Picking the wrong operational amplifier can mean re-spinning a PCB, adding an extra component, or chasing a noise problem that shouldn't exist. For procurement and design teams working on industrial, audio, or instrumentation circuits, the TL08x family and NE5532 are among the most common parts on any BOM — yet they are not interchangeable.
This guide compares TL082, TL084, NE5532, and LM2904 across the specs that actually matter, shows which substitute works where, and lists current stock so you can source immediately.
Quick Comparison Table
| Parameter | TL082 | TL084 | NE5532 | LM2904 |
|---|---|---|---|---|
| Input type | JFET | JFET | Bipolar | Bipolar |
| Channels | 2 | 4 | 2 | 2 |
| Gain bandwidth | ~3–4 MHz | ~3–4 MHz | ~10 MHz | ~0.7–1 MHz |
| Slew rate | 13 V/µs | 13 V/µs | 9 V/µs | 0.3 V/µs |
| Input noise | ~16–18 nV/√Hz | ~16–18 nV/√Hz | ~5 nV/√Hz | ~40 nV/√Hz |
| Supply range | ±3.5 to ±18 V | ±3.5 to ±18 V | ±3 to ±22 V | 3 to 26 V single |
| Input impedance | Very high (JFET) | Very high (JFET) | Moderate | Moderate |
| Typical use | High-impedance, precision analog | Same as TL082, more channels | Audio, low-noise stages | Low-power, battery, industrial |
| Stock at Future-IC | 500,000 pcs | 497,500 pcs | 5,000 pcs | 7,500 pcs |
Values are typical per manufacturer datasheets (ST / TI). Always verify against the specific datasheet for your design.
TL082 vs TL084: What's Actually Different?
The TL082 and TL084 share the same JFET-input core design — the practical difference is channel count:
- TL082 — dual op amp in an SOIC-8 (or DIP-8) package. Use it when your circuit needs one or two channels.
- TL084 — quad op amp in an SOIC-14 package. Same performance per channel, four amplifiers per chip, lower per-channel cost and board space on multi-stage designs.
Because the electrical core is identical, you can often migrate a design from TL082 to TL084 (or vice versa) by adjusting the package and re-mapping the pins — useful when your current part is on allocation and you need a drop-in alternative. If you're designing a new board with 3+ amplifier stages, start with the TL084 to save space and cost.
TL082 vs NE5532: JFET vs Bipolar
This is the classic "which one is better?" debate, and the answer depends on the application:
- NE5532 is a bipolar-input amplifier with roughly 3x the bandwidth (~10 MHz) and ~3x lower noise (~5 nV/√Hz). It is the workhorse of professional audio — preamps, mixers, active crossovers, headphone drivers.
- TL082 uses JFET inputs with extremely high input impedance (10¹² Ω range), which makes it the better choice for high-impedance sources: sensor buffers, pH probes, photodiodes, precision integrators, sample-and-hold stages.
Rule of thumb: driving audio and need low noise → NE5532. Buffering a high-impedance signal or building precision analog front-ends → TL082/TL084. For general-purpose signal conditioning where both would work, the TL082 is usually the more forgiving, easier-to-source option.
TL082 vs LM2904 / LM358: Low-Power Alternatives
If your board is battery-powered or thermally constrained:
- LM2904 (and the ubiquitous LM358) runs on single supplies from 3 V and draws microamp-level quiescent current, at the cost of bandwidth (~0.7–1 MHz) and higher noise.
- The TL082 needs a bit more headroom (±3.5 V minimum) but delivers ~4–5x the bandwidth and far better input characteristics.
Use LM2904 for simple signal conditioning in industrial and automotive environments (it is also rated for −40 °C to +125 °C); reach for the TL08x when signal fidelity matters more than power draw.
Application Quick-Pick Table
| Your circuit | Best fit | Why |
|---|---|---|
| Audio preamp / mixer | NE5532 | Low noise, high bandwidth |
| Sensor / transducer buffer | TL082 or TL084 | JFET input, high impedance |
| Active filter (multi-stage) | TL084 | 4 channels, same core as TL082 |
| Photodiode / pH / high-Z front-end | TL082 | 10¹² Ω input impedance |
| Battery device, simple gain stage | LM2904 | Single-supply 3 V, low power |
| Comparator applications | LM2903 / LM293 | Dedicated comparators, not op amps |
⚠️ A common BOM mistake: using an op amp as a comparator. For level detection and window comparators, use a dedicated comparator like the LM2903 or LM293 instead — they're designed for open-loop operation and faster recovery.
Substitute & Cross-Reference Quick Table
| You're looking for | Drop-in / direct alternative | Package note |
|---|---|---|
| TL082CP (DIP-8) | TL082IDT (SOIC-8) | Same die, SMD package |
| TL084CN (DIP-14) | TL084IDT (SOIC-14) | Same die, SMD package |
| TL082 / TL084 (SMD) | TL082IDT / TL084IDT | ST, automotive-grade temp range |
| NE5532P (DIP-8) | NE5532DR (SOIC-8) | TI, same audio performance |
| LM358 / LM2904 | LM2904DT (SOIC-8) | Industrial temp range −40…+125 °C |
When a legacy DIP part is obsolete or on allocation, the SMD equivalents above are the standard migration path — same performance, better availability, no redesign required.
Stock Availability: Ready to Ship
All parts below are original, factory-new, and available for immediate shipment:
| Part No. | Brand | Description | Package | Qty Available |
|---|---|---|---|---|
| TL082IDT | ST | Dual JFET op amp | SOIC-8 | 500,000 |
| TL084IDT | ST | Quad JFET op amp | SOIC-14 | 497,500 |
| NE5532DR | TI | Dual low-noise op amp | SOIC-8 | 5,000 |
| LM2904DT | ST | Dual low-power op amp | SOIC-8 | 7,500 |
| LM2903DT | ST | Dual low-power comparator | SOIC-8 | 287,500 |
| LM293DR | TI | Dual comparator | SOIC-8 | 5,000 |
Browse TL082 inventory → · Browse TL084 inventory → · Browse NE5532 inventory → · Browse LM2904 inventory →
Why source op amps from Future-IC?
✅ 1M+ pieces on the shelf — TL082IDT and TL084IDT in half-a-million quantities each
✅ 100% original, traceable — lot/date codes and COC documentation with every shipment
✅ Flexible MOQ — from prototyping quantities to full reels
✅ Global logistics — DDP, FOB, or EXW to match your terms; 24h dispatch
✅ 4-hour BOM response — send your full BOM, get availability + pricing fast
FAQ
Q: What is the difference between TL082 and TL084? A: Same JFET-input core and electrical performance. TL082 has 2 channels (SOIC-8), TL084 has 4 channels (SOIC-14). Choose by channel count and package.
Q: Is NE5532 better than TL082? A: For audio, often yes — lower noise (~5 nV/√Hz) and higher bandwidth (~10 MHz). For high-impedance sensor buffering, the TL082's JFET inputs are better. They solve different problems.
Q: Can I replace TL082 with TL084? A: Electrically yes — they share the same core. You only need to adjust the package (SOIC-8 → SOIC-14) and re-map channels.
Q: What is a good TL082 substitute? A: The SMD TL082IDT is the direct substitute for TL082CP. Other JFET-input dual op amps can work, but verify pinout and specs first.
Q: Can the TL082 run on a single supply? A: Yes — 7 V to 36 V single supply, or ±3.5 V to ±18 V split supply.
Q: Where can I buy TL082 in stock today? A: Future-IC holds 500,000 pcs of TL082IDT and 497,500 pcs of TL084IDT, ready to ship worldwide.
How to Get a Quote
- Send your BOM with part numbers and target quantities
- Get availability + pricing within 4 business hours
- Ship within 24h on confirmed orders
📩 Submit your BOM for availability check →
Related: Analog IC Price Surge 2026: Navigating TI, ADI & ST Price Hikes · Industrial MCUs and MOSFETs: Current Spot Availability
Stock data as of August 2026. Spot availability is dynamic — contact us for real-time confirmation.
