D2F-01
ActiveD2F Ultra-Subminiature Microswitch
Omron D2F — the microswitch inside most computer mice and arcade buttons.
Common Applications
The most famous microswitch in gaming. Found inside Logitech, Razer, and SteelSeries mice. Also used in Sanwa and Seimitsu arcade buttons as replacement microswitches. The D2F-01 has a light 0.74N actuation for fast mouse clicks. Every PC gamer has pressed this switch millions of times.
Specifications
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Actuation Force
The force needed to press the button. Lower = more sensitive. Sanwa ~65g (light), Seimitsu ~85g (medium), Happ ~130g (heavy).
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0.74N (75gf)
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Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
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Snap-action
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE
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Contact Configuration
The electrical switching arrangement.
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SPST
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Mechanical Life
How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.
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10,000,000 cycles
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Installation Quick Reference
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Dimensions
Wiring Diagram
Troubleshooting
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Where to Buy
Price range
$59.9 — $87.54
across 2 distributors
Quick Specs
- Actuation Force
- 0.74N (75gf)
- Actuator Function
- Snap-action
- Certifications
- UL, CSA, CE
- Contact Configuration
- SPST
- Mechanical Life
- 10,000,000 cycles
What People Are Saying
“The most famous microswitch in gaming. Found inside Logitech, Razer, and SteelSeries mice. Also used in Sanwa and Seimitsu arcade buttons as replacement microswitches. The D2F-01 has a light 0.74N act”
