BLY91A Philips (PH) Vintage VHF/UHF NPN Silicon Power Transistor – Gold-Plated Stripline Package

Genuine New Old Stock (NOS) BLY91A NPN Silicon Power Transistor manufactured by Philips (PH). Featuring a rugged, high-frequency stripline package configuration with premium gold-plated flat leads, this classic transistor is engineered for high-reliability RF power amplification in the VHF and UHF bands. Highly sought after for vintage radio transmitter repairs, telecom equipment restoration, and analog RF amplification setups.

Detailed Features & Specifications:

Authentic Philips BLY91A High-Frequency RF Power Transistor
Ensure maximum signal integrity and authentic component matching in your communication hardware with the BLY91A RF power transistor. Built specifically for class-A, B, or C amplifiers in professional VHF/UHF mobile radio networks and transmitters, this component delivers excellent power gain and rugged stability under mismatched load conditions.

Model / Marking: BLY91A (Featuring original Philips "PH" logo and "H0714" batch identifiers)

Transistor Polarity: NPN Silicon

Application Focus: High-frequency RF power amplification (VHF/UHF bands)

Package Type: 4-Lead Stripline / Ceramic Flange configuration with a distinctive angled orientation index on the top lead.

Premium Construction: Heavy gold-plated flat ribbon leads designed to completely eliminate oxidation, lower skin-effect resistance at high frequencies, and ensure maximum thermal dissipation.

Condition: Pristine New Old Stock (NOS), fully verified for intact leads and clean housing.