
SMC DH7A2 (D-H7A2) - Solid State Auto Switch, 3-Wire PNP Output, Band Mounting
SMC DH7A2 Solid State Auto Switch — 3-wire PNP output, band mounting style with a 0.5 m grommet lead wire. General purpose solid state auto switch, band mounting style, 3-wire PNP output, grommet, 0.5 m lead wire, DC 5/12/24 V (4.5 to 28 VDC), 40 mA max. load current, IP67, red LED indicator.
MPN: D-H7A2 · SKU: DH7A2
D-H7A2 Applications
The SMC D-H7A2 is used to sense piston position on pneumatic cylinders in assembly machines, packaging lines, machine tools and general factory automation. It is suited for end-of-stroke confirmation, interlock and sequencing signals into a PLC source input, and driving 24 VDC relays or IC circuits directly. Its band mounting style lets it clamp onto round-body and tie-rod cylinders that have no sensor slot, while the PNP source output, red LED indicator and IP67 grommet lead make it a straightforward choice for machine builders standardising on 3-wire positive-switching sensors.
D-H7A2 Specifications
| Brand | SMC | Manufacturer Part No. | D-H7A2 |
| Product Type | Solid State Auto Switch, General Purpose | Series | D-H7 |
| Mounting Style | Band mounting | Wiring | 3-wire |
| Output | PNP (source) | Electrical Entry | Grommet, in-line |
| Lead Wire Length | 0.5 m | Lead Wire | Oilproof vinyl cable, 3.4 mm dia., 0.15 mm2 |
| Supply Voltage | DC 5 V, 12 V, 24 V (4.5 to 28 VDC) | Current Consumption | 10 mA or less |
| Load Current | 40 mA or less | Internal Voltage Drop | 0.8 V or less |
| Leakage Current | 100 uA or less at 24 VDC | Operating Time | 1 ms or less |
| Indicator Light | Red LED lights when ON | Applicable Load | IC circuit, 24 VDC relay, PLC |
| Impact Resistance | 1000 m/s2 | Insulation Resistance | 50 Mohm or more at 500 VDC |
| Withstand Voltage | 1000 VAC for 1 minute | Enclosure | IP67 (IEC60529, JIS C0920) |
| Ambient Temperature | -10 to 60 C | Mounting Screw Torque | M3: approx. 0.8 to 1 N-m |
D-H7A2 Datasheet & Manual
Download Datasheet & ManualSMC DH7A2 · PDF · Official SMC documentTrusted by




