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Pi 4 B Rev 1.4 Components

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ID Official Label Type Package Value Replacement(s) Source(s) Notes
11 TVS Diode SMB 5VWM 9.2VC, Unidirectional, 5W cont. 600W pk DigiKey Raspberry Pi Forum Littelfuse SMBJ5.0A
48 Resistor (Series) 33–34Ω Self-Measured SD card CLK series resistor. Upper-left of SOC. Left pad measures ~0.8Ω to SD card slot CLK pin; right pad measures ~34Ω across component.
50 IC Power Switch P-Channel 2:1 6-WLCSP DigiKey Raspberry Pi Forum onsemi FPF1320UCX. Sits beneath the 10Ω 0201 resistor (ID 51).
51 Resistor 0201 10Ω Raspberry Pi Forum Sits above the CSP power switch (ID 50). Board reportedly boots with this resistor bridged.
61 Capacitor 44.2µF Self-Measured using LCR Meter
84 IC Power Switch P-Channel 1:1 SOT-26 DigiKey Raspberry Pi Forum Diodes Incorporated AP2552W6-7

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ID Official Label Type Package Value Replacement(s) Source(s) Notes
1 DigiKey Raspberry Pi Forum SD Card Slot
29 Mosfet SOT-523 DigiKey Raspberry Pi Forum DMG1012T

Disclaimer: Information provided "as is" with no guarantee of accuracy. Board-level repair involves risk — you accept full responsibility for any outcomes. Not professional repair advice. Full disclaimer.