Transistor BC117

Transistor BC117 NPN, 0.05A TO-106

Transistors

Reference: TRBC117

Part.No: BC117

€0.80

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The BC117 is a small-signal NPN Bipolar Junction Transistor (BJT) in a TO-106 metal-can package. A legacy high-voltage member of the BC107 family, it is used for low-power amplification and switching stages requiring higher breakdown voltage.

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Description
Product Details

BC117 High-Voltage Small Signal Transistor - Legacy TO-106 Metal Can

The BC117 is a silicon NPN small-signal transistor housed in the TO-106 metal-can package, distinguished from other members of the BC107 family by its notably higher voltage rating. It was widely used in vintage audio, radio and general-purpose analog circuits where a compact metal-can transistor with extra voltage headroom was needed, and remains useful today for repair work and classic circuit builds.

Functions & Applications

High Voltage Rating: Vceo/Vcbo up to 120V, well above typical small-signal transistors of similar size.
Metal-Can TO-106 Package: Compact through-hole construction with good heat handling for its class.
Reliable hFE: Minimum current gain of around 30, sufficient for general-purpose amplification and switching.
Legacy Compatibility: Ideal for repairing or restoring vintage audio, radio and instrumentation circuits designed around the BC107/BC117/BC147 family.
Decent Switching Speed: Transition frequency around 60MHz supports basic RF and pulse switching tasks.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-106
Collector-Emitter Voltage (Vceo)	120V
Collector-Base Voltage (Vcbo)	120V
Max Collector Current (Ic)	50mA
Power Dissipation (Pd)	300mW
DC Current Gain (hFE min)	30
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What makes the BC117 different from common small-signal transistors like the BC547?
A: The BC117 offers a much higher voltage rating, with Vceo and Vcbo both up to 120V, compared to around 45V for typical BC547-style transistors, at the cost of a lower maximum current of about 50mA.

Q: What package does the BC117 come in?
A: It is supplied in the TO-106 metal-can package, a compact through-hole format used on many classic European small-signal transistors from this era.

Notes

The BC117 is a legacy/vintage part, mainly stocked for repair and restoration of classic audio, radio and instrumentation equipment rather than new designs.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-106

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