NHSL157A-H3 Nichia, NHSL157A-H3 Datasheet - Page 18

• Manufacturer Part Number: NHSL157A-H3
• Manufacturer: Nichia

Specifications of NHSL157A-H3

• Size Lxwxh (mm): 3.0x1.4x0.52
• Lumi-nous Inten-sity Typ(cd): 2.1
• Lumi-nous Flux Typ(lm)): 6.0
• Ra Min: 80
• Forward Voltage Vf(v) Typ: 3.10
• Forward Voltage Vf(v) Max: 3.40
• Directivity (degree): 120
• If (ma): 20
• Mounting Style: Through Hole

(6) Thermal Management
(7) Cleaning
(8) Eye Safety
(9) Others
● Thermal management is an important factor when designing your product by using the LEDs.
● Drive current should be determined for the surrounding ambient temperature (T
● If required, isopropyl alcohol (IPA) should be used. Other solvents may cause premature failure to the LEDs
● Ultrasonic cleaning is not recommended for the LEDs since it may adversely effect on the LEDs
● The International Electrical Commission (IEC) published in 2006, IEC 62471:2006 Photobiological safety of lamps
● Viewing a flashing light may cause eye discomfort. When incorporating the LED into your product,
● The LEDs described in this brochure are intended to be used for ordinary electronic equipment (such as office equipment,
● The customer shall not reverse engineer by disassembling or analysis of the LEDs without having prior written consent
● Customer and Nichia shall agree the official specification of supplied products prior to the start of a customer’s volume production.
● The appearance and specifications of the product may be modified for improvement without notice.
The rise in LED die temperature can be affected by PCB thermal resistance or/and LED spacing as mounted on the board.
Customer is advised to design the product to ensure that the LED die temperature
does not exceed the required maximum Junction Temperature (T
1) T
due to the damage to the resin portion. The effects of such solvents should be verified prior to use.
In addition, the use of CFCs such as Freon is heavily regulated.
by the ultrasonic power and LED assembled condition.
If it is unavoidable, customer is advised to check prior to use that the cleaning will not damage the LEDs.
and lamp systems which includes LEDs within its scope. Meanwhile LEDs were removed from the scope
of the IEC 60825-1:2007 laser safety standard, the 2001 edition of which included LED sources within its scope.
However, keep it mind that some countries and regions have adopted standards based on the IEC laser safety standard
IEC 60825-1:2001 which includes LEDs within its scope. Following IEC 62471:2006, most of Nichia LEDs can be classified
as belonging to either Exempt Group or Risk Group 1. Especially a high-power LED, that emits light containing blue wavelengths,
may be in Risk Group 2. Great care should be taken when viewing directly the LED driven at high current or the LED
with optical instruments, which greatly increase the hazard to your eyes.
precaution should be taken to avoid adverse effect on human body caused by the light stimulus.
communications equipment, measurement instruments and household appliances).
Consult Nichia's sales staff in advance for information on the applications in which exceptional quality
and reliability are required, particularly when the failure or malfunction of the LEDs may directly jeopardize life or
health (such as for airplanes, aerospace, submersible repeaters, nuclear reactor control system, automobiles,
traffic control equipment, life support systems and safety devices).
from Nichia. When defective LEDs are found, the customer shall inform Nichia directly before disassembling or analysis.
*T
T
T
R
R
J
=T
A
S
θJA
θJS
J
=LED junction temperature: °C
=Ambient temperature: °C
=Soldering temperature (cathode side): °C
A
=Thermal resistance from junction to ambient: °C/W
=Thermal resistance from junction to T
+R
Ts Point
θJA
･W
2) T
J
=T
S
+R
θJS
･W
S
measuring point: °C/W
J
).
A
) to dissipate the heat from the product.
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