SMP400G-CE
MECHANICAL DATA
Dimensions in mm.
P.I.N. PHOTODIODE
FEATURES
Ø 5.4
Ø 4.7
• LARGE NUMERICAL APERTURE FOR EASE
OF COUPLING TO FIBRE OPTIC CABLES
• LOW NOISE
• WIDE INTRINSIC BANDWIDTH
4.3
• EXCELLENT LINEARITY
• LOW LEAKAGE CURRENT
• LOW CAPACITANCE
• TO-46 HERMETIC METAL CAN PACKAGE
Ø 0.45
Lead
2.54
Case
3
2
1
Cathode
3
Anode
13 nom.
DESCRIPTION
The SMP400G is a Silicon P.I.N. photodiode specifically
designed for optical fibre communication. The device is
incorporated in a compact, low profile, hermetic metal can
package.
A glass bead lens incorporated into the TO-46 case
provides an efficient optical design. This affords substantial
mis-alignment between the device and a fibre optic cable
without degrading the coupling efficiency.
2
1
TO-18 Package
Pin 1 – Anode
Pin 2 – Cathode
Pin 3 – Case
The electrical terminations are via three leads of
diameter 0.02" on a pitch of 0.1". Both cathode and anode
connections to the photodiode are electrically isolated from
the package.
ABSOLUTE MAXIMUM RATINGS
(Tcase = 25°C unless otherwise stated)
Operating temperature range
Storage temperature range
Temperature coefficient of responsively
Temperature coefficient of dark current
Reverse breakdown voltage
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
-40°C to +70°C
-45°C to +80°C
0.35% per °C
x2 per 8°C rise
60V
Prelim. 1/98
SMP400G-CE
CHARACTERISTICS
(Tamb=25°C unless otherwise stated)
Characteristic
Test Conditions.
Responsively
Active Area
Dark Current
Breakdown Voltage
Capacitance
E = 0 Dark
E = 0 Dark
E = 0 Dark
E = 0 Dark
E = 0 Dark
30V Reverse
50Ω
900nm
1V Reverse
10V Reverse
10µA Reverse
0V Reverse
20V Reverse
λ
at 900nm
Min.
0.45
Typ.
0.55
0.62
0.1
0.5
Max.
Units
A/W
mm
2
1.0
2.5
nA
V
60
80
8
1.5
4
7.2
0.45
12
2.5
pF
Rise Time
NEP
ns
W/√Hz
100
Relative Responsivity (%)
Relative Responsivity (%)
100
80
70
60
50
40
30
20
10
0
Relative Capacitance (%)
0
0.1
0.2
0.3
0.4
0.5
90
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
10
20
30
r Radial Displacement (mm)
Reverse Bias(V)
90
80
70
60
50
40
30
20
10
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
z Axial Displacement (mm)
Spectral Response
100
Relative Responsivity (%)
80
60
40
20
0
0
200
400
600
Wavelength (nm)
800
1000
1200
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 1/98
Analog electronics
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