We shipped a tray this week that looked like any other: 5,000 metal domes on a carrier tape, labeled for a German Tier-1 supplier that makes steering-wheel switch modules. But the quality team flagged the lot number before it went out. It was the 100 millionth dome we have pressed since the first run on our old 80-ton press in 2008. That is not a round number we invented for marketing. It comes off our MES system, which has logged every dome run since we digitized in 2019.
The customer did not make a big deal of it. They are buying 12 million domes a year from us, and one more tray is just inventory. But for us, the 100 millionth dome is worth stopping for, because it marks the difference between a small workshop and a supplier that automotive programs can rely on for 10 years without a redesign.
One of our 12 progressive die presses running four-legged SUS301 domes for automotive steering modules.
What 100 million domes actually means
A hundred million domes is enough to put a tactile switch on every car sold in Germany for the last three years. It is also enough to learn what breaks. In 18 years of production, we have seen rim cracks from too-tight die clearance, contact resistance drift from flux residue, and force drift from SUS301 batches with inconsistent hardness. Each failure taught us something that shows up in our current process: +/- 10g force tolerance, 0.005 mm die clearance control, and a 100% AOI inspection on every reel.
Our current capacity is 60 million domes a year across 12 progressive die presses in Qingdao. The 100 millionth dome was a 6 mm four-legged SUS301 dome at 250g, plated with a 3-micron gold flash on the contact ring. It goes into a steering-wheel module that sees 500,000 press cycles over the life of the car.
Who the 100 millionth dome went to
The customer is a German Tier-1 that we have been supplying since 2019. They spec our domes for steering-wheel switches, column stalks, and center console panels. Their PPAP requires IATF 16949 documentation, 100% incoming inspection on force and resistance, and a failure response time of 24 hours. We passed their second-source audit in 2021 and have not missed a delivery date since.
We cannot name the customer publicly, but we can say they buy dome sheet arrays on FPC for the steering wheel, and loose domes on rigid PCB for the center console. Their current annual volume with us is about 12 million pieces, split between four dome diameters.
The 6 mm four-legged SUS301 dome that shipped as the 100 millionth unit.
What changed between dome number 1 and dome number 100 million
The first dome we pressed in 2008 was a 5mm round dome at 300g, cut on a hand-fed press with no inspection. We shipped it to a remote control maker in Shenzhen, and they returned the whole lot because 15% of the domes had no snap. That was the day we bought our first force-curve tester.
Today, every reel is sampled on a force-curve bench before packing. We added AOI in 2020, salt spray testing in 2022, and the thermal shock chamber in 2026. The die clearance on our current presses is controlled to 0.005 mm, down from 0.05 mm in 2008. The actuation force tolerance moved from +/- 30g to +/- 10g. Each of those improvements came from a real customer problem, not from a consultant.
What this means for buyers
If you are sourcing metal domes for a new program, the number that matters is not our total shipment. It is the number of consecutive deliveries we have made on time and at spec. For our top three automotive customers, that number is zero missed deliveries in the last 24 months. That is the track record we want to sell on, not a round production milestone.
If you need a second source for domes, dome sheet arrays, or die-cut modules, send us your drawing and annual volume. We will send free samples within 48 hours and a PPAP-ready quote within five working days. Contact Shanyo engineering to start the qualification process.
- John Smith, Senior Application Engineer, Shanyo
We shipped a tray this week that looked like any other: 5,000 metal domes on a carrier tape, labeled for a German Tier-1 supplier that makes steering-wheel switch modules. But the quality team flagged the lot number before it went out. It was the 100 millionth dome we have pressed since the first run on our old 80-ton press in 2008. That is not a round number we invented for marketing. It comes off our MES system, which has logged every dome run since we digitized in 2019.
The customer did not make a big deal of it. They are buying 12 million domes a year from us, and one more tray is just inventory. But for us, the 100 millionth dome is worth stopping for, because it marks the difference between a small workshop and a supplier that automotive programs can rely on for 10 years without a redesign.
One of our 12 progressive die presses running four-legged SUS301 domes for automotive steering modules.
What 100 million domes actually means
A hundred million domes is enough to put a tactile switch on every car sold in Germany for the last three years. It is also enough to learn what breaks. In 18 years of production, we have seen rim cracks from too-tight die clearance, contact resistance drift from flux residue, and force drift from SUS301 batches with inconsistent hardness. Each failure taught us something that shows up in our current process: +/- 10g force tolerance, 0.005 mm die clearance control, and a 100% AOI inspection on every reel.
Our current capacity is 60 million domes a year across 12 progressive die presses in Qingdao. The 100 millionth dome was a 6 mm four-legged SUS301 dome at 250g, plated with a 3-micron gold flash on the contact ring. It goes into a steering-wheel module that sees 500,000 press cycles over the life of the car.
Who the 100 millionth dome went to
The customer is a German Tier-1 that we have been supplying since 2019. They spec our domes for steering-wheel switches, column stalks, and center console panels. Their PPAP requires IATF 16949 documentation, 100% incoming inspection on force and resistance, and a failure response time of 24 hours. We passed their second-source audit in 2021 and have not missed a delivery date since.
We cannot name the customer publicly, but we can say they buy dome sheet arrays on FPC for the steering wheel, and loose domes on rigid PCB for the center console. Their current annual volume with us is about 12 million pieces, split between four dome diameters.
The 6 mm four-legged SUS301 dome that shipped as the 100 millionth unit.
What changed between dome number 1 and dome number 100 million
The first dome we pressed in 2008 was a 5mm round dome at 300g, cut on a hand-fed press with no inspection. We shipped it to a remote control maker in Shenzhen, and they returned the whole lot because 15% of the domes had no snap. That was the day we bought our first force-curve tester.
Today, every reel is sampled on a force-curve bench before packing. We added AOI in 2020, salt spray testing in 2022, and the thermal shock chamber in 2026. The die clearance on our current presses is controlled to 0.005 mm, down from 0.05 mm in 2008. The actuation force tolerance moved from +/- 30g to +/- 10g. Each of those improvements came from a real customer problem, not from a consultant.
What this means for buyers
If you are sourcing metal domes for a new program, the number that matters is not our total shipment. It is the number of consecutive deliveries we have made on time and at spec. For our top three automotive customers, that number is zero missed deliveries in the last 24 months. That is the track record we want to sell on, not a round production milestone.
If you need a second source for domes, dome sheet arrays, or die-cut modules, send us your drawing and annual volume. We will send free samples within 48 hours and a PPAP-ready quote within five working days. Contact Shanyo engineering to start the qualification process.
- John Smith, Senior Application Engineer, Shanyo
