C3974 transistor equivalent, silicon npn transistor.
(0.7) 15.0±0.3 11.0±0.2 Unit: mm 5.0±0.2 (3.2) 21.0±0.5 15.0±0.2 * High-speed switching * High collector-base voltage (Emitter open) VCBO φ 3.2±0.1 * W.
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