2SB772T H72P PNP Transistor - Small Saturation Voltage High Linearity

2SB772T H72P PNP Transistor – SOT-89 Small Saturation Voltage, High Linearity

The 2SB772T H72P is a general-purpose PNP silicon transistor housed in a compact SOT-89 surface-mount package. Its core strengths — low VCE saturation, excellent linearity and high hFE current gain — make it a go-to replacement in 3-watt audio amplifier output stages, linear voltage regulators, small DC/DC converters, relay drivers and a wide range of analog circuits. It is also frequently used as a repair part inside ASIC miner power supplies where small-signal PNP transistors drive the gate-control or housekeeping rails.

2SB772T H72P Technical Specifications

Typical Use Cases

The 2SB772T is specified into: 3 W class-AB audio output stages paired with NPN complements, low-noise LDO pass transistors, small relay drivers on control boards, housekeeping rails inside switched-mode PSUs, and bias networks in op-amp output stages. Inside ASIC miner PSUs it often shows up in standby / housekeeping circuitry feeding the main controller — when it fails the unit may not power up even though the main rails appear healthy.

How to Identify a Failed 2SB772T

Typical fault modes: collector-emitter short (reads ~0 Ω on diode test), open base-emitter junction, cracked SOT-89 package from overheat, or visible discolouration. Before swapping, check drive signals at the base and confirm the rail it is feeding. Matched replacements preserve the original linearity and saturation behaviour, which is important in analog paths where gain matters.

Related PNP / Small-Signal Transistors

• 2SB772 SMD Power Transistor – SOT-89 Avalon PSU
• PBSS5240T-ZFW PNP Transistor – Innosilicon G1286 PSU
• DSS5540X ZPS54 PNP BJT – Antminer S9 / L3 Hashboard
• BCX53 PNP AF Transistor – Whatsminer P21 PSU

Rebuild analog and PSU stages with a reliable 2SB772T H72P. Order online or contact us at contact@lys-sz.com for tray-quantity pricing. Worldwide shipping from our Shenzhen warehouse.