component

ESD9BL0521P

Public Made by Adom

by adom

Leiditech ESD Protection Devices, DFN1006-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 17d ago
viewers esd9bl0521p: symbol repaired (bidirectional TVS (the page says so)) · Ray 4d ago
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esd9bl0521p-etched.step esd9bl0521p: factory component page (tier=lcsc) · Ray 17d ago
esd9bl0521p-hero.glb esd9bl0521p: hero GLB from the etched model (keeps the MPN mark) · Ray 17d ago
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esd9bl0521p.kicad_mod Publish 0.1.0 · Ray 17d ago
esd9bl0521p.kicad_sym esd9bl0521p: symbol repaired (bidirectional TVS (the page says so)) · Ray 4d ago
esd9bl0521p.lbr esd9bl0521p: symbol repaired (bidirectional TVS (the page says so)) · Ray 4d ago
esd9bl0521p.step Publish 0.1.0 · Ray 17d ago
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ESD9BL0521P

Leiditech · ESD Protection Devices · DFN1006-2

ESD9BL0521P from Leiditech, in a DFN1006-2. 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 1 passive Bi-directional TVS terminal 1 (Pin 1 of 1-line device); 5V reverse working voltage, 6.5V breakdown at 1mA, 0.3pF junction capacitance; polarity interchangeable with pin 2.
2 2 passive Bi-directional TVS terminal 2 (Pin 2 of 1-line device); 5V reverse working voltage, ±30kV IEC 61000-4-2 contact/air ESD; polarity interchangeable with pin 1.

Key specifications

Parameter Value
Manufacturer Leiditech
Package DFN1006-2
Category TVS/Fuse/Board Level Protection
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
Reverse Working Voltage VRWM 5 V 2
Breakdown Voltage VBR 6.5 V IT = 1mA 2
Reverse Leakage Current IR 0.2 µA VRWM = 5V 2
Clamping Voltage VC 9.5 12 V IPP = 1A (8 x 20 μs pulse) 2
Clamping Voltage VC 25 V IPP = 4A (8 x 20 μs pulse) 2
Junction Capacitance CJ 0.3 0.5 pF V = 0V, f = 1MHz 2
Peak Pulse Power Ppp 100 W 8/20µs 1
ESD per IEC 61000-4-2 (Air) VESD -30 30 kV Air discharge 1
ESD per IEC 61000-4-2 (Contact) VESD -30 30 kV Contact discharge 1
Operating Temperature Range TJ -55 125 ℃ Tamb=25°C unless otherwise specified 1
Storage Temperature Range TSTJ -55 150 ℃ Tamb=25°C unless otherwise specified 1

CAD (KiCad official)

  • Symbol: ESD9BL0521P
  • Footprint: Diode_SMD:D_SOD-882
  • 3D model: DFN1006-2 (KiCad packages3D, STEP)
  • 3D model files: esd9bl0521p-etched.step / esd9bl0521p-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esd9bl0521p.step / esd9bl0521p.glb are the bare package body.

Provenance

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

  • Datasheet: Leiditech datasheet (4 pp, sha256 ffa72f5b2f04494a, 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