Each subsystem making up a video doorbell requires overcurrent, overvoltage, and ESD protection. Littelfuse delivers, as seen in this block


The 250 NANO2 Fuse is a small square surface mount fuse that is designed to support higher voltage space sensitive applications. Enables compliance with the RoHS directive and is fully compatible with lead-free solder alloy and higher temperature profiles associated with lead-free assembly.
- 250 V rating
- Available with ampere ratings from 500 A to 5 A
- Time Lag
- RoHS compliant
- Fully compatible with lead free solder alloys and higher temperature profiles associated with lead free assembly
443 Parts
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Showing 1 to 10 of 10 Total Results
Part Number | Actions | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Body | MSL | Opening | Operating Temperature | Agency Approvals |
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Part Number | Actions | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Body | MSL | Opening | Operating Temperature | Agency Approvals | |
---|---|---|---|---|---|---|---|---|---|---|
250 | 1.61 | 0.6 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / K / UKCA / TUV | |||
250 | 3.025 | 0.275 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / UKCA / CE / K / TUV | ||||
250 | 14.72 | 0.1 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / METI / UKCA / TUV / K | |||
250 | 18.13 | 0.035 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / UKCA / TUV / K / CE / METI | |||
250 | 53.14 | 0.019 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / UKCA / K / TUV / METI | |||
250 | 10.17 | 0.18 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / UKCA / K / METI / TUV | |||
250 | 18.06 | 0.052 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / UKCA / K / METI / TUV | |||
250 | 51.44 | 0.028 | Ceramic | Level 1 | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / UKCA / TUV / K / METI | |||
250 | 122.5 | 0.016 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / UKCA / K / CE / METI / TUV | ||||
250 | 180.6 | 0.0115 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / TUV / UKCA / METI / K |
443 Applications

Video Doorbells
Highlights Section
- AC/DC power adaptor
- Telecom equipment system power
- Portable system built-in AC/DC converter
- Lighting system