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| PartNumber | YQS8121 | YQS8123 | YQS8120 |
| Description | Thermistors - PTC 265Vrms 120ohm YM120 -/+20% | Thermistors - PTC Standard PTC -/+30% | Thermistors - PTC PTC Thermistor 20% Tol |
| Manufacturer | Amphenol Advanced Sensors | AMPHENOL ADVANCED SENSORS | Amphenol Advanced Sensors |
| Product Category | PTC Resettable Fuses | PTC Resettable Fuses | PTC Resettable Fuses |
| Series | YQ | YQ | YQ |
| Packaging | Bulk | Bulk | Bulk |
| Current Rating | 35 mA | 250 mA | 21 mA |
| Termination Style | Radial | Radial | Radial |
| Operating Temperature Range | 0 C to + 60 C | 0 C to + 60 C | 0 C to + 60 C |
| Package Case | Radial, Disc | Radial, Disc | Radial, Disc |
| Tolerance | 25 % | 25 % | 25 % |
| Current Max | - | 1A | 200mA |
| Current Hold Ih Max | 35mA | 250mA | 21mA |
| Voltage Max | 265V | 30V | 420V |
| Current Trip It | 80mA | 500mA | 39mA |
| R Min Max | - | - | - |
| Time to Trip | - | - | - |
| Resistance | 120 Ohms | 4.6 Ohms | 600 Ohms |
| Type | - | - | PTC |
| Length | - | - | 5 mm |
| Voltage | - | - | 420 V |
| Lead Spacing | - | - | 5 mm |
| Diameter | - | - | 6.5 mm |
| Lead Diameter | - | - | 0.6 mm |
