Drawn to true relative scale — the variants above are directly size-comparable.
Relays
Clear-cased relays let you see the contacts directly. Bright white metal buttons = silver. Small yellow bifurcated contacts = gold- or palladium-plated signal relays. Bigger is better — power relays, automotive relays and contactors carry real silver; tiny SMD signal relays carry almost nothing. Pre-2000 gear carries more.
How to spot it
Sealed rectangular plastic cubes (blue, black or clear), open-frame types with visible contacts, or cylindrical telecom cans. Marked with coil voltage and contact rating like 12VDC 10A 250VAC.
Metal content
| Metal | Quantity | Notes |
|---|---|---|
| Silver | 2–20 g/lb of whole relay | 0.5–5 wt%; the contacts themselves are 40–90% Ag |
| Gold | trace | gold-flashed AgPd on signal relays |
At 4 Aug 2026 spot prices that works out to $15.2 per pound of contained metal — Silver 8 g = $15.2. A refiner paying $1.5 returns about 10% of that, which is normal: refining costs money and the buyer takes a margin.
Safe removal
Working temperature: Cold
Crack the plastic housing with pliers or a vice, snip the silver buttons off the copper/brass springs. Dismantle before selling — refiners pay materially more for loose contacts than whole relays, because they don't have to pay for the labour.
Hazards
NEVER grind, burn, torch or braze cadmium-plated or AgCdO material, and don't inhale the black contact dust.
The common trap
Questions
How much gold is in relays?
Silver: 2–20 g/lb of whole relay. Gold: trace. At current spot that is about $15.2 of contained metal per pound.
How do you identify relays?
Clear-cased relays let you see the contacts directly. Bright white metal buttons = silver. Small yellow bifurcated contacts = gold- or palladium-plated signal relays. Bigger is better — power relays, automotive relays and contactors carry real silver; tiny SMD signal relays carry almost nothing. Pre-2000 gear carries more.
How do you remove relays safely?
Crack the plastic housing with pliers or a vice, snip the silver buttons off the copper/brass springs. Dismantle before selling — refiners pay materially more for loose contacts than whole relays, because they don't have to pay for the labour.
Related in Contacts & relays
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