L8231 and L7551 series are high-speed infrared emitters specifically developed for 1.3
m band optical fiber communications. These devices
incorporate a high-speed Fabry-Perot laser diode integrated in a receptacle module. Packages are available with various connectors and
mounting styles.
Features
l
High-speed Fabry-Perot laser diode
L8231 series: 1.25 Gbps
L7551 series: 2.5 Gbps
l
Compatible with single/multi mode optical fibers
Applications
l
Optical fiber communications
l
Fiber channel
l
Gigabit ethernet
l
HDTV
l
SDH
L A S E R D I O D E
Laser diode
Receptacle type, 1.3 m, 1.25, 2.5 Gbps
L8231/L7551 series
s Absolute maximum ratings (Ta=25
C)
Parameter
Symbol
L8231 series
L7551 series
Unit
Ith + 14 (DC)
Ith + 16 (DC)
mA
Forward current
I
F
Ith + 28 (pulse) *
1
Ith + 32 (pulse) *
1
mA
Reverse voltage (laserdiode)
V
R
2
V
Reverse voltage (photodiode)
V
R
m
20
V
Operating temperature
Topr
-20 to +70
C
Storage temperature
Tstg
-40 to +70
C
*1: Duty ratio 50 %
s Electrical and optical characteristics (Typ. Ta=25
C, I
F
=Ith +10 mA)
Parameter
Symbol
L8231 series
L7551 series
Unit
Peak wavelength
p
1.31
1.31
m
Forward voltage
V
F
1.1
1.1
V
Threshold current
Ith
6
9
mA
Fiber end output *
2
P
F
0.2
0.2
mW
Rise time
tr
250
200
ps
Data rate
B
1.25
2.5
Gbps
Monitor current (photodiode)
Im
0.4
0.5
mA
*2: M e a s ur e d using a single- mo d e o ptic al fiber ( m o d e field di am et er 9. 5 m) w i t h a m a st er plu g.
s Package lineup
L8231/L7551
Parameter
-21
-22
-23
-32
-44
Mounting style
Board
Panel
Board & panel
Connector
SC
FC
MU
FC
LC
Dimensional outline
1
Laser diode
L8231/L7551 series
s Pin connection
Pin No.
L8231 series
L7551 series
Anode (PD)
Cathode (PD)
Anode (LD)
Cathode (LD)
Cathode (LD)
Anode (LD)
Cathode (PD)
Anode (PD)
12.7
9.4
3.0
10.16
5.08
c
0.45 0.1
LEAD
7.5
2.0)
(
b
a
JIS C5973
SC RECEPTACLE
0.7 0.1
2.75
22.5 0.4
(16)
c
b
a
L8231-21
1.45
21.2 0.4
(10)
L7551-21
12.8 0.1
9.5 0.1
0.45 0.1
LEAD
M8 0.75 P
a
( 2.5)
c
11.55 0.1
b
JIS C5970
FC RECEPTACLE
SECTION A/A
2-56 UNC 2B
2 PLCS
(DEPTH: 4)
d
A
A
6.1 0.1
9.2 0.1
(5.2)
(4)
16.35 0.3
(4.8)
2.8 0.1
(16)
d
c
b
a
L8231-22
15.05 0.3
(3.5)
1.75 0.1
(10)
L7551-22
2.0)
(
0.7 0.1
7.62
7.5
9.6
13.5
3.0
(6.2)
5.08
2.42
9.35
22.1
a
b
0.45 0.1
LEAD
2.0)
(
11.55
1.2
ANSI/TIA/EIA 604-10
LC RECEPTACLE
1.3
(16)
b
a
L8231-44
0
(10)
L7551-44
s
Dimensional outlines (unit: mm, tolerance unless otherwise noted: 0.2)
KLEDA0034EB
L8231/L7551-21
KLEDA0035EB
L8231/L7551-22
KLEDA0045EA
L8231/L7551-23
KLEDA0036EB
L8231/L7551-32
KLEDA0046EB
L8231/L7551-44
8.5
6.5
9.0
0.45
0.1
LEAD
3.0
2.0)
(
10.16
0.7 0.1
12.0
5.08
7.5
1.21
20.5 0.4
b
a
1.0
JIS C5983
MU RECEPTACLE
1.3
(16)
b
a
L8231-23
0
(10)
L7551-23
b
a
9.25 0.1
13.45 0.1
+0.05
2.0 0.1
1.57 0.1
5.5 0.1
M8
0.75 P
(2 ) 2.2 0.1
7.95 0.1
19
-0.25
JIS C5970
FC RECEPTACLE
2.0)
(
0.45 0.1
LEAD
(2 ) 4.2 0.1
8.8
(16)
b
a
L8231-32
7.5
(10)
L7551-32
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. 2002 Hamamatsu Photonics K.K.
Cat. No. KLED1018E04
Jan. 2002 DN
2
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