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1N5252BPF

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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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1N5252BPF

ST Semtech · Zener Diodes · DO-35

1N5252BPF 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, nominal VZnom 24 V) VZT 22.8 24 25.2 V lZT = 5.2 mA 2
Zener voltage tolerance (suffix B) -5 5 % suffix B = ±5% tolerance 1
Dynamic resistance (ZZT) ZZT 33 Ω lZT = 5.2 mA (lZT column of the same row) 2
Dynamic resistance (ZZK) ZZK 600 Ω IZK = 0.25 mA 2
Reverse current (IR) IR 0.1 µA VR = 18 V 2
Forward voltage (VF) VF 1.1 V IF = 200 mA 1
Temperature coefficient of Zener voltage (TKVZ) TKVZ 0.088 %/K 2
Power dissipation (Ptot) Ptot 500 mW Ta = 25℃ 1
Junction temperature (Tj) Tj 175 ℃ 1
Storage temperature range (Tstg) Tstg -65 175 ℃ 1
Thermal resistance junction to ambient (RθJA) RθJA 300 ℃/W leads kept at ambient temperature at a distance of 8 mm from case 1

CAD (KiCad official)

  • Symbol: 1N5252BPF
  • 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 ef97e3baf80e09cf, retrieved 2026-10-15, 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