Transistor BF185 NPN, RF Silicon TO-72

Transistor BF185 NPN, RF Silicon TO-72

Transistor BF185 NPN, RF Silicon TO-72

Transistor BF185 NPN, RF Silicon TO-72

Transistor BF185 NPN, RF Silicon TO-72

Transistors

Reference: TRBF185

Part.No: BF185

€1.40

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The BF185 is an NPN silicon RF transistor in a TO-72 package with 4 leads, optimized for radio frequency and intermediate frequency amplification stages. Ideal for restoring vintage receivers and building low-noise RF circuits.

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Description
Product Details

BF185 NPN RF Transistor - Low Noise Amplification for Radio & IF Stages

The BF185 is a specialized NPN silicon transistor designed for radio frequency and intermediate frequency applications. Its shielded TO-72 package with dedicated ground lead provides excellent electromagnetic isolation, making it a trusted choice for vintage receiver restoration and modern low-noise RF preamplifiers.

Functions & Applications

Shielded TO-72 Package: 4-lead design with dedicated ground lead for superior electromagnetic isolation and reduced noise.
Low Noise Performance: Optimized for RF and IF amplification stages in radio receivers and measurement instruments.
Wide Frequency Response: Excellent performance across AM, FM, and higher frequency bands.
Vintage-Friendly: Essential component for restoring 1970s and 1980s radio receivers.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-72
Package Type	TO-72 (4-Lead Shielded)
Mounting Type	Through-Hole (THT)
Application	RF/IF Amplification, Radio Receivers

Frequently Asked Questions

Q: Can the BF185 be used in AM and FM radio receivers?
A: Yes, the BF185 has excellent frequency response far exceeding the requirements of both AM (530–1700 kHz) and FM (88–108 MHz) bands, making it ideal for either application.

Q: Why does the BF185 have 4 leads instead of 3?
A: The 4th lead is a shielded ground connection that minimizes electromagnetic interference and reduces noise in sensitive RF circuits. This makes it superior to standard 3-lead transistors for RF applications.

Notes

Vintage RF transistor; excellent for restoring 1960s-1980s radio receivers. Ensure proper grounding of the shielded lead for optimal low-noise performance.

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-72

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