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BR431RM

Public Made by Adom

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Foshan Blue Rocket Elec Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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BR431RM

Foshan Blue Rocket Elec · Voltage References · SOT-23

BR431RM from Foshan Blue Rocket Elec, in a SOT-23. 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 pin, sinks 1.0mA to 100mA continuous cathode current with cathode-to-anode voltage up to 37V.
2 R input Reference input pin, with reference voltage 2.490V to 2.510V (A grade) or 2.480V to 2.520V (B grade) at IK=10mA and reference input current range 0.05mA to 10mA.
3 A passive Anode pin, the common return for the cathode current, with minimum cathode current for regulation of 0.4mA to 1mA.

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
Package SOT-23
Category Power Management
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Cathode to Anode Voltage VKA 37 V 2
Cathode Current Range, Continuous IK -100 100 mA 2
Reference Input Current Range, Continuous IREF 0.05 10 mA 2
Power Dissipation PD 370 mW 2
Operating Ambient Temperature Tamb -40 125 ℃ 2
Junction Temperature Tj 160 ℃ 2
Storage Temperature Range Tstg -65 150 ℃ 2
Reference Input voltage (A=0.4%) VREF 2.49 2.5 2.51 V VKA=VREF IK=10mA(A=0.4%) 2
Reference Input voltage (B=0.8%) VREF 2.48 2.5 2.52 V VKA=VREF IK=10mA(B=0.8%) 2
Deviation of Reference Input Voltage Over-Temperature △VREF/T 4.5 17 mV VKA=VREF IK=10mA TA=-25～85℃ 2
Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (VKA 10V to VREF) △VREF/△VKA -1 -2.7 mV/V IK=10mA △VKA=10V to VREF 2
Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (VKA 36V to 10V) △VREF/△VKA -0.45 -2 mV/V IK=10mA △VKA=36V to 10V 2
Reference Input current IREF 1 4 μA IK=10mA R1=10Ω R2=open 2
Deviation of Reference Input Current Over Full Temperature Range △IREF/T 0.4 1.2 μA IK=10mA R1=10KΩ, R2=open TA=-40～125℃ 2
Minimum Cathode Current for Regulation IK(min) 0.4 1 mA VKA=VREF 2
Off-state cathode current IK(off) 0.05 1 μA VKA=36V VREF=0V 2
Dynamic impedance /ZKA/ 0.15 0.5 Ω VKA=VREF IK=1mA to 100mA f≤1.0KHz 2

CAD (KiCad official)

  • Symbol: BR431RM
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: br431rm-etched.step / br431rm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); br431rm.step / br431rm.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (7 pp, sha256 b6bc841eef822450, retrieved 2026-10-27, 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