DistyParts Icon
250R120ZR Littelfuse 250R120ZR PolySwitch PTC resettable fuse with 120mA hold current, 240mA trip current, 250VAC interrupt rating, and 60VDC operating voltage in a radial disc package.
Mfr Part #:

250R120ZR

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse 250R120ZR PolySwitch PTC resettable fuse with 120mA hold current, 240mA trip current, 250VAC interrupt rating, and 60VDC operating voltage in a radial disc package.
✓ Total Stock: 1,000 pcs
$ Price Range: $0.43 - $0.94

250R120ZR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

250R120ZR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Halogen Free
Height
Industrial Grade
Lead Spacing
Lead Style
Length
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Package / Case
Resistance
SVHC Present
Time to Trip
Type
Voltage
Width
View Similar Products (0)

250R120ZR Description

Short technical summary and product information.

The Littelfuse 250R120ZR is a PolySwitch polymeric PTC resettable fuse from the 250R series, designed for overcurrent protection in telecom applications. It offers a hold current of 120 mA at 20°C still air and a trip current of 240 mA. The device can interrupt fault currents up to 3 A at 250 VAC and operates at a maximum voltage of 60 VDC.

 

Key electrical characteristics include a typical power dissipation of 1 W in the tripped state and a maximum time to trip of 2.5 seconds at 1 A. Initial resistance ranges from 4 Ω minimum to 16 Ω maximum, with a typical value of 8 Ω. After tripping, the maximum resistance is 16 Ω.

 

The component is housed in a through-hole radial disc package with a lead spacing of 5.10 mm. Dimensions are 6.50 mm length, 4.60 mm width, and 11.00 mm height. It operates over a temperature range of -40°C to 85°C. The device is RoHS compliant, lead-free, and halogen-free.

250R120ZR Quick Information

Product Type: PTC Resettable Fuse
Series: 250R
Canonical Name: Littelfuse 250R Series PolySwitch PTC Resettable Fuse, 120mA Hold, Radial Disc
Subcategory: Radial Leaded PTC

250R120ZR Compliance

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

250R120ZR Estimated Pricing

Qty Low High
1+ $0.94 $0.94
10+ $0.79 $0.79
50+ $0.70 $0.70
100+ $0.67 $0.67
250+ $0.60 $0.60
500+ $0.55 $0.55
1,200+ $0.47 $0.47
2,400+ $0.43 $0.43

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

250R120ZR Features

  • 120 mA hold current at 20°C still air.
  • 240 mA trip current at 20°C still air.
  • 250VAC interrupt rating, 60VDC operating voltage.
  • Through-hole radial disc package with 5.10mm lead spacing.
  • RoHS compliant, lead-free, and halogen-free.

250R120ZR Applications

  • Used in telecom customer premises equipment (CPE).
  • Protects central office and telecom center equipment.
  • Suitable for LAN/WAN networking equipment.
  • Ideal for access equipment overcurrent protection.

250R120ZR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the 250R120ZR?

The hold current is 120 mA at 20°C still air.

What is the trip current of the 250R120ZR?

The trip current is 240 mA at 20°C still air.

What is the maximum voltage rating?

The interrupt rating is 250 VAC and the operating voltage is 60 VDC.

What is the maximum fault current?

The maximum fault current is 3 A.

What is the time to trip?

The maximum time to trip is 2.5 seconds at 1 A, 20°C still air.

What is the package type?

The package is a through-hole radial disc with 5.10 mm lead spacing.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

Home
Account

Categories