Kemo B197 12 VDC Relay Card Module

Kemo B197 12 VDC Relay Card Module Kit

Brand:| Model: B197
This relay card requires a trigger signal of only 5 mA / 12V to switch a load of up to 3A / 30V off or on.
  • Requires a trigger signal of only 5 mA / 12V
  • Capable of switching a 3A / 30 V circuit
  • Requires minimal soldering to assemble
Part # 
Weight: 0.15 lbs.  
Your Price
Part # 320-550
Qty:  EA
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Product Details

Kemo B197 12 VDC Relay Card Module Kit

Because this relay is very sensitive, it can be used in situations with very allowing for very little current draw, such as in series with an LED power indicator, to turn on or off heavy current circuits up to 3A / 30V. It is ideal for tying together multiple discrete circuits within an electronic project. Kit comes unassembled and ready to solder.

Specifications: • Operating voltage: 12 VDC • Current consumption: <80 mA • Current capacity: 3A / 30V • Sensitivity: < 5 mA • Board dimensions: 1.73" x 0.71".

Product Specifications
  • Project Kit TypeTimers & Controllers
Kemo B197 12 VDC Relay Card Module Kit
  • BrandKemo Electronic
  • ModelB197
  • Part Number320-550
  • UPC4024028011974
  • Product CategoryElectronic Project Kits
  • Unit of MeasureEA
  • Weight0.15 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Kemo B197 12 VDC Relay Card Module Kit

Product Q&A

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Kemo B197 12 VDC Relay Card Module Kit

Does this circuit require independent 12VDC power supply in addition to separate trigger signal?

See link for datasheet below;
Asked by: Jediok
Generally the purpose of a relay is to isolate a higher current/different voltage circuits from the user.For example in a car, a relay is used when the car is started. When the key is turned (switched) it activates, with little current, a relay that can handle the current requirements of starter motor. Without a relay, all that current would flow through the switch (key) and poses danger to the user.This relay uses a 3-12 volt input (dawing ~5mA) to turn another part of your circuit that is up to 30V and 3A.You should not need a separate power supply, unless the circuit you are trying to control has different voltage requirements.For example driving a 12volt motor can be done with one power supply. However with a 24V device, you would need a separate 3-12 volts. You don't have to get separate supplies, just regulate the 24v to 12 volts with a voltage regulator (linear[plus heat sink] or switching).
Answered by: JDoyner
Date published: 2013-07-18

Latching relay question

Is this a latching relay circuit that operates on-off with a momentary switch?
Asked by: Jarhol
I could not find the data sheet on the relay in the picture, but I did find a suggested replacement part which was a General Purpose relay. So this is not a latching relay.
Answered by: JDoyner
Date published: 2013-04-13

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