component
RS8751XF
Public Made by Adomby adom
Jiangsu RUNIC Tech Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownRS8751XF
Jiangsu RUNIC Tech · Operational Amplifier · SOT-23-5
RS8751XF from Jiangsu RUNIC Tech, 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 stage; swings to within ~23 mV of either supply rail with a 1 kΩ load. Output source ~85 mA, sink ~125 mA (typical). |
| 2 | V- | power_in | Negative supply rail. Tie to GND for single-supply operation (2.5 V to 5.5 V total) or to the negative rail for split-supply operation (±1.25 V to ±2.75 V). Total V+ to V- must not exceed 7.0 V absolute maximum. Bypass with 0.1 uF close to the pin. |
| 3 | +IN | input | Non-inverting input. Rail-to-rail input common-mode range extends from -0.2 V to +3.9 V with Vs = 5 V. Input bias current ~1 pA typical. Input signals swinging more than 0.5 V beyond either supply rail must be current-limited to ≤10 mA (internal ESD/clamp diodes to rails). |
| 4 | -IN | input | Inverting input. Same common-mode and bias-current specifications as the non-inverting input. Typical input offset voltage between the two inputs is 1.5 mV (max ±7.5 mV). |
| 5 | V+ | power_in | Positive supply rail. Operating supply voltage 2.5 V to 5.5 V referenced to V- (absolute max V+ to V- = 7.0 V). Quiescent current ~2.9 mA typical per amplifier. Bypass with 0.1 uF close to the pin (10 uF bulk recommended). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOT-23-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
RS8751XFRS8751XFBXFRS8751XFXKRS8751XFXM
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | Vs | 2.5 | 5.5 | V | 3 | ||
| Input Common-Mode Voltage Range | Vcm | -0.2 | 3.9 | V | Vs= 5V | 3 | |
| Input Offset Voltage | Vos | -7.5 | 1.5 | 7.5 | mV | Vcm=Vs/2 | 3 |
| Input Offset Voltage Drift | ΔVos/ΔT | 4 | µV/°C | Vcm=Vs/2, -40°C ≤ TA ≤125°C | 3 | ||
| Quiescent Current/Amplifier | IQ | 2.9 | 3.5 | mA | 3 | ||
| Power-Supply Rejection Ratio | PSRR | 70 | 90 | dB | Vs=2.5V to 5.5V, Vcm=(V-)+0.5V | 3 | |
| Input Bias Current | IB | 1 | 10 | pA | 3 | ||
| Input Offset Current | Ios | 1 | 10 | pA | 3 | ||
| Common-Mode Rejection Ratio | CMRR | 66 | 85 | dB | Vs= 5.5V, Vcm=-0.2V to 3.5V | 3 | |
| Open-Loop Voltage Gain | AOL | 95 | 110 | dB | Vs=5.0V,RL=1KΩ,Vo=Vs-0.2V | 3 | |
| Open-Loop Voltage Gain | AOL | 78 | 85 | dB | Vs=5.0V,RL=150Ω,Vo=Vs-0.3V | 3 | |
| Output Swing From Rail | 23 | mV | RL=1KΩ | 3 | |||
| Output Current Source | Iout | 85 | mA | 3 | |||
| Output Current Sink | Iout | 125 | mA | 3 | |||
| Small-Signal Bandwidth G=1 | 250 | MHz | VOUT=100mVpp,G=1 | 3 | |||
| Small-Signal Bandwidth G=2 | 130 | MHz | VOUT=100mVpp,G=2 | 3 | |||
| Small-Signal Bandwidth G=5 | 33 | MHz | VOUT=100mVpp,G=5 | 3 | |||
| Small-Signal Bandwidth G=10 | 15 | MHz | VOUT=100mVpp,G=10 | 3 | |||
| Slew Rate | SR | 180 | V/us | 3 | |||
| Gain-Bandwidth Product | GBP | 250 | MHz | 3 | |||
| Phase Margin | PM | 62 | ° | 3 | |||
| Input Voltage Noise (peak-to-peak) | enp-p | 13 | μVpp | f = 0.1 Hz to 10 Hz | 3 | ||
| Input Voltage Noise Density | en | 8 | nV/√Hz | f = 1 MHz | 3 | ||
| Supply Voltage, V+ to V- | 7 | V | 2 | ||||
| Input Terminals Voltage | -0.5 | V | Printed upper limit is (V+)+0.5V | 2 | |||
| Input Terminals Current | -10 | 10 | mA | 2 | |||
| Operating Temperature | TA | -40 | 125 | °C | 2 | ||
| Storage Temperature | Tstg | -65 | 150 | °C | 2 | ||
| Junction Temperature | TJ | 150 | °C | 2 | |||
| Package Thermal Resistance SOT23-5 | θJA | 200 | °C/W | TA = +25°C, SOT23-5 | 2 |
CAD (KiCad official)
- Symbol:
RS8751XF - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
rs8751xf-etched.step/rs8751xf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rs8751xf.step/rs8751xf.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
rs8751xf.step |
85 KB | You want the bare part, or you mark your own boards. |
rs8751xf-etched.step |
1.6 MB | You want the part with RS8751XF already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 404 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: Jiangsu RUNIC Tech datasheet (14 pp, sha256
870e4fce48ef79ec, 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).