Document
DISCONTINUED
NEC's φ80µm
InGaAs PIN-PD IN COAXIAL PACKAGE NR7800 SERIES
FOR 155Mb/s AND 622 Mb/s APPLICATIONS
FEATURES
• SMALL DARK CURRENT: ID = 0.1 nA
• HIGH SPEED RESPONSE: fc = 2.5 GHz MIN.
• HIGH SENSITIVITY: S = 0.89 A/W AT λ = 1310 nm S = 0.94 A/W AT λ = 1550 nm
• LOW OPERATING VOLTAGE: VR = 5 V
• COAXIAL MODULE WITH SINGLE MODE FIBER (SMF) or GI-50 fiber
• WITH SC CONNECTOR: Standard, FC connector: option (Refer to Ordering Information)
DESCRIPTION
NEC's NR7800 Series are InGaAs PIN photo diode (PIN-PD) coaxial modules with optical fiber pigtail. These modules are designed for long wavelength optical communication systems and are ideal as recievers for Synchronous Digital Hierarchy (SDH) system, STM-4 and STM-1, ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS (TC = 40° C to +85º C, unless otherwise specified)
PART NUMBER
NR7800 SERIES
SYMBOLS ID
Ct S
∆St
∆Sp
∆Sw
fc ORL
PARAMETERS AND CONDITIONS
Dark Current, VR = 5 V, TC = 25º C VR = 5 V
Terminal Capacitance, VR = 5 V, f = 1 MHz, TC = 25º C
Sensitivity, VR = 5 V, λ = 1310 nm VR = 5 V, λ = 1550 nm
Temperature Dependence of Sensitivity, VR = 5 V, λ = 1550 nm
Polarization Dependence of Sensitivity, VR = 5 V, λ = 1550 nm, TC = 25º C
Wavelength Dependence of Sensitivity, VR = 5 V, λ = 1520 to 1560 nm, TC = 25º C
Cut-off Frequency, VR = 5 V, TC = 25º C
Optical Return Loss, SMF GI-50 Fiber
UNITS nA
pF A/W
%
%
%
GHz dB
MIN
0.78 0.80
-5 -2.5 -2.5 2.5 30 28
TYP 0.1
1.0 0.89 0.94
MAX 1.0 20 1.5
5
2.5
2.5
California Eastern Laboratories
QuantumEfficiency,T ηI(%)NUED
NR7800 Series
ABSOLUTE MAXIMUM RATINGS1
(TC = 25°C, unless otherwise specified)
SYMBOLS
PARAMETERS
VR Reverse Voltage
IF Forward Current
PIN Optical Input Power
TC Operating Case Temp.
TSTG Storage Temperature
TSLD Lead Soldering Temp.
RH Relative Humidity (noncondensing)
UNITS V mA
mW °C °C °C %
RATINGS 20 10 8
-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 (TC = 25°C, unless otherwise specified)
WAVELENGTH DEPENDENCE OF QUANTUM EFFICIENCY
100
80
60
40
20
0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
Wavelength, λ (µm)
Sensitivity (Relative Value), ∆S/S (%)
TEMPERATURE DEPENDENCE OF SENSITIVITY
10 λ = 1310 nm
0
-10 -60 -40 -20 0
20 40 60 80 100
Operating Case Temperature, TC (°C)
DarkDICurrent,SID(nA) CON
REVERSE VOLTAGE DEPENDENCE OF DARK CURRENT
10
1.0 0.1 0.01
TC = 75°C 50°C
25°C 0°C
-25°C
0.001 0
10
Reverse Voltage, VR (V)
20
Remark:The graphs indicate nominal characteristics.
Dark Current, ID (nA)
TEMPERATURE DEPENDENCE OF DARK CURRENT
10 VR = 5 V
1.0
0.1
0.01
0.001 -60 -40 -20 0 20 40 60 80 100
Operating Case Temperature, TC (°C)
TYPICAL PERFORMANCE CURVES (TC = 25°C, unless otherwise specified)
NR7800 Series
ResponseED(dB)
Terminal Capacitance, Ct (pF)
FREQUENCY RESPONSE
12 VR = 5 V
9
λ = 1310 nm RL = 50 Ω
6
3
0 -3 -6
-9
-12
-15 0
2.5
Frequency, f (GHz) Remark:The graphs indicate nominal characteristics.
5.0
REVERSE VOLTAGE DEPENDENCE OF TERMINAL CAPACITANCE
5 f = 1.0 MHz
1
0.5 0.01
0.1 1 10
Reverse Voltage, VR (V)
100
4.0±0.2ONTINU
OUTLINE DIMENSIONS (Units in mm)
NR7800BFP/FR
Optical Fiber Length: 1 m MIN
ø0.9 ø3.2±0.2
Optical Fiber Length: 1 m MIN
NR7800CP/CR
ø0.9 ø3.2±0.2
3.5±0.5
3.5±0.5
ø5.0±0.2
ø7.0±0.2 2.2 ø2.2
ø0.45±0.05
12.7±0.2 17.0±0.2
P.C.D. = ø2.0
3 21
3.7±0.3 7.2±0.3
1.2±0.2 3.2
10.5±1.0
4.0±0.5
14.0±1.0
24.7±1.0
3 21
1. Anode (Negative) 2. Cathode (Positive) 3. Case
ø5.0±0.2
4.0±0.5 25.4±1.0
11.2±1.0
14.0±1.0
0.5±0.1 0.5
ø0.45±0.05
16.0±0.2
P.C.D. = ø2.0 4–R1.25±0.2
3 21
2 – ø2.5 8.5±0.2 12.0±0.1
7.0±0.2
3 21
1. Anode (Negative) 2. Cathode (Positive) 3. Case
1.0±0.1DISC
DISCONTINUED
NR7800 Series
OPTICAL FIBER CHARACTERISTICS
PARAMETER
UNITS SPECIFICATION
SMF
GI-50
Mode Field Diameter Core Diameter Cladding Diameter Maximum Cladding Noncircularity
µm 9.5±1
–
µm –
50±3
µm 125±2 125±2
%2
2
Maximum Core/Cladding Concentricity %
1.6
4.0
Outer Diameter Cut-off Wavelength
mm 0.9±0.1 0.9±0.1 nm 1100 to 1270 –
Minimum Fiber Bending Radius
mm 30
30
Fiber Length
mm 1000 MIN 1000 MIN
Flammability
UL1581 VW-1
Fiber Length: 1000 mm MIN
35±2 mm
Connector
8.99±0.5 mm
ORDERING INFORMATION
PART NUMBER FLANGE TYPE NR7800FP-BC-AZ* Flat mount Flange NR7800FP-CC-AZ* NR7800FR-BB-AZ* NR7800FR-CB-AZ* NR7800CP-BC-AZ* Vertical Mount NR7800CP-CC-AZ* Flange NR7800CR-BB_AZ* NR7800CR-CB-AZ* Note: 1. SC Connector: standard
FC Connector: option
FIBER TYPE SMF
GI-50 Fiber
SMF
GI-50 Fiber
AVAILABLE CONNECTOR1 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 wi.