A 6x6mm tact switch is a tactile (light-touch) switch with a 6 by 6 mm body, the most common tact footprint on a PCB, used as the general-purpose momentary button across appliances, instruments, and consumer and industrial equipment. The 6 by 6 mm number fixes the board area, but it does not fix the part: the button or stem height ranges widely, commonly from about 4 mm to 18 mm, the operating force runs from about 100 to 260 gf, and the terminal is through-hole, surface-mount, or right-angle. Two switches can both be 6x6mm and still feel and mount differently. Most carry a low signal rating around 50 mA at 12 VDC, short travel near 0.25 mm, and a rated life that starts at about 100,000 cycles.
Swiclick manufactures 6x6mm tact switches in the KAN0xxx series, in through-hole and surface-mount terminals, multiple button heights, operating forces of 100, 160, and 260 gf, and selectable cycle life from 100,000 up to 1,000,000 operations, with custom heights and caps tooled in-house. A top networking-equipment brand has used the KAN0631 series at roughly 50 million units a year since 2018. How to match the height, force, and life, and how to second-source the workhorse, follows.
“6x6mm” fixes the footprint, not the part
The error that ships the wrong button is ordering “a 6x6mm tact” as if that named one component. The 6 by 6 mm footprint is shared across hundreds of parts that differ in what a user actually feels and a board actually needs: button height, operating force, and terminal. Height runs from a low-profile 4 mm up to a tall 18 mm stem that reaches a front panel; force runs from a light 100 gf to a firm 260 gf; and the terminal is through-hole, surface-mount, or right-angle for an edge.
So a 6x6mm part is defined by four numbers, not one. Match the height to the enclosure, since the stem has to reach the cap or panel without over- or under-traveling. Match the force to the use, lighter for frequently pressed keys and firmer for gloved or noisy environments. Match the terminal to the board and line. Then choose the life tier for the duty. Get the footprint right and the height wrong, and the button either does not reach the panel or bottoms out against it.
Matching the four numbers
A 6x6mm tact is specified the way the hkcapacitor and Schurter datasheets lay it out, from the mechanical constraints inward. Start with panel thickness and enclosure depth to set the button height, then pick the force for the feel, then the terminal for the line, then the life tier for how often the key is pressed.
| Number | Range to match | Why it bites |
| Button height | ~4 to 18 mm | Stem must reach the cap or panel exactly |
| Operating force | 100 to 260 gf | Sets the click; too light or firm feels wrong |
| Terminal | THT / SMD / right-angle | Wrong terminal will not place on your line |
| Life tier | 100k to 1M | An under-rated tier drifts on a heavy key |
The height is the number most often missed in a second-source, because the footprint matches and the part looks identical until it is the wrong distance from the panel.
Second-sourcing the standard 6mm tact
The 6x6mm tact is the most second-sourced switch there is, which is exactly why a blind swap goes wrong. A part of the same 6 by 6 mm footprint from another supplier can have a different button height, force, terminal, or life rating, so it is footprint-compatible only once the datasheets are compared on those four numbers. A supplier who promises a blanket drop-in for a 6x6mm part they have not seen is selling optimism, not switches.
The line that matters is a supplier who documents the height, force, terminal, and life across batches versus one who ships whatever 6x6mm part is in the bin. When you second-source, verify the button height, the operating force, the terminal style, and the cycle-life tier against the part you are replacing, plus the cap interface if the panel uses one. Confirm the height first, since it is the spec that looks identical on the footprint and is wrong most often.
Where 6x6mm tact switches are used (and proven at volume)
The 6x6mm tact is the default momentary button across the board: appliance and HVAC controls, instrument and equipment panels, audio and AV gear, networking and telecom hardware, and automotive interior controls. Its ubiquity is also why supply reliability at volume matters more than any single spec, because a program that standardizes on a 6x6mm key needs it delivered to the same spec for years.
Swiclick’s track record on the 6mm tact is in volume. A top networking-equipment brand has used the KAN0631 series at roughly 50 million units a year since 2018, and a global EMS provider runs the KAN0241H at roughly 80 million units a year. Both are 6mm-class KAN0xxx tact switches, produced and held to spec on a tact capacity of about 170 million units a month, which is the evidence that matters for a part a program will buy by the million.
How Swiclick supplies 6x6mm tact switches
Swiclick is a manufacturer, not a trading house, with over 30 years of switch production across three plants and its own tooling. The KAN0xxx 6mm tact line covers through-hole and surface-mount terminals, multiple button heights, NO and NC contacts, operating forces of 100, 160, and 260 gf, contact resistance of 50 to 100 milliohms, selectable life from 100,000 to 1,000,000 operations, and an operating range of -40 to +85°C, under an ISO 9001 quality system with UL, ENEC (ENEC-01613), and TÜV Rheinland certification.
For a production program, that means you can match the height, force, terminal, and life tier to the part you are replacing, tool a custom height or cap where the standard range does not fit, and rely on volume capacity for a part you buy by the million. Free samples ship in 4 days (1 to 50 pieces), datasheets are available without a form, and a custom development runs about 30 working days. Send the 6x6mm part you are second-sourcing or the height and force your enclosure needs, and an application engineer will confirm the match against the datasheet before you commit a board.
FAQ
The 6 by 6 mm footprint is standard, but the part is not. The same footprint comes in many button heights (about 4 to 18 mm), forces (100 to 260 gf), and terminals (through-hole, surface-mount, right-angle), so two 6x6mm switches can mount and feel differently. Specify all four to define the part.
Heights commonly range from a low-profile 4 mm to a tall 18 mm stem that reaches a front panel. The height has to match the enclosure depth and cap so the stem reaches without over- or under-traveling. Swiclick offers multiple heights and can tool a custom height.
Yes. The 6x6mm footprint comes in through-hole, surface-mount, and right-angle terminals. The terminal has to match the board’s pad pattern and assembly line, so confirm it before a swap.
Compare four numbers against the part you are replacing: button height, operating force, terminal, and cycle-life tier, plus the cap interface if used. Same footprint does not mean same part, so the swap is footprint-compatible rather than a blind drop-in. Confirm the height first.
It depends on the use. Lighter forces around 100 gf suit frequently pressed keys; firmer forces up to 260 gf suit gloved or noisy environments. Swiclick offers 100, 160, and 260 gf, so match the force to the feel the product needs.
Yes. Swiclick runs 6mm-class KAN0xxx tact switches at scale, including a networking program at roughly 50 million units a year, on a tact capacity of about 170 million units a month. For a high-volume program the spec is held consistent across batches.
