All Amptek x-ray detector elements are available in the XR-100, X-123, or OEM configurations. The XR-100 configuration includes the detector and preamplifier only and must be paired with the PX5 Digital Pulse Processor, MCA, and Power Supply to be a complete system (or the DP5/PC5 OEM processor and power supply). The X-123 includes the digital pulse processor, MCA, and power supply and is a complete system. The XR-100/PX5 combination is the most flexible and is designed for laboratory use. The PX5 can be used with other detectors, including other manufacturers’. The X-123 configuration is ideal for OEM and custom applications where size and portability are considerations. For custom OEM applications, other configurations are available.

Figure 1. The XR-100/PX5 configuration.
X-123SDD X-Ray Detector System
Figure 2. The X-123 configuration.
PA-230 Housing
Figure 3. OEM configuration.
Detector Type
Detector Area/Thickness
Be Window Thickness
Guaranteed Energy Resolution eV FWHM @ 5.9 keV*
Peak to Background Ratio*
XR-100 Part Number
(must also order PX5 to be complete system)
X-123 Part Number
(complete system)
6mm2/500 µm
0.5 or 1.0 mil Be
145 – 165 eV
32 µs Peaking Time
P/B Ratio: 6200/1 (typical)
XY-FSG32MD-G3SP (1 mil Be)
XY-FSG32MD-G2SP (0.5 mil Be)
ZY-FSG32MD-G3SP (1 mil Be)
ZY-FSG32MD-E2SP (0.5 mil Be)
13mm2/500 µm
1.0 mil Be
180 – 205 eV
32 µs Peaking Time
P/B Ratio: 4100/1 (typical)
XY-FS432MD-G3SP (1 mil Be) ZY-FS432MD-G3SP (1 mil Be)
25mm2/500 µm
1.0 mil Be
190 – 225 eV
32 µs Peaking Time
P/B Ratio: 2000/1 (typical)
XY-FSJ32MD-G3SP (1 mil Be) ZY-FSJ32MD-G3SP (1 mil Be)
25mm2/500 µm
0.5 Be
125 – 140 eV
11.2 µs Peaking Time
P/B Ratio: 20000/1 (typical)
XY-GSJ3AMD-G2SP (0.5 mil Be) ZY-GSJ3AMD-G2SP (0.5 mil Be)
25mm2/500 µm
0.5 Be, C1 or C2 Si3N4
125 – 140 eV
4 µs Peaking Time
P/B Ratio: 20000/1 (typical)
XY-HSJ3AMD-G2SP (0.5 mil Be) ZY-HSJ3AMD-G2SP (0.5 mil Be)
70mm2/500 µm
0.5 Be, C2 Si3N4
123 – 135 eV
4 µs Peaking Time
P/B Ratio: >20000/1
XY-HS63AMD-Y2SP (0.5 mil Be) ZY-HS63AMD-Y2SP (0.5 mil Be)

*Peaking time is approximately 2.4 x shaping time
*The Peak to Background (P/B) Ratio is the ratio of counts from 5.9 keV to 2 keV for Si-PIN and 5.9 keV to 1 keV for SDD

All results are under full detector cooling; please Contact Us to discuss guaranteed performance under different operating conditions


Figure 3. Amptek Detector Resolution Ranges. The user should not only consider resolution in selecting a detector, but also area, thickness, and peak to background.


Resolution vs. Peaking Time for Si-PIN and SDD Detectors
Figure 4. Resolution vs. Peaking Time for Si-PIN and SDD Detectors. Peaking time is approximately 2.4 x shaping time.


Selection chart in PDF format (74 k)

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