Spectroscopy Detectors · Mid-infrared single-point detectors
DPbS Series
DPbS Room-Temperature PbS Detectors
Room-temperature lead-sulfide detector modules for near- and mid-infrared scanning measurements, with integrated gain selection and voltage output.
Catalog context
Where DPbS Series fits
DPbS Series is listed as DPbS Room-Temperature PbS Detectors in the Mid-infrared single-point detectors family. The local catalog record provides these first selection fields: Models: DPbS2900 / DPbS3200; Active area: 4 × 5 mm / 6 × 6 mm; Spectral range: 0.8–2.9 µm / 0.8–3.2 µm.
Specifications
| Models | DPbS2900 / DPbS3200 |
|---|---|
| Active area | 4 × 5 mm / 6 × 6 mm |
| Spectral range | 0.8–2.9 µm / 0.8–3.2 µm |
| Gain selection | ×1 / ×10 / ×100 |
| Recommended modulation frequency | 400 Hz |
| Signal output | Voltage |
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.
Two responsivity/detectivity exponents are poorly encoded in the manufacturer HTML and are therefore marked for confirmation rather than silently corrected.
| Parameter | DPbS2900 | DPbS3200 |
|---|---|---|
| Effective area | 4 × 5 mm | 6 × 6 mm |
| Spectral range | 0.8–2.9 µm | 0.8–3.2 µm |
| Peak wavelength | ≈ 2.2 µm | ≈ 2.1 µm |
| Voltage responsivity Su | ≈ 3 × 10⁴ V/W | ≈ 300 V/W |
| Resistance Rd | 0.2–2 MΩ | 0.1–0.3 MΩ |
| D* | Confirm source exponent | Confirm source exponent |
| Time constant | ≤ 200 µs | ≤ 400 µs |
| Gain | ×1 / ×10 / ×100 | ×1 / ×10 / ×100 |
| Input offset voltage | < ±1 µV | < ±1 µV |
| Preamplifier input drift | ±1 µV | ±1 µV |
| Frequency response | 100–1000 Hz (400 Hz recommended) | 100–1000 Hz (400 Hz recommended) |
| Signal output | Voltage | Voltage |
| Output polarity | P | P |
Design and integration details
- Room-temperature photoconductive PbS detectors with an integrated preamplifier.
- Voltage output and selectable ×1, ×10 and ×100 gain.
- Intended for lock-in detection over the 0.8–3.2 µm region.
Application and connection notes
- Use a lock-in amplifier; select voltage-input mode when pairing with DCS103 or DCS300PA.
- The source recommends 400 Hz modulation within the 100–1000 Hz response range.
Values are transcribed from the archived product table and diagrams. Confirm the final detector, electronics and spectrograph interface for your configuration.
Archived manufacturer product pageSystem integration
Integration and compatibility
Use these checks to connect DPbS Series to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Spectral response
- Spectral range: 0.8–2.9 µm / 0.8–3.2 µm
- Responsivity varies strongly across the stated band. Read the figure at your own wavelength rather than at the peak the headline range implies.
- Active area
- Active area: 4 × 5 mm / 6 × 6 mm
- Active area sets both the alignment tolerance and, through capacitance, the achievable bandwidth. A larger element is easier to hit and slower to read.
- Output and bias
- Gain selection: ×1 / ×10 / ×100 · Signal output: Voltage
- Confirm whether the module is biased and amplified internally or expects an external supply and transimpedance stage. The two builds are not interchangeable and the wrong assumption destroys detectors.
Technical FAQ
Integration questions for DPbS Series
What wavelengths does the DPbS Series detect?
Spectral range: 0.8–2.9 µm / 0.8–3.2 µm. Responsivity varies strongly across the stated band. Read the figure at your own wavelength rather than at the peak the headline range implies.
What is the active area of the DPbS Series?
Active area: 4 × 5 mm / 6 × 6 mm. Active area sets both the alignment tolerance and, through capacitance, the achievable bandwidth. A larger element is easier to hit and slower to read.
How is the DPbS Series read out?
Gain selection: ×1 / ×10 / ×100 · Signal output: Voltage. Confirm whether the module is biased and amplified internally or expects an external supply and transimpedance stage. The two builds are not interchangeable and the wrong assumption destroys detectors.
Model selection
Nearby series comparison
Compare DPbS Series with the closest available models in the Mid-infrared single-point detectors family.
| Selection parameter | DPbS Series (current) | DMCT Series | DInSb5 Series |
|---|---|---|---|
| Spectral response | 0.8–2.9 µm / 0.8–3.2 µm | 2–12 / 2–14 / 2–16 / 2–22 µm, model dependent | 1–5.5 µm |
| Active area | 4 × 5 mm / 6 × 6 mm | 1 × 1 mm | Ø2 mm / 1 × 1 mm |
| Cooling / output | Voltage | Liquid nitrogen | Liquid nitrogen |
