Edition 1.1
July 2004
1
PIN Photodiode
FID3Z2KX/LX
FEATURES
Data rates up to 2.5 Gb/s
High Quantum Efficiency: 0.8A/W at 1,310nm
Low dark current: 0.1nA
Photosensitive area: 50m diameter
Wide spectral response range: 900nm to 1,600nm
APPLICATIONS
Optical transmission system: STM-1 (OC-3),
STM-4 (OC-12) or STM-16 (OC-48) short haul.
DESCRIPTION
The FID3Z2KX/LX is a PIN photodiode with a multimode
fiber pigtail designed for use in local area network, subscriber loop
and high bit-rate tranmission system applications up to 2.5 Gb/s at
both 1,310nm and 1,550nm wavelength. The PIN chip has a
photosensitivity area diameter of 50m with a planar structure and
guardring for high reliability. A multimode fiber is aligned to the
hermetically sealed PIN diode. The optical alignment system has
the high coupling stability.
LX
KX
2
PIN Photodiode
FID3Z2KX/LX
Parameter
Symbol
Conditions
OPTICAL & ELECTRICAL CHARACTERISTICS
(Ta=-40C to +85C, =1,300 and 1,500nm, Unless otherwise specified)
Unit
Limits
Max.
Typ.
PIN Responsivity
R
VR=1V, 1,300nm
1,500nm
-
0.89
0.80
A/W
-
0.93
0.85
VR=5V,
Ta=25C
Ta=70C
Ta=85C
Dark Current
ID
2
0.1
-
nA
10
-
-
20
-
-
Cut-off Frequency
fc
VR=5V, RL=50,
-3dB from 500kHz
GHz
-
2.0
1.5
Capacitance
Ct
f=1MHz, VR=5V,
pF
1.3
0.9
-
-
Optical Return Loss
ORL
dB
-
30
Min.
Parameter
Symbol
Storage Temperature
Tstg
+90
-40
C
Operating Case Temperature
-40
+85
C
Top
PIN Forward Current
-
5
mA
IF
PIN Reverse Current
2.0
-
mA
IR
PIN Reverse Voltage
20
0
V
VR
Unit
ABSOLUTE MAXIMUM RATINGS (Ta=25C, Unless otherwise specified)
Note 1: Optical characteristics are specified on the condition that
single-mode fiber is used for the optical source for the testing.
Limits
Max.
Min.
Variation of Responsitivity
R
%
3
-
-
4
-
-
VR=1V, -20 to +70C
-40 to +85
C
3
PIN Photodiode
FID3Z2KXLX
Fig. 1 Spectral Response (
vs. )
Fig. 2 Spectral Response (R vs.
)
Fig. 3 Temperature Dependence of Responsivity
Temperature, Ta (
C)
Normalized Responsivity,
R/R (25
C) (%)
Responsivity, R(A/W)
600
1200
800
1400
1600
1800
1000
0.1
1.0
0.5
Ta = 25C
Ta = 25C
Quantum Efficiency,
(%)
Wavelength,
(nm)
Wavelength,
(nm)
60
40
100
20
0
80
1200
1400
1600
1800
1000
800
600
VR = 1V
VR = 1V
-6
-4
-2
2
4
0
40
60
80
20
0
-20
-40
= 1,310nm
VR = 1V
Fig. 4 Dark Current vs. Reverse Voltage
Dark Current, I
D
(A)
10
20
0
10-12
10-13
10-10
10-9
10-8
10-11
Reverse Voltage, VR (V)
Ta = 25C
Ta = -40C
Ta = 85C
4
FID3Z2KX/LX
PIN Photodiode
Ta = 25C
Fig. 7 Capacitance vs. Reverse Voltage
Fig. 6 Frequency Response
Response (dB)
2
-9
-12
-6
-3
0
10
102
103
Fig. 5 Dark Current vs. Temperature
Dark Current, I
D
(A)
-20
0
20
40
60
80
-40
10-11
10-12
10-9
10-8
10-13
10-10
Temperature, Ta (
C)
Frequency (MHz)
VR=5V
VR=5V
RL = 50
= 1,310nm
10
5
50
0.5
0.2
1
Reverse Voltage, VR (V)
Capacitance, Ct (pF)
1
0.1
10
Ta=25C
f=1 MHz
5
3
1
7.4
2.5
2 - R1.25
1
3
2
16.0
12.0
2.54
16.0
0.3
10 MIN
1.0
7.3
32 MAX
1000 MIN
3 -
0.35
6.0 MAX
0.9
2
CASE
ANODE
CATHODE
"LX" PACKAGE
UNIT: mm
1
2
3
ANODE
CATHODE
CASE
4
2 - R 1.25
2 - C1.5
2.0
3.7
7.4
2
3
1
1000 MIN.
28 MAX.
17.0
2.54
17.0
6.0 MAX.
0.9
3-
0.35
12.7
7.4
10 MIN.
"KX" PACKAGE
UNIT: mm
PIN Photodiode
FID3Z2KX/LX
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