-1-

Nichia STSE-CH4023A

<Cat.No.040423>

1.SPECIFICATIONS
(1) Absolute Maximum Ratings (Ta=25癈)

Item

Symbol

Absolute Maximum Rating

Unit

Forward Current

25 mA

Pulse Forward Current

Allowable Reverse Current

85 mA

Power Dissipation

100

Operating Temperature

opr

-30 ~ +

85 癈

Storage Temperature

stg

-40 ~ +100

癈

Soldering Temperature

sld

265癈 for 10sec.

Conditions : Pulse Width 10msec. and Duty 1/10

(2) Initial Electrical/Optical Characteristics

(Ta=25癈)

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Forward Voltage

=20[mA]

3.6

4.0

Peak Wavelength

Rank Ua

=20[mA]

360 365 370 nm

Spectrum Half Width

=20[mA]

10 -

Rank 2

=20[mA] 850 1000 1200 礧

Rank 3

=20[mA] 1200 1400 1700 礧

Optical Power Output

Rank 4

=20[mA] 1700 2000 2400 礧

! Optical Power Output Measurement allowance is �10%.

!! Peak Wavelength Measurement allowance is �3nm.
!!! One delivery will include up to three different ranks of the products.

The quantity-ratio of the three ranks is decided by Nichia.

2.TYPICAL INITIAL OPTICAL/ELECTRICAL CHARACTERISTICS

Please refer to figure's page.

3.OUTLINE DIMENSIONS AND MATERIALS

Please refer to figure's page.
Material as follows ; Glass : Hard Glass

Material as follows ;

Cap

: Ni Plating Iron Alloy

Material as follows ;

Lead

: Au Plating Iron Alloy

-2-

Nichia STSE-CH4023A

<Cat.No.040423>

4.PACKAGING

� The LEDs are packed in cardboard boxes after packaging in anti-electrostatic bags.
Please refer to figure's page.
The label on the minimum packing unit shows ; Part Number, Lot Number, Ranking, Quantity
� In order to protect the LEDs from mechanical shock, we pack them in cardboard boxes for transportation.
� The LEDs may be damaged if the boxes are dropped or receive a strong impact against them,
so precautions must be taken to prevent any damage.

� The boxes are not water resistant and therefore must be kept away from water and moisture.
� When the LEDs are transported, we recommend that you use the same packing method as Nichia.

5.LOT NUMBER

The first six digits number shows lot number.
The lot number is composed of the following characters;
"#$$$$ - !%

" - Year ( 3 for 2003, 4 for 2004 )

# - Month ( 1 for Jan., 9 for Sep., A for Oct., B for Nov. )

$$$$

- Nichia's Product Number

! - Ranking by Wavelength

- Ranking by Optical Power Output

-3-

Nichia STSE-CH4023A

<Cat.No.040423>

6.RELIABILITY

(1) TEST ITEMS AND RESULTS

Test Item

Standard
Test Method

Test Conditions

Note

Number of
Damaged

Resistance to
Soldering Heat

JEITA ED-4701

300 302

Tsld=260 � 5癈, 10sec.

3mm from the base of the lead

1 time

0/100

Solderability

JEITA ED-4701

300 303

Tsld=235 � 5癈, 5sec.
(using flux)

1 time

over 95%

0/100

Thermal Shock

JEITA ED-4701

300 307

0癈 ~ 100癈
15sec. 15sec.

100 cycles

0/100

Temperature Cycle

JEITA ED-4701

100 105

-40癈 ~ 25癈 ~ 100癈 ~ 25癈
30min.

5min.

30min.

5min.

100 cycles

0/100

Moisture Resistance Cyclic

JEITA ED-4701

200 203

25癈 ~ 65癈 ~ -10癈
90%RH 24hrs./1cycle

10 cycles

0/100

Terminal Strength
(bending test)

JEITA ED-4701

400 401

Load 5N (0.5kgf)
0� ~ 90� ~ 0� bend 2 times

No noticeable
damage

0/100

Terminal Strength
(pull test)

JEITA ED-4701

400 401

Load 10N (1kgf)
10 � 1 sec.

No noticeable
damage

0/100

High Temperature Storage

JEITA ED-4701

200 201

Ta=100癈

1000hrs.

0/100

Temperature Humidity
Storage

JEITA ED-4701

100 103

Ta=60癈, RH=90%

1000hrs.

0/100

Low Temperature Storage

JEITA ED-4701

200 202

Ta=-40癈

1000hrs.

0/100

Steady State Operating Life

Ta=25癈, I

=25mA 500hrs.

0/100

Steady State Operating Life
of High Humidity Heat

60癈, RH=90%, I

=15mA 500hrs.

0/100

Steady State Operating Life
of Low Temperature

Ta=-30癈, I

=20mA

1000hrs. 0/100

(2) CRITERIA FOR JUDGING THE DAMAGE

Criteria for Judgement

Item

Symbol

Test Conditions

Min. Max.

Forward Voltage

=20mA -

U.S.L.*)$ 1.1

Optical Power Output

=20mA L.S.L.**)$ 0.7

*) U.S.L.

Upper Standard Level **) L.S.L.

Lower Standard Level

-4-

Nichia STSE-CH4023A

<Cat.No.040423>

7.CAUTIONS

(1) Cautions

� The devices are UV light LEDs. The LED during operation radiates intense UV light,

which precautions must be taken to prevent looking directly at the UV light with unaided eyes.
Do not look directly into the UV light or look through the optical system. When there is a possibility
to receive the reflection of light, protect by using the UV light protective glasses so that light should not
catch one's eye directly.
� Put the caution label on the cardboard box.

(2) Lead Forming
� When forming leads, the leads should be bent at a point at least 3mm from the base of the lead.
Do not use the base of the leadframe as a fulcrum during lead forming.
� Lead forming should be done before soldering.
� Do not apply any bending stress to the base of the lead. The stress to the base may damage the LED's
characteristics or it may break the LEDs.
� When mounting the LEDs onto a printed circuit board, the holes on the circuit board should be exactly
aligned with the leads of the LEDs. If the LEDs are mounted with stress at the leads, it causes
deterioration of the lead and this will degrade the LEDs.

(3) Storage

� The LEDs should be stored at 30癈 or less and 70%RH or less after being shipped from Nichia and
the storage life limits are 3 months. If the LEDs are stored for 3 months or more, they

can be stored

for a year in

a sealed container with a nitrogen atmosphere and moisture absorbent material.

� Nichia LED leads are comprised of a gold plated Iron alloy. The gold surface may be
affected by environments which contain corrosive gases and so on. Please avoid conditions which
may cause the LED to corrode, tarnish or discolor. This corrosion or discoloration may cause difficulty
during soldering operations. It is recommended that the

LEDs be used

as soon as possible.

� Please avoid rapid transitions in ambient temperature, especially, in high humidity environments where
condensation can occur.

(4) Static Electricity
� Static electricity or surge voltage damages the LEDs.
It is recommended that a wrist band or an anti-electrostatic glove be used when handling the LEDs.
� All devices, equipment and machinery must be properly grounded. It is recommended that measures
be taken against surge voltage to the equipment that mounts

LEDs.

� When inspecting the final products in which LEDs were assembled, it is recommended to check
whether the assembled LEDs are damaged by static electricity or not. It is easy to find static-damaged
LEDs by a

light-on test or

test at a

lower current (below 1mA is recommended). The LEDs

should be used the light detector etc. when testing the light-on. Do not stare into the LEDs when testing.

� Damaged LEDs will show some unusual characteristics such as the

forward voltage becomes lower,

or the LEDs do not light at the low current.

Criteria : (V

> 2.0V at I

=0.5mA)

UV LED

LED RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LED PRODUCT

LED

1M LED

-5-

Nichia STSE-CH4023A

<Cat.No.040423>

(5) Soldering Conditions
� Solder the LED no closer than 3mm from the base of the lead.
� Recommended soldering conditions

Dip Soldering

Soldering

Pre-Heat
Pre-Heat Time
Solder Bath
Temperature
Dipping Time
Dipping Position

120癈 Max.
60 seconds Max.
260癈 Max.

10 seconds Max.
No lower than 3 mm from the
base of the lead.

Temperature
Soldering Time
Position

350癈 Max.
3 seconds Max.
No closer than 3 mm from the
base of the lead.

� Do not apply any stress to the lead particularly when heated.
� The LEDs must not be repositioned after soldering.
� After soldering the LEDs, the lead should be protected from mechanical shock or vibration until
the LEDs return to room temperature.
� Direct soldering onto a PC board should be avoided. Mechanical stress to the glass may be caused
from warping of the PC board or from the clinching and cutting of the leads. When it is
absolutely necessary, the LEDs may be mounted in this fashion but the User will assume responsibility
for any problems. Direct soldering should only be done after testing has confirmed that no damage

such as wire bond failure or glass deterioration

will occur. Nichia's LEDs should not be soldered

directly to double sided PC boards because the heat will deteriorate the glass.
� When it is necessary to clamp the LEDs to prevent soldering failure, it is important to minimize
the mechanical stress on the LEDs.
� Cut the LED leads at room temperature. Cutting the leads at high temperatures may
cause failure of the LEDs.

(6) Heat Generation
� Thermal design of the end product is of paramount importance. Please consider the heat generation
of the LED when making the system design. The coefficient of temperature increase per input
electric power is affected by the thermal resistance of the circuit board and density of LED placement
on the board, as well as other components. It is necessary to avoid intense heat generation and operate
within the maximum ratings given in this specification.
� The operating current should be decided after considering the ambient maximum temperature of LEDs.

(7) Cleaning
� It is recommended that isopropyl alcohol be used

as a solvent for cleaning the LEDs. When using

other solvents, it should be confirmed beforehand

whether the solvents will

dissolve the resin or not.

Freon solvents should not be used to clean the LEDs because of worldwide regulations.
� Do not clean the LEDs by the ultrasonic. When it is absolutely necessary, the influence of ultrasonic
cleaning on the LEDs depends on factors such as ultrasonic power and the assembled condition.
Before cleaning, a pre-test should be done to confirm whether any damage to the LEDs

will occur.

-6-

Nichia STSE-CH4023A

<Cat.No.040423>

(8) Safety Guideline for Human Eyes
� In 1993, the International Electric Committee (IEC) issued a standard concerning laser product safety
(IEC 825-1). Since then, this standard has been applied for diffused light sources (LEDs) as well as
lasers. In 1998 IEC 60825-1 Edition 1.1 evaluated the magnitude of the light source.
In 2001 IEC 60825-1 Amendment 2 converted the laser class into 7 classes for end products.
Components are excluded from this system. Products which contain visible LEDs are now classified
as class 1. Products containing UV LEDs are class 1M. Products containing LEDs can be classified
as class 2 in cases where viewing angles are narrow, optical manipulation intensifies the light, and/or the
energy emitted is high. For these systems it is recommended to avoid long term exposure.

It is also recommended to follow the IEC regulations regarding safety and labeling

of products.

(9) Others
� The LEDs described in this brochure are intended to be used for ordinary electronic equipment (such
as office equipment, 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 systems, automobiles, traffic control equipment, life support systems and safety devices).
� User shall not reverse engineer by disassembling or analysis of the LEDs without having the prior
written consent of Nichia. When defective LEDs are found, User shall inform to Nichia directly
before disassembling or analysis.
� The formal specifications must be exchanged and signed by both parties before large volume purchase begins.
� The appearance and specifications of the product may be modified for improvement without notice.

200

100

10 20

100

Allo

wabl

e

Fo

rwa

r
d
Cu

t I

(mA

)

e
l
a
t
i
ve

o
w

e
r

O

u
t
p
u
t

(

a
.u

e
la

ti
v
e

u
t
p
u
t

(
a
.
u
.)

Forward Current I

(mA)

l
owa

b
l
e

rward C

urren

t
I

(mA

)

Ambient Temperature vs.

Allowable Forward Current

Ambient Temperature Ta (癈)

Ambient Temperature vs.

Relative Power Output

Ambient Temperature Ta (癈)

Ambient Temperature vs.

Forward Voltage

Ambient Temperature Ta (癈)

a
r
d
V

o
ltag

e

V

)

Duty Ratio (%)

Forward Current vs.

Relative Power Output

rward C

u
rren

t
I

(mA

)

Forward Voltage V

(V)

Forward Voltage vs.

Forward Current

Duty Ratio vs.

Allowable Forward Current

Ta=25癈

2.5

3.0

3.5

4.0

4.5

5.0

200

100

Ta=25癈

60 80 100

-40 -20

4.0

3.8

3.4

3.2

3.6

3.3

3.5

3.7

3.9

=20mA

100 120

Ta=25癈

60 80 100

-40 -20

2.0

1.0

0.2

0.5

=20mA

i
c
h
i
a
STSE-CH4023A

.
No.
040423

-7-

Model

NSHUxxxB

NICHIA CORPORATION

Title

No.

040319424791

CHARACTERISTICS

Forward Current I

(mA)

Ambient Temperature vs.

Peak Wavelength

Forward Current vs.

Peak Wavelength

Ambient Temperature Ta (癈)

Spectrum

Directivity

a
k
W

a
v
e
le

t
h

p (nm

)

a
k
Wa

vel

e
n
g
t
h

p (

n
m

)

Wavelength

(nm)

Relativ

e

Emissi

n
ten

s
i
t
y
(

a
.u

Radiation Angle

Rela

t
i
ve P

o
we

u
t
p
ut

(a.u.)

50 100

371

367

361

369

365

363

Ta=25癈

300 350 400 450

550 600

500

1.2

1.0

0.8

0.4

0.2

0.6

60 80 100

-40 -20

371

367

361

369

365

363

=20mA

1.0

0.5

0�

30�

0.5

90�

60�

1.0

0�

10� 20�

30�

40�

50�

60�

70�

80�

90�

Ta=25癈

=20mA

Ta=25癈

=20mA

-8-

i
c
h
i
a
STSE-CH4023A

.
No.
040423

Model

NSHU590B

NICHIA CORPORATION

Title

No.

040319424771

CHARACTERISTICS

Anti electrostatic bag

Cardboard box
360!135!215!4t

Cardboard

The quantity is printed on this bag.

One box contains 8 bags at maximum.

Label

Caution Label

Put the label and caution label on the cardboard box.

UV LED

LED RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LED PRODUCT

LED

1M LED

CAUTION TO
ELECTROSTATIC DAMAGE

N I C H I A

LED

TYPE NSHUxxx

LOT xxxxxx-!#
QTY pcs

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN

U V L E D

L ED R A D IA TIO N

D O N OT V IEW D IRE CT LY W IT H

O PTIC AL IN ST RU M EN TS

C LASS 1M LED PR OD U CT

LE D

1M LED

LED

TYPE NSHUxxx
RANK

QTY PCS

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA,

JAPAN

NICHIA

-10-

Nichia STSE-CH402

3
A

<Cat.No.040423>

NICHIA CORPORATION

No.

PACKING

030826314421

Title

Model

NSHUxxx

Anti-electrostatic bag

Cardboard box B
360!135!215!4t

Cardboard

Cardboard box A

The cardboard box B contains

2 cardboard box A at maximum.

The quantity is printed on this bag.

Put the label on the cardboard box B.

Label

Caution Label

Put the caution label on the cardboard box A.

UV LED

LED RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LED PRODUCT

LED

1M LED

CAUTION TO
ELECTROSTATIC DAMAGE

N I C H I A

LED

TYPE NSHUxxx

LOT xxxxxx-!#
QTY pcs

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN

U V L E D

L ED R A D IA TIO N

D O N OT V IEW D IRE CT LY W IT H

O PTIC AL IN ST RU M EN TS

C LASS 1M LED PR OD U CT

LE D

1M LED

LED

TYPE NSHUxxx
RANK

QTY PCS

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA,

JAPAN

NICHIA

-11-

Nichia STSE-CH402

3
A

<Cat.No.040423>

NICHIA CORPORATION

No.

PACKING

030826314431

Title

Model

NSHUxxx

Cardboard box
425!135!355!4t

Cardboard

Anti-electrostatic bag

The quantity is printed on this bag.

One box contains 20 bags at maximum.

Caution Label

Label

Put the label and caution label on the cardboard box.

UV LED

LED RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LED PRODUCT

LED

1M LED

CAUTION TO
ELECTROSTATIC DAMAGE

N I C H I A

LED

TYPE NSHUxxx

LOT xxxxxx-!#
QTY pcs

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN

U V L E D

L ED R A D IA TIO N

D O N OT V IEW D IRE CT LY W IT H

O PTIC AL IN ST RU M EN TS

C LASS 1M LED PR OD U CT

LE D

1M LED

LED

TYPE NSHUxxx
RANK

QTY PCS

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA,

JAPAN

NICHIA

-12-

Nichia STSE-CH402

3
A

<Cat.No.040423>

NICHIA CORPORATION

No.

PACKING

030826314441

Title

Model

NSHUxxx

The cardboard box B contains 4 cardboard box A at maximum.

Anti-electrostatic bag

Cardboard box B
425!135!355!4t

Cardboard

Cardboard box A

Cardboard

Put the label on the cardboard box B.

Label

The quantity is printed on this bag.

Put the caution label on the cardboard box A.

Caution Label

UV LED

LED RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LED PRODUCT

LED

1M LED

CAUTION TO
ELECTROSTATIC DAMAGE

N I C H I A

LED

TYPE NSHUxxx

LOT xxxxxx-!#
QTY pcs

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN

U V L E D

L ED R A D IA TIO N

D O N OT V IEW D IRE CT LY W IT H

O PTIC AL IN ST RU M EN TS

C LASS 1M LED PR OD U CT

LE D

1M LED

LED

TYPE NSHUxxx
RANK

QTY PCS

NICHIA CORPORATION

491 OKA, KAMINAKA, ANAN, TOKUSHIMA,

JAPAN

NICHIA

-13-

Nichia STSE-CH402

3
A

<Cat.No.040423>

NICHIA CORPORATION

No.

PACKING

030826314451

Title

Model

NSHUxxx

协谢械泻褌褉芯薪薪褘泄 泻芯屑锌芯薪械薪褌: NSHU590B

协谢械泻褌褉芯薪薪褘泄泻芯屑锌芯薪械薪褌: NSHU590B