6.00

30 in stock

SKU: OM0122C Category:

Description

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5 Pieces

Nat Semi – National Semiconductor

These are very early Nat Semi parts date coded 7224, the BC172C is a silicon planar epitaxial NPN transistor typically used in low-power audio amplifier and general-purpose switching applications. Housed in a plastic TO-106 package, the ‘C’ rank indicates a high forward current transfer ratio (\(h_{FE}\)).

The TO-106 is a vintage through-hole transistor package featuring a moulded circular black epoxy resin body with a domed top and gold-plated leads, developed in the early 1960s. It is often nicknamed the “teddy bear eye” package and was used for small-signal silicon transistors. 
Package Features
  • Design: Circular domed shape with flat base.
  • Leads: 3 gold-plated triangle-configured leads.
  • Material: Plastic, or resin encapsulation.
  • Common Use: Vintage small-signal NPN and PNP bipolar junction transistors (e.g., early BC-series parts).
Later versions of the BC172 were manufactured in the TO-92 package, these are are in the earlier TO-106 “unibody” plastic package used by manufacturers like MicroElectronics and Fairchild in the late 1960s and 1970s
You can compare the specifications of the various National Semiconductor BC172 types eg. BC172, BC172A, BC172B and this BC172C via…
Datasheet Global 
Technical Specifications
  • Type: NPN silicon transistor
  • Package: TO-106
  • Collector-Emitter Voltage (\(V_{CEO}\)): 25 V
  • Collector-Base Voltage (\(V_{CBO}\)): 25 V
  • Max Collector Current (\(I_{C}\)): 0.1 A (100 mA)
  • Collector Power Dissipation (\(P_{c}\)): 0.3 W
  • Gain Group (C): High \(h_{FE}\) classification (typically 100–450 range)
Applications & Usage
  • Small-signal audio frequency stages
  • Low-noise audio preamplifiers
  • General driver stages and low-current DC switching

For datasheet search…”early National semiconductor BC172C”

Or go directly to…

https://pdf.datasheet.global/c3d3c7c4/national.com/BC172C.pdf

PLEASE NOTE!

These parts came to us as part of a lot of surplus stock from a large distribution Co. and have been kept in storage for a time, they are however pristine, and, as with all our products they come with a full guarantee. 

If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.

Additional information

Brand

MPN

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