| PartNumber | LH1540AABTR | LH1540ACDTR | LH1540AT |
| Description | Solid State Relays - PCB Mount Normally Open Form 1A | Solid State Relays - PCB Mount Normally Open Form 1A 350V | Solid State Relays - PCB Mount Normally Open Form 1A |
| Manufacturer | Vishay | Vishay | Vishay |
| Product Category | Solid State Relays - PCB Mount | Solid State Relays - PCB Mount | Solid State Relays - PCB Mount |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | Through Hole |
| Relay Contact Form | 1 Form A (SPST-NO) | 1 Form A (SPST-NO) | 1 Form A (SPST-NO) |
| Load Voltage Rating | 350 VDC | 350 VDC | 350 VDC |
| Load Current Rating | 250 mA | 110 mA | 250 mA |
| Input Current | 50 mA | 50 mA | 50 mA |
| Output Type | MOSFET | MOSFET | MOSFET |
| Package / Case | SMD DIP-6 | SOP-8 | DIP-6 |
| Series | LH1540A | LH1540A | LH1540A |
| Length | 8.71 mm | 5.84 mm | 8.7 mm |
| Width | 6.5 mm | 5.72 mm | 6.5 mm |
| Height | 3.81 mm | 3.62 mm | 3.81 mm |
| Packaging | Reel | Reel | Tube |
| Contact Form | SPST (1 Form A) | SPST (1 Form A) | SPST (1 Form A) |
| Input Voltage | 1.45 V | 1.4 V | 1.45 V |
| Product | SSR - Solid State Relays | SSR - Solid State Relays | SSR - Solid State Relays |
| Termination Style | Gull Wing Lead | Gull Wing Lead | Solder Pin |
| Type | Isolated | Isolated | Isolated |
| Brand | Vishay Semiconductors | Vishay Semiconductors | Vishay Semiconductors |
| Input to Output Isolation Method | Optocoupler | Optocoupler | Optocoupler |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Product Type | SSR - Solid State Relays | SSR - Solid State Relays | SSR - Solid State Relays |
| Factory Pack Quantity | 1000 | 1000 | 2000 |
| Subcategory | Relays | Relays | Relays |