Dual pre-biased pair in a single SMT6 package
The Rohm Semiconductor IMD2AT108 packs one NPN and one PNP pre-biased transistor into a single SC-74 (SOT-457) surface-mount package, designated SMT6. Both the base resistor (R1) and the emitter-base resistor (R2) are 22 kOhms, giving a matched switching threshold across the complementary pair.
Transition frequency and saturation
A transition frequency of 250 MHz means the IMD2AT108 can handle switching up into the low-VHF range, adequate for most digital interface translation and oscillator circuits. The Vce saturation is specified at 300 mV maximum with a 500 µA base drive and 10 mA collector current, which keeps the on-state voltage drop low enough for 3.3 V logic rails. Minimum DC current gain is 56 at 5 mA collector current and 5 V Vce.
Active product status
This is a current-production part, ROHS3 compliant, available through independent distribution.