| Crystal Wash : | |||||||||
| 1 | Carriers stacked in bottom possibly dampening ultrasonic energy. | ||||||||
| 2 | Carriers are made of Teflon? , could a stainless steel carrier enhance the ultrasonic energy? | ||||||||
| 3 | What is the particulate levels on the crystal blanks is this an issue? Being trapped by carriers? | ||||||||
| 4 | Has an inspection been done on the crystal blanks to look for particulate or residual? | ||||||||
| 5 | What is the resistivity of the DI water for the final rinse? | ||||||||
| 6 | What ultrasonic frequency is being used ? | ||||||||
| Baseplate: | |||||||||
| 1 | How close to actual frequency is the baseplating being done? | ||||||||
| 2 | What is the range coming out of Baseplate? Approx. 1500ppm | ||||||||
| 3 | What is the thickness of the NiCr layer plated prior to Gold? | ||||||||
| 4 | What is the range going into Baseplate? | ||||||||
| 5 | What is the plating rate? | ||||||||
| 6 | Monitor crystal not reading correctly? Short on the wire going to the monitor crystal | ||||||||
| 7 | How often is the monitor crystal changed? (6 Mhz?) | ||||||||
| Xtal Mount: | |||||||||
| 1 | Does eliminating brush wash after Mount change the aging data? | ||||||||
| 2 | Is brush wash effective at removing particulate from both sides of the crystal? | ||||||||
| 3 | |||||||||
| 4 | |||||||||
| Finish Plate: | |||||||||
| 1 | Sticks being returned to Transat to be looked at (design issue with sticks, thermal coupling) | ||||||||
| 2 | Finish Plater gaining capacitance causing crystals to read ok but are actually high in frequency | ||||||||
| Miscellaneous: | |||||||||
| 1 | What kind of data is being taken in process and how is it used? Any yield tracking? | ||||||||
| 2 | Is there some type of identifier in process which correlates to the aging data? | ||||||||
| 3 | Square packages had a lot of leakers, Finish Plate fixture needs to be redone so that | ||||||||
| units can be read easier and aren't so tight in fixture. (bent flange) | |||||||||