[miyoki, aso, dan, moriwaki, Kawabe, Arai, somiya]

Just a memo of new PD (C30665GH) stock:

• One in MIF
• Two in CAL
• One or two in ISS (to be confirmed soon)

Anyway, we will buy more (~10) from maybe Tohoku-denshi inc. although the lead time could be long. For emergency case, Hamamatsu Photonics G10899-03K whose efficiency is lower and dark noise is higher can be used 

Comparison between C30665GH and G10899

Excelitas C30665GH (https://www.excelitas.com/product/c30665gh-ingaas-pin-3mm-5)
Diameter: 3 mm
Responsivity: 0.80 A/W @ 1064 nm (measured)
Quantum Efficiency: 93 % @ 1064 nm (measured)
Dark current: 25 nA
Bandwidth: 75 MHz
Capacitance: 200 pF
Package: TO-5

○Hamamatsu G10899-03K (https://www.hamamatsu.com/jp/ja/product/category/3100/4007/4002/4107/G10899-03K/index.html)
Diameter: 3 mm
Responsivity: 0.73 A/W @ 1064 nm
Quantum Efficiency: 85 % @ 1064 nm (calculated)
Dark current: 75 nA
Bandwidth: 5 MHz
Capacitance: 600 pF
Package: TO-5

Although Arai-kun found some websites to offer C30665GH cheaply and quickly, he and I also noticed that they were not unreliable sites.

It seems C30665GH and G10899-03K have different pin assignment. So probably G10899-03K cannot be used as a replacement of C30665GH.

Thank you for your confirmation. To use Hamamatsu PD, should we change its wiring part or insert a swapping wire also??

Update of new PD (C30665GH) stock:

• One in MIF
• Two in CAL
• Three in ISS