TDA7851A

$4.17

Description：IC AMP AB QUAD 75W 27FLEXIWATT
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:2b0fd6d75319 Category: Audio Amplifiers Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC AMP AB QUAD 75W 27FLEXIWATT
Series：-
Mfr：STMicroelectronics
Package：Tube
Type：Class AB
Output Type：4-Channel (Quad)
Max Output Power x Channels @ Load：75W x 4 @ 2Ohm
Voltage - Supply：8V ~ 18V
Features：Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type：Through Hole
Supplier Device Package：27-Flexiwatt (Vertical)
Package / Case：27-Flexiwatt, Formed Leads
Operating Temperature：-
Grade：-
Qualification：-

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TDA7851A

Overview

The TDA7851A is a Class-AB audio power amplifier utilizing MOSFET technology, designed for high-power car radio applications. It features a fully complementary P-Channel/N-Channel output structure enabling rail-to-rail voltage swing. Key electrical parameters include an output power of 48 W per channel into 4 Ohms and 72 W per channel into 2 Ohms maximum. The device operates within a supply voltage range of 8 V to 18 V and maintains a total harmonic distortion plus noise of 0.01%. It supports a minimum operating temperature of -55°C and a maximum of +150°C.

Feature Summary

Multipower BCD technology with high output power capability
Low external component count due to internally fixed gain
Comprehensive protection against short circuits and overtemperature

Applications

High-power car radio systems
Automotive audio amplification
Quad bridge power amplifier circuits

Procurement Notes

Verify the specific package variant, as the TDA7851 series includes Flexiwatt-25 and Flexiwatt-27 options. Confirm AEC-Q100 qualification status if automotive reliability is required. Ensure the selected part matches the intended load impedance and thermal management requirements for the target application environment.

Selection Notes

Select this component for designs requiring high efficiency and low distortion in automotive settings. The internal fixed gain simplifies circuit design by eliminating external compensation networks. Consider the thermal performance and heat dissipation needs associated with the Flexiwatt package when integrating into the final assembly.

Part Context

This device belongs to STMicroelectronics' portfolio of Class-AB audio power amplifiers. It utilizes Multipower BCD technology to achieve high performance in a compact form factor. The product line targets the automotive market with robust protection features and high drive capabilities for various speaker loads.

Replacement Considerations

TDA7851L shares similar functional characteristics but may differ in package type or thermal specifications. Verify pin compatibility and electrical limits before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.