Spectroscopy Detectors · Silicon photodetectors
DSi200 / DSi300
DSi Silicon Photodetectors
Large-area silicon photodetectors in UV-enhanced and blue-enhanced versions, with current output and spectral response extending to 1100 nm.
Specifications
| Models | DSi200 (UV enhanced) / DSi300 (blue enhanced) |
|---|---|
| Effective area | 100 mm² (Ø11.28 mm) |
| Spectral range | DSi200: 200–1100 nm; DSi300: 350–1100 nm |
| Peak wavelength | 820 nm / 970 nm |
| Peak responsivity | 0.52 A/W / 0.60 A/W |
| Operating temperature | −10 to +60 °C |
| Signal output | Current |
Complete source specification
Model-by-model comparison
The full manufacturer-published comparison is transcribed below so model differences remain visible rather than being reduced to a single range.
| Parameter | DSi200 — UV enhanced | DSi300 — blue enhanced |
|---|---|---|
| Effective area | 100 mm² (Ø11.28 mm) | 100 mm² (Ø11.28 mm) |
| Spectral range | 200–1100 nm | 350–1100 nm |
| Peak wavelength | 820 nm | 970 nm |
| Peak responsivity | 0.52 A/W | 0.60 A/W (> 0.55) |
| Specified responsivity | 0.14 A/W (> 0.09) at 254 nm | 0.20 A/W (> 0.15) at 410 nm |
| Rise time | 5.9 µs | 2 µs |
| Operating temperature | −10 to +60 °C | −10 to +60 °C |
| Storage temperature | −20 to +70 °C | −20 to +70 °C |
| Shunt resistance | 10 MΩ (> 5 MΩ) | > 10 MΩ |
| Noise-equivalent power | 4.5 × 10⁻¹³ W/√Hz | 2.0 × 10⁻¹³ W/√Hz |
| Maximum operating current at 0 V bias | 0.1 mA | 10.0 mA |
| Junction capacitance at 0 V bias | 4500 pF | 8800 pF |
| Signal output | Current | Current |
| Output polarity | P | P |
Design and integration details
- Large 100 mm² active area in UV-enhanced and blue-enhanced versions.
- BNC current output and direct mounting flange for Omni-λ monochromator slit assemblies.
- ZAMP transimpedance amplifier recommended when voltage output or improved sensitivity is required.
- Direct current-input connection is possible when the downstream instrument supports it.
Application and connection notes
- Use a ZAMP preamplifier with oscilloscopes, lock-in amplifiers or DCS103 acquisition when current-to-voltage conversion is needed.
- DCS300PA already integrates a signal amplifier, so an additional preamplifier is not required.
Values are transcribed from the archived product table and diagrams. Confirm the final detector, electronics and spectrograph interface for your configuration.
Archived manufacturer product page
