C - series Metal Domes, or cross snap domes, are round metal components. They work well with single or double - sided PCBs, flex circuits, and membrane switches. In PCBs, they help with electrical connections. In flex circuits, they offer needed flexibility. For membrane switches, they give users tactile feedback. Their simple yet effective design makes them useful across many electronics.

C-Series Metal Dome Button:Compact, durable and cost-effective, the C-Series metal dome is an excellent choice for switching applications. It fits into small Spaces and has a long service life, making it an ideal component in many industries where space is limited and life is demanding

Application of Metal Dome:

Metal dome in membrane switch, commonly found in devices like cell phones and other electronic devices.

1. Size of C Series metal dome: This refers to the diameter of the metal dome, ranging from 3mm to 20mm.

2. Range of trip force: Trip force is required to collapse the dome and complete the electrical contact. Typically, it ranges from 100 gf (grams-force) to 600 gf.

3. Typical dome specifications for cell phones:
- Diameter: 4mm
- Trip force options: 130gf, 160gf, or 180gf

4. Adjustability according to client's requests:
- Trip force: Clients can specify their desired trip force within the typical range.
- Ebound/return force: This might refer to the force exerted by the dome when returning to its original position after being pressed (rebound force).
- Click ratio: Possibly refers to the tactile feedback ratio or the audibility of the click when the dome collapses.
- Travel: The distance the dome moves when pressed.
- Height: The overall height of the dome structure.

These specifications are crucial for designing membrane switches that provide the desired tactile feedback and durability for various electronic applications, including cell phones.

C-series metal dome dome

C-Series dome with a unique ring feature pressed into the top. The unique design, of the snap dome switch, offers certain advantages over traditional snap domes.

he circular metal dome is round in shape and designed for multi-layer circuit boards or precision switches. The CSeries dome does not invert when pushed across a flat surface, making it suitable for scenarios requiring excessive travel. It remains fully functional under pressure, providing reliable haptic feedback and durability.

Here are some key points about Circle Metal Domes (C-Series Domes):

-Round metal dome, suitable for multi-layer circuit board, is the ideal choice for multi-layer PCB and precision switch. It can be used in ultra-travel scenarios and can provide consistent haptic feedback. It is durable and reliable. It is commonly used in films, discrete switches and other applications with high accuracy and reliability requirements. If you have any questions, please feel free to contact us!

metal sheet metal dome working principle

Metal dome is the metal dome switch, better than the silicone key feel, long life, pressing the dome and PCB circuit contact power, to achieve product operation

How to choose a metal snap dome

F-series snap domes

O-series snap domes

T-series snap domes

Special-shaped custom

Round metal dome: The circular special structure occupies a small area and is suitable for electronic devices with limited space. It takes into account the rebound and strength of the hand, and performs well in devices such as mobile phones that require more than a million times of life.

Oblong metal domes: The shape of the dome is like a regular waist circle, which is made by cutting both sides of the circular dome and can be used for the application of the circular dome. When the one-way space is narrow, it shows its advantages, and the oval, rectangular metal dome feels good.

Four-leg series metal domes: The four-leg dome is a metal dome with four legs, large stroke, clear operation sound, and is suitable for handheld, medical, and banking equipment with large PCB space and high travel requirements.

Triangular metal dome: The triangular metal dome is the first choice when the space is small, good touch and large pressure are needed. It is divided into feet and without feet, and can be selected according to the PCB board thickness and assembly process.

Special-shaped custom metal dome: Metal domes include round, oval, triangular, four-legged series, and the rest are categorized as shaped. All types can be customized, and the shaped ones can be made according to the shape, size, strength and other requirements, please contact us if you have any demands.

Metal Dome Specifications:

Contact Configuration	SPST, Normally Open
Contact Bounce (on)	<.3ms
Contact Bounce (off)	<6ms
Operating Temperature	-55 C to 125 C
Storage Temperature	-55 C to 125 C
Humidity	0-97% (no condensation)
Contact Resistance	<100 ohms
With gold or silver plating	<1 ohm
Voltage/Current Maximum	12 ma @ 24 volts DC, RL
Breakdown Voltage	Over 200 volts

TABLE OF CONTENTS of snap dome design guide

products	number	Bump	Diameter	Height	Trip Force	Thickness	Life Cycles
	SY-M5016R-Ni	no bump	5.0±0.05mm	0.23±0.03mm	0.18±0.03mm	0.06mm	2000,000
	SY-M2508R-Ag	no bump	2.5±0.05mm	0.14±0.03mm	0.10±0.03mm	0.04mm	500,000
	SY-M2516R-Ag	no bump	2.5±0.05mm	0.18±0.03mm	0.14±0.03mm	0.04mm	500,000
	SY-M4016R4DP-T-Ni	Four Bump	4.0±0.05mm	0.22±0.03mm	0.17±0.03mm	0.055mm	2000,000
	SY-M4018R4DP-T-Ni	Four Bump	4.0±0.05mm	0.23±0.03mm	0.18±0.03mm	0.055mm	500,000
	SY-M4018R4DP-T-Ni	Four Bump	4.0±0.05mm	0.23±0.05mm	0.19±0.05mm	0.055mm	2000,000
	SY-M4016R4DP-T-Ni	Four Bump	4.0±0.05mm	0.22±0.03mm	0.17±0.03mm	0.055mm	2000,000
	SY-M4018R4DP-T-Ni	Four Bump	4.0±0.05mm	0.23±0.03mm	0.18±0.03mm	0.055mm	2000,000
	SY-M4010R5DP-Ni	Five Bump	4.0±0.05mm	0.19±0.03mm	0.14±0.03mm	0.055mm	2000,000
	SY-M4012R5DP-Ni	Five Bump	4.0±0.05mm	0.20±0.03mm	0.15±0.03mm	0.055mm	2000,000
	SY-M4014R5DP-Ni	Five Bump	4.0±0.05mm	0.21±0.03mm	0.16±0.03mm	0.055mm	2000,000
	SY-M4016R5DP-Ni	Five Bump	4.0±0.05mm	0.22±0.03mm	0.17±0.03mm	0.055mm	2000,000
	SY-M4018R5DP-Ni	Five Bump	4.0±0.05mm	0.23±0.03mm	0.18±0.03mm	0.055mm	2000,000
	SY-M4020R5DP-Ni	Five Bump	4.0±0.05mm	0.24±0.03mm	0.19±0.03mm	0.055mm	2000,000
	SY-M4022R5DP-Ni	Five Bump	4.0±0.05mm	0.25±0.03mm	0.20±0.03mm	0.055mm	2000,000
	SY-M5010R5DP-Ni	Five Bump	5.0±0.05mm	0.16±0.03mm	0.21±0.03mm	0.06mm	2000,000
	SY-M5012R5DP-Ni	Five Bump	5.0±0.05mm	0.17±0.03mm	0.22±0.03mm	0.06mm	2000,000
	SY-M5014R5DP-Ni	Five Bump	5.0±0.05mm	0.18±0.03mm	0.23±0.03mm	0.06mm	2000,000
	SY-M5016R5DP-Ni	Five Bump	5.0±0.05mm	0.19±0.03mm	0.24±0.03mm	0.06mm	2000,000
	SY-M5018R5DP-Ni	Five Bump	5.0±0.05mm	0.20±0.03mm	0.25±0.03mm	0.06mm	2000,000
	SY-M5020R5DP-Ni	Five Bump	5.0±0.05mm	0.21±0.03mm	0.26±0.03mm	0.06mm	2000,000
	SY-M5022R5DP-Ni	Five Bump	5.0±0.05mm	0.22±0.03mm	0.27±0.03mm	0.06mm	2000,000
	SY-M5022R5DP-Ni	Five Bump	5.0±0.05mm	0.22±0.03mm	0.27±0.03mm	0.06mm	2000,000
	SY-M6010R5DP-Ni	Five Bump	5.95±0.05mm	0.19±0.03mm	0.24±0.03mm	0.06mm	2000,000
	SY-M6012R5DP-Ni	Five Bump	5.95±0.05mm	0.20±0.03mm	0.25±0.03mm	0.06mm	2000,000
	SY-M6014R5DP-Ni	Five Bump	5.95±0.05mm	0.21±0.03mm	0.26±0.03mm	0.06mm	2000,000
	SY-M6016R5DP-Ni	Five Bump	5.95±0.05mm	0.22±0.03mm	0.27±0.03mm	0.06mm	2000,000
	SY-M6018R5DP-Ni	Five Bump	5.95±0.05mm	0.23±0.03mm	0.28±0.03mm	0.06mm	2000,000
	SY-M6020R5DP-Ni	Five Bump	5.95±0.05mm	0.224±0.03mm	0.29±0.03mm	0.06mm	2000,000
	SY-M6022R5DP-Ni	Five Bump	5.95±0.05mm	0.25±0.03mm	0.30±0.03mm	0.06mm	2000,000
	SY-M6024R5DP-Ni	Five Bump	5.95±0.05mm	0.26±0.03mm	0.31±0.03mm	0.06mm	2000,000
	SY-M6025R5DP-Au	center hole	5.95±0.05mm	0.23±0.03mm	0.29±0.03mm	0.06mm	2000,000

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