
SMC DC73 Reed Auto Switch — Reed, 2-wire, with indicator light, band mounting. SMC D-C73 reed auto switch, general purpose / band mounting style. 2-wire with red LED indicator light. Application: relay, PLC. Max. load voltage 24 VDC / 100 VAC. Max. load current 5 to 40 mA at 24 VDC, 5 to 20 mA at 100 VAC. Max. internal voltage drop 2.4 V. Operating time 1.2 ms. Proof impact 300 m/s2. Insulation resistance 50 MOhm or more at 500 VDC. Proof voltage 1500 VAC for 1 minute. Ambient temperature -10 to 60 C. Protection structure IP67 (IEC 60529 / JIS C 0920). Lead wire 0.5 m standard.
MPN: D-C73 · SKU: DC73
D-C73 Applications
The D-C73 is a band-mounted 2-wire reed auto switch that detects piston position on round-body pneumatic cylinders such as the CDJ2, CDM2 and CDG1 series. With a red LED indicator, 24 VDC/100 VAC compatibility and 5-40 mA load range, it drives relay and PLC inputs directly through a simple mechanical contact. The band bracket lets it fit tie-rod and tube-style cylinders that lack a switch groove, making it a versatile end-of-stroke sensor for general automation.
D-C73 Specifications
| Brand | SMC | Manufacturer Part No. | D-C73 |
| Type | Reed Auto Switch | Wiring | 2-Wire |
| Indicator | With Indicator Light (Red LED) | Mounting | Band Mounting |
| Application | Relay / PLC | Max Load Voltage | 24 VDC / 100 VAC |
| Load Current | 5 to 40 mA (24 VDC) | Max Internal Voltage Drop | 2.4 V |
| Operating Time | 1.2 ms | Proof Impact | 300 m/s2 |
| Ambient Temperature | -10 to 60 C | Enclosure | IP67 (IEC 60529) |
| Lead Wire Length | 0.5 m |
D-C73 Datasheet & Manual
Download Datasheet & ManualSMC DC73 · PDF · Official SMC documentTrusted by




