View umt2222a datasheet:

UMT2222A / SST2222A / MMST2222A / PN2222A Transistors NPN Medium Power Transistor (Switching) UMT2222A / SST2222A / MMST2222A / PN2222A Features External dimensions (Units : mm) 1) BVCEO > 40V (IC=10mA) 2.0±0.2 UMT2222A 1.3±0.1 0.9±0.1 0.65 0.65 2) Complements the UMT2907A / SST2907A 0.2 0.7±0.1 (1) (2) / MMST2907A / PN2907A. 0 ? 0.1 (1) Emitter (3) (2) Base ROHM : UMT3 0.3+0.1 0.15±0.05 -0 EIAJ : SC-70 (3) Collector All terminals have same dimensions 2.9±0.2 Package, marking, and packaging specifications 0.95+0.2 SST2222A -0.1 1.9±0.2 0.45±0.1 0.95 0.95 Part No. UMT2222A SST2222A MMST2222A PN2222A (1) (2) Packaging type UMT3 SST3 SMT3 TO-92 0 ? 0.1 Marking R1P R1P R1P - 0.2Min. (1) Emitter (3) Code T106 T116 T146 T93 (2) Base +0.1 Basic ordering