Help Identifying BA5Z SR4, BA5ZSR5 and D05Z S.P4 Transistors for PCB Repair

[LOYAL WINGMAN]

Hello,
While repairing a PCB, I found that three transistors labeled BA5Z SR4, BA5Z SR5 and D05Z S.P4 are faulty. I have searched Google but couldn't find exact datasheets or part details for these codes. Could anyone help me identify what these transistors are, or suggest possible equivalents? If direct replacements aren't available, I’d appreciate recommendations for suitable substitutes.