5x20mm PCB‑Mount Fuse Holder | 6.3A Flip‑Open PA66 Fuse Accessories
Industrial‑grade flip‑open PCB‑mount fuse holder for 5×20mm glass & ceramic cartridge fuses, black PA66 UL94 V0 flame‑retardant housing, tinned brass contacts, max 6.3A 250V AC/DC, wide‑range‑25℃ ~ +125℃ operating temperature, through‑hole soldering design for power adapters, household appliances and instrument PCB over‑current‑protection accessories.
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PCB‑mount fuse holder for 5x20mm cartridge fuses is a flip‑open through‑hole soldered circuit‑protection component for consumer and industrial PCBA. This fuse holder adopts high‑performance black PA66 (Nylon) UL94 V0 flame‑retardant housing together with reliable tinned brass contact terminals. Its unique flip‑open lid design allows convenient fuse replacement without desoldering from PCB board. Widely used in power adapters, household appliances, test instruments and general‑purpose electronic control printed‑circuit‑boards.
Core Product Features
- Compatible with standard 5 × 20 mm glass / ceramic tubular cartridge fuses for PCB‑level over‑current‑protection
- Electrical rating: max 6.3A, 250V AC/DC for small‑medium‑power electronic‑equipment circuits
- Housing material: PA66 Nylon, UL94 V‑0 flame‑retardant grade; standard black color
- Contact terminals: tinned brass material, good conductivity and anti‑oxidation for long‑term stable conduction
- Flip‑open cover structure, quick fuse replacement without removing the holder from PCB
- Wide operating temperature range:‑25 ℃ ~ +125 ℃, adapts to PCB local temperature‑rise conditions
- Through‑hole PCB soldering mounting design, fits conventional wave‑soldering mass‑production workflows
- RoHS‑compliant construction, meets global consumer‑electronics environmental‑protection requirements.
Different from ordinary closed‑type PCB fuse clips, this flip‑open‑lid variant brings huge convenience for fuse maintenance on finished PCBA. PA66 nylon material delivers excellent mechanical strength and heat‑resistance, which is widely adopted for adapter and consumer‑electronic projects.
Full Technical Specifications
| Specification Item | Parameter Value |
|---|---|
| Model | BLX‑A |
| Compatible Fuse | 5 × 20 mm glass / ceramic tubular cartridge fuse |
| Max Rated Current | 6.3A |
| Rated Voltage | 250V AC / DC |
| Housing Material | PA66 Nylon, UL94 V0 flame‑retardant |
| Standard Housing Color | Black |
| Contact Terminal Material | Tinned brass |
| Operating Temperature Range | ‑25 ℃ ~ +125 ℃ |
| Special Structure | Flip‑open lid for quick fuse replacement |
| Mounting Method | Through‑hole PCB soldering mount |
Note: Original drawing datasheet does not provide contact resistance, insulation resistance and withstand‑voltage parameters.
Selection & Application Guidance
When selecting this flip‑open PCB‑mount fuse holder for 5×20 mm fuses, confirm fuse dimension, system AC‑DC voltage and continuous operating‑current first. Select matching‑rating 5x20mm tubular fuses and reserve a 1.25‑1.5× safety margin to avoid over‑heating under continuous‑load. The flip‑open‑cover design is preferred for products requiring convenient on‑board fuse‑replacement. Follow official dimension drawing for PCB pad layout to guarantee soldering reliability and stable contact performance.
Typical Application Scenarios
- Power‑adapter and small switching‑power‑supply PCBA fuse accessories
- Household‑appliance control‑board and consumer‑electronics protection circuits
- Test instruments, multimeters and laboratory small‑power circuit‑boards
- Communication‑equipment auxiliary power‑input protection accessories
- LED power‑drivers and low‑power lighting‑control PCBA
- Small‑industrial‑automation module PCB over‑current‑protection accessories
Installation & Maintenance Instructions
1. Select correct‑rating 5 × 20 mm glass / ceramic tubular cartridge fuse according to circuit‑protection requirements.
2. Design PCB through‑hole pads strictly follow official dimension drawing to ensure soldering compatibility.
3. Complete wave‑soldering or manual‑soldering with proper temperature and dwell‑time; avoid over‑heat damage to PA66 nylon housing.
4. Open flip‑open lid, insert tubular fuse fully into cavity then close lid for reliable electrical contact.
5. Do not operate beyond published rated voltage‑current limits to prevent insulation breakdown and safety hazards.
6. Cut‑off full power supply and discharge circuit before fuse replacement to prevent electric‑shock hazard; fuse can be changed by opening flip‑lid without desoldering.
7. Periodically inspect for loose fuse, contact‑clip oxidation or heating signs; replace components promptly when anomalies are found.
Frequently Asked Questions
Q1: What fuse size fits this BLX‑A pcb fuse holder?
A1: It fits standard 5 × 20 mm glass and ceramic tubular cartridge fuses, widely‑used for consumer‑electronic PCB‑level over‑current‑protection.
Q2: What are electrical ratings for this pcb fuse holder?
A2: Max rated current 6.3A; rated voltage 250V for both AC and DC circuits.
Q3: What is housing material and special‑structure feature?
A3: Black PA66 Nylon housing with UL94 V‑0 flame‑retardant grade; unique flip‑open lid allows fuse swap without desoldering PCB joints.
Q4: What is operating‑temperature range?
A4: Wide operating‑temperature from‑25 ℃ up to +125 ℃, suitable for PCB boards with local heat‑rise.
Q5: What mounting type is adopted?
A5: Through‑hole PCB soldering mount, compatible with wave‑soldering mass‑production for printed circuit boards.
Q6: What are main typical‑application‑fields?
A6: Mainly used for power adapters, household appliances, test instruments, LED drivers, communication‑equipment and various low‑voltage PCB‑based over‑current‑protection circuits.
