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A733 is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists Lumimax Optoelectronic Technology. Its product description is TRANS PNP 50V 0.1A TO-92. Review the specifications below when checking this part for your BOM.
The A733 is a PNP epitaxial planar transistor housed in a TO-92 plastic-encapsulated package. It features a collector-emitter voltage of -50 V and a continuous collector current rating of -100 mA, with a maximum power dissipation of 250 mW at 25°C. The device offers a DC current gain (hFE) ranging from 90 to 600 depending on the classification rank, and a transition frequency of 100 MHz. It operates within a junction temperature range of -55°C to +150°C.
Verify the specific hFE classification rank required for your design, as performance varies across R, Q, P, and K grades. Confirm the TO-92 package orientation and pinout compatibility with your PCB layout. Ensure thermal management supports the 250 mW dissipation limit at expected ambient temperatures. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.
Select the A733 when a PNP transistor with moderate current handling and high gain is needed. Compare hFE requirements against the available classification ranks to ensure sufficient gain margin. Consider the TO-92 package size constraints and thermal resistance characteristics. Evaluate the 100 MHz transition frequency against your signal bandwidth needs to avoid performance degradation.
The A733 belongs to the family of small-signal PNP transistors designed for general-purpose electronic applications. It serves as a complement to NPN counterparts in push-pull configurations. The TO-92 package provides a cost-effective solution for through-hole mounting in consumer and industrial electronics where space is not severely constrained.
Public confirmed substitute part numbers are not provided in the source material.
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