High lifespan 2 million imported round 6mm metal domes

Circular nickel plating strength 280GF metal shrapnel with 1 contact dustproof metal domes

Product Characteristics

Tactile metal domes are momentary switch contacts that become normally open switches when used with a printed circuit board, flex circuit, or membrane. They are placed on printed circuit boards through pressure-sensitive adhesive tape, captured in a pocket design。

In the static state, the tactile metal spring is in contact outside the main pad. When briefly pressed, they come into contact and make contact with the secondary path, thereby closing the circuit. Many different shapes and forces can be used to suit your specific application. You can use them as mechanical switches, electrical contacts, and tactile switches.

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Overview

Features

- Ratings (Resistive Load): 0.1A, 50V DC

- Contact Resistance: 1Ω or less

- Insulation Resistance: 10MΩ or more

- Withstanding Voltage: 100V AC for 1 minute

Mechanical

- Operating Force: 1.0N to 2.8N (φ4mm, φ5mm, φ6mm)

- Lifespan: 1000,000 to 2,000,000 cycles

Venting

In circuit design, the movement of air is called “venting” and is important so that the dome switch functions properly. Lack of venting can cause adverse effects on the feel and function of the switch. While venting is not absolutely necessary for every application, it is desirable in almost all applications.When the dome is depressed, the air is trapped underneath it. To avoid compressing the air under the dome when actuated, it is recommended that a vent channel be present. The venting of the dome can be achieved in a number of different ways.The vent channel can go from dome to dome via a spacer layer.

Dome arrays can be top vented through the polyester material.

The vent channel can go through the board. Not properly venting the dome will result in a significant loss of tactile response.

Single-sided PCB with via hole

Double-sided PCB with via hole

Applications

Used in input key switches for:

- Small remote controls

- Portable AV equipment

- Educational repeaters

- Quiz buzzers

- Security system intercoms

- Access control devices

- Mobile phones and smartphones

- PDAs

- Game controllers

- Medical devices

- Automotive central control systems

Parameters

Product	Model	Diameter	Datasheet	Height	Dotted	Lifetime	Stroke	Strength	Specs
	SD-S6C28-1D-DN	6.0±0.05mm		0.265±0.05mm	1 dimple	2000000(cycles)	0.20±0.05mm	280+15/-10gf	Specs Product model : SD-S6C28-1D-DN Model :SD-S6C28-1D-DN Foot width :6.0±0.05mm Outer diameter :6.0±0.05mm Arc height :0.20±0.05mm Voltage :0.1-50V DC Current :0.005-100mA DC Material :SUS301Materials/T(mm)0.065 Plating :SUS301Materials/T(mm)0.065 Work temperature :+105° -40° Storage temperature :+100° -55° apply download pdf

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