NEC's φφ
φφ
φ50 µ µ
µ µ
µm InGaAs APD
IN COAXIAL PACKAGE
FOR 2.5Gb/s APPLICATIONS
NR8501 Series
FEATURES
•SMALL DARK CURRENT:
ID = 7 nA
•HIGH SENSITIVITY:
S = 0.94 A/W at λ = 1310 nm, M = 1
S = 0.96 A/W at λ = 1550 nm, M = 1
•HIGH SPEED RESPONSE:
fC = 2.5 GHz at M = 5
•COAXIAL MODULE WITH SINGLE MODE FIBER (SMF)
or GI-50 Fiber
•WITH SC CONNECTOR: Standard, FC connector: Option
(Refer to Ordering Information)
NEC's NR8501 Series are InGaAs avalanche photo diode
(APD) coaxial modules with optical fiber pigtail. They are
designed for long wavelength 2.5 Gb/s optical communication
systems and are ideal as a reciever for Synchronous Digital
Hierarchy (SDH) system, STM-16 ITU-T recommendations.
DESCRIPTION
California Eastern Laboratories
PART NUMBER NR8501 Series
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
VBR Reverse Breakdown Voltage, ID =100 µA V 40 60 80
δ1
Temperature Coefficient of Reverse Breakdown Voltage
%/ºC 0.20
IDDark Current, VR = VBR x 0.9 nA 7 30
IDM Multiplied Dark Current, M = 2 to 10 nA 1 5
CtTerminal Capacitance, VR = V(BR)R x 0.9, f = 1 MHz pF 0.5 0.75
fCCut-off Frequency, M = 5 GHz 2.5 3.0
M = 10 2.5 3.0
M = 30 1.0 1.2
S Sensitivity, λ = 1310 nm, M = 1 A/W 0.80 0.94
λ = 1550 nm, M = 1 0.81 0.96
M Multiplication Factor, λ = 1310 nm, IPO = 1.0 µA3040
VR = V (@ID = 1 µA)
x Excess Noise Factor2, λ = 1310 nm, 1550 nm, 0.7
IPO =1.0 µA, M = 10, f = 35 MHz, B = 1 MHz
F Excess Noise Factor2, λ = 1310 nm, 1550 nm, 5
IPO =1.0 µA, M = 10, f = 35 MHz, B = 1 MHz
ORL Optical Return Loss SMF dB 30
GI-50 Fiber 28
Notes:
2. F = MX
ELECTRO-OPTICAL CHARACTERISTICS (TC = 25°C, Unless otherwise specified)
V
BR
(25°C+∆T°C)-V
BR
(25°C)
∆T°C • V
BR
(25°C)
1. δ =
ABSOLUTE MAXIMUM RATINGS1
(TC = 25°C, unless otherwise specified)
SYMBOLS PARAMETERS UNITS RATINGS
IFForward Current mA 10
IRReverse Current mA 1.0
TCOperating Case Temp. °C -40 to +85
TSTG Storage Temperature °C -40 to +85
TSLD Lead Soldering Temperature °C 260 (10 sec.)
RH Relative Humidity % 85
(noncondensing)
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NR8501 SERIES
WAVELENGTH DEPENDENCE OF
QUANTUM EFFICIENCY
Terminal Capacitance C
t
(pf)
Reverse Voltage, VR (V)
Quantum Efficiency, η (%)
Wavelength, λ (µm)
TERMINAL CAPACITANCE vs.
REVERSE VOLTAGE
100
80
60
40
20
0
0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
1
2
5
10
20
50
100
2 5 10 20 50 100
TYPICAL PERFORMANCE CURVES (TC = 25°C, unless otherwise specified)
0.1
1
10
101 100
Excess Noise Factor F
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
Multiplication Factor M
NR8501 SERIES
Dark Current,I
D,
I
ph
(nA)
DARK CURRENT AND PHOTO
CURRENT vs. REVERSE VOLTAGE
Reverse Voltage, VR (V)
1
10
10
-12
10
-11
10
-10
10
-9
10
-8
10
-7
10
-6
10
-5
10
-4
10
2
020406080
λ = 1310 nm,
I
po
= 1.0 µA
I
ph
I
D
0
10
-12
10
-11
10
-10
10
-9
10
-8
10
-7
10
-6
10
-5
20 40 60 80
T
c
= 100 °C
+80 °C
+60
°
C
+40 °C
+20 °C
-20 °C
0 °C
1
2
5
10
20
50
100
2 5 10 20 50 100
1310 nm (
•
), 1550 nm (
O
)
f = 35 MHz, B=1 MHz
0.5
0.4
K
Dark Current, I
D
(nA)
DARK CURRENT
vs. REVERSE VOLTAGE
Reverse Voltage, VR (V)
Excess Noise Factor F
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
Multiplication Factor M
TYPICAL PERFORMANCE CURVES (TC = 25°C, unless otherwise specified)
NR8501 SERIES
PARAMETER SPECIFICATION UNITS
SMF GI-50 Fiber
Mode Field Diameter 9.5±1−µm
Core Diameter - 50±3µm
Cladding Diameter 125±2 125±2µm
Maximum Cladding Noncircularity 2 2 %
Maximum Core/Cladding Concentricity 1.6 4.0 %
Outer Diameter 0.9±0.1 0.9±0.1 mm
Cut-off Wavelength 1100 to 1270 - nm
Minimum Fiber Bending Radius 30 30 mm
Fiber Length 1000 MIN 1000 MIN mm
Flammability UL1581 VW-1
OPTICAL FIBER CHARACTERISTICS
OUTLINE DIMENSIONS (Units in mm)
FP/FR CP/CR
PIN CONNECTIONS
PIN CONNECTIONS
12.7±0.2
17.0±0.2
ø2.2
ø0.9
ø3.2±0.2
ø7.0±0.2
ø5.0±0.2
1.2±0.2
4.0±0.2
10.5±1.0
14.0±1.0
3.7±0.3
1.0±0.1
P.C.D. = ø2.0
7.2±0.3
24.7±1.0
4.0±0.5
3.2
3
21
1
3
2
ø0.45±0.05
2.2
3.5±0.5
Optical Fiber
Length: 1 m MIN
35±2 mm
Fiber Length: 1000 mm MIN
Connector
8.99±0.5 mm
5±2 mm
16.0±0.2
0.5
ø0.45±0.05
ø0.9
Optical Fiber
Length: 1 m MIN
ø7.0±0.2
8.0±0.3
0.5±0.2
6.0
15.0
25.3±1.0
4.3
P.C.D. = ø2.0
4–R1.25±0.2
2–ø2.5 8.5±0.2
1
2
3
12.0±0.15
7.0±0.2
14.0±1.0
2
3
1
1. Anode (Negative)
2. Cathode (Positive)
3. Case
1. Anode (Negative)
2. Cathode (Positive)
3. Case
PART NUMBER FLANGE TYPE FIBER TYPE AVAILABLE CONNECTOR
NR8501FP-BC-AZ* Flat Mount Flange SMF With FC-UPC Connector
NR8501FP-CC-AZ* With SC-UPC Connector
NR8501FR-BB-AZ* GI-50 Fiber With FC-UPC Connector
NR8501FR-CB-AZ* With SC-UPC Connector
NR8501CP-BC-AZ* Vertical Mount SMF With FC-UPC Connector
NR8501CP-CC-AZ* Flange With SC-UPC Connector
NR8501CR-BB-AZ* GI-50 Fiber With FC-UPC Connector
NR8501CR-CB-AZ* With SC-UPC Connector
ORDERING INFORMATION
A Business Partner of NEC Com
p
ound Semiconductor Devices, Ltd
.
02/24/2003
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.
NR8501 SERIES
*NOTE:
Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation.
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.
