Relay Control with GPIO

I need a logic-level N-channel MOSFET to drive the relay. @library find one in SOT-23 footprint for ≥100 mA coil current.

246 days

flux

2:03

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Creating search plan for: "N-channel logic-level MOSFET SOT-23 100mA"

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Found 65 results.

Searching: "N-channel logic-level MOSFET SOT-23 100mA"

Finished searching for a component.

Here are three SOT-23 logic-level N-channel MOSFETs that can comfortably switch a ≥100 mA relay coil:

Table

Part	VDS	ID (Cont.)	RDS(on) @ VGS	VGS(th)	Pd	Datasheet
BSS123	100 V	200 mA	7 Ω @ VGS=3 V	1–3 V	350 mW	PDF
2N7002	60 V	200 mA	5 Ω @ VGS=4.5 V	0.8–3 V	200 mW	PDF
BSS138LT3G	50 V	200 mA	3.5 Ω @ VGS=2.5 V	0.5–1.5 V	225 mW	PDF

Recommendation:

BSS138LT3G offers the lowest RDS(on) at 2.5 V, making it the best choice for 3.3 V GPIO drive.

Which one would you like to add to your design?

Select BSS138LT3G

Select 2N7002

Add BSS123

Check gate charge

246 days

Ready.

Reviews

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ESP32 power meter 4 ways

Controls

Properties

License

https://creativecommons.org/licenses/by/4.0/

Availability & Pricing

Distributor		Qty 1
	Arrow	$8.02–$15.33
	Digi-Key	$17.28–$28.45
	LCSC	$15.63–$15.74
	Mouser	$20.71
	Verical	$13.37–$19.30

Assets

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vasy_skral / ESP32 power meter 4 ways

Schematic