Product Overview
LM358 Dual Low-Power Operational Amplifier - SOIC-8, Single Supply, 3V to 32V, Unused NOS
Condition
Unused NOS. Units show no damage or prior soldering - leads are clean and unsoldered across all photos. Markings confirm LM358 designation on each package. Sourced from an electronics distributor consolidating inventory.
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Product Overview
Texas Instruments LM358 - dual, low-power, general-purpose operational amplifier in an SOIC-8 surface-mount package. Two independent op-amps in one package, each capable of operating from a single supply voltage between 3V and 32V, or a dual supply from ±1.5V to ±16V. Input common-mode range extends to ground, making it practical for circuits that need to sense signals near the negative rail without a negative supply. Long production history, wide availability, and straightforward single-supply behavior make it one of the most-used op-amps in analog circuit work across industrial, hobbyist, and repair applications.
Key Features
- Dual independent op-amps in one SOIC-8 surface-mount package
- Single supply: 3V to 32V; dual supply: ±1.5V to ±16V
- Input common-mode voltage range includes ground
- Gain bandwidth product: 1 MHz typical
- Slew rate: 0.3 V/µs
- Output current: approximately 20 mA
- Low quiescent current draw - suitable for battery-powered circuits
- Short-circuit protected output
- Compatible with 5V microcontroller systems including Arduino and ESP32
Applications
- Hobbyist wiring up a temperature or light sensor to an Arduino - the LM358 sits between the sensor and the ADC pin, amplifying the weak analog signal to a readable range without requiring a separate negative supply rail
- Repair technician pulling a faulty op-amp off a control board and soldering in a fresh LM358 to restore a malfunctioning industrial controller or power supply feedback loop
- DIY audio builder constructing a basic mic preamp or effects pedal stage where low power and single-supply simplicity matter more than ultra-wide bandwidth
- Engineer designing a 4-20mA current loop transmitter circuit for process instrumentation, using the LM358 as the signal conditioning block
- Maker building an active low-pass or bandpass filter for a sensor signal chain, taking advantage of the LM358's single-supply compatibility and low parts count
- Synth builder using the LM358 as a comparator or envelope follower stage in a DIY VCO or modular circuit
Frequently Asked Questions
What package is this - DIP or surface mount?
Surface mount. Photos confirm SOIC-8 gull-wing packages. These are not DIP through-hole parts. If your board or breadboard requires DIP-8, this is not the right package for your application.
Can I run this from a 5V Arduino or ESP32 supply?
Yes. The LM358 operates from a single supply as low as 3V, so a 5V microcontroller supply is within its operating range. Input common-mode range includes ground, so you can sense signals near 0V without a negative rail.
What are the output swing limitations I should know before using this?
The output cannot swing to the positive supply rail - it typically reaches approximately VCC minus 1.5V to 2V. If your circuit needs a full rail-to-rail output, the LM358 is not the right choice. This also matters if you are feeding its output directly into an ADC expecting a full-range swing.
Is this suitable for audio or high-speed signal work?
For basic low-frequency audio amplification - microphone preamp stages, envelope followers, effects pedal buffers - it functions well. For high-fidelity audio or any signal above 1 MHz, the 1 MHz gain bandwidth product and 0.3 V/µs slew rate are limiting factors and will cause distortion.
What is the output current limit?
Approximately 20 mA. The LM358 cannot directly drive relays, motors, or high-current LEDs. An external transistor or buffer stage is required for loads above that threshold.
The LM358 has been the first op-amp on a thousand breadboards because it asks almost nothing of the circuit around it - just a single supply and a handful of resistors. These are unused, unsoldered, and ready to go to work in whatever you are building.
