---
product_id: 184234226
title: "BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black"
brand: "bnfuk"
price: "$5.16"
currency: USD
in_stock: false
category: "Diy"
url: https://www.desertcart.us/products/184234226-bnfuk-20d-20-ntc-thermistor-for-limiting-of-inrush-current
store_origin: US
region: United States of America
---

# BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black

**Brand:** bnfuk
**Price:** $5.16
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black by bnfuk
- **How much does it cost?** $5.16 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/184234226-bnfuk-20d-20-ntc-thermistor-for-limiting-of-inrush-current)

## Best For

- bnfuk enthusiasts

## Why This Product

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

## Description

BNFUK 20D-20 NTC Thermistor for limiting of inrush current of power supply ballast CFL,blackColour:blackmaterial:metalpackage contents:1*thermistorNote: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

## Features

- WMF21 series thermistors are used for limiting the Inrush Current in the power supply loop of every kinds of power supply, ballast / CFL etc. and the heating loop of CRT of color TV / monitor, heater, filament etc.
- The temperature is decreased while the Material Consistent(B) of thermisters is increasing and the Remain Resistance is decreasing. The higher is the Thermal Capacity, the stronger is the capability of limiting the Inrush Current. It is direct proportion to the product of the Thermal Time Constant (T) and Thermal Dissipation Constant (d) .
- The WMF21 series thermistors is the radial leads resin coating type products, it has the characteristic of small bulk, high power, strong limiting of inrush current, quick response, long life, high reliability, etc.
- The WMF21 series thermistors has so wide application area, which is mainly used in Switching Power Supply, UPS Power Supply, CFL, Ballast, Circuitry of Power Supply, etc.
- ›See more product details

## Images

![BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black - Image 1](https://images-na.ssl-images-amazon.com/images/I/51mglI1Fi3L.jpg)
![BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black - Image 2](https://images-na.ssl-images-amazon.com/images/I/51Pd1BH%2BdkL.jpg)
![BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black - Image 3](https://images-na.ssl-images-amazon.com/images/I/51p6UXVSvqL.jpg)
![BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black - Image 4](https://images-na.ssl-images-amazon.com/images/I/61gY2FViwOL.jpg)
![BNFUK 20D-20 NTC Thermistor for limiting of Inrush Current of Power Supply Ballast CFL,Black - Image 5](https://images-na.ssl-images-amazon.com/images/I/51g4C8iuyVL.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-20*