component

COS8551TRA

Public Made by Adom

by adom

COSINE Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs cos8551tra: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
cos8551tra-etched.fit.json cos8551tra: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
cos8551tra-etched.glb cos8551tra: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
cos8551tra-etched.step cos8551tra: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
cos8551tra.glb Publish 0.1.0 · Ray
cos8551tra.kicad_mod Publish 0.1.0 · Ray
cos8551tra.kicad_sym Publish 0.1.0 · Ray
cos8551tra.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
cos8551tra.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json cos8551tra: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
README.md cos8551tra: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray

COS8551TRA

COSINE · Operational Amplifier · SOT-23-5

COS8551TRA from COSINE, in a SOT-23-5. 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 OUT output Amplifier output. Rail-to-rail output; voltage swing extends to within ~5 mV of each supply rail (RL=100k) or ~15 mV (RL=10k). Short-circuit source/sink current ~+/-7 mA.
2 -Vs power_in Negative power supply or ground. If not connected to ground, bypass with a 0.1 uF capacitor as close to the part as possible. Supply range 1.8 V to 5.5 V total (+Vs to -Vs), 6 V absolute maximum.
3 +IN input Non-inverting input of the amplifier. Rail-to-rail input; common-mode voltage range extends from -Vs - 0.3 V to +Vs + 0.3 V. Input bias current +/-100 pA typical.
4 -IN input Inverting input of the amplifier. Voltage range -Vs - 0.3 V to +Vs + 0.3 V. Input bias current +/-100 pA typical; internal diode clamps to supply rails limit input current to 10 mA.
5 +Vs power_in Positive power supply. Operating range 1.8 V to 5.5 V (referenced to -Vs). Bypass with a 0.1 uF capacitor placed as close to the pin as possible, between +Vs and -Vs (or between +Vs and GND).

Key specifications

Parameter Value
Manufacturer COSINE
Package SOT-23-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • COS8551TRA
  • COS8551TRB
  • COS8551TRC
  • COS8552SRA
  • COS8552SR
  • COS8552SRC
  • COS8552SRD
  • COS8552MRA
  • COS8552MRB
  • COS8552MRC
  • COS8554SR
  • COS8554SRB
  • COS8554SRC
  • COS8554TRA
  • COS8554TRB
  • COS8554TRC

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input Offset Voltage VOS 2 10 µV COS8551A 4
Input Offset Voltage Drift ΔVOS/ΔT 0.005 0.05 µV/°C -40°C to 125°C 4
Input Bias Current IB -500 100 500 pA 4
Input Offset Current IOS -500 100 500 pA 4
Common-Mode Voltage Range VCM -0.1 5.6 V VS = 5.5V 4
Common-Mode Rejection Ratio CMRR 120 dB VCM =0.1V to 4.9V 4
Open-Loop Voltage Gain AOL 145 dB VO=0.2V to 4.8V 4
Output Voltage Swing from Rail 5 mV RL=100kΩ 4
Output Voltage Swing from Rail 15 mV RL=10kΩ 4
Short-Circuit Current Sourcing ISR 7 mA Sourcing 4
Short-Circuit Current Sinking ISK -7 mA Sinking 4
Operating Voltage Range 1.8 5.5 V 4
Power Supply Rejection Ratio PSRR 80 100 dB VS = 1.8V to 5.5V 4
Power Supply: +Vs to -Vs 6 V +Vs to -Vs 3
Input Current 10 mA Input terminals diode-clamped; limit input current 3
Storage Temperature Range -65 150 °C 3
Junction Temperature 150 °C 3
Operating Temperature Range -40 125 °C 3
ESD Susceptibility, HBM 2000 V HBM 3
DC Supply Voltage 1.8 5.5 V 3
Operating ambient temperature -40 85 °C 3
Package Thermal Resistance, junction-to-ambient (SOT23-5) RθJA 190 °C/W SOT23-5 3

CAD (KiCad official)

  • Symbol: COS8551TRA
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: cos8551tra-etched.step / cos8551tra-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cos8551tra.step / cos8551tra.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
cos8551tra.step 85 KB You want the bare part, or you mark your own boards.
cos8551tra-etched.step 2.1 MB You want the part with COS8551TRA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 502 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: COSINE datasheet (12 pp, sha256 845c61f20f164396, 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