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| PartNumber | GTCR37-551M-R10 | GTCR37-551M-P10 | GTCR37-551M-P10-FS |
| Description | Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 7MM 550V 3POLE RADIAL LEADS GDT | Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 550VDC Spark +-20% 130AC Discharge 50Hz | GDT 550V 20% 10KA T/H FAIL SHORT |
| Manufacturer | Littelfuse | Littelfuse | TE Connectivity Raychem Circuit Protection |
| Product Category | Gas Discharge Tubes - GDTs / Gas Plasma Arrestors | Gas Discharge Tubes - GDTs / Gas Plasma Arrestors | Gas Discharge Tube Arresters (GDT) |
| RoHS | Y | Y | - |
| Series | GTCx3-R | GTCx3-P | |
| Peak Pulse Current | 10 kA | - | - |
| DC Sparkover | 550 V | - | - |
| Number of Electrodes | 3 Electrode | 3 Electrode | - |
| Termination Style | Radial | Radial | - |
| Failsafe Protection Y/N | Failsafe Not Protected | - | - |
| Diameter | 7.5 mm | 7.7 mm | - |
| Length | 11.5 mm | 12 mm | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 90 C | + 90 C | - |
| Packaging | Tray | Tray | Tray |
| Technology | Gas Discharge Tubes | - | - |
| Type | 3 Electrode Gas Discharge Tube | 3 Electrode Gas Discharge Tube | - |
| Brand | Littelfuse | Littelfuse | - |
| Mounting Style | Through Hole | Through Hole | - |
| Insulation Resistance | 10 GOhms | - | - |
| Product Type | GDTs - Gas Discharge Tubes / Surge Arresters | GDTs - Gas Discharge Tubes / Surge Arresters | - |
| Factory Pack Quantity | 1000 | 1000 | - |
| Subcategory | GDTs - Gas Discharge Tubes | GDTs - Gas Discharge Tubes | - |
| Part # Aliases | RF1919-000 | C85870-000 | - |
| Number of Poles | - | - | 3 |
| Package Case | - | - | Radial Cylinder, 3 Lead |
| Mounting Type | - | - | Through Hole |
| Tolerance | - | - | ±20% |
| Voltage DC Spark Over Nom | - | - | 550V |
| Impulse Discharge Current 8 20μs | - | - | 10000A (10kA) |
| Fail Short | - | - | Yes |