| PartNumber | V18MA1B | V18MA1S | V18MA1A |
| Description | Varistors 18V 40A 550pF | Varistors 18V 40A 550pF | Varistors 18V 40A 550pF |
| Manufacturer | Littelfuse | Littelfuse Inc. | Littelfuse Inc. |
| Product Category | Varistors | TVS - Varistors, MOVs | TVS - Varistors, MOVs |
| RoHS | Y | - | - |
| Series | MA | MA | MA |
| Product | MOV | MOV | MOV |
| Mounting Style | PCB Mount | - | - |
| Termination Style | Radial | Axial | Axial |
| Voltage Rating AC | 10 VAC | 10 VAC | 9 VAC |
| Voltage Rating DC | 18 VDC | 14 VDC | 13 VDC |
| Clamping Voltage | 44 V | 49 V | 49 V |
| Diameter | 3 mm | 3 mm | 3 mm |
| Peak Surge Current | 40 A | 40 A | 40 A |
| Surge Energy Rating | 600 mJ | - | - |
| Capacitance | 550 pF | 550 pF | 550 pF |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Length | 31 mm | - | - |
| Type | Varistor | - | - |
| Brand | Littelfuse | - | - |
| Product Type | Varistors | - | - |
| Factory Pack Quantity | 1500 | - | - |
| Subcategory | Varistors | - | - |
| Mounting | - | Radial | Radial |
| Operating Temperature Range | - | - 55 C to + 85 C | - 55 C to + 85 C |
| Package Case | - | SOD-83A Axial | SOD-83A Axial |
| Mounting Type | - | Through Hole | Through Hole |
| Number of Circuits | - | 1 | 1 |
| Varistor Voltage Min | - | 15V | 14V |
| Varistor Voltage Typ | - | 18V | 18V |
| Varistor Voltage Max | - | 21V | 23V |
| Current Surge | - | 40A | 40A |
| Maximum AC Volts | - | 10VAC | 9VAC |
| Maximum DC Volts | - | 14VDC | 13VDC |
| Energy | - | 0.06J | 0.06J |