Laser Diode
Nov 1, 2015
SPECIFICATIONS
Infrared Eye-safe Laser Diode
GH4945A1TG
Notice
Contents in this technical document be changed without any notice due to the product modification.
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any
defects that may occur in wquipment using any SHARP devices shown in catalogs, data books, etc.
LIGHTING DEVICE BUSINESS UNIT
ELECTRONIC COMPONENTS AND DEVICES COMPANY
http://www.sharp-world.com/products/device/
SHARP CORPORATION
sharp LD-E15-4-15-A
Model No. GH4945A1TG
Contents in this technical document be changed without any notice due to the product modification.
http://www.sharp-world.com/products/device/
■Notice
1. These specification sheets include materials protected under the copyright of Sharp Corporation ("Sharp").
Please do not reproduce or cause anyone to reproduce them without Sharp's consent.
2. When using this product, please observe the absolute maximum ratings and the instructions for use outlined
in these specification sheets, as well as the precautions mentioned below. Sharp assumes no responsibility
for any damage resulting from use of the product which does not comply with the absolute maximum ratings
and the instructions included in these specification sheets, and the precautions mentioned below.
(Precautions)
(1) Please do verify the validity of this part after assembling it in customerʼs products, when customer
wants to make catalogue and instruction manual based on the specification sheet of this part.
(2) This products is designed for use in the following application areas;
* OA equipment
* Audio visual equipment
* Home appliance
* Telecommunication equipment (Terminal)
* Measuring equipment
* Tooling machines
* Computers
If the use of the product in the above application areas is for equipment listed in paragraphs
(2) or (3), please be sure to observe the precautions given in those respective paragraphs.
(3) Appropriate measures, such as fail-safe design and redundant design considering
the safety design of the overall system and equipment, should be taken to ensure reliability
and safety when this product is used for equipment which demands high reliability and
safety in function and precision, such as ;
* Transportation control and safety equipment (aircraft, train, automobile etc.)
* Traffic signals * Gas leakage sensor breakers
* Rescue and security equipment * Other safety equipment
(4) Please do not use this product for equipment which require extremely high reliability
and safety in function and precision, such as ;
* Space equipment
* Telecommunication equipment (for trunk lines)
* Nuclear power control equipment
* Medical equipment
(5)Please contact and consult with a Sharp sales representative if there are any questions
reg arding interpretation of the above three paragraphs.
3. Please contact and consult with a Sharp sales representative for any questions about this product.
1
sharp LD-E15-4-15-A
Model No. GH4945A1TG
Contents in this technical document be changed without any notice due to the product modification.
http://www.sharp-world.com/products/device/
■Notice
4. Disclaimer
The warranty period for Sharp product is one (1) year (or six (6) months in case of generalized product)
after shipment.
During the period, if there are any products problem, Sharp will repair (if applicable), replace or refund.
Except the above, both parties will discuss to cope with the problems.
The failed Sharp product after the above one (1) year ( or six (6) month for generalized product) period
will be coped
with by Sharp, provided that both parties shall discuss and determine on sharing responsibility based on the
analysis results
thereof subject to the above scope of warranty.
The warranty described herein is only for Sharp product itself which are purchased by or delivered to customer.
Damages arising from Sharp product malfunction or failure shall be excepted.
Sharp will not be responsible for the Sharp product due to the malfunction or failures thereof which are
caused by:
(1) storage keep trouble during the inventory in the marketing channel.
(2) intentional act, negligence or wrong/poor handling.
(3) equipment which Sharp products are connected to or mounted in.
(4) disassembling, reforming or changing Sharp products.
(5) installation problem.
(6) act of God or other disaster (natural disaster, fire, flood, etc.)
(7) external factors (abnormal voltage, abnormal electromagnetic wave, fire, etc.)
(8) special environment (factory, coastal areas, hot spring area, etc.)
(9) phenomenon which cannot be foreseen based on the practical technologies at the time of shipment.
(10) the factors not included in the product technical sheet.
5. Please contact and consult with a Sharp sales representative for any questions about Sharp product.
2
sharp LD-E15-4-15-A
Model No. GH4945A1TG
Contents in this technical document be changed without any notice due to the product modification.
http://www.sharp-world.com/products/device/
Infrared Eye-safe Laser Diode
■ Features ■ Absolute Maximum Ratings
（１） Wavelength : 940 nm（Typ.）
Parameter
Symbol
Ratings
Unit
Forward Current(CW)
Iop
1
A
Reverse voltage
Vrl
2
V
70
℃
（２） Optical power output :
CW 500 mW
（３） Φ 5.6 mm CAN package
（４） IEC 60825-1 Class1
（Tc = 25 ℃）
※１
Operating temperature（※1） Top（C）
■ Applications
（１） Laser sensor
（２） other application
Storage temperature
Tstg
-40 ～ +85
℃
Soldering temperature (※2)
Tsld
350
℃
※1
Tc︓Case temperature
※2
Soldering temperature means soldering iron tip temperature.
Soldering position is 1.6mm apart from bottom edge of the case.
(Immersion time: ≦3s)
■ technicals
（Tc = 25 ℃）
※１,※2
Parameter
Threshold current
Symbol
Conditions
TYP.
Unit
Ith
-
315
mA
Optical Power output
Φe
350
mW
Operating voltage
Vop
1.78
V
Peak wavelength
λp
940
nm
Center wavelength
λc
940
nm
21
°
25
°
25
％
(※3, ※4)
Parallel
Θ
Perpendicular
Θ
Wall Plug Efficiency
”
T
Half intensity angle
Iop = 790 mA
WPE
※1
Tc︓Case temperature
※2
Initial value, Continuous Wave Operation
※3
Angle of 50% peak intensity (Full angle at half-maximum)
※4
Parallel to the junction plane (X-Z plane) Perpendicular to the junction plane (Y-Z plane)
3
sharp LD-E15-4-15-A
Model No. GH4945A1TG
Contents in this technical document be changed without any notice due to the product modification.
http://www.sharp-world.com/products/device/
■ Connections and outline dimensions
0.4 ± 0.1
1
2
Φ2
1 ± 0.15
X
Y
3
Φ 5.6 + 0
-0.025
Terminal connections
2 Stem
（Φ 2.7）
（3.0）
3
2.3 ± 0.5
LASER cathode
1
LASER anode
1.2 ± 0.1
【REFERENCE】
This drawing is subject to change without notice
0.5 MAX
6.5 ± 0.5
due to our product improvement.
Φ 1.2 MAX
3 - Φ 0.45 ± 0.1
2
1,
3
4
sharp LD-E15-4-15-A
http://www.sharp-world.com/products/device/
（Notice）
･In the absence of confirmation by device technical sheets. SHARP takes no responsibility for any defects that may
occur in equipment using any SHARP devices shown in catalogs, data books, etc. Contact SHARP in order to obtain
the latest device technical sheets before using any SHARP device.
･technicals are subject to change without notice for improvement.
sharp LD-E15-4-15-A