S11299_15 Datasheet, PDF (2/8 Pages) Hamamatsu Corporation – 16-element Si photodiode arrays

16-element Si photodiode arrays
S11299 series
01 ^Feature
Back-illuminated type
The S11299 series photodiode arrays have a back-illuminated type structure. This structure uses no fragile easily-broken bonding wires since
the photodiode array output terminals are directly connected by bump bonding to the electrodes on the board. This structure is robust since the
board wiring is laid out within the board. The photodiode surface for coupling the scintillator has no bonding wires or photosensitive areas, so
there is less risk of damaging the photodiode array. The S11299 series is also resistant to effects from temperature cycle and so ensures high
reliability.
Cross-section diagram (comparison between front-illuminated type and back-illuminated type)
Front-illuminated type
(previous product)
X-ray
Bonding wire
Scintillator
Protective resin
Active area
Photodiode
Back-illuminated type
(New)
X-ray
Bump electrode
Scintillator
Photodiode
Active area
KMPDA0280EA
02 ^Feature
Multiple applications
The S11299 series supports dual energy imaging. To simultaneously
detect high energy X-rays and low energy X-rays, the S11299 series
is designed so that two photodiode arrays, each with a different
scintillator, are combined in an upper and lower two-layer format.
Arranging two or more S11299 series photodiode arrays in a row in
close proximity also forms a line sensor that allows measurement of
long objects.
Sensor structure example
Two-layer combination
Multi-array format
(Photo shows S11212-121.)
03 ^Feature
Superb uniformity
Our unique sensor design minimizes variations in sensitivity between
photodiode elements as well as at the sensor ends. The S11299 se-
ries offers significantly improved sensitivity uniformity compared to
our previous product (S5668 series) and so provides optimal X-ray
images.
Uniformity
110
(Typ. Ta=25 °C)
105
S11299 series
100
95
Previous product
90
85
80
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Element no.
KMPDB0353EA
2