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BSS84 P-Channel MOSFET
Public Unreviewedby Ray
-50 V P-channel enhancement MOSFET in SOT-23 for high-side switching and level shifting.
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markdownBSS84
Diodes Incorporated · MOSFET · SOT-23
The BSS84 is a P-channel enhancement-mode MOSFET rated for -50 V and about -130 mA in a SOT-23 package. It is used for high-side load switching, reverse-polarity protection, and level shifting, and is the P-channel complement of the N-channel BSS138.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | G | input | Gate. Enhancement-mode P-channel control terminal. VGS(TH) between -0.8V and -2.0V; drive to -5V or more negative (up to ±20V max VGSS) to fully enhance the channel. |
| 2 | S | passive | Source. Reference terminal for VGS. Body diode anode connects internally to source (P-channel body diode from drain to source). |
| 3 | D | passive | Drain. Switched terminal. -50V max VDSS; -130mA continuous ID, -1.2A pulsed IDM. RDS(ON) typ 3.2Ω / 10Ω max at VGS=-5V, ID=-100mA. |
Key specifications
| Parameter | Value |
|---|---|
| Type | P-channel enhancement MOSFET |
| Drain-source voltage (VDS) | -50 V |
| Continuous drain current (ID) | -130 mA |
| On-resistance (RDS(on)) | 10 ohm max at VGS = -10 V |
| Gate threshold voltage | -0.8 V to -3 V |
| Power dissipation | 360 mW |
| Operating temperature | -55 C to 150 C |
Ordering variants
BSS84-7-FBSS84-13-F
CAD (KiCad official)
- Symbol:
bss84.kicad_sym - Footprint:
bss84.kicad_mod - 3D model: SOT-23 body from KiCad
Package_TO_SOT_SMD/SOT-23.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (6 pp, sha256
a4e89efffb9e0283, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).