---
product_id: 12793506
title: "50 Pack - 27mm Piezo Discs with 3-Lead Wires for Hartley Oscillator/Buzzer/Alarm Circuit/Feedback Loop"
brand: "audiowell"
price: "₨843"
currency: SCR
in_stock: true
reviews_count: 1
category: "Audiowell"
url: https://www.desertcart.sc/products/12793506-50-pack-27mm-piezo-discs-with-3-lead-wires-hartley
store_origin: SC
region: Seychelles
---

# 20,000pF capacitance at 1KHz 4.6KHz resonant frequency precision 3-lead design with feedback electrode 50 Pack - 27mm Piezo Discs with 3-Lead Wires for Hartley Oscillator/Buzzer/Alarm Circuit/Feedback Loop

**Brand:** audiowell
**Price:** ₨843
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your circuits with precision buzz—don’t get left silent!

## Quick Answers

- **What is this?** 50 Pack - 27mm Piezo Discs with 3-Lead Wires for Hartley Oscillator/Buzzer/Alarm Circuit/Feedback Loop by audiowell
- **How much does it cost?** ₨843 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/12793506-50-pack-27mm-piezo-discs-with-3-lead-wires-hartley)

## Best For

- audiowell enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Usage Modes:** Use as a standard piezo disc by simply disconnecting the blue lead—flexibility at your fingertips.
- • **Durable Brass & Ceramic Build:** Premium materials guarantee longevity and reliable performance in demanding environments.
- • **Plug-and-Play with Long Leads:** Includes 3.93" (100mm) leads for easy installation in any project or prototype.
- • **Innovative 3-Lead Feedback Design:** Unique third lead enables advanced feedback loops for smarter circuit integration.
- • **Precision Resonance for Clear Signals:** Optimized 4.6KHz ±0.5KHz frequency ensures crisp buzzer and alarm tones.

## Overview

This 50-pack of 27mm piezo discs features a 3-lead design with a dedicated feedback electrode, resonating at 4.6KHz ±0.5KHz and boasting 20,000pF capacitance at 1KHz. Crafted from brass and ceramic, each disc includes 3.93" leads for easy integration into buzzers, alarms, and feedback circuits, offering versatile use for both standard and advanced electronic applications.

## Description

These 27mm discs feature a feedback electrode and 3.93" (100mm) leads. Feedback Electrodes are used to construct buzzers, but do not have to be used. To use these in the more conventional sense (pickups, mics, etc..), simply leave the blue lead disconnected. Resonant Frequency 4.6KHz. Resonant Resistance 300 ohm max. Capacitance 16,000pF +/- 30%.

Review: Great Product - GREAT PRODUCT Install easily, WORK GREAT

## Features

- 3 Lead Piezo discs are used to construct Buzzers/Alarms
- The "3rd Lead" is on the Feedback Electrode
- Can be used as a standard piezo disc (eliminate blue connection)
- Resonant Frequency: 4.6KHz +/- 0.5KHz
- Capacitance @ 1KHz: 20,000pF

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DH2V494 |
| Best Sellers Rank | #252,837 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Piezo Transducers |
| Body Material | Brass |
| Color | Brass |
| Connector Type | 1/4" jack |
| Customer Reviews | 5.0 out of 5 stars 1 Review |
| Included Components | 3 Lead Piezo discs, 3.93" (100mm) leads |
| Manufacturer | Audiowell |
| Material | Brass, Ceramic, Copper Wire |
| Model Number | gddsg187 |
| Part Number | AW-PZT273L |

## Product Details

- **Body Material:** Brass
- **Color:** Brass
- **Included Components:** 3 Lead Piezo discs, 3.93" (100mm) leads
- **Manufacturer:** Audiowell
- **Material:** Brass, Ceramic, Copper Wire

## Images

![50 Pack - 27mm Piezo Discs with 3-Lead Wires for Hartley Oscillator/Buzzer/Alarm Circuit/Feedback Loop - Image 1](https://m.media-amazon.com/images/I/91KkrLBI-8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Product
*by T***8 on August 29, 2016*

GREAT PRODUCT Install easily, WORK GREAT

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sc/products/12793506-50-pack-27mm-piezo-discs-with-3-lead-wires-hartley](https://www.desertcart.sc/products/12793506-50-pack-27mm-piezo-discs-with-3-lead-wires-hartley)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-07-07*