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BAL74

Public Made by Adom

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Nexperia Diodes - General Purpose, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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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