Technical requirements and main parameters of pcb relay

1. PCB relay mechanical physical parameter requirements:

To ensure the use of pcb relay installation size, weight, tightness, strength and solderability of the lead pin. Including: contact pressure, contact gap, contact tracking, restoration reed pressure, armature stroke, nail height and other mechanical parameters.

2. Electrical parameter requirements:

It is necessary to ensure that the pcb relay works reliably and normally under the specified conditions of use, and accurately responds and transmits signals. Including: winding resistance, electrical contact resistance, pull-in current (voltage), rated working current (voltage), release current (voltage), rated contact load, insulation resistance, dielectric strength and other electrical parameters.

3. Time parameter requirements:

In the control circuit, the requirements for the pull-in and release time of the pcb relay are often put forward, as well as the time parameter requirements such as armature conversion, contact jitter, and pulse distortion.

4. Environmental adaptability requirements:

According to the use environment of pcb relay, in order to ensure reliable work, environmental adaptability items include: temperature (limit high and low temperature, temperature cycle, temperature shock, low temperature storage, etc.), moisture resistance (normal temperature and high humidity, high temperature and high humidity), low resistance Air pressure, vibration stability and vibration intensity, impact stability and impact intensity, constant acceleration. In special environments, there are also anti-salt spray, anti-fungal, radiation resistance, transportation, and storage items.

5. Life and failure rate index requirements:

The pcb relay shall not exceed the requirements specified by the product within the specified number of actions under the specified test environmental conditions and contact load. The error referred to here refers to the adhesion phenomenon when the contact is disconnected during the operation of the pcb relay, so that the contact voltage drop exceeds the specified level when the contact is closed. The pcb relays with reliability index requirements all stipulate the failure rate index level requirements.

6. Safety specification requirements:
In order to prevent electric shock and fire, the product must comply with the safety regulations of relevant countries.

Not all pcb relays have to meet the above several requirements. According to different usage conditions, the technical requirements of pcb relay are also different.