

Overview
The OPA340NA is an operational Amplifier made by Texas Instruments in a SOT-23-5 package with 5 pins. SOT-23-5 Operational Amplifier ROHS.
PCBKit's library has its KiCad symbol (Amplifier_Operational:OPA340NA, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C967434). 29 open-source boards in 25 repositories on GitHub use it.
Symbol
Footprint
Order codes
1- OPA340NALCSC C967434
Pinout
5| Pin | Name | Type |
|---|---|---|
| 1 | — | Output |
| 2 | V- | Power in |
| 3 | + | Input |
| 4 | - | Input |
| 5 | V+ | Power in |
Open-source boards using it
All 29- 2 layers28 × 30 mm

- 4 layers150 × 50 mm

- 4 layers214 × 142.6 mm

Unmechanical sweepish
ebastler/UnMechanical
Capacitive touch keyboard running QMK firmware
168 parts13CERN-OHL-P-2.0 - 4 layers46 × 55.8 mm

- 4 layers74.4 × 50.2 mm

- 4 layers80 × 30 mm

Logic board
jbush001/HeadphoneGuitarPracticeAmp
Portable headphone amplifier/effects processor for electric guitar practice.
55 parts4Apache-2.0 - 2 layers49 × 34 mm

- 4 layers20.3 × 68.6 mm

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<iframe src="https://pcbkit.io/embed/parts/ti/OPA340NA" title="OPA340NA in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/OPA340NA.jpg" alt="OPA340NA" width="1200" height="900">[](https://pcbkit.io/parts/ti/OPA340NA)Questions
Is there a KiCad symbol and footprint for the OPA340NA?
Yes. The symbol is Amplifier_Operational:OPA340NA and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the OPA340NA?
SOT-23-5, with 5 pins. Its footprint is drawn on this page.
Where can I order the OPA340NA?
JLCPCB lists it as part C967434, with 0 in stock; the sellers' links on this page open their listings.
What can replace the OPA340NA?
Parts like it in the library: the LMV321IDBVR by UMW, the LM321MF by UMW, the TLV9061IDBV by Texas Instruments and the LM321-TR by Gainsil. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the OPA340NA?
29 boards in 25 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8LMV321IDBVR
SOT-23-5-40℃~+125℃ 1 10nA 10pA 1MHz 2.1V~5.5V 2.7uV/℃ 20nV/√Hz@10kHz 25mA 45uA 520V/ms 5mV 70dB Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSUMWOperational AmplifierLM321MF
SOT-23-5L-40℃~+85℃ 1MHz 2mV 3V~32V 3nA 400V/ms 40mA 430uA 45nA 90dB SOT-23-5L Operational Amplifier ROHSUMWOperational AmplifierTLV9061IDBV
SOT-23-5-40℃~+125℃ 0.05pA 0.5pA 1 1.6mV 1.8V~5.5V 103dB 10MHz 10nV/√Hz@1kHz 50mA 530nV/℃ 538uA 6.5V/us Enable/shutdown function、ESD protection、EMI filtering/RF suppression Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSTexas InstrumentsOperational AmplifierLM321-TR
SOT-23-5-14V~-1.5V、1.5V~14V -25℃~+85℃ 1 120uA 1MHz 200V/ms 3V~28V 45nA 5mV 5nA 60mA 70dB 7uV/℃ Built-in compensation SOT-23-5 Operational Amplifier ROHSGainsilOperational AmplifierLM321
SOT-23-5-18V~18V 0℃~+70℃ 1 1.2MHz 250nA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOT-23-5 Operational Amplifier ROHSMSKSEMIOperational AmplifierLM321MFX
SOT-23-5-40℃~+85℃ 1 1MHz 3V~30V 400V/ms 40mA 40nV/√Hz@1kHz 430uA 500nA 5nA 7mV 85dB SOT-23-5 Operational Amplifier ROHSTexas InstrumentsOperational AmplifierAS321KTR-G1
SOT-23-5-18V~-1.5V、1.5V~18V -40℃~+85℃ 1 20nA 2mV 30nA 350uA 3V~36V 40mA 70dB 7uV/℃ Built-in compensation SOT-23-5 Operational Amplifier ROHSDiodes IncorporatedOperational AmplifierLM321A-TR
SOT-23-5-40℃~+125℃ 1 100uA 120dB 25mA 3V~36V 3mV 500V/ms 60pA 60pA 70nV/√Hz@1kHz 7uV/℃ 900kHz Rail-to-rail output SOT-23-5 Operational Amplifier ROHS3PEAKOperational Amplifier