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BZX55C30PF-M

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ST Semtech Zener Diodes, DO-35. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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BZX55C30PF-M

ST Semtech · Zener Diodes · DO-35

BZX55C30PF-M from ST Semtech, in a DO-35. 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer ST Semtech
Package DO-35
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 (VZT) min VZT 28 V at IZT = 5 mA; tested with pulses tp = 20 ms 2
Zener voltage (VZT) max VZT 32 V at IZT = 5 mA; tested with pulses tp = 20 ms 2
Zener impedance (ZZT) max ZZT 80 Ω at IZT = 5 mA 2
Zener impedance (ZZK) max ZZK 220 Ω at IZK = 1 mA 2
Reverse current (IR) max IR 0.1 µA at VR = 22 V 2
Forward voltage (VF) max VF 1 V at IF = 100 mA 2
Power dissipation (Ptot) max Ptot 500 mW Ta = 25℃ 1
Junction temperature (Tj) max Tj 175 ℃ 1
Storage temperature range (Tstg) Tstg -55 175 ℃ 1
Thermal resistance junction to ambient (RθJA) max RθJA 300 ℃/W leads kept at ambient temperature at a distance of 8 mm from case 1
Nominal Zener voltage (VZnom) VZnom 30 V 2

CAD (KiCad official)

  • Symbol: BZX55C30PF-M
  • Footprint: Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal
  • 3D model: DO-35 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: ST Semtech datasheet (3 pp, sha256 4ec65c9ef297324e, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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