Here at Presair, we’re pleased to provide you with a technical printed circuit board (PCB) pneumatic switch cross-reference guide. This guide is designed to assist you in comparing our products with those of notable competitors Tecmark, Herga, and Bingo Sensors. Click here to learn more about our line of PCB pneumatic switches.
The PCB pneumatic switches are single function controls with internal electrical contacts designed to mount directly to a printed circuit board. These basic component switches feature momentary switching logic in a compact design to add pneumatic actuation to any electronic control circuit.
This article focuses on Tecmark’s PCB Series, Herga’s 3761 / 6753 and 6891 / 6893 series, and Bingo Sensors’ PS-LA5. If you currently utilize one of these series and are exploring alternatives or seeking a precise cross-reference, this guide is tailored to you. Whether you’re an experienced technical professional or navigating the technical details of sequencing air switches, our cross-reference guide is designed to streamline your decision-making process, ensuring a precise match for your specific technical requirements.
| Manufacturer | Presair | Tecmark | Herga | Bingo Sensors |
| Product Name | C Series | PCB Series | 6761 / 6763, 6891 / 6893 | PS-LA5 |
| Mounting Styles & Air Connections | 1/8 NPT; 9/16-18 UNF Thread Mount with 1/8″ O.D. Center Air Spout; Radial Mount with 1/8″ O.D. Side Spout; Radial Mount with 2 Side Spouts 1/8″ O.D. | Center Hole or Side Mount Spout with 1/8NPT O.D. and 1/16 NPT, Specialty 1/8″ NPT Available | Back and Side entry spout, 4mm black entry, 2mm diameter [Lower Spout for Vac, Upper Spout for Pressure] | Radial Side Mount; 4.0mm inlet or 5.0mm for tube connection |
| Construction | Rynite Lower Body, Acetal Upper Body | Plastic | Plastic | Plastic |
| Diaphragm Material Options | Silicone, Nitrile, EPDM | Silicone | Silicone | Silicone, Nitrile, EPDM, Perbunan |
| Function | Open or Close on Pressure/Vacuum Rise or Fall | Open or Close on Pressure/Vacuum Rise or Fall | Open or Close on Pressure/Vacuum Rise or Fall, Differential | Open or Close on Pressure/Vacuum Rise or Fall |
| Pressure Range | 6″WC – 65 PSI(pressure) 6″WC-200″WC(vacuum) | 0.2 PSI – 0.9 PSI | 0.2 PSI to 14.5 PSI, 6891 (.5psi or .9psi) 6893 (.2psi or .35psi) | .07PSI – 11.5PSI |
| Max. Proof Pressure | 100PSI | 40 PSI | 29.5 PSI | 14.5PSI |
| Contact Configuration | SPST NO | SPST NO | SPST NO | SPST NO |
| +100,000 Max. Resistive Cycle Rating @250VAC | 1 AMP | 1 Amp | 50mA (250VAC for UL approved) | Not Disclosed |
| Certifications | UL, cUL Recognized | UL Recognized, CSA certified as operating control | UL specific 508 | Not Disclosed |
| Country of Origin | USA | USA | UK | China |
