Description
PTF/77B PCB Fuse Holders, Clips and Accessories Full Guide
1. Product Model: PTF/77B Pcb Fuse holders, clips and accessories
2. Material: PA66 (Black)
3. Contact: Brass (H65)
4. 10A 250Vac (TUV, UL, CQC, CE)
10A 1000Vdc (UL)
5. Compatible with: 5×20 fuses
Note: For accessories, please refer to the product dimensional drawing.
PTF/77B PCB Fuse Holders, Clips and Accessories
PTF/77B series are professional through-hole PCB mount fuse components, including fuse holders, clips and supporting accessories, specially designed for 5x20mm cartridge fuses. With stable performance, compact structure and safe design, this series has become a preferred choice for overcurrent protection in printed circuit board applications, widely used in various electronic and electrical equipment.
Overview of PTF/77B Series Components
The PTF/77B series forms a complete PCB fuse installation system, covering three core parts to meet different PCB layout and protection needs.
- PTF/77B PCB Fuse Holders: Integrated base-type components, with fixed pin structure for direct soldering on PCB, providing stable fuse installation and reliable electrical connection.
- PTF/77B Fuse Clips: Elastic contact clips, simple structure, low-cost solution for clamping 5x20mm fuses, suitable for space-limited PCB circuits.
- Matching Accessories: Special protective covers, fixed terminals, insulation gaskets and other parts, enhancing installation stability and safety performance.
Core Specifications of PTF/77B Series
- Compatible Fuse Size: 5x20mm glass/ceramic cartridge fuses
- Rated Current: 6.3A-10A 250V AC
- Pin Pitch: 15mm standard PCB hole distance
- Installation Type: Through-hole (THT) soldering
- Shell Material: Flame-retardant PA66/Phenolic plastic, high temperature resistance
- Contact Material: Nickel-plated brass, excellent conductivity, low contact resistance
- Certifications: Comply with UL, CE, CQC safety standards, RoHS compliant
Key Features of PTF/77B PCB Fuse Components
1. Excellent PCB Compatibility
Standard pin pitch and through-hole design perfectly match conventional PCB processing, compatible with automated soldering production, easy to install and fix, no extra modification needed.
2. Stable Electrical Performance
Low contact resistance design effectively reduces temperature rise during long-term operation; high-quality conductive materials ensure stable current transmission, avoiding poor contact and abnormal heating.
3. High Safety Performance
Flame-retardant insulating shell effectively isolates electric arcs and prevents electric leakage; matching protective accessories block dust and foreign matters, improving overall safety of circuit protection.
4. Strong Environmental Adaptability
Wide working temperature range, resistant to high and low temperature, vibration and oxidation, suitable for various working environments of electronic equipment, long service life.
5. Flexible Application Options
Optional holders and clips meet different space and cost requirements; complete accessories support diversified installation schemes, adaptable to multiple electronic circuit designs.
Main Applications
PTF/77B PCB fuse holders, clips and accessories are widely used in diversified electronic and electrical fields:
- Switching power supplies and adapters
- Household appliances (TV, air conditioner, kitchen appliances)
- Industrial control boards and instrument equipment
- Automotive electronic modules and lighting circuits
- Communication equipment and consumer electronics
- Solar controllers and small power storage devices
Matching Accessories Details
- Protective Cover: Insulating plastic cover, dustproof and anti-electric shock, compatible with PTF/77B holder, easy to disassemble for fuse replacement.
- Fixed Terminals: Reinforce the connection between holder and PCB, enhance anti-vibration performance, prevent pin loosening.
- Insulation Gaskets: Isolate holder and PCB board, avoid short circuit risks, improve insulation performance.
- Replacement Clips: Spare elastic clips for later maintenance and replacement of worn parts.
Installation Tips
- Confirm PCB hole distance matches PTF/77B series pin pitch before soldering.
- Use standard through-hole soldering process to ensure firm welding and avoid virtual welding.
- Select matching 5x20mm fuses according to circuit rated current and voltage.
- Install protective accessories after completion of soldering to improve safety.
FAQ
What fuses are compatible with PTF/77B PCB fuse holders?
PTF/77B series are specially designed for 5x20mm glass and ceramic cartridge fuses, with perfect size matching.
What is the rated current and voltage of PTF/77B series?
The conventional rated parameter is 6.3A-10A, 250V AC, meeting the overcurrent protection needs of most small and medium-sized electronic circuits.
Can PTF/77B clips replace holders?
Fuse clips are more cost-effective and space-saving, but holders have better stability and safety; choose according to PCB space and circuit safety requirements.
Are PTF/77B series RoHS compliant?
Yes, all PTF/77B PCB fuse components comply with RoHS environmental protection standards, and meet global electronic product safety requirements.