LM321MFX-JSM
Public Unreviewedby Ray
JSMSEMI LM321MFX Operational Amplifier, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownLM321MFX-JSM
JSMSEMI LM321MFX · Operational Amplifier · SOT-23-5
LM321MFX-JSM from JSMSEMI LM321MFX, 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 | +IN | input | Non-inverting op-amp input. Input common-mode range includes ground; V- to (Vcc-1.5V). Input bias current ±45 nA typ. |
| 2 | V- | power_in | Negative supply / ground. Tie to GND for single-supply operation or to negative rail for dual-supply (±12V max). |
| 3 | -IN | input | Inverting op-amp input. Input offset voltage ±2 mV typ, input bias current ±45 nA typ. |
| 4 | OUTPUT | output | Op-amp output. Source current 20 mA typ, sink 10 mA typ at Vcc=15V. Short-circuit protected (continuous to ground for V≤15V). |
| 5 | V+ | power_in | Positive supply. Single-supply range up to 24V (or ±12V dual). Quiescent current 0.5 mA typ at 5V, 0.7 mA typ at 24V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI LM321MFX |
| Package | SOT-23-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
LM321MFX-JSM
CAD (KiCad official)
- Symbol:
LM321MFX-JSM - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm321mfx-jsm.step |
85 KB | You want the bare part, or you mark your own boards. |
lm321mfx-jsm-etched.step |
1.8 MB | You want the part with LM321MFX-JSM already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 466 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: JSMSEMI LM321MFX datasheet (5 pp, sha256
4c2b85fecc25909f, 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).