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.
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 25°C, Unless otherwise specified)
PART NUMBER
SYMBOLS
V
BR
δ
1
NR8500 Series
UNITS
V
%/ºC
nA
nA
pF
GHz
A/W
1.0
0.8
0.81
30
MIN
50
TYP
70
0.2
7
1
0.5
1.5
1.2
0.94
0.96
40
0.7
5
dB
30
28
30
5
0.75
MAX
90
PARAMETERS AND CONDITIONS
Reverse Breakdown Voltage, I
D
=100
µA
Temperature Coefficient of Reverse Breakdown Voltage
Dark Current, V
R
= V
BR
x 0.9
Multiplied Dark Current, M = 2 to 10
Terminal Capacitance, V
R
= V
(BR)R
x 0.9, f = 1 MHz
Cut-off Frequency, M = 10
M = 20
Sensitivity,
λ
= 1310 nm
λ
= 1550 nm
I
D
I
DM
C
t
f
C
S
M
x
F
ORL
Multiplication Factor,
λ
= 1310 nm, I
PO
= 1.0
µA
V
R
= V (@I
D
= 1
µA)
Excess Noise Factor
2
,
λ
= 1310 nm, 1550 nm,
I
PO
=1.0
µA,
M = 10, f = 35 MHz, B = 1 MHz
Excess Noise Factor
2
,
λ
= 1310 nm, 1550 nm,
I
PO
=1.0
µA,
M = 10, f = 35 MHz, B = 1 MHz
Optical Return Loss
SMF
GI-50 Fiber
Note:
V
BR
(25°C+∆T°C)-V
BR
(25°C)
1.
δ
=
∆T°C
•
V
BR
(25°C)
2. F = M
X
California Eastern Laboratories
NR8500 Series
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25°C, unless otherwise specified)
SYMBOLS
I
F
I
R
T
C
T
STG
T
SLD
RH
PARAMETERS
Forward Current
Reverse Current
Operating Case Temp.
Storage Temperature
Lead Soldering Temperature
Relative Humidity
(noncondensing)
UNITS
mA
mA
°C
°C
°C
%
RATINGS
10
1.0
-40 to +85
-40 to +85
260 (10 sec.)
85
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
TYPICAL PERFORMANCE CURVES
(T
C
= 25°C, unless otherwise specified)
WAVELENGTH DEPENDENCE OF
QUANTUM EFFICIENCY
TEMPERATURE DEPENDENCE OF
SENSITIVITY
Sensitivity (Relative Value),
∆S/S
(%)
100
10
λ
= 1310 nm
Quantum Efficiency,
η
(%)
80
60
0
40
20
0
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10
-60
-40
-20
0
20
40
60
80
100
Wavelength,
λ
(µm)
Operating Case Temperature, T
C
(°C)
DARK CURRENT AND PHOTO
CURRENT VS. REVERSE VOLTAGE
Dark Current, Photo Current, I
D
, lph (A)
10
-4
10
-6
DARK CURRENT vs.
REVERSE VOLTAGE
10
-5
λ
= 1310 nm
I
PO
= 1.0
µA
T
C
= 25°C
lph
10
-7
10
-6
Dark Current, I
D
(A)
T
C
= 85°C
10
-8
10
-7
10
-8
I
D
T
C
= 65°C
10
-9
T
C
= 25°C
T
C
= -20°C
10
-9
10
-10
0
20
40
60
80
100
10
-10
0
20
40
60
80
100
Reverse Voltage, V
R
(V)
Reverse Voltage, V
R
(V)
NR8500 Series
TYPICAL PERFORMANCE CURVES
(T
C
= 25°C, unless otherwise specified)
MULTIPLICATION FACTOR vs.
REVERSE VOLTAGE
TEMPERATURE DEPENDENCE OF
DARK CURRENT and MULTIPLIED
DARK CURRENT
Dark Current, Multiplied Dark Current I
D
,
I
DM
(A)
10
3
10
-6
λ
= 1310 nm
10
-7
Multiplication Factor, M
T
C
= 65°C
10
2
T
C
= -20°C
ID @ V
R
= 0.9 V
(BR)R
10
-8
10
1
T
C
= 25°C
10
-9
I
DM
T
C
= 85°C
10
-10
10
0
0
20
40
60
80
100
10
-11
-60
-40
-20
0
20
40
60
80
100
Reverse Voltage, V
R
(V)
Operating Case Temperature, T
C
(ºC)
CUT-OFF FREQUENCY vs.
MULTIPLICATION FACTOR
10
FREQUENCY RESPONSE
λ
= 1310 nm
R
L
= 50Ω
M=8
Cut-off Frequency, f
C
(GHz)
5.0
Response, (3 dB/div.)
1
0
1.0
2.0
3.0
4.0
0.1
Frequency, f (GHz)
1
10
100
Multiplication Factor, M
TERMINAL CAPACITANCE vs.
REVERSE VOLTAGE
100
2
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
1310 nm ( ), 1550 nm ( )
f = 35 MHz, B = 1 MHz
Terminal Capacitance, C
t
(pF)
50
Excess Noise Factor, F
0.5
20
0.4
1
10
5
0.5
0.2
2
1
1
2
5
10
20
50
100
0.1
1
2
5
10
20
50
100
Reverse Voltage, V
R
(V)
Multiplication Factor, M
NR8500 Series
OUTLINE DIMENSIONS
(Units in mm)
FP/FR
Optical Fiber
Length: 1 m MIN
ø0.9
ø3.2±0.2
ø7.0±0.2
Optical Fiber
Length: 1 m MIN
CP/CR
ø0.9
3.5±0.5
6.0
0.5
ø0.45±0.05
14.0±1.0
16.0±0.2
4.0±0.5
24.7±1.0
4.0±0.2
10.5±1.0
ø7.0±0.2
2.2
ø2.2
1.2±0.2
3.2
0.5±0.2
8.0±0.3
ø0.45±0.05
12.7±0.2
17.0±0.2
14.0±1.0
3.7±0.3
P.C.D. = ø2.0
1.0±0.1
3
2
1
3
2
7.2±0.3
1
P.C.D. = ø2.0
4–R1.25±0.2
3
2
1
7.0±0.2
4.3
15.0
ø5.0±0.2
25.3±1.0
3
2
1
1. Anode (Negative)
2. Cathode (Positive)
3. Case
2–ø2.5
8.5±0.2
12.0±0.15
1. Anode (Negative)
2. Cathode (Positive)
3. Case
ORDERING INFORMATION
PART NUMBER FLANGE TYPE
NR8500FP-BC-AZ* Flat mount Flange
NR8500FP-CC-AZ*
NR8500FR-BB-AZ*
NR8500FR-CB-AZ*
NR8500CP-BC-AZ* Vertical Mount
NR8500CP-CC-AZ* Flange
NR8500CR-BB-AZ*
NR8500CR-CB-AZ*
FIBER TYPE
SMF
GI-50 Fiber
SMF
GI-50 Fiber
AVAILABLE CONNECTOR
With FC-UPC Connector
With SC-UPC Connector
With FC-SPC Connector
With SC-SPC Connector
With FC-UPC Connector
With SC-UPC Connector
With FC-SPC Connector
With SC-SPC Connector
*NOTE:
Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation.
OPTICAL FIBER CHARACTERISTICS
PARAMETER
Mode Field Diameter
Core Diameter
Cladding Diameter
Maximum Cladding Noncircularity
Maximum Core/Cladding Concentricity
Outer Diameter
Cut-off Wavelength
Minimum Fiber Bending Radius
Fiber Length
Flammability
UNITS
µm
µm
µm
%
%
mm
nm
mm
mm
SPECIFICATION
SMF
GI-50
9.5±1
–
–
50±3
125±2
125±2
2
2
1.6
4.0
0.9±0.1
0.9±0.1
1100 to 1270
–
30
30
1000 MIN 1000 MIN
UL1581 VW-1
35±2
mm
5±2
8.99±0.5 mm
Connector
Fiber Length: 1000 mm MIN
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.
02/27/2003
3-180
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
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
Lead (Pb)
Mercury
Cadmium
Hexavalent Chromium
PBB
PBDE
Concentration Limit per RoHS
(values are not yet fixed)
< 1000 PPM
< 1000 PPM
< 100 PPM
< 1000 PPM
< 1000 PPM
< 1000 PPM
Concentration contained
in CEL devices
-A
Not Detected
Not Detected
Not Detected
Not Detected
Not Detected
Not Detected
-AZ
(*)
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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