component

BZB784-C3V3

Public Made by Adom

by adom

Nexperia Zener Diodes, SOT-323(SC-70). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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BZB784-C3V3

Nexperia · Zener Diodes · SOT-323(SC-70)

BZB784-C3V3 from Nexperia, in a SOT-323(SC-70). 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 cathode passive Cathode of one of the two voltage regulator diodes; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA.
2 cathode passive Cathode of the second voltage regulator diode; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA.
3 common anode passive Common anode shared by both diodes; total power dissipation is limited to max. 350 mW at Tamb = 25 °C with two diodes loaded.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-323(SC-70)
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
Continuous forward current IF 200 mA 3
Non-repetitive peak reverse current (BZB784-C3V3, Table 1) IZSM 6 A tp = 100 μs; square wave; Tamb = 25 °C; prior to surge 5
Total power dissipation, 2 diodes loaded Ptot 350 mW Tamb = 25 °C; 2 diodes loaded; note 1 3
Total power dissipation, 1 diode loaded Ptot 180 mW Tamb = 25 °C; 1 diode loaded 3
Non-repetitive peak reverse dissipation PZSM 40 W tp = 100 μs; square wave; Tamb = 25 °C; prior to surge 3
Storage temperature Tstg -65 150 °C 3
Junction temperature Tj 150 °C 3
Thermal resistance junction to soldering point, 2 diodes loaded Rth j-s 140 K/W 2 diodes loaded; note 1 4
Thermal resistance junction to soldering point, 1 diode loaded Rth j-s 265 K/W 1 diode loaded; note 1 4
Thermal resistance junction to ambient, 2 diodes loaded Rth j-a 355 K/W 2 diodes loaded; note 2 4
Thermal resistance junction to ambient, 1 diode loaded Rth j-a 680 K/W 1 diode loaded; note 2 4
Forward voltage VF 0.9 V IF = 10 mA; see Fig.2 4
Reverse current (BZB784-C3V3) IR 5 μA VR = 1 V 4
Working voltage (BZB784-C3V3) VZ 3.1 3.5 V at IZ = 5 mA 5
Working voltage tolerance (approx. 5%) Tol. -5 5 % approx.; printed as ≈5% in Table 1 5
Differential resistance at IZ = 1 mA rdif 350 600 Ω at IZ = 1 mA 5
Differential resistance at IZ = 5 mA rdif 85 95 Ω at IZ = 5 mA 5
Diode capacitance Cd 450 pF at f = 1 MHz; VR = 0 V 5
Temperature coefficient of working voltage SZ -1.8 mV/K at IZtest = 5 mA (see Figs 3 and 4) 5

CAD (KiCad official)

  • Symbol: BZB784-C3V3
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
  • 3D model files: bzb784-c3v3-etched.step / bzb784-c3v3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzb784-c3v3.step / bzb784-c3v3.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (9 pp, sha256 3f7233f6a26109d3, retrieved 2026-10-20, tier: lcsc)
  • 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