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Hitachi

Hitachi High-Technologies GLOBAL

SEA1200VX achieves highly sensitive results by measuring Pb-free solder samples at providing superior "limit of detection" and excellent repeatability.

Lead (Pb) in Pb Free Solder by SEA1200VX

Excellent linearity of the calibration curve for Pb-free solder created by optimal measurement conditions achieves a detection lower limit of 7.9ppm Pb at a measuring time of 300 seconds.


DL at 300 Meas. Time: 7.9ppm

Excellent Repeatability

SEA1200VX achieves a significantly higher repeatability of CV 1.9 % at a measuring time of 100 seconds using an MBH Pb-free solder standard sample.

Measurement Conditions
Voltage: 40kV
Current: 1000µA
Collimator: φ8mm
Filter: for Pb
Meas Time: 100 sec.

Standard Sample
MBH 74X HA

Ave. (ppm) 590
Readings 20
STDEV (ppm) 11.3
CV% 1.9
Concc. (ppm) 615

Application to Real Samples

The following tables and graph show an example of a Pb-free solder measurement by SEA1200VX achieving better correlation with ICP-OES.

Measurement Conditions
Voltage: 40kV
Current: 1000µA
Collimator: φ8mm
Filter: for Pb
Time: 300 sec.

Comparison with ICP-OES and XRF data

Sample ICP-OES XRF
1 310 310
2 308 299
3 42.1 45.0
4 113 120

(unit: ppm)


Spectrum of Sample 3