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SM642 Back-thinned 2D CCD Spectrometer

SM642: The Choice for Low Signal Level Applications


- Scientific-grade high performance
- Low dark noise and stray light
- Good dynamic range and high signal to noise ratio
- High UV Quantum efficiency
- Flexible optical input direct to slit or via fiber
- Designed from the ground up for a wide range of applications
- High-speed data acquisition
- Standard design allows up to 200 - 1050nm range
- Auto shutter for dark condition


Spectral Products is offering the new SM642 non-TE cooled back-thinned 2048 pixel array CCD spectrometer. The SM642 provides high quantum efficiency in UV and high dynamic range. The detector used in the SM642 has 2048 pixels and helps to get better resolution. It is ideal for UV/VIS/NIR spectrometry that requires a high signal-to-noise ratio and/or high dynamic range. The back-thinned CCD has excellent sensitivity to UV and allows deep UV application, even below 200nm. Well-designed housing allows a wide measurement window like from 200nm to 1050nm (smaller measurement window sizes increase spectral resolution and light sensitivity) with low stray light. The standard interface to the SM642 is a USB 1.1/2.0 compatible interface with 16-bit. Software support includes an SDK and DLLs for dedicated applications development and our SM32Pro Windows-based spectral acquisition and analysis software.

NOTE: Please click SM642 for the brochure file.


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- SM32Pro & SMProMX - Windows (32-bit/64-bit) based software for data acquisition and analysis

- Transmission, reflectance, and absorbance measurements

- Data export, zoom in and out, spectrum overlays, and more features

- Color analysis tools included

- Signal average and integration time control

- DLL libraries available for easy user software development in DOS and Windows

- VC++ / VB / LabView / Matlab examples available




Hamamatsu S10420-1106 non-TE-cooled Back-Thinned CCD

Pixel: 2048 x 64
Sensing Pixel size: 14µm x 14µm
Well depth: 200 Ke-
Quantum efficiency: > 75% @600nm

Spectral Resolution

0.25 to 7nm depending on the slit and grating choices

Spectral Range

200 - 1050nm

Spectrograph f#


Fiber Coupler

SMA 905 or FC standard

Stray Light

< 0.01% @632nm (< 0.05% avg)

Dark Noise RMS

< 9 RMS counts in 16-bit @35ms integration time

Signal to Noise Ratio

> 450 : 1

min. Integration Time


Trigger mode

Free Run mode
Software Trigger mode
External Trigger mode (9-pin connector)
TTL Edge Trigger input/digital output for monitoring

Orders Sorting Filter

Longpass filter or linear variable filter installed per wavelength coverage

Computer Interface

USB 1.1 / 2.0 16-bit (0 - 65535) support up to 8 multi-channel configuration


Windows 98/Me/2000/XP/VISTA/Win7/Win8.1/Win10 (both 32/64bit)

SM32Pro & SMProMX (free with spectrometer)
Includes DLL libraries and SDKs for easy custom application development

Dimensions (inches)

5.98H x 3.94W x 2.50D inches



Slit Options

10, 25, 50, 100, 200, and 400µm

Temperature Induced Shift

±1 pixels per ±15°C