What to include in a sourcing brief
| Requirement | Information to provide |
|---|---|
| Electrical paths | Conductor count and layout, pin dimensions and material, termination method. |
| Electrical duty | Working voltage/current per path, relevant signal characteristics, isolation and dielectric requirements. |
| Installation | Flange, weld, braze or threaded interface; housing material and tolerances. |
| Environment | Vacuum or pressure, temperature range, bakeout, fluids or gases and cycling conditions. |
| Hermeticity | Test medium, leak-test method, units, limit and inspection coverage. |
| Acceptance and supply | Dimensional and electrical inspection, traceability, samples, recurring demand and delivery. |
Common questions
Is a feedthrough the same as a removable connector?
A feedthrough creates a path through the sealed boundary. It may have connector interfaces, but the sealing assembly and the detachable connection are separate design considerations.
What belongs in a hermeticity requirement?
State the test medium, measurement method, units and acceptable leak rate, together with test conditions and inspection coverage. The word hermetic alone does not define an acceptance test.
Material properties and another design’s test results are not a rating for your assembly. Requirements belong on the agreed drawing and acceptance plan.
Plan samples and technical review ↗