Dual PNP pre-biased transistor in a small SM6 package
The Toshiba RN2610(TE85L,F) is a dual PNP pre-biased transistor in an SC-74 (SOT-457) surface-mount package, designated SM6. Each transistor integrates two bias resistors — a 4.7 kΩ base resistor (R1) — eliminating the need for external biasing components in common switching and interface circuits. The 200MHz transition frequency supports medium-speed switching up into the low-MHz range. Maximum power dissipation is 300mW, which sets the thermal budget for the SM6 package — derate accordingly if both transistors are conducting simultaneously near the current limit.