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Manufacturer of computer controlled relay, I/O and custom boards for commercial and industrial applications.

Please Note: Pencom will be closed from September 12th thru September 23 - we will re-open on September 26

** Please note supply chain shortage update 09-07-2022 -  a limited supply of the backordered parts will be arriving around September 28th for the USB boards - more parts are on order:   We have many backordered boards that will be produced first - notifications will go out to customers to verify the orders are still valid.

There will be production delays due the volume of the backorders

Due to the supply chain shortages we have been having a difficult time obtaining parts to produce our products.  Some of our parts have been on order for 12 months  Some parts are being received for certain products and we will do our best to fulfill what we can.

In addition we have been experiencing problems with our email system and many emails were never received on the following accounts our sales@pencomdesign.com and orders@pencomdesign.com, this has been happening for some time and we were unaware since it is happening sporadically. 

We have created two new accounts to use until we can determine the problems we are having with our system sales2@pencomdesign.com and orders2@pencomdesign.com please use these emails to contact us.

Other email address have been the same problems and we will work to correct these too.

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Reed Relay

Reed relays are typically used in low current, fast switching, low bounce, and high reliability applications (up to 10 billion operations), as in ATE equipment. No minimum current or voltage requirements. Reliability tested to 1 billion operations (from the manufacturer's specifications for the relays we use on our boards).

SPST configuration - normally open contacts (normally closed also available - contact sales to place an order).  Also available in SPDT configurations on specific boards.

Reed relays are very reliable, however if your circuit has capacitance or inductive loads - some protective circuitry will need to be added to the contacts to protect them from inrush or induced back EMF. 

Inductive loads may damage reed relays when the contacts open and capacitive loads when the contacts close.  Some forms of protection are, (MOV's) metal oxide varistors, RC snubber circuit, diodes, and transient voltage suppression diodes.  The type of protection will depend on whether the circuit is AC or DC and the amount of voltage and current that is switched. There are many examples on the internet that will help select the device required for your application.