RUEF300 TE Connectivity Switch (Other) In Stock
TE Connectivity RUEF300 is a radial leaded resettable PTC fuse with 3A hold current, 0.08Ω resistance, and 2W power dissipation rating. RoHS-compliant through-hole package provides overcurrent protection in consumer and industrial electronics. Available in stock worldwide with competitive pricing.
- Manufacturer
- TE Connectivity
- Package
- Other
- Pin Count
- 2
- Lifecycle
- TRANSFERRED
- Datasheet
- RUEF300 Datasheet PDF
- Category
- Switch
- Price
- From $0.2104(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of RUEF300?
- 3A hold current resettable PTC fuse eliminates the need for manual fuse replacement after tripping
- Ultra-low 0.08Ω resistance minimizes voltage drop and power loss in normal operating conditions
- 2W rated power dissipation with resistance range 0.020–0.050Ω for robust overcurrent protection
- Through-hole radial leaded package with RoHS/REACH-compliant Pb-free construction
What is RUEF300 used for?
The RUEF300 resettable PTC fuse is ideal for overcurrent protection in USB ports, battery chargers, and portable electronic devices where automatic recovery after a fault is required. Its 3A hold current and 0.08Ω low resistance make it suitable for protecting motor driver circuits and power distribution lines in industrial control panels. The through-hole radial package enables straightforward PCB assembly in both prototype and production environments.
What are the specifications of RUEF300?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 8Weeks |
| Additional Feature | RESISTANCE RANGE(MIN-MAX): 0.020-0.050 |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Package Shape | RECTANGULAR PACKAGE |
| Packing Method | BULK |
| Rated Power Dissipation (P) | 2W |
| Resistance | 0.08Ω |
| Resistor Type | PTC RESETTABLE FUSE |
| Surface Mount | NO |
| Terminal Finish | Tin (Sn) |
| Terminal Placement | RADIAL |
| Terminal Shape | WIRE |
| Thermistor Application | TEMPERATURE SENSING |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.40.80.70 |
Where can I find the RUEF300 datasheet?
RUEF300 Datasheet DownloadOfficial datasheet from TE Connectivity
What are equivalent replacements for RUEF300?
Compatible alternatives and drop-in replacements for RUEF300:
suggested
suggested
Frequently Asked Questions
What hold current and resistance does the RUEF300 provide for overcurrent protection circuits?
The RUEF300 provides a 3A hold current with a nominal resistance of 0.08Ω and a resistance range of 0.020–0.050Ω at room temperature. Its 2W power dissipation rating ensures it handles transient overloads effectively before tripping, making it suitable for USB hub and battery protection applications where sustained 3A current must pass without nuisance trips.
How does the RUEF300 resettable behavior compare to a one-time blade fuse in a USB power design?
Unlike a one-time blade fuse that must be physically replaced after an overcurrent event, the RUEF300 PTC fuse automatically resets to its low-resistance state (0.08Ω) once the fault is cleared and the device cools down. This self-resetting behavior eliminates maintenance downtime and reduces service costs in USB power hubs or charging stations handling up to 3A per port.
What lead time and package form should engineers expect when sourcing RUEF300 for production builds?
The RUEF300 has an 8-week factory lead time and ships in bulk packaging in a through-hole radial leaded form factor. Production planners should place purchase orders at least 10–12 weeks before the planned assembly date to buffer against supply chain variability, and verify that their PCB drill pattern matches the radial lead spacing for straight-through insertion.
In which temperature or environmental conditions does the RUEF300 maintain reliable PTC operation?
The RUEF300 is rated for operation across typical PTC fuse temperature ranges and is JESD-609 e3 Pb-free compliant, supporting reflow and wave solder processes up to lead-free peak temperatures. Its RoHS/REACH compliance ensures it meets environmental directives for consumer electronics, industrial, and telecommunications equipment operating at ambient temperatures up to 85°C.
Related Guides
ICL7660ACPAZ Negative Voltage Charge Pump Design Guide
Design a reliable ICL7660ACPAZ negative rail with capacitor equations, layout rules, startup checks, and practical troubleshooting.
Aug 2, 2026
C0402C103K3RACTU 10 nF MLCC Design Guide
Practical guidance for applying the C0402C103K3RACTU 10 nF, 25 V X7R MLCC in decoupling, filtering, timing, and EMI-control networks.
Aug 2, 2026
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
Why Buy from FindMyChip
About TE Connectivity
TE Connectivity is a leading electronic component manufacturer. FindMyChip sources TE Connectivity ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4725 | $0.47 |
| 12+ | $0.3938 | $4.73 |
| 26+ | $0.2269 | $5.90 |
| 5000+ | $0.2104 | $1052.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
MD06L1NCQD
C & K COMPONENTS
Switch
B3J-2100
Omron Electronics
Switch
ESE-13V01B
Panasonic
Switch
ESE-13V01D
Panasonic
Switch
ESE-13V01A
Panasonic
Switch
A6RS-102RF
Omron Electronics
Switch
SH-7010TB
Copal Electronics
Switch
SH-7050TB
Copal Electronics
Switch
KC1901A
E-Switch
Switch
SRBV141201
ALPS
Switch
ITR-9608
Everlight
Switch
MDSM-4R-12-18
LITTELFUSE
Switch
ADTS63RV
Apem
Switch
MC32860
MULTICOMP
Switch
ADTS648RV
Apem
Switch
EVP-BB4A9B000
Panasonic
Switch
EVP-BB2A9B000
Panasonic
Switch
RPI-246
ROHM Semiconductor
Switch
CUS-22TB
Copal Electronics
Switch
100SP1T2B4VS2QE
E-Switch
Switch
100SP1T2B4M6QE
E-Switch
Switch
200USP1T1A1M2RE
E-Switch
Switch
ATE1D-2M3-10-Z
Copal Electronics
Switch
100DP1T1B1M2QEH
E-Switch
Switch