For sale is a massive bulk lot of 150 vintage Toshiba 2SA52 Germanium PNP transistors. These are authentic “Top-Hat” style metal can transistors, highly sought after by vintage electronics enthusiasts and boutique guitar pedal builders. The 2SA52 is a classic Japanese germanium transistor known for its unique gain characteristics and “warm” vintage leakage profiles. Common Uses & Applications. Boutique Guitar Pedals: A favorite for Fuzz Face clones, Tone Benders, and various “low-gain” germanium fuzz or boost circuits. They offer the distinct soft-clipping texture that modern silicon transistors cannot replicate. Vintage Radio Restoration: Specifically designed for the IF (Intermediate Frequency) amplifier stages of classic 1960s and 70s transistor radios. Audio Preamps: Used in specialized DIY audio projects looking for that specific “lo-fi” or vintage germanium warmth. Educational & Experimental: Excellent for students and hobbyists to study the properties of germanium semiconductors compared to modern silicon. Type: PNP Germanium Transistor. Package: TO-1 / Metal Can (“Top-Hat”). Germanium Characteristics: Like all vintage germanium parts, these exhibit natural leakage and are temperature-sensitive. This is often considered a “feature” by musicians for the organic sound it creates in effects pedals. Polarity: This is a PNP transistor. Ensure your circuit is designed for positive ground or adjusted accordingly.