DH_Si Silicon Photodiode (200-1100nm)

  • DH_SI Si detector 200-1100nm
  • DH_SI Si detector connector
  • DH_SI Si detector with quick change adaptor
  • DH_SI Si detector with quick change interface

Housing a 10x10mm active area silicon photodiode (200-1100nm), the DH_Si is operated in the photovoltaic mode. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477 pre-amplifier followed by the 496 lock-in amplifier.

The mounting flange supplied with the DH_Si is compatible with the entire range of Bentham monochromators and accessories. A quick-change variant is also available.

Core benefits


  • Housed UV-enhanced silicon photodiode
  • Operated in either the DC or AC regimes
  • Compatible with Bentham's entire range of monochromators and accessories
  • Suitable for free standing applications
  • Recommended for use with 400 series detection electronics


Material Silicon
Active area 10 x 10mm
Window material Quartz
Spectral response range 200-1100nm
Operating mode Photovoltaic
Dark current (typ.) <1pA
Shunt Resistance (typ.) 0.2GΩ
Peak wavelength (typ.) 960nm
Peak responsivity (typ.) 0.52 A.W-1
NEP 1.8 x 10-14 W.Hz-1/2
Temperature dependence of responsivity Up to 1%/ °C (λ > 950nm)
Max. photocurrent 2mA
Max. operating Temperature -20 to +60°C


Connector BNC
Compatibility 4 x M3 clearance holes (Bentham slit pattern)
Dimensions 80L x 50W x 42H (mm)


DH_SI Silicon photodiode
DH_SI_QC Silicon photodiode, quick change interface
DH_Si detector housing top dimensions
DH_Si silicon photodiode - Top profile
DH_Si detector housing side dimensions
DH_Si silicon photodiode - Side profile

Ordering Information

DH_SI UV enhanced silicon photodiode
DH_SI_QC UV enhanced silicon photodiode, quick change interface

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