PTF-77B PCB Mount Fuse Holder for 5x20mm Tube Fuses
The PTF-77B PCB fuse holder is a through-hole mount socket for 5x20mm glass and ceramic tube fuses, rated 0.1-10A at 125V/250V AC/DC. It features a PBT UL94-V0 housing with brass contacts. TUV and cULus certified. For fuse selection guidance, visit https://www.iec.ch/. Compare pin styles with related model PTF-77.
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PTF-77B PCB Mount Fuse Holder for 5x20mm Tube Fuses
What Is the PTF-77B?
The PTF-77B is a through-hole PCB mount fuse holder for 5x20mm glass and ceramic tube fuses. It accepts current ratings from 0.1A to 10A at either 125V or 250V AC/DC. The body uses PBT material rated UL 94 V0, and the contacts are brass for reliable spring pressure.
PTF-77B vs PTF-77: What’s the Difference?
Both models share identical outer dimensions and electrical ratings. They differ only in the PCB solder pin configuration:
| Feature | PTF-77B | PTF-77 |
|---|---|---|
| Mounting style | Through-hole PCB pins | Alternative pin layout |
| Outer body | Same 5x20mm cavity | Same 5x20mm cavity |
| Ratings | 0.1-10A, 125V/250V AC/DC | 0.1-10A, 125V/250V AC/DC |
| Housing | PBT, UL 94 V0 | PBT, UL 94 V0 |
| Contact material | Brass | Brass |
| Certifications | TUV, cULus | TUV, cULus |
Choose the pin style that matches your PCB footprint. If you are designing a new board, our engineering team can confirm which pin layout fits your land pattern.
Electrical and Mechanical Specifications
- Fuse size: 5 x 20 mm
- Current range: 0.1A to 10A
- Voltage: 125V / 250V AC/DC
- Power acceptance: 1.6W (at 250V)
- Housing: PBT, UL 94 V0
- Contact material: Brass
- Mounting: Through-hole PCB
- Certifications: TUV, cULus
- Body colour: Black
Typical Applications
- Consumer electronics power boards
- LED driver circuits
- Industrial control PCBs
- Adapter and charger input protection
- Audio equipment PCB-level fuse protection
Datasheet
[Download PTF-77B specification sheet (PDF)]
For alternative pin configurations, see related model: PTF-77B PCB fuse holderPTF-77 PCB fuse holder
FAQ
1: What is the difference between PTF-77B and PTF-77?
A: They share the same body, dimensions, and electrical ratings. The only difference is the PCB solder pin layout.
2: What size fuse does it accept?
A: Standard 5x20mm glass or ceramic tube fuses.
3: What is the current range?
A: 0.1A to 10A at 125V or 250V AC/DC.
4: What certifications does it carry?
A: TUV and cULus.
5: Is the housing flame retardant?
A: Yes, the PBT body is rated UL 94 V0
