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  • The TDA7851F is a breakthrough MOSFET technology class AB audio power amplifier, designed for high-power car radio.

    The fully complementary P-Channel/N-Channel output structure allows a rail-to-rail output voltage swing. This, combined with high output current and minimized saturation losses, sets new power references in the car-radio field, with unparalleled distortion performance.

    Key Features

    • Multipower BCD technology
    • High output power capability:
      • 4 x 48 W/4 Ω max.
      • 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 %
      • 4 x 72 W/2 Ω max.
    • MOSFET output power stage
    • Excellent 2 Ω driving capability
    • Hi-Fi class distortion
    • Low output noise
    • Standby function
    • Mute function
    • Automute at min. supply voltage detection
    • Low external component count:
      • Internally fixed gain (26 dB)
      • No external compensation
      • No bootstrap capacitors
    • Output DC offset detector
    • Protections:
      • Output short circuit to GND, to Vs, across the load
      • Very inductive loads
      • Overrating chip temperature with soft thermal limiter
      • Load dump voltage
      • Fortuitous open GND
      • Reversed battery
      • ESD

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6890
      4 x 48 W MOSFET quad bridge power amplifier
      4.0
      440.78 KB
      PDF
      DS6890

      4 x 48 W MOSFET quad bridge power amplifier

Publications and Collaterals

    • Description Version Size Action
      Intelligent analog power amplifiers 1.0
      715.73 KB
      PDF

      Intelligent analog power amplifiers

    • Description Version Size Action
      Power amplifiers and voltage regulators
      750.29 KB
      PDF

      Power amplifiers and voltage regulators

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TDA7851F
Active
FLEXIWATT FM2 25 Automotive Ecopack2
TDA7851FH-QIX
Active
FLEXIWATT 25 HB Automotive Ecopack2

TDA7851F

Package:

FLEXIWATT FM2 25

Material Declaration**:

PDF XML

Marketing Status

Active

Package

FLEXIWATT FM2 25

Grade

Automotive

RoHS Compliance Grade

Ecopack2

TDA7851FH-QIX

Package:

FLEXIWATT 25 HB

Material Declaration**:

Marketing Status

Active

Package

FLEXIWATT 25 HB

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
Package
Packing Type
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
TDA7851F Available at 4 distributors

Distributor availability ofTDA7851F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
AVNET AMERICA 157 0 Order Now
ARROW EUROPE 3 0 Order Now
MOUSER WORLDWIDE 352 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

157

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

352

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Buy now
Active
FLEXIWATT FM2 25 Tube EAR99 CHINA 2.5 / 1k
TDA7851FH-QIX No availability of distributors reported, please contact our sales office
Active
FLEXIWATT 25 HB Tube EAR99 CHINA 2.8 / 1k

TDA7851F

Marketing Status

Active

Unit Price (US$)

2.5

Budgetary Price (US$)*/Qty

2.5 / 1k

Distributor availability ofTDA7851F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
AVNET AMERICA 157 0 Order Now
ARROW EUROPE 3 0 Order Now
MOUSER WORLDWIDE 352 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

157

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

352

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Package

FLEXIWATT FM2 25

Packing Type

Tube

ECCN (US)

EAR99

Country of Origin

CHINA

TDA7851FH-QIX

Marketing Status

Active

Unit Price (US$)

2.8

Budgetary Price (US$)*/Qty

2.8 / 1k

Package

FLEXIWATT 25 HB

Packing Type

Tube

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors