Product Specification
Lasermate Group, Inc. LD1550A20C25 R01.1220
LD1550A20C25
1550nm 20mW 50
o
C Laser Diode in TO-18 φ5.6mm Package
Description
The Lasermate LD1550A20C25 is a 1550nm, 20mW laser diode in a φ5.6mm, TO-can package and with wide
operating temperature range of up to 50
o
C. The laser diode is suitable as laser light source for many
applications.
Features
• 1550nm Infrared laser diode
• Optical output power: 20mW CW
• Operating temperature: +50
o
C
• Efficient Quantum Well Structure
• Built-in monitor photodiode
• Package: TO-18 (dia. 5.6mm)
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Optical output power
P
O
20
mW
Reverse voltage (LD)
V
RL
2
V
Operating temperature
T
opr
-20 to +50
o
C
Storage temperaturep
T
stg
-40 to +85
o
C
Electrical and Optical Characteristics (T
C
= 25
o
C)
Parameter
Symbol
Typ.
Unit
Peak wavelength
λ
p
1550±5
nm
Optical output power
P
O
20
mW
Threshold current
I
th
≤0.01
A
Operating current
I
op
≤0.09
A
Operating voltage
V
op
≤1.3
V
Slope efficiency
η
≥0.8
W/A
PD Reverse current
I
rp
2
mA
PD Reverse voltage
V
rp
20
V
Parallel divergence angle
Ɵ
//
≤9
deg
Perpendicular divergence angle
Ɵ
���
≤20
deg
Spectrum FWHM
<0.3
Nm
Polarization
TE
LD1550A20C25 Product Specification 1550nm 20mW 50
o
C CW Laser Diode TO-18, Dia. 5.6mm Package
Lasermate Group, Inc. LD1550A20C25 R01.1220
Mechanical Outline (unit: mm)
Pin Configuration
Additional Notes
• Do not operate the device above maximum ratings. Doing so may cause unexpected and permanent
damage to the device.
• Take precautions to avoid electrostatic discharge and/or momentary power spikes. A change in the
characteristics of the laser or premature failure may result.
• Proper heat sinking of the device assures stability and lifetime. Always ensure that maximum operating
temperatures are not exceeded.
• Observing visible or invisible laser beams with human eye directly, or indirectly, can cause permanent
damage. Use a camera to observe the laser.
• No laser device should be used in any application or situation where life or property is at risk in the
event of device failure.
• Specifications are subject to change without notice. Ensure that you have the latest specification by
contacting us prior to purchase or use of the product.