YS4020 YS4020 is a ceramic PTC thermistor from Amphenol Thermometrics, rated at 1.1kΩ (25°C) with 80°C switching temperature and 1000Vrms maximum voltage. Designed for current limiting protection in through-hole radial disc package.
Mfr Part #:

YS4020

Available from 1 distributors
Mfr Name: Amphenol Thermometrics
Amphenol Thermometrics
YS4020 is a ceramic PTC thermistor from Amphenol Thermometrics, rated at 1.1kΩ (25°C) with 80°C switching temperature and 1000Vrms maximum voltage. Designed for current limiting protection in through-hole radial disc package.
✓ Total Stock: 8 pcs
$ Price Range: $3.09 - $3.92

YS4020 Available from 1 distributor

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✓ Non-Authorised
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YS4020 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Construction
Height
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Resistance
Storage Temperature
Switching Temperature
Tape & Reel
Termination
Type
Voltage

YS4020 Description

Short technical summary and product information.

The YS4020 is a ceramic PTC (Positive Temperature Coefficient) thermistor manufactured by Amphenol Thermometrics, intended for use as a current limiting protection device. It features a nominal resistance of 1.1kΩ at 25°C (measured at 1mA) with ±20% tolerance, and a switching temperature of 80°C ±10°C.

 

This device is rated for a maximum voltage of 1000Vrms and can handle a typical inrush current of 0.6A rms (with 1.0kΩ series resistance). The maximum residual current at rated voltage is 2.0mA. It operates over a temperature range of -20°C to +60°C and can be stored from -25°C to +125°C.

 

The YS4020 is constructed as a bare ceramic disc with thick film silver electrodes and uninsulated tin-coated copper leadwires. It is supplied in a radial, disc package with 7.50mm lead spacing and a maximum height of 12.00mm. The disc diameter is 8.00mm with a thickness of 6.00mm.

YS4020 Quick Information

Product Type: PTC Resettable Fuse
Series: YS4020
Canonical Name: YS4020 PTC Thermistor, 1.1kΩ, 80°C Switching, 1000Vrms, Radial Disc
Subcategory: Current Limiting Protection Device

YS4020 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

YS4020 Estimated Pricing

Qty Low High
1+ $3.92 $3.92
5+ $3.76 $3.76
10+ $3.62 $3.62
25+ $3.54 $3.54
50+ $3.49 $3.49
250+ $3.38 $3.38
500+ $3.27 $3.27
1,000+ $3.09 $3.09

Estimated market price range - modelled values for guidance only, not live distributor offers.

YS4020 Features

  • Ceramic PTC thermistor for current limiting.
  • 1.1kΩ resistance at 25°C with ±20% tolerance.
  • 80°C switching temperature with ±10°C tolerance.
  • Rated for 1000Vrms maximum voltage.
  • Radial disc package with 7.50mm lead spacing.

YS4020 Applications

  • Overcurrent protection in power supplies.
  • Overtemperature sensing and protection circuits.
  • Current limiting in high-voltage applications.
  • Inrush current suppression in AC/DC converters.

YS4020 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the resistance of the YS4020 at 25°C?

The nominal resistance at 25°C is 1.1kΩ with ±20% tolerance, measured at 1mA.

What is the switching temperature of the YS4020?

The switching temperature is 80°C ±10°C.

What is the maximum voltage rating of the YS4020?

The maximum voltage rating is 1000Vrms.

What is the operating temperature range of the YS4020?

The operating temperature range is -20°C to +60°C.

What package does the YS4020 come in?

The YS4020 is supplied in a radial, disc package with 7.50mm lead spacing and through-hole mounting.

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