5V SPDT Relay

The 5V SPDT Relay is a passive, analog or power part in the LabWired part catalog. Its catalog type is relay-spdt. The catalog gives a supply range of 3.75–6 V. It has 5 pins. Placeable and checked electrically (nets, rails, connectivity), but it has no runtime behaviour of its own.

From the catalog: Bare 5 V SPDT power relay (Songle/Sanyou SRD-05 class): coil as series R+L (attrs.resistance/inductance, defaults 70 ohm / 10 mH) and a voltage-controlled contact that joins COM to NO above pickup (~3.75 V) with hysteresis to dropout (~0.5 V). NC is the inverted contact when wired. No flyback diode baked in — add one across the coil. No module opto/driver; relay-1ch is unchanged.

Key facts

What LabWired simulates

5V SPDT Relay pinout

• Other signals: coil+, coil-, COM, NO, NC

How to simulate the 5V SPDT Relay in LabWired

1. Open the Playground at app.labwired.com and place an MCU board.
2. Add the 5V SPDT Relay (catalog type relay-spdt).
3. Connect coil+, coil-, COM, NO and NC as your circuit needs.
4. The part has no runtime behaviour. LabWired checks its wiring: nets, rails and connectivity.

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Modelled from Sanyou SRD series relay datasheet (Songle SRD-05VDC-SL-C compatible).