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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

BAL74

Nexperia · Diodes - General Purpose · SOT-23

BAL74 from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	n.c.	unconnected	Not connected; the datasheet lists this pin as having no connection to the diode.
2	anode	passive	Anode of the high-speed diode; device limits include continuous reverse voltage max. 50 V and continuous forward current max. 215 mA.
3	cathode	passive	Cathode of the high-speed diode; forward current flows from anode (pin 2) to cathode (pin 3), with repetitive peak forward current max. 500 mA.

Key specifications

Parameter	Value
Manufacturer	Nexperia
Package	SOT-23
Category	Diodes
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Repetitive peak reverse voltage	VRRM			50	V		4
Continuous reverse voltage	VR			50	V		4
Continuous forward current	IF			215	mA	see Fig.2; note 1	4
Repetitive peak forward current	IFRM			500	mA		4
Non-repetitive peak forward current	IFSM			4	A	square wave; Tj = 25 °C prior to surge; tp = 1 µs; see Fig.4	4
Non-repetitive peak forward current	IFSM			1	A	square wave; Tj = 25 °C prior to surge; tp = 1 ms; see Fig.4	4
Non-repetitive peak forward current	IFSM			0.5	A	square wave; Tj = 25 °C prior to surge; tp = 1 s; see Fig.4	4
Total power dissipation	Ptot			250	mW	Tamb = 25 °C; note 1	4
Storage temperature	Tstg	-65		150	°C		4
Junction temperature	Tj			150	°C		4
Forward voltage	VF			715	mV	see Fig.3; IF = 1 mA	4
Forward voltage	VF			855	mV	see Fig.3; IF = 10 mA	4
Forward voltage	VF			1	V	see Fig.3; IF = 50 mA	4
Forward voltage	VF			1.25	V	see Fig.3; IF = 150 mA	4
Reverse current	IR			0.1	µA	see Fig.5; VR = 50 V	4
Reverse current	IR			100	µA	see Fig.5; VR = 50 V; Tj = 150 °C	4
Diode capacitance	Cd			2	pF	f = 1 MHz; VR = 0; see Fig.6	4
Reverse recovery time	trr			4	ns	when switched from IF = 10 mA to IR = 10 mA; RL = 100 Ω; measured at IR = 1 mA; see Fig.7	4
Forward recovery voltage	Vfr			1.75	V	when switched from IF = 10 mA; tr = 20 ns; see Fig.8	4
Thermal resistance from junction to tie-point	Rth(j-tp)		330		K/W		4
Thermal resistance from junction to ambient	Rth(j-a)		500		K/W	note 1 (device mounted on an FR4 printed-circuit board)	4

CAD (KiCad official)

Symbol: BAL74
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)
3D model files: bal74-etched.step / bal74-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bal74.step / bal74.glb are the bare package body.

Provenance

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

Datasheet: Nexperia datasheet (10 pp, sha256 497ff874936a64bd, retrieved 2026-10-17, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF