DATA SHEET
PHOTO DIODE
NDL5421P Series
1 000 to 1 600 nm OPTICAL FIBER COMMUNICATIONS
φ
50
µ
m InGaAs PIN PHOTO DIODE MODULE
DESCRIPTION
NDL5421P Series is an InGaAs PIN photo diode module with multimode fiber. It is designed for 2.5Gb/s optical
fiber communication systems and covers the wavelength range between 1 000 and 1 600 nm with high efficiency.
FEATURES
• Small dark current
• High quantum efficiency
• Detecting area size
• Low operating voltage
• Low terminal capacitance
• High speed response
I
D
= 0.1 nA
η
= 86 % @
λ
= 1 300 nm
η
= 75 % @
λ
= 1 550 nm
φ
50
µ
m
V
R
= 5 V
C
t
= 0.7 pF @ f = 1.0 MHz, V
R
= 5 V
f
C
= 2.5 GHz min.
• Coaxial module with multimode fiber (GI-50/125) or optional siglemode fiber (SM-9/125)
PACKAGE DIMENSIONS
in millimeters
•
NDL5421P2
Optical Fiber:
GI-50/125
Length: 1 m MIN.
NDL5421P
Optical Fiber:
GI-50/125
Length: 1 m MIN.
Shrunk tube
NDL5421P1
Optical Fiber:
GI-50/125
Length: 1 m MIN.
Shrunk tube
Shrunk tube
30.0 MAX.
φ
6.0
+0.0
–0.1
12.5 MIN. 4.0±0.1
6.9±0.3
6.9±0.3
12.5 MIN.
3.9±0.5
φ
6.0
+0.0
–0.1
φ
6.0
+0.0
–0.1
φ
0.45
2–
φ
2.2
2.5±0.1
0.5±0.1
2–
φ
2.5
2
3
1
12.5 MIN.
30.0 MAX.
φ
2.0
12.0±0.1
16.0±0.2
φ
2.5
30.0 MAX.
φ
2.5
14.0±0.1
φ
2.5
φ
2.0
φ
2.0
18.0±0.1
PIN CONNECTIONS
1 Anode (Negative)
2 Cathode (Positive)
3 Case
3
2
1
The information in this document is subject to change without notice.
Document No. P10262EJ2V0DS00 (2nd edition)
Date Published June 1996 P
Printed in Japan
The mark
•
shows major revised points.
4.0±0.3
2
1
3.0±0.3
7.0±0.3
1.5
6.0
+0.0
–0.1
3
2
3
1
7.0±0.15
©
1995
NDL5421P Series
•
ORDERING INFORMATION
Part Number
NDL5421P
NDL5421PC
NDL5421PD
NDL5421PS
NDL5421PSC
NDL5421PSD
NDL5421P1
NDL5421P1C
NDL5421P1D
NDL5421P1S
NDL5421P1SC
NDL5421P1SD
NDL5421P2
NDL5421P2C
NDL5421P2D
NDL5421P2S
NDL5421P2SC
NDL5421P2SD
Available Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
SM-9/125
GI-50/125
Vertical Flange
SM-9/125
GI-50/125
Flat Mount Flange
SM-9/125
GI-50/125
Description
No Flange
ABSOLUTE MAXIMUM RATINGS (T
C
= 25
°
C, unless otherwise specified)
Parameter
Reverse Voltage
Forward Current
Optical Input Power
Operating Case Temperature
Storage Temperature
Symbol
V
R
I
F
P
in
T
C
T
stg
Ratings
20
10
8
−40
to +85
−40
to +85
Unit
V
mA
mW
°C
°C
ELECTRO-OPTICAL CHARACTERISTICS (T
C
= 25
°
C, unless otherwise specified)
Parameter
Dark Current
Terminal Capacitance
Quantum Efficiency
Symbol
I
D
C
t
V
R
= 5 V
V
R
= 5 V, f = 1.0 MHz
λ
= 1 300 nm
λ
= 1 550 nm
Responsivity
S
λ
= 1 300 nm
λ
= 1 550 nm
Cut-off Frequency
f
C
V
R
= 5 V, R
L
= 50
Ω, λ
= 1 300 nm
75
64
0.78
0.80
2.5
Conditions
MIN.
TYP.
0.1
0.7
86
75
0.89
0.94
GHz
A/W
MAX.
1.0
0.9
Unit
nA
pF
%
η
2
NDL5421P Series
TYPICAL CHARACTERISTICS (T
C
= 25
°
C, unless otherwise specified)
TEMPERATURE DEPENDENCE
OF RESPONSIVITY
10
λ
= 1 300 nm
•
100
80
60
40
20
0
0.9
Responsivity (Relative Value)
∆
S/S (%)
WAVELENGTH DEPENDENCE
OF QUANTUM EFFICIENCY
Quantum Efficiency
η
(%)
0
1.0
1.1
1.2 1.3 1.4 1.5
Wavelength
λ
(
µ
m)
1.6
1.7
–10
–60
–40
40
60
–20
0
20
Case Temperature T
C
(˚C)
80
100
REVERSE VOLTAGE DEPENDENCE
OF DARK CURRENT
10
10
1
TEMPERATURE DEPENDENCE
OF DARK CURRENT
V
R
= 5 V
Dark Current I
D
(nA)
10
0
10
–1
T
C
= 75 ˚C
1.0
50 ˚C
10
–2
Dark Current I
D
(nA)
10
25 ˚C
0.1
0 ˚C
–3
–60
–40 –20
0
60
20 40
Case Temperature T
C
(˚C)
80
100
REVERSE VOLTAGE DEPENDENCE
OF TERMINAL CAPACITANCE
2
f = 1.0 MHz
–25 ˚C
0.01
Terminal Capacitance C
t
(pF)
20
1
0.5
0.001
0
10
Reverse Voltage V
R
(V)
0.3
0.1
0.3
1
3
Reverse Voltage V
R
(V)
10
3
NDL5421P Series
FREQUENCY RESPONSE
12
9
6
Response (dB)
λ
= 1 300 nm
V
R
= 5 V
P
in
=
−10
dBm
R
L
= 50
Ω
3
0
−3
−6
−9
−12
−15
0
2.5
Frequency f (GHz)
5.0
4
NDL5421P Series
HANDLING PRECAUTION for PD/APD MODULE
The NEC PD/PAD module has heat shrink tubing to protect the ferrule edge (*1) and the junction between the
ferrule and the module body (*2). In order to avoid breaking the fiber and/or optical coupling degradation, NEC
recommends the following handling precautions.
1. Do not make the fiber bend radius less than 30 mm (*3).
2. Do not bend the fiber within the 18 mm section from the module body (*4).
3. Do not stress the ferrule with a lateral force exceeding 500 g (*5).
30
fiber
m
m
m
in
(*3
)
(*1)
18 mm min. (*4)
ferrule (*5)
(*2)
module body
5
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