12V Latching Solenoid SDK2-0730S – Self-Holding Push-Pull Lock for DIY Robotics & Electronics
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$9.95 NZD
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$9.95 NZD
$12.95 NZD
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12V Latching Solenoid SDK2-0730S – Self-Holding Push-Pull Lock for DIY Robotics & Electronics
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Urban $40
Rural $60
Compact bidirectional self-holding (latching) solenoid rated DC 12V, 24W. Pulse it briefly to actuate — it holds its extended or retracted position without ongoing power. IP67 sealed. 5mm stroke, 5–7N holding force, ≥100,000 actuation life. Ideal for electronic locks, robotics, and battery-powered builds.
Specifications
| Voltage | DC 12V |
| Power | 24W |
| Current | ~2A |
| Resistance | 6.5Ω |
| Stroke | 5mm |
| Push/Pull Force | 2–3N |
| Holding Force | 5–7N |
| Life Cycle | ≥100,000 actuations |
| Working Cycle | 0.2s on / 0.2s off (max duty) |
| Operating Temperature | −40°C to +90°C (5–85% RH) |
| IP Rating | IP67 |
| Body Size | 32.7 × 18 × 16.5mm (L × W × H) |
| Weight | 40g |
| Lead Length | 200mm |
Wiring & Driver Requirement
| Red wire | +12V — connect to positive supply via driver |
| Black wire | GND — connect to ground |
Important: Do not connect directly to an Arduino, Raspberry Pi, or ESP32 output pin — the solenoid draws ~2A which far exceeds any GPIO's drive capability and will damage your board.
Use a driver circuit: Connect your GPIO to a MOSFET (e.g. IRLZ44N or similar logic-level FET), relay module, or motor driver board. The GPIO controls the gate; the FET/relay switches the 12V supply to the solenoid.
Pulse to actuate: Apply 12V briefly (50–200ms) to extend or retract. The solenoid holds position when power is removed — no ongoing current required.
Use a driver circuit: Connect your GPIO to a MOSFET (e.g. IRLZ44N or similar logic-level FET), relay module, or motor driver board. The GPIO controls the gate; the FET/relay switches the 12V supply to the solenoid.
Pulse to actuate: Apply 12V briefly (50–200ms) to extend or retract. The solenoid holds position when power is removed — no ongoing current required.
What's Included
| 1 × | SDK2-0730S latching solenoid with 200mm pre-attached lead wires |
Common Uses
Electronic locks for enclosures, cabinets & access control
Robotics & automation — compact linear push-pull motion
Battery-powered builds requiring hold without continuous current draw
Vending machine & dispensing mechanism actuation
Textile machinery & precise fabric handling
DIY maker builds requiring a latching solenoid mechanism
Common Questions
Does it hold position when power is removed?
Yes — this is a self-holding (latching) solenoid. Once actuated with a brief pulse, it holds its position magnetically without any ongoing current. This is the key difference from a standard solenoid, which returns to its rest position when power is removed.
What MOSFET should I use with this?
Any logic-level N-channel MOSFET rated for at least 3A at 12V is suitable — the IRLZ44N is a common choice. Add a flyback diode (e.g. 1N4007) across the solenoid terminals to protect against voltage spikes when switching off.
Please note: Requires a MOSFET, relay, or motor driver — do not connect directly to GPIO pins. Pulse to actuate; sustained power generates significant heat. Respect 0.2s on / 0.2s off duty cycle.