---
product_id: 44337969
title: "NTE Electronics NTE181 NPN Silicon Power Transistor, High Power Audio Amplifier, 100V, 30 Amp"
brand: "nte electronics"
price: "€ 18.62"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.pt/products/44337969-nte-electronics-nte181-npn-silicon-power-transistor-high-power-audio
store_origin: PT
region: Portugal
---

# 100V Power 0.145kg Weight 30A Current NTE Electronics NTE181 NPN Silicon Power Transistor, High Power Audio Amplifier, 100V, 30 Amp

**Brand:** nte electronics
**Price:** € 18.62
**Availability:** ✅ In Stock

## Summary

> 🎶 Amplify Your Audio Experience!

## Quick Answers

- **What is this?** NTE Electronics NTE181 NPN Silicon Power Transistor, High Power Audio Amplifier, 100V, 30 Amp by nte electronics
- **How much does it cost?** € 18.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/44337969-nte-electronics-nte181-npn-silicon-power-transistor-high-power-audio)

## Best For

- nte electronics enthusiasts

## Why This Product

- Trusted nte electronics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Silicon Strength:** Built with NPN silicon for reliability and efficiency.
- • **Amp Up Your Sound:** Deliver a robust 30 amps for high-performance audio amplification.
- • **Unleash the Power:** Experience audio like never before with 100V capability!
- • **Lightweight Champion:** Weighing in at just 0.145 kg, it's power without the bulk.
- • **Versatile Applications:** Perfect for audio enthusiasts and professional setups alike.

## Overview

The NTE181 NPN Silicon Power Transistor is engineered for high power audio amplification, boasting a maximum voltage of 100V and a current capacity of 30 amps, all while maintaining a lightweight design of just 0.145 kilograms.

## Description

NTE Electronics NTE181 NPN Silicon Power Transistor, High Power Audio Amplifier, 100V, 30 Amp

## Features

- High power audio amplifier
- 100 volts
- 30 amps
- Package Weight : 0.145 kilograms

## Images

![NTE Electronics NTE181 NPN Silicon Power Transistor, High Power Audio Amplifier, 100V, 30 Amp - Image 1](https://m.media-amazon.com/images/I/61cYTxamu8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    very good.
  

*by D***E on Reviewed in the United States on November 11, 2022*

Works well under load

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Yep, that's what they are.
  

*by M***V on Reviewed in the United States on July 28, 2015*

Well, let's see .... I needed some replacements for a couple of RCA BA-74 Monitor Amplifiers (you want what??? those haven't been made in must be 40 years!), the original being RCA 40411. I ordered, they arrived. Price was .... well ..... let's call it reasonable. Since this is a review of the product, I'll describe what I received. Spec: Transistors. Yep, that's what they were. Spec: TO-3. Yep, TO-3. Spec: NPN. Yep, I'm pretty sure they are. Spec: Silicon. I have to assume they are. Not quite feeling like taking one apart to do a chemical analysis.In any case, I was having an issue with one of the amplifiers. It would periodically go into a low-frequency pulsing sort of along the lines of motorboating. It would get bad enough to pop the line fuse. Holy crap, man! Why are fuses so expensive? I had already replaced all the electrolytics so I assumed I had screwed up and/or had a bad one. But on another amplifier I had a bad transistor that was heat-sensitive. So I ordered the NTE-181's since for some dumb reason the original 40411's are a bit difficult to find. The replacements arrived and I popped them in. As is my habit, I brought the line voltage up slowly and .... rats. The pulsing was still there.So, loyal readers, today's lesson is that one does not use the same techniques to service transistorized equipment as is used for vacuum tube stuff. Bringing up the voltage slowly is just freakin' dandy in case of gross overloads or shorts. But it doesn't do squat as far as circuit operation is concerned. The manual called for 50 volts coming out of the power supply. Mine was running about 42 volts. Close enough for lots of stuff, but not in this case. I decided to up the input voltage to get the 50 volts and make some serious, yet quick DC measurements, before fuses started popping again. Lo and behold, at 50 volts all problems went away. The amplifier amplified, and quite nicely. Hindsight (always 20-20) tells me the internal feedback paths really depend on the power supply voltage being dead on. That's when I found the power transformer was connected for 125 VAC line voltage. Re-connecting it for 115 VAC brought the power supply voltage up to where it should be (my line voltage is typically 118 or so, measured true rms).So, back to the product review- I decided to put the original 40411's back in to see if they were functional and they were. The NTE-181's now reside in my spares collection. Let me add this: each transistor is packed with a mica insulating washer and insulating washers for the base and emitter leads. Nice touch. You have to understand back in the alleged good ol' days these things had to be ordered separately. So I'm a happy camper.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good
  

*by H***F on Reviewed in the United States on June 19, 2019*

Works

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-20*