This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.


Audio Amp Speaker 4-CH Stereo 48W Class-AB Automotive 25-Pin FLEXIWATT(Vertical) Tube

Inquiry Add To Bom

STPA001 General Description

The STPA001 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 which, combined with high output current and minimized saturation losses sets new power references in the car-radio field, with unparalleled distortion performances. The STPA001 can operate down to 6V and this makes the IC compliant to the most recent OEM specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection.

STMicroelectronics, Inc Inventory

Key Features

  • Multipower BCD technology
  • High output power capability:
  • 4 x 50 W/4 Ω Max.
  • 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 %
  • 4 x 72 W/2 Ω Max.
  • 4 x 50 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
  • 2 Ω driving capability
  • Hi-Fi class distortion
  • Low output noise
  • High immunity to RF noise injection
  • Standby function
  • Mute function
  • Automute at min. supply voltage detection
  • Low external component count
  • Internally fixed gain (26 dB)
  • Protections:
  • Output short circuit to GND, to Vs, across the load
  • Very inductive loads
  • Overrating chip temperature with soft thermal limiter
  • Output DC offset detection
  • Load dump
  • Fortuitous open GND
  • Reversed battery
  • ESD
  • Capable to operate down to 6 V (e.g. “Startstop”)
  • Output short circuit to GND, to Vs, across the load
  • Very inductive loads
  • Overrating chip temperature with soft thermal limiter
  • Output DC offset detection
  • Load dump
  • Fortuitous open GND
  • Reversed battery
  • ESD
  • Capable to operate down to 6 V (e.g. “Startstop”)
STMicroelectronics, Inc Original Stock
STMicroelectronics, Inc Inventory


Category Integrated Circuits (ICs)LinearAmplifiersAudio Amplifiers Mfr STMicroelectronics
Series - Package Tube
Product Status Active Type Class AB
Output Type 4-Channel (Quad) Max Output Power x Channels @ Load 50W x 4 @ 4Ohm
Voltage - Supply 6V ~ 18V Features Mute, Standby
Mounting Type Through Hole Operating Temperature -
Supplier Device Package 25-Flexiwatt (Vertical) Package / Case 25-Flexiwatt (Formed Leads)
Base Product Number STPA001


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray

Ratings and Reviews

S**a Dec 22, 2020

Order received before 60 days of protection to the c.p. 94462 by yanwen economic air mail, i paid it 2019-07-31 13:27 and received it on september 25, 56 day s since payment, although i didn't hear from him for long, ask the seller to extend the protection time and kindly agreed. The order arrived without damage in a slightly padded envelope and the product corresponds to the description. The quality is very good a and at a good price, buy 6 i have only tried 1 and respond when i do more tests and the certainty that they are good as i'll write another review. I recommend the seller and the product, highly recommended. To buyers, leave your impressions not just an empty rating, it helps others to know what the seller and product looks like.

L**n Oct 20, 2020

Very fast dispatch arrived in 9 days and in perfect condition the productsShop highly recommended

C**n Jun 19, 2020

Super fast, excellent quality. Many thanks!

M**n Feb 16, 2020

best product and best sleeping time

A**n Oct 16, 2019

Excellent product, soldering smooth, flux washed. Shipping 47 days.



You need to log in to reply. Sign In | Sign Up

Buying Guide

  • What is the lifespan of STPA001?

    The lifespan of STPA001 depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of STPA001?

    You can find it with PDF Datasheet for STPA001 on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of STPA001?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of STPA001 or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.