Final Inspection Sheet

 
The below table shows our final inspection sheet, which contains all the parameters that are controlled in the Quality Assurance Department. On request customers can receive a copy of the final inspection sheet when the components are delivered.

Journ. No.

Customer

Batch Pz

Type

Part (Dimensions in mm) Drawing No.

Date of inspection

Lot size

Sample plan II

AQL 0,65:

Sample size

Acc. number

Rejection number

.

Temperature

°C

Humidity

%RH

Remarks about origin or treatment of lot
 

Property

Unit

Tolerance

Measured minimum

Measured maximum

Mean within sample

Remarks

Number of defects

1.

Outer Dia. or length

(Mi / Sc)

 

mm
            

2.

Inner dia. or width

(Mi / Sc / Int.gauges )

 

mm
            

3.

Thickness or length

(Mi / Sc)

 

mm
            

4.

Radius of curvature

(watch dial/UBM)

 

mm
            

5.
                

6.
                

7.

Capacitance

(HP 4278A)

pF

nF
            

8.

Dielectric loss
tand

(HP 4278A)

 

%
            

9.

Impedance spectrum

(HP 4194A)
      

10.

fp / ft


(HP 4194A)

kHz

MHz
            

11.

kp / kt / keff
(HP 4194A)

%
            

12.

d33

pC/N
            

13.

(1) Dielectric constant
              

14.

(1) Np / Nt
 Hz m            

15.

Electrodes
  

Tape test or soldering test
    

16.

Poling

Date

Direction of poling

Marking
    

17.

Visual inspection
    

Remarks

Number of defects in sample
  
 

Number of approved parts after sample test
  
 

Total number of rejects
  
 

Total number of approved parts after sorting
  

(1)Calculated on parts with max./min. Cap./ fp / ft

Mi: Micrometer screw, Sc: Slide caliper

Date of approval:

Sign.

 
 Ferroperm Piezoceramics A/S
Hejreskovvej 18A
DK-3490 Kvistgård
Tel.: +45 49 12 71 00; Fax: +45 49 13 81 88
e-mail: pz@ferroperm-piezo.com