S9295_15 Datasheet, PDF (6/7 Pages) Hamamatsu Corporation – Si photodiodes with preamp

Si photodiodes with preamp
S9295 series
Precautions
ESD
The S9295 series may be damaged or their performance may deteriorate by such factors as electro static discharge from the human
body, surge voltage from measurement equipment, leakage voltages from soldering irons and packing materials. As a countermeasure
against electro static discharge, the device, operator, work place and measuring jigs must all be set at the same potential. The
following precautions must be observed during use:
∙ To protect the device from electro static discharge which accumulate on the operator or the operator,s clothes, use a wrist strap or
similar tools to ground the operator,s body via a high impedance resistor (1 MΩ).
∙ A semiconductive sheet (1 MΩ to 10 MΩ) should be laid on both the work table and the floor in the work area.
∙ When soldering, use an electrically grounded soldering iron with an isolation resistance of more than 10 MΩ.
∙ For containers and packing, use of a conductive material or aluminum foil is effective. When using an antistatic material, use one
with a resistance of 0.1 MΩ/cm² to 1 GΩ/cm².
Strength
∙ Thermoelectrically-cooler devices may be damaged if subjected to shock, for example drop impact. Take sufficient care when
handling these devices.
Lead forming
∙ When forming the leads, take care not to apply excessive force to the lead sealing glass. Excessive force may impair the hermetic
sealing, possibly degrading the cooling capacity. To form the leads, hold the roots of the leads securely with a pair of pliers and
bend them.
Heatsink
∙ Use a heatsink with thermal resistance less than 1.3 °C/W. Apply thermal grease between the heatsink and detector package, and
then fasten them with the screws. Be careful not to give any excessive force or mechanical stress to the detector package at this
point.
Wiring
∙ Be careful not to misconnect the plus and minus leads of the thermoelectric cooler or preamplifier. Supplying a voltage or current
while these connections are reversed may damage the device.
∙ The feedback resistor integrated into S9295 series is high so it is susceptible to external noise. Always ground the case terminal
when using S9295.
Against UV light exposure
∙ When UV light irradiation is applied, the product characteristics may degrade. Such examples include degradation of the product’s
UV sensitivity and increase in dark current. This phenomenon varies depending on the irradiation level, irradiation intensity, usage
time, and ambient environment and also varies depending on the product model. Before employing the product, we recommend
that you check the tolerance under the ultraviolet light environment that the product will be used in.
∙ Exposure to UV light may cause the characteristics to degrade due to gas released from the resin bonding the product’s component
materials. As such, we recommend that you avoid applying UV light directly on the resin and apply it on only the inside of the
photosensitive area by using an aperture or the like.
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