NR8500 Series
FEATURES
SMALL DARK CURRENT:
I
D
= 7 nA
HIGH SENSITIVITY:
S
= 0.94 A/W at = 1310 nm, M = 1
S
= 0.96 A/W at = 1550 nm, M = 1
HIGH SPEED RESPONSE:
f
C
= 1.5 GHz at M = 10
COAXIAL MODULE WITH SMF or GI-50 FIBER
WITH SC CONNECTOR: Standard
FC CONNECTOR: Option
NEC's NR8500 series is an InGaAs avalanche photo diode
(APD) coaxial module with optical fiber pigtail. This module is
designed for long wavelength optical communication systems
and is ideal as a reciever for Synchronous Digital Hierarchy
(SDH) system, STM-4 and STM-1, ITU-T recommendations.
DESCRIPTION
PART NUMBER
NR8500 Series
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
MAX
V
BR
Reverse Breakdown Voltage, I
D
=100 A
V
50
70
90
1
Temperature Coefficient of Reverse Breakdown Voltage
%/C
0.2
I
D
Dark Current, V
R
= V
BR
x 0.9
nA
7
30
I
DM
Multiplied Dark Current, M = 2 to 10
nA
1
5
C
t
Terminal Capacitance, V
R
= V
(BR)R
x 0.9, f = 1 MHz
pF
0.5
0.75
f
C
Cut-off Frequency, M = 10
GHz
1.0
1.5
M = 20
1.2
S
Sensitivity,
= 1310 nm
A/W
0.8
0.94
= 1550 nm
0.81
0.96
M
Multiplication Factor, = 1310 nm, I
PO
= 1.0 A
30
40
V
R
= V (@I
D
= 1 A)
x
Excess Noise Factor
2
, = 1310 nm, 1550 nm,
0.7
I
PO
=1.0 A, M = 10, f = 35 MHz, B = 1 MHz
F
Excess Noise Factor
2
, = 1310 nm, 1550 nm,
5
I
PO
=1.0 A, M = 10, f = 35 MHz, B = 1 MHz
ORL
Optical Return Loss
SMF
dB
30
GI-50 Fiber
28
Note:
2. F = M
X
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 25C, Unless otherwise specified)
California Eastern Laboratories
V
BR
(25C+TC)-V
BR
(25C)
TC V
BR
(25C)
1. =
NEC's
50
m
InGaAs APD IN COAXIAL PACKAGE
FOR 155 Mb/s AND 622 Mb/s APPLICATIONS
Dark Current, I
D
(A)
DARK CURRENT vs.
REVERSE VOLTAGE
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25C, unless otherwise specified)
SYMBOLS
PARAMETERS
UNITS
RATINGS
I
F
Forward Current
mA
10
I
R
Reverse Current
mA
1.0
T
C
Operating Case Temp.
C
-40 to +85
T
STG
Storage Temperature
C
-40 to +85
T
SLD
Lead Soldering Temperature
C
260 (10 sec.)
RH
Relative Humidity
%
85
(noncondensing)
WAVELENGTH DEPENDENCE OF
QUANTUM EFFICIENCY
Sensitivity (Relative Value),
S/S (%)
Operating Case Temperature, T
C
(C)
Reverse Voltage, V
R
(V)
Dark Current, Photo Current, I
D
, lph (A)
DARK CURRENT AND PHOTO
CURRENT VS. REVERSE VOLTAGE
Quantum Efficiency,
(%)
Wavelength, (m)
TYPICAL PERFORMANCE CURVES
(T
C
= 25C, unless otherwise specified)
TEMPERATURE DEPENDENCE OF
SENSITIVITY
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NR8500 Series
100
80
60
40
20
0
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
= 1310 nm
-60
-40
-20
0
20
40
60
80
100
-10
0
10
10
-4
10
-5
10
-6
10
-7
10
-8
10
-9
10
-10
0
20
80
60
40
100
I
D
lph
= 1310 nm
I
PO
= 1.0 A
T
C
= 25C
Reverse Voltage, V
R
(V)
10
-6
10
-7
10
-8
10
-9
10
-10
0
20
40
60
80
100
T
C
= 85C
T
C
= 65C
T
C
= 25C
T
C
= -20C
NR8500 Series
MULTIPLICATION FACTOR vs.
REVERSE VOLTAGE
Multiplication Factor, M
Reverse Voltage, V
R
(V)
10
3
T
C
= 85C
T
C
= 25C
T
C
= 65C
T
C
= -20C
10
2
10
1
10
0
0
20
40
60
80
100
TEMPERATURE DEPENDENCE OF
DARK CURRENT and MULTIPLIED
DARK CURRENT
Dark Current, Multiplied Dark Current I
D
,
I
DM
(A)
Frequency, f (GHz)
= 1310 nm
ID @ V
R
= 0.9 V
(BR)R
I
DM
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
-60
-40
-20
0
20
40
60
80
100
TYPICAL PERFORMANCE CURVES
(T
C
= 25C, unless otherwise specified)
= 1310 nm
R
L
= 50
M = 8
0
1.0
2.0
3.0
4.0
5.0
1
10
100
10
1
0.1
2
1
0.5
0.2
0.1
1
2
5
10
20
50
100
0.5
0.4
1310 nm ( ), 1550 nm ( )
f = 35 MHz, B = 1 MHz
100
50
20
10
5
2
1
100
50
20
10
5
2
1
FREQUENCY RESPONSE
Response, (3 dB/div.)
CUT-OFF FREQUENCY vs.
MULTIPLICATION FACTOR
Cut-off Frequency, f
C
(GHz)
TERMINAL CAPACITANCE vs.
REVERSE VOLTAGE
Terminal Capacitance, C
t
(pF)
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
Excess Noise Factor, F
Multiplication Factor, M
Multiplication Factor, M
Reverse Voltage, V
R
(V)
Operating Case Temperature, T
C
(C)
3-180
NR8500 Series
OUTLINE DIMENSIONS
(Units in mm)
352 mm
Fiber Length: 1000 mm MIN
Connector
8.990.5 mm
52 mm
12.70.2
17.00.2
2.2
0.9
3.20.2
7.00.2
5.00.2
1.20.2
4.00.2
10.51.0
14.01.0
3.70.3
1.00.1
P.C.D. = 2.0
7.20.3
24.71.0
4.00.5
3.2
3
2
1
1
3
2
0.450.05
2.2
3.50.5
Optical Fiber
Length: 1 m MIN
FP/FR
CP/CR
PART NUMBER
FLANGE TYPE
FIBER TYPE
AVAILABLE CONNECTOR
NR8500FP-BC-AZ* Flat mount Flange
SMF
With FC-UPC Connector
NR8500FP-CC-AZ*
With SC-UPC Connector
NR8500FR-BB-AZ*
GI-50 Fiber
With FC-SPC Connector
NR8500FR-CB-AZ*
With SC-SPC Connector
NR8500CP-BC-AZ* Vertical Mount
SMF
With FC-UPC Connector
NR8500CP-CC-AZ* Flange
With SC-UPC Connector
NR8500CR-BB-AZ*
GI-50 Fiber
With FC-SPC Connector
NR8500CR-CB-AZ*
With SC-SPC Connector
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
02/27/2003
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected
to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
CEL for all damages resulting from such improper use or sale.
ORDERING INFORMATION
16.00.2
0.5
0.450.05
0.9
Optical Fiber
Length: 1 m MIN
7.00.2
8.00.3
0.50.2
6.0
15.0
25.31.0
4.3
P.C.D. = 2.0
4R1.250.2
22.5
8.50.2
1
2
3
12.00.15
7.00.2
14.01.0
2
3
1
1. Anode (Negative)
2. Cathode (Positive)
3. Case
1. Anode (Negative)
2. Cathode (Positive)
3. Case
OPTICAL FIBER CHARACTERISTICS
PARAMETER
UNITS
SPECIFICATION
SMF
GI-50
Mode Field Diameter
m
9.51
Core Diameter
m
503
Cladding Diameter
m
1252
1252
Maximum Cladding Noncircularity
%
2
2
Maximum Core/Cladding Concentricity
%
1.6
4.0
Outer Diameter
mm
0.90.1
0.90.1
Cut-off Wavelength
nm
1100 to 1270
Minimum Fiber Bending Radius
mm
30
30
Fiber Length
mm
1000 MIN
1000 MIN
Flammability
UL1581 VW-1
*NOTE:
Please refer to the last page of this data sheet, "Compliance with EU Directives" for Pb-Free RoHS Compliance Infomation.
3-181
4590 Patrick Henry Drive
Santa Clara, CA 95054-1817
Telephone: (408) 919-2500
Facsimile: (408) 988-0279
Subject: Compliance with EU Directives
CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant
with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous
Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive
2003/11/EC Restriction on Penta and Octa BDE.
CEL Pb-free products have the same base part number with a suffix added. The suffix A indicates
that the device is Pb-free. The AZ suffix is used to designate devices containing Pb which are
exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals.
All devices with these suffixes meet the requirements of the RoHS directive.
This status is based on CEL's understanding of the EU Directives and knowledge of the materials that
go into its products as of the date of disclosure of this information.
Restricted Substance
per RoHS
Concentration Limit per RoHS
(values are not yet fixed)
Concentration contained
in CEL devices
-A
-AZ
Lead (Pb)
< 1000 PPM
Not Detected
(*)
Mercury
< 1000 PPM
Not Detected
Cadmium
< 100 PPM
Not Detected
Hexavalent Chromium
< 1000 PPM
Not Detected
PBB
< 1000 PPM
Not Detected
PBDE
< 1000 PPM
Not Detected
If you should have any additional questions regarding our devices and compliance to environmental
standards, please do not hesitate to contact your local representative.
Important Information and Disclaimer: Information provided by CEL on its website or in other communications concerting the substance
content of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information
provided by third parties and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better
integrate information from third parties. CEL has taken and continues to take reasonable steps to provide representative and accurate
information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. CEL and CEL
suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for
release.
In no event shall CEL's liability arising out of such information exceed the total purchase price of the CEL part(s) at issue sold by CEL to
customer on an annual basis.
See CEL Terms and Conditions for additional clarification of warranties and liability.
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