A small N-channel logic-level MOSFET in TO-92, the through-hole classic for switching small loads from logic. Its gate threshold is low enough (around 2 V) to turn on from 5 V logic, and it handles 60 V drain-source and about 200 mA, so it drives LEDs, relays, small solenoids, and gate signals, or level-shifts a line. It is the through-hole cousin of the surface-mount 2N7002 and BSS138. The TO-92 leads are S, G, D (pin 1 = source).

Pinout

Pin	Name	Type	Function
1	S	passive	Source terminal. Common reference for gate-source voltage; internally tied to the MOSFET body (integral body diode cathode at drain).
2	G	input	Gate terminal. Voltage-controlled input; VGS(th) = 0.8 to 3 V (ID = 1 mA). Continuous VGS rating ±20 V (±40 V non-repetitive).
3	D	passive	Drain terminal of the N-channel enhancement mode MOSFET. Rated 60 V VDSS with 200 mA continuous / 500 mA pulsed drain current. Body diode anode is internal to source.

Key specifications

Parameter	Value
Type	N-channel MOSFET (logic-level)
Drain-source (VDS)	60 V
Gate threshold (Vgs(th))	0.8-3 V
Continuous drain current	200 mA
RDS(on)	~5 Ω at VGS=10 V
Pinout	S-G-D (pin 1 = source)
Common use	logic-driven switching
Package	TO-92

Ordering variants

2N7000BU (TO-92)
2N7000TA (TO-92, ammo pack)

CAD (KiCad official)

Symbol: Transistor_FET:2N7000
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92 (KiCad packages3D)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: onsemi datasheet (7 pp, sha256 0fa86dae10140c9d, 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).

Datasheet PDF