10 Pieces Silicon Transistor Pair D 1047 and B 817 200 V 12 A Overview , , or build power stages with a matched set of silicon transistors D 1047 and B 817. Each pack contains 10 transistor pairs that support voltage and current applications where reliable switching and amplification are required. Key benefits voltage and current handling: rated to 200 V and 12 A, suitable for demanding power circuits. Matched pair format: includes complementary models D 1047 and B 817 to simplify pushpull amplifier and driver designs. Ready for repairs and small production runs: ten pieces per pack reduce downtime and ensure consistent replacements. Solid material and construction: silicon transistor devices designed for stable electrical performance in power applications. Easy integration: works as direct replacements in circuits that specify D 1047 and B 817 models. What this product solves Restores functionality in power amplifiers, motor drivers, and power supplies by replacing worn or failed transistors. Simplifies prototype and workflows by providing matched complementary transistors in one convenient pack. Eliminates the need to source individual components from multiple suppliers. Important attributes Function: power switching and amplification for medium to power circuits. Models included: D 1047 and B 817. Rating: 200 V maximum voltage, 12 A maximum current. Quantity: 10 pieces per pack. Material: silicon transistor construction for predictable electrical characteristics. Practical applications Audio power amplifiers: use D 1047 and B 817 pairs in output stages for pushpull configurations and repairs. Power supply and regulator circuits: suitable for voltage regulator stages and backup replacements in power modules. Motor control and driver circuits: apply in hobby or industrial motor drivers where 200 V and 12 A capability is required. Technical reminder Use these transistors as direct replacements only when the original circuit specifies D 1047 and B 817 or equivalent electrical ratings. Verify pinout and thermal mounting requirements before final installation to ensure reliable operation.