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Contents

README

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TISP61089BDR-S

BOURNS · ESD And Surge Protection (TVS/ESD) · SO-8

TISP61089BDR-S from BOURNS, in a SO-8. 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 K1 passive Thyristor cathode K1 (Tip) of the SCR/diode pair; connects to the line Tip conductor and is clipped to the gate-referenced negative supply voltage.
2 G input Gate terminal connected to the SLIC negative supply VBATH (with a 220 nF decoupling capacitor) to set the negative protection voltage, supporting battery voltages down to -155 V.
3 NC unconnected No internal connection.
4 K2 passive Thyristor cathode K2 (Ring) of the SCR/diode pair; connects to the line Ring conductor and is clipped to the gate-referenced negative supply voltage.
5 K2 passive Thyristor cathode K2 (Ring), internally the same node as pin 4; connects to the line Ring conductor.
6 A power_in Anode (Ground) common to both protector elements; positive overvoltages are clipped to ground through diode forward conduction.
7 A power_in Anode (Ground) common to both protector elements, internally the same node as pin 6.
8 K1 passive Thyristor cathode K1 (Tip), internally the same node as pin 1; connects to the line Tip conductor.

Key specifications

Parameter Value
Manufacturer BOURNS
Package SO-8
Category Circuit Protection
Pins 8

CAD (KiCad official)

  • Symbol: TISP61089BDR-S
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: tisp61089bdr-s-etched.step / tisp61089bdr-s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tisp61089bdr-s.step / tisp61089bdr-s.glb are the bare package body.

Provenance

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

  • Datasheet: BOURNS datasheet (21 pp, sha256 2fa43e897ce12f47, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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