S2592-04Si photodiode

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Thermoelectrically cooled photodiode for low-light-level detection in UV to near IR


The S2592-04 combines a UV to near infrared Si photodiode with a thermoelectric cooler. A thermistor is also included in the same package to sense the Si photodiode chip temperature. This allows stable operation over long periods of time, making this sensor suitable for low-light-level detection where a high S/N is required. The S2592-04 is hermetically sealed in a TO-8 package.


The diode will be used for power monitor in the laser system, which is for test and measurement during manufacturing of consumer electronics in the USA.

The price is only for sample evaluation, if you need to place bulk order, the price will be much cheaper.


- High S/N
- High UV sensitivity
- Built-in thermistor allows stable operation

Photosensitive area

5.8 × 5.8 mm

Number of elements




Package category




Reverse voltage (max.)

5 V

Spectral response range

190 to 1100 nm

Peak sensitivity wavelength (typ.)

960 nm

Photosensitivity (typ.)

0.5 A/W

Dark current (max.)

200 pA

Rise time (typ.)

1 μs

Terminal capacitance (typ.)

380 pF

Measurement condition

Typ. Ta=25 ℃, unless otherwise noted,
Photosensitivity: λ=960 nm, Dark current: VR=10 mV, Terminal capacitance: VR=0 V

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