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BZV55C39 L1G

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Taiwan Semiconductor Zener Diodes, MiniMELF. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BZV55C39 L1G

Taiwan Semiconductor · Zener Diodes · MiniMELF

BZV55C39 L1G from Taiwan Semiconductor, in a MiniMELF. 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, marked by the cathode band; the Zener (BZV55C39 VZ 37-41V at IZT 2.5mA) regulates when this terminal is reverse-biased positive relative to the anode.
2 A passive Anode terminal of the single-die Zener diode; forward voltage VF is 1V at IF=10mA.

Key specifications

Parameter Value
Manufacturer Taiwan Semiconductor
Package MiniMELF
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 VZ 37 39 41 V IZT = 2.5 mA, TA = 25°C 2
Zener voltage tolerance -5 5 % standard tolerance on nominal zener voltage 3
Test current IZT 2.5 mA TA = 25°C 2
Dynamic impedance ZZT 90 Ω @ IZT = 2.5 mA 2
Knee impedance ZZK 500 Ω @ IZK = 0.5 mA 2
Knee test current IZK 0.5 mA 2
Reverse leakage current IR 0.1 µA VR = 28 V 2
Forward voltage VF 1 V IF = 10 mA, TA = 25°C 1
Power dissipation PD 500 mW TA = 25°C 1
Junction temperature range TJ -65 175 °C 1
Storage temperature range TSTG -65 175 °C 1
Junction-to-ambient thermal resistance RӨJA 300 °C/W 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin ● Terminal: Matte tin plated leads, solderable per J-STD-002 ● Polarity: Indicated by cathode band 1

CAD (KiCad official)

  • Symbol: BZV55C39 L1G
  • Footprint: Diode_SMD:D_MiniMELF
  • 3D model: MiniMELF (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Taiwan Semiconductor datasheet (6 pp, sha256 e108fdeec0e282cf, retrieved 2026-10-27, 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