component

HT431BRZ

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by Ray

HTCSEMI Voltage Reference, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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HT431BRZ

HTCSEMI · Voltage Reference · SOP-8

HT431BRZ from HTCSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 REFERENCE input Reference (R) input to the internal error amplifier's non-inverting input (compared against the internal 2.495 V bandgap). External resistor divider from cathode to anode sets the programmed regulation voltage: VKA = VREF x (1 + R1/R2) + IREF x R1. Input current ~1.8 μA typ (4 μA max).
2 ANODE power_in Anode (A) - the low-side/return terminal of the shunt reference, referenced to circuit ground in a typical shunt-regulator topology. Internal error-amp emitter/reference return.
3 CATHODE output Cathode (K) - high-side shunt terminal that sinks current to regulate VKA. Cathode voltage rating 44 V max (operating up to 40 V); continuous cathode current -100 to +150 mA absolute max, 0.5-100 mA recommended for regulation.

Key specifications

Parameter Value
Manufacturer HTCSEMI
Package SOP-8
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • HT431BRZR
  • HT431BRZ

CAD (KiCad official)

  • Symbol: HT431BRZ
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HTCSEMI datasheet (6 pp, sha256 0717f21d1e892efe, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF