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Contents

README

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BZX85B56

LGE · Zener Diodes · DO-41

BZX85B56 from LGE, in a DO-41. 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 K passive Cathode end of the zener diode, marked by the color band; positive with respect to the anode in zener (reverse) operation, with nominal VZ 56 V at IZT 4.0 mA.
2 A passive Anode end of the axial-lead zener diode, opposite the color band; maximum forward voltage 1.2 V at IF = 200 mA.

Key specifications

Parameter Value
Manufacturer LGE
Package DO-41
Category Diodes
Pins 2

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Zener Voltage tolerance VZ -2 2 % standard tolerance on nominal zener voltage 2
Nominal Zener Voltage VZ 56 V @ IZT = 4.0 mA 2
Maximum Zener Impedance ZZT 120 Ω @ IZT = 4.0 mA 2
Maximum Zener Impedance (knee) ZZK 2000 Ω @ IZK = 0.25 mA 2
Maximum Reverse Leakage Current IR 0.5 µA @ VR = 43 V 2
Maximum DC Zener Current IZM 19 mA 2
DC Power Dissipation PD 1.3 W TL = 50 °C (Note 1) 1
Maximum Forward Voltage VF 1.2 V IF = 200 mA 1
Thermal Resistance Junction to Ambient RӨJA 130 K / W leads kept at ambient temperature at 10 mm from case (Note 2) 1
Junction Temperature Range TJ -65 200 °C 1
Storage Temperature Range TSTG -65 200 °C 1

CAD (KiCad official)

  • Symbol: BZX85B56
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: LGE datasheet (2 pp, sha256 6beeafb075ee9704, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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