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 = 5
M = 10
M = 30
Sensitivity,
λ
= 1310 nm, M = 1
λ
= 1550 nm, M = 1
V
R
= V (@I
D
= 1
µA)
x
F
ORL
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
dB
30
28
0.7
5
UNITS
V
%/ºC
nA
nA
pF
GHz
2.5
2.5
1.0
0.80
0.81
30
MIN
40
NR8501 Series
TYP
60
0.20
7
1
0.5
3.0
3.0
1.2
0.94
0.96
40
30
5
0.75
MAX
80
S
M
A/W
Multiplication Factor,
λ
= 1310 nm, I
PO
= 1.0
µA
Notes:
V
BR
(25°C+∆T°C)-V
BR
(25°C)
1.
δ
=
∆T°C
•
V
BR
(25°C)
X
2. F = M
California Eastern Laboratories
NR8501 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
100
TERMINAL CAPACITANCE vs.
REVERSE VOLTAGE
100
Terminal Capacitance C
t
(pf)
Quantum Efficiency,
η
(%)
50
80
60
20
10
5
40
20
2
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
Wavelength,
λ
(µm)
Reverse Voltage, V
R
(V)
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
10
Excess Noise Factor F
1
0.1
1
10
100
Multiplication Factor M
NR8501 SERIES
TYPICAL PERFORMANCE CURVES
(T
C
= 25°C, unless otherwise specified)
DARK CURRENT AND PHOTO
CURRENT vs. REVERSE VOLTAGE
10
-4
DARK CURRENT
vs. REVERSE VOLTAGE
10
2
10
-5
10
-6
10
10
-7
λ
= 1310 nm,
I
po
= 1.0
µA
10
-5
10
Dark Current, I
D
(nA)
-8
I
ph
T
c
=
10
-9
10
-10
10
-6
1
10
-11
°
C
100
C
80
°
+
°
C
+60
°
C
+40
0
°
C
+2
0
°
C
°
C
-20
Dark Current,I
D,
I
ph
(nA)
10
-7
10
-12
0
20
40
60
80
10
-8
Reverse Voltage, V
R
(V)
10
-9
I
D
EXCESS NOISE FACTOR vs.
MULTIPLICATION FACTOR
100
1310 nm ( ), 1550 nm (
O
)
f = 35 MHz, B=1 MHz
•
10
-10
Excess Noise Factor F
50
20
10
5
K
0.5
0.4
10
-11
10
-12
0
20
40
60
80
2
1
2
5
10
20
50
100
Reverse Voltage, V
R
(V)
Multiplication Factor M
NR8501 SERIES
OUTLINE DIMENSIONS
(Units in mm)
FP/FR
Optical Fiber
Length: 1 m MIN
ø0.9
ø3.2±0.2
Optical Fiber
Length: 1 m MIN
ø7.0±0.2
CP/CR
ø0.9
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
0.5
ø0.45±0.05
12.7±0.2
17.0±0.2
14.0±1.0
ø0.45±0.05
14.0±1.0
16.0±0.2
PIN CONNECTIONS
3.7±0.3
P.C.D. = ø2.0
3
2
1
P.C.D. = ø2.0
4–R1.25±0.2
3
2
2–ø2.5
1
PIN CONNECTIONS
3
2
1
1.0±0.1
3
2
1
7.2±0.3
1. Anode (Negative)
2. Cathode (Positive)
3. Case
7.0±0.2
8.5±0.2
12.0±0.15
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
SPECIFICATION
UNITS
SMF
GI-50 Fiber
9.5±1
-
125±2
2
1.6
0.9±0.1
1100 to 1270
30
1000 MIN
−
50±3
125±2
2
4.0
0.9±0.1
-
30
1000 MIN
µm
µm
µm
%
%
mm
nm
mm
mm
UL1581 VW-1
35±2
mm
5±2
8.99±0.5 mm
Connector
Fiber Length: 1000 mm MIN
4.3
1. Anode (Negative)
2. Cathode (Positive)
3. Case
25.3±1.0
ø5.0±0.2
3.5±0.5
15.0
6.0
NR8501 SERIES
ORDERING INFORMATION
PART NUMBER
FLANGE TYPE
NR8501FP-BC-AZ* Flat Mount Flange
NR8501FP-CC-AZ*
NR8501FR-BB-AZ*
NR8501FR-CB-AZ*
NR8501CP-BC-AZ*
NR8501CP-CC-AZ*
NR8501CR-BB-AZ*
NR8501CR-CB-AZ*
FIBER TYPE AVAILABLE CONNECTOR
SMF
With FC-UPC Connector
With SC-UPC Connector
GI-50 Fiber
Vertical Mount
Flange
SMF
GI-50 Fiber
With FC-UPC Connector
With SC-UPC Connector
With FC-UPC Connector
With SC-UPC Connector
With FC-UPC Connector
With SC-UPC Connector
*NOTE:
Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation.
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.
02/24/2003
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
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