2N527

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Classic PNP germanium alloy-junction small-signal audio transistor housed in a metal TO-5 can, widely utilized as a low-noise first-stage audio preamplifier or microphone mixer dri ver. Equivalents: 2N525, 2N526, NTE102A, AC128. Real-Life Examples: Early commercial portable public address (PA) systems, 1960s consumer electronics audio input preamps, and vintage boutique overdrive pedals. Show more