Product Overview
Wickmann TR5 Slow-Blow Fuse 1A 250V – Unused, New Old Stock
The Wickmann Littelfuse TR5 is a compact, time-delay fuse designed for printed circuit boards requiring stable, reliable overcurrent protection. Trusted for decades in industrial and consumer electronics, it continues to meet global safety standards.
Product Condition
Unused, New Old Stock (NOS). Kept in original packaging and stored in a controlled environment. Free of corrosion or lead oxidation; ready for immediate soldering or plug-in installation.
Product Overview
Originally produced under the Wickmann name—later part of Littelfuse—the TR5 series represents German-engineered precision in miniature circuit protection. Its time-delay response and compact footprint make it a mainstay for engineers designing within tight board layouts.
Key Features
- Rated current: 1A at 250VAC
- Time-delay (slow-blow) action tolerates short current surges
- Subminiature radial-lead design for PCB mounting
- Low internal resistance for minimal voltage drop
- RoHS compliant, lead-free, and halogen-free construction
- Shock-safe casing with vibration resistance
- Direct solder or plug-in versions available
- Operating temperature range: -40°C to +85°C
- Breaking capacity: up to 35A at 250VAC
- UL, CSA, VDE, IEC, and CE certified
Applications
- Power supply and charger protection
- Industrial control boards
- Instrumentation and metering circuits
- Telecom and networking equipment
- Audio and video electronics
- Embedded and test hardware design
- General-purpose circuit protection
Frequently Asked Questions
What makes the TR5 series different from standard fuses?
Its time-delay element tolerates inrush currents during startup, preventing nuisance tripping in inductive or capacitive loads.
Is the TR5 fuse interchangeable with other Littelfuse models?
Yes—TR5 fuses share common form factors and can replace equivalent slow-blow Littelfuse or Wickmann designs when ratings match.
Can this fuse be wave-soldered?
Yes, its lead design and heat tolerance allow standard soldering processes without degrading fuse integrity.
Are these compliant with RoHS and international standards?
Absolutely—each unit meets UL, CSA, VDE, and IEC certifications, ensuring global acceptance.
Why is this model valued by engineers today?
Despite its compact form, it provides dependable protection and a track record proven in industrial and consumer applications.
A hallmark of Wickmann and Littelfuse engineering, this fuse bridges eras of precision design—now ready to serve in it your next creation.
