HISTORY:
Sustainability is the name of the game! Anything (that has been tested and still functioning properly) should be repurposed creating saving in wasted Ee and reducing the poisoning our environment when items are buried in the earth at the local tip needlessly.
Never heard of Ee? It is a concept that creates a measurement of ALL things (not just electronics) that humans have made and the energy used in obtaining the raw material, processing the materials right through to a finished product and even should include the shipping of the item to the distributors/retailers.
If you would like to know more about Ee values, please take a look HERE
This component has been removed from working (but obsolete) electronic equipment used in the broadcast industry. The nature of this component means that it very rarely "comes into play" but when it does discharge, you have saved yourself some catastrophic equipment damage.
Surge Arrestors have been "around" for a very long time, Siemens began manufacturing this type of product back in the mid 1920's!
This device is not that old, the ID markings indicate it was manufactured 1996
Siemens no longer make these, their production was moved to TDK and you can also find these under the EPCOS name
SIEMENS - Surge Arrestor
Made in Germany
Type: 2500 96 0
Spark over voltage: 2500V
Made in 1996
0 in the part number means non-radioactive
DIMENSIONS:
8mm diameter
17.25mm lead length (1mm diameter wire)
4mm downwards lead length (to the PCB - NOT cut but desoldered)
FUNCTION: Voltage surge suppression, when a voltage exceeding the spark over voltage (2500V) is present across the component, breakdown (discharge) occurs and it is this discharge which is used to protect equipment from these voltage surges (typically created by lightning or other external influences introducing surges via the AC power source)
The discharge action is repeatable, once the surge voltage is removed, the device returns to its normal open circuit state (typically 10G Ohm resistance) and the equipment is once again being protected. Over time however, the internal insulation resistance can suffer (after many many discharges) and a replacement device may need to be fitted.
COSMETIC CONDITION:
Very good condition
Originally PCB mounted, with the component sitting 3mm off the PCB
TESTING:
Rudimentary testing undertaken ONLY.
DC test of the component shows infinite resistance, I cannot read resistances in the Gig Ohm range reliably!
To test the spark over voltage requires specialised equipment which I no longer have available (low current high voltage source or a specialised tool for the purpose)
*** Where the photograph shows multiple components, this advertisement is for ONE component not all that are shown!
