Audio amplifier Texas Instruments OPA541AP 125 W

Name: Audio amplifier Texas Instruments OPA541AP, OPA541AP
Brand: texas instruments
SKU: 1773906
Price: 43.99 EUR
Availability: InStock

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Audio amplifier Texas Instruments OPA541AP, 125 W, single-channel, 20.3×4.62×17.6 mm

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

Texas Instruments OPA541AP is a single-channel audio amplifier rated at 125 W. The device is supplied in a compact package with dimensions 20.3 × 4.62 × 17.6 mm. Designed for high-power audio applications, it provides a dedicated output stage for driving speakers in pro audio, amplifiers, and audio equipment where a single high-power channel is required.

Available for order: 2 pcs.

Warranty: 2 Years

SKU: 1773906

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Product information

Description

Texas Instruments OPA541AP is a single-channel power operational amplifier rated for high-power audio applications with a maximum output power of 125 W. The device is supplied in a compact power plastic package with nominal dimensions 20.3 × 4.62 × 17.6 mm and is designed to drive speakers and loads that require continuous high current. The amplifier supports supply rails up to ±40 V and can deliver continuous output currents up to 5 A. Internal protection and a user-programmable current-limit function allow reliable operation in demanding audio and industrial environments.

Advantages

The OPA541AP integrates a single current-limit resistor topology which sets both positive and negative current limits, simplifying design and eliminating the need for separate limit resistors in hybrid amplifier replacements. The device combines bipolar and FET process technology for robust output stage performance and stable operation under heavy loads. The power plastic package features a copper-lead frame to improve heat transfer for better thermal management, while an alternate industry-standard TO-3 hermetic package option provides isolated mounting to a heatsink when required.

Suitable for

Professional audio power stages and single-channel amplifiers
Speaker drivers and active monitor modules
Power conditioning stages in audio equipment and instrumentation
Replacement of hybrid power amplifiers requiring a single current-limit setting

Key specifications

Output power rating: 125 W (single-channel applications)
Supply voltage range: up to ±40 V
Continuous output current: up to 5 A
Package dimensions: 20.3 × 4.62 × 17.6 mm (power plastic package)
Internal user-programmable current-limit via single external resistor
Process technology: proprietary bipolar and FET fabrication
Thermal features: copper-lead frame for improved heat transfer; TO-3 option allows isolated heatsink mounting

How to use

Install the OPA541AP following standard amplifier PCB layout guidelines to ensure adequate thermal dissipation and to minimize parasitic inductance and resistance in output paths. Configure the supply rails up to ±40 V as required by your application, observing absolute maximum ratings. Set the desired current limit by selecting a single external resistor connected to the current-limit pin, which programs both positive and negative current limits simultaneously. Provide appropriate decoupling capacitors close to the supply pins and follow datasheet recommendations for input compensation and stability with reactive speaker loads.

Usage recommendations

Use a heatsink or ensure sufficient copper area on the PCB for thermal dissipation when operating near the device's current and power limits. Verify the programmed current-limit resistor value on a prototype under expected load conditions to prevent false triggering or insufficient protection. For installations requiring direct heatsink mounting, consider the TO-3 hermetic package option to avoid additional insulating hardware.

All features

Number of pins:: 11
Bandwidth:: 1.6 MHz

Technical details

Type:: Audio amplifier
Power:: 125 W
Package type:: TO-220

Other features

Channels quantity:: 1 channels
Package depth:: 532.13 mm
Package height:: 13.34 mm
Package width:: 36.32 mm

Logistics data

Quantity per pack:: 25 pc(s)

Weight & dimensions

Height:: 17.63 mm
Width:: 20.27 mm
Depth:: 4.62 mm

Operational conditions

Storage temperature (T-T):: -65 - 150
Operating temperature (T-T):: -25 - 85

Instructions

texas-instruments-OPA541AP-1773906.pdf

Description

Instructions

texas-instruments-OPA541AP-1773906.pdf

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Customer questions

FAQ

How much does the Audio amplifier Texas Instruments OPA541AP 125 W cost, and is it available for purchase?

The price is 43.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All texas instruments products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized texas instruments service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

Where can I download the instructions for Audio amplifier Texas Instruments OPA541AP 125 W?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

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