SONY SLD231VL

SLD231VL
Index-Guided High Power AlGaAs Laser Diode
For the availability of this product, please contact the sales office.
Description
The SLD231VL is a high-power, index-guided AlGaAs
laser diode.
M-274
Features
• Low current consumption
• Small astigmatism
• Small package (φ5.6mm)
Applications
Pickup for optical discs
Structure
• AlGaAs quantum well structured laser diode
• PIN photodiode for optical power output monitor
Recommended Operating Optical Power Output
Absolute Maximum Ratings (Tc = 25°C)
• Optical power output
PO
• Reverse voltage
VR
• Operating temperature
• Storage temperature
Connection Diagram
3
Topr
Tstg
LD
PD
35mW
40
2
15
–10 to +60
–40 to +85
Pin Configuration
COMMON
PD
2
LD
2
mW
V
V
°C
°C
1
1
3
1. LD anode
2. PD anode
3. COMMON
Bottom View
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E94Y22B97-PS
SLD231VL
Optical and Electrical Characteristics (Tc = 25°C)
Item
Symbol
Tc: Case temperature
Conditions
Min.
Typ.
Max.
Unit
10
20
40
mA
Threshold current
Ith
Operating current
Iop
PO = 35mW
35
55
70
mA
Operating voltage
Vop
PO = 35mW
—
2.0
2.5
V
Wavelength
λ
PO = 35mW
780
790
800
nm
20
24
28
degree
7
9
12
degree
—
—
±80
µm
—
—
±3
degree
—
—
±3
degree
Radiation
angle
Positional
accuracy
Perpendicular
θ⊥
Parallel
θ//
Position
∆X, ∆Y, ∆Z
Angle
∆φ⊥
PO = 35mW
PO = 35mW
∆φ//
Differential efficiency
ηD
PO = 35mW
0.7
1.0
1.3
mW/mA
Astigmatism
As
PO = 35mW
—
—
6
µm
Monitor current
Im
PO = 35mW, Vr = 5V
—
0.10
—
mA
Handling Precautions
(1) Eye protection against laser beams
The optical output of laser diodes ranges from
several mW to 4W. However the optical power
density of the laser beam at the diode chip
reaches 1MW/cm2. Unlike gas lasers, since
laser diode beams are divergent, uncollimated
laser diode beams are fairly safe at a laser
diode. For observing laser beams, ALWAYS
use safety goggles that block infrared rays.
Usage of IR scopes, IR cameras and
fluorescent plates is also recommended for
monitoring laser beams safely.
Safety goggles for
protection from laser beam
Laser diode
Lens
Optical
material
IR fluorescent plate
Optical board
Optical power output control device
Temperature control device
(2) Prevention of surge current and electrostatic discharge
Laser diode is most sensitive to electrostatic discharge among semiconductors. When a large current is
passed through the laser diode even for an extremely short time (in the order of nanosecond), the strong light
emitted from the laser diode promotes deterioration and then laser diodes are destroyed. Therefore, note that
the surge current should not flow the laser diode driving circuit from switches and others. Also, if the laser
diode is handled carelessly, it may be destructed instantly because electrostatic discharge is easily applied by
a human body. Be great careful about excess current and electrostatic discharge.
–2–
SLD231VL
Package Outline
Unit: mm
M-274
Reference
Slot
0.4
1.0
0.5
90°
3
1
2
0
φ5.6 – 0.025
φ4.4 MAX
φ3.7 MAX
φ1.0 MIN
1.2 ± 0.1
Reference
Plane
2 3 1
3 – φ0.45
∗Optical
Distance = 1.35 ± 0.08
6.5
LD Chip
& Photo
Diode
SONY CODE
2.6 MAX
0.5 MIN
∗1.26
0.25
Window Glass
PCD φ2.0
M-274
PACKAGE WEIGHT
EIAJ CODE
JEDEC CODE
–3–
0.3g