EN
  • EN
  • DE
loading
Mfr. Part No. Qty. Price

No items in the cart

View Cart
Same model may have multiple batches, images only for reference.
RXEF300K-2 Littelfuse Inc.
Same model may have multiple batches, images only for reference.

RXEF300K-2

Part No RXEF300K-2
Manufacturer Littelfuse Inc.
Catalog PTC Resettable Fuses
Description PTC RESET FUSE 72V 3A RADIAL / Polymeric PTC Resettable Fuse 72V 3 A Ih Through Hole Radial, Disc
Sample
Rohs State rohs
ECAD Module
Need Help

Products specifications Report Issue?

Category Circuit Protection - PTC Resettable Fuses
Mfr Littelfuse Inc.
Series PolySwitch®, RXEF
Package Tape & Reel (TR)
Product Status Active
Type Polymeric
Voltage - Max 72V
Current - Hold (Ih) (Max) 3 A
Current - Trip (It) 6 A
Current - Max 40 A
Time to Trip 19.8 s
Resistance - Initial (Ri) (Min) 40 mOhms
Resistance - Post Trip (R1) (Max) 100 mOhms
Temperature Range - Operating -40°C ~ 85°C
Ratings -
Mounting Type Through Hole
Package / Case Radial, Disc
Size / Dimension 0.910" Dia x 0.118" T (23.11mm x 3.00mm)
Height - Seated (Max) 1.154" (29.30mm)
Thickness (Max) -
Lead Spacing 0.400" (10.15mm)
Approval Agency CQC, CSA, TUV, UL
MSL Level 1 (Unlimited)
ECCN EAR99
HTSUS 8533.40.8070
California Prop 65 Warning Information
Win Source Part Number 1361803-RXEF300K-2
Ultra Librarian 3D Model Ultra Librarian RXEF300K-2 CAD Model

Description

The PolySwitch® RXEF series is a PTC resettable fuse designed for circuit protection from Littelfuse Inc.

  • Current Rating: 40A
  • Voltage Rating: 72V
  • Temperature Range: -40°C to 85°C
  • Package: Radial, disc
  • Mounting Type: Through hole
  • Trip Current: 6A
  • Time to Trip: 19.8 seconds
  • Initial Resistance: 40 mOhms
  • Post-trip Resistance: 100 mOhms
  • Approvals: CQC, CSA, TUV, and UL
  • Size: 0.910" Dia x 0.118" T (23.11mm x 3.00mm)
  • Product Status: Active

You May Also Be Interested in

0ZCM0008FF2G Bel Fuse Inc. – Price, Stock & Datasheet
0ZCM0008FF2G
Bel Fuse Inc.
PTC RESET FUSE 15V 80MA 0603
Lowest to $0.1747
0ZRA0300FF2D Bel Fuse Inc. – Price, Stock & Datasheet
0ZRA0300FF2D
Bel Fuse Inc.
PTC RESET FUSE 16V 3A RADIAL
Need more? Email Us
0ZCF0110AF2A Bel Fuse Inc. – Price, Stock & Datasheet
0ZCF0110AF2A
Bel Fuse Inc.
PTC RESET FUSE 60V 1.1A 2920
Lowest to $0.6403
MF-LSMF200X-2 Bourns Inc. – Price, Stock & Datasheet
MF-LSMF200X-2
Bourns Inc.
2920 RESETTABLE SMD PPTC 2.0A/15
Lowest to $1.0216
B59960C0130A070 EPCOS (TDK) – Price, Stock & Datasheet
B59960C0130A070
EPCOS (TDK)
PTC RESET FUSE 80V 250MA RADIAL
Need more? Email Us
MF-RHT1300-2 Bourns Inc. – Price, Stock & Datasheet
MF-RHT1300-2
Bourns Inc.
PTC RESET FUSE 16V 13A RADIAL
Need more? Email Us
FRV075-240F RFE/Fuzetec – Price, Stock & Datasheet
FRV075-240F
RFE/Fuzetec
RESETTABLE FUSE - PPTC RADIAL LE
Lowest to $5.1557
Picture of RGEF700K
RGEF700K
Littelfuse Inc.
PTC RESET FUSE 16V 7A RADIAL
Need more? Email Us
RGEF1000-1 Littelfuse Inc. – Price, Stock & Datasheet
RGEF1000-1
Littelfuse Inc.
PTC RESET FUSE 16V 10A RADIAL
Need more? Email Us

Top Sellers

FT232RL-REEL Real Image
FT232RL-REEL
FTDI, Future Technology Devices International Ltd
IC USB FS SERIAL UART 28-SSOP
Lowest to $5.9399
FT4232HL-REEL real image4451
FT4232HL-REEL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $13.7805
EPM3128ATC100-10N real image
EPM3128ATC100-10N
Altera
IC CPLD 128MC 10NS 100TQFP
Lowest to $3.3015
FT234XD-R real image
FT234XD-R
FTDI, Future Technology Devices International Ltd
USB-to-UART 1-CH 512byte FIFO 5V 12-Pin DFN EP T/R / IC USB SERIAL BASIC UART 12DFN
Lowest to $4.2292
BMM150 label picture
BMM150
Bosch Sensortec
SENSOR FLIPCORE/HALL SPI 12WLCSP / Geomagnetic Sensor
Lowest to $0.7128
PE4312C-Z label picture
PE4312C-Z
Peregrine Semiconductor
RF ATTENUATOR 31.5DB 50OHM 20QFN
Lowest to $1.6632
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
FT230XQ-R real image21397
FT230XQ-R
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16QFN
Lowest to $5.9399
BAS516 Real Image
BAS516
Nexperia USA Inc.
DIODE GEN PURP 100V 250MA SOD523
Lowest to $0.0357
BM06B-GHS-TBT(LF)(SN)(N) Real Image2
BM06B-GHS-TBT(LF)(SN)(N)
JST Sales America Inc.
CONN HEADER SMD 6POS 1.25MM
Lowest to $0.5279
SSD1963QL9 real image6483
SSD1963QL9
Solomon
LCD Display Controller 128-Pin LQFP Tray
Lowest to $4.5619
FT230XS-R real image4301
FT230XS-R
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16SSOP
Lowest to $5.8211
ULN2803ADW Real Image
ULN2803ADW
Texas Instruments
DARLINGTON TRANSISTOR ARRAY | TRANS 8NPN DARL 50V 0.5A 18SO
Lowest to $5.9399
NTA4153NT1G real image4110
NTA4153NT1G
ON Semiconductor
MOSFET N-CH 20V 915MA SOT-416
Lowest to $0.0543
BMI088 real image23913
BMI088
Bosch Sensortec
ACCELEROMETER 16LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $14.6617
Availability: Check Availability & Quote
Notify Me When Available

Shipping Information

Shipped from HK warehouse
Expected Shipping Date Get an estimate

Contact Us

*
*
*

FRAUD PREVENTION REMINDERS

Recently, We have discovered that criminals falsely claimed to be WIN SOURCE to commit fraud. Please note that the only official website & email suffix are win-source.group, win-source.net, winsourcectl.com and winsourceelec.com

More details about fraud prevention
About Us
Customer Service
Solutions
Copyright © 2026 WIN SOURCE. All rights reserved.
For detailed contact information and office addresses in our key locations, including Irvine, Munich, Toronto, Singapore, Seoul, Bangalore, Bologna, Yamanashi, Hong Kong, and Mainland China, please visit our website.
Trust Guard Security Scanned
RFQ RFQ RFQ BOM BOM BOM API API API Sell Sell Sell your Excess