A contact surface in precision electronics assembly or a PCB fixture has to manage positioning and cushioning while accounting for static risk. Changes in compression, contact area and contamination can complicate both measurement and material decisions. The published Antistatic Silicone Pad is one option to review when a controlled-resistance path and cushioning are considered together.
Product confirmation and engineering problem
The official product page identifies a black antistatic silicone pad and lists 3.0 mm thickness, Shore A 30 ± 5 hardness and an ohm value of 50 ± 10 Ω. These are published product-page values, not a claim of ESD performance for an entire machine. The page also lists precision-electronics assembly pads, PCB production-fixture consumables and semiconductor-equipment cushioning as applications.
Mechanisms relevant to ESD protection
First, when a pad creates a continuous contact path, resistance, contact state and grounding arrangement together influence the current path. Second, conformability on an uneven surface changes actual contact area, so measurement should reflect the assembled condition. Third, the published tensile, tear and permanent-deformation data can inform inspection planning under repeated fixture compression, but duty-cycle validation remains necessary.
Engineering formula: Ohm’s law
V = I R. V is voltage in V, I is current in A, and R is resistance in Ω. Oregon State University’s Ohm’s law reference describes this relationship for a linear, ohmic conducting path. It is useful for reasoning about a controlled-resistance path; pad behaviour can still vary with compression, contact area, contamination, humidity, temperature and method. It is not a claim of pad discharge capability, system compliance or protection.
Five verified technical points
- The official page lists a black appearance.
- The listed thickness is 3.0 mm.
- The listed hardness is Shore A 30 ± 5.
- The listed ohm value is 50 ± 10 Ω.
- The page states that the material can be die-cut into pads, liners or gaskets.
Civil industrial use and selection reminders
For precision assembly, PCB fixtures or automated-equipment contact protection, first document grounding architecture, contact geometry, compression and cleaning. Then check dimensions and published data on the official product page, and validate resistance and mechanical cycling in the actual fixture.
Conclusion
Treating the pad as one interface in an ESD-management chain, rather than as an isolated protection promise, supports traceable selection and maintenance decisions. For converted dimensions or duty-specific fit, consult the product page.
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