F4000 series, glassOTO 5×20 fuse 
- Glass tube with nickel plated caps
- IEC 127 Standard sheet II for fast acting fuses, 100mA up to 6.3A
- Marked with voltage and current rating
- Cap enclosed solder joints
| iMaXX ref. | Rating [A] | |
| F4100 | 0.10 | |
| F4200 | 0.20 | |
| F4250 | 0.25 | |
| F4300 | 0.30 | |
| F4400 | 0.40 | |
| F4500 | 0.50 | |
| F4800 | 0.80 | |
| F4001 | 1 | |
| F4001.25 | 1.25 | |
| F4001.6 | 1.60 | |
| F4002 | 2 | |
| F4002.5 | 2.50 | |
| F4003 | 3.15 | |
| F4004 | 4 | |
| F4005 | 5 | |
| F4006 | 6.30 | |
| F4008 | 8 | |
| F4010 | 10 | |
| F4012 | 12 | |
| F4015 | 15 | |
| F4016 | 16 | |
| F4020 | 20 | |
