UVA Photodetector with Integrated Amplifier - TOCON_A4

• UVA photodetector with integrated amplifier
• TO5 hermetically sealed metal housing with lens cap
• 0 … 5 V signal output
• max. irradiance (saturation limit) at 331 nm (peak wavelength) is approx. 18 µW/cm2
• min. irradiance (resolution limit) is 1.8 nW/cm2

  • Model Number: TOCON_A4
  • Data Sheet: Date Sheet File
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  • UVA Photodetector with Integrated Amplifier
  • UVA Photodetector with Integrated Amplifier
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Product Specification

UVA-only SiC based UV photodetector with integrated amplifier


◆ TOCON_A4 UV Photodetector General Features


Properties of the TOCON_A4 UV Photodetector
• UVA-only SiC based UV photodetector in TO5 housing with concentrator lens cap
• 0 … 5 V voltage output
• peak wavelength at 331 nm
• max. radiation (saturation limit) at peak is 18 μW/cm2, minimum radiation (resolution limit) is 1.8 nW/cm2
• Applications: UVA radiation detection

What is a TOCON?
A TOCON is a 5 Volt powered UV photodetector with integrated amplifier converting UV radiation into a 0 … 5V volt-age output. The V out pin of the TOCON can be directly connected to a controller, a voltmeter or any other data analyz-ing device with voltage input. Highly modern electronic components and a hermetically sealed metal housing with UV glass window eliminates noise caused by parasitic resistance paths inside the package or EMI. A TOCON is a per-fect solution for each industrial UV sensing application starting from flame detection at pW/cm2 level up to UV curing lamp control at W/cm2 level. This thirteen orders of magnitude range is covered by ten different TOCONs that differ by their sensitivity. The TOCONs are produced as UV broadband sensors or with filters for selective measurement.
Silicon Carbide (SiC) detector chip inside
Sophisticated electronics make a TOCON a reliable component in harsh environments as well as for extremely low or extremely high UV radiation. But what makes the TOCON a quasi eternally living sensor is the sglux in-house pro-duced SiC detector chip featured by a PTB-reported extreme radiation hardness.


◆ TOCON_A4 UV Photodetector Specifications

Parameter Symbol Value Unit
Spectral Characteristics
Typical Responsivity at Peak Wavelength  Smax 280 mV/µW/cm2
Wavelength of max. Spectral Responsivity  λmax 331 nm
Responsivity Range (S=0.1*Smax)  – 309 … 367 nm
Visible Blindness (Smax/S>405nm)  VB > 1010
General Characteristics (T=25°C, Vsupply=+5 V)
Supply Voltage  VSupply 2.5 … 5 V
Saturation Voltage  VSat VSupply - 5% V
Dark Offset Voltage  VOffset 700 µV
Temperature Coefficient at Peak  Tc < -0.3 %/K
Current Consumption  I 150 µA
Bandwidth (-3 dB)  B 15 Hz
Risetime (10-90%)  trise 0.069 s
(other risetimes on request)
Maximum Ratings
Operating Temperature  Topt -25 … +85 °C
Storage Temperature  Tstor -40 … +100 °C
Soldering Temperature (3s)  Tsold 300 °C

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