Datasheet LTW-170ΤΚ Specification

LITE-ON TECHNOLOGY CORPORATION

Features

* Meet RoHS, Green Product.
*Ultra bright InGaN White Chip LED.
* Package in 8mm tape on 7" diameter reels.
* Compatible with automatic placement equipment.
* Compatible with infrared reflow solder process.
* EIA STD package.
* I.C. compatible.

Package Dimensions

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Notes:

1. All dimensions are in millimeters (inches).

2. Tolerance is ± 0.10 mm (.004") unless otherwise noted.

Part No. Lens Emitted Color

LTW-170TK

Yellow InGaN White

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Absolute Maximum Ratings At Ta=25℃℃℃℃

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Power Dissipation 70 mW

Peak Forward Current
(1/10 Duty Cycle, 0.1ms Pulse Width)

DC Forward Current 20 mA

Reverse Voltage 5 V

Operating Temperature Range -20°C to + 80°C

Storage Temperature Range -55°C to + 105°C

Infrared Soldering Condition 260°C For 10 Seconds

Note: Reverse Voltage can’t be continued operating.

Suggest IR Reflow Condition :

Parameter LTW-170TK

100 mA

Unit

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Electrical Optical Characteristics At Ta=25℃

Parameter

Symbol

Part No.

℃

℃℃

Min. Typ. Max. Unit

Test Condition

LTW-

Luminous Intensity IV 170TK 112.0

450.0 mcd

IF = 20mA

Note 1, 2, 5

Viewing Angle 2θ1/2 170TK 130 deg Fig.6

IF = 20mA

Note 3, 5

Fig.1

Chromaticity Coordinates

x 0.25

170TK

y

0.22

Forward Voltage VF 170TK 2.8 3.8 V IF = 20mA

Reverse Current IR 170TK 10 µA VR = 5V

Note : 1. Luminous intensity is measured with a light sensor and filter combination that approximates the

CIE eye-response curve.

2. Iv classification code is marked on each packing bag.

3. The chromaticity coordinates (x, y) is derived from the 1931 CIE chromaticity diagram.

4. Caution in ESD:
Static Electricity and surge damages the LED. It is recommend to use a wrist band or anti-electrostatic
glove when handling the LED. All devices, equipment and machinery must be properly grounded.

5. Tester

PR704 is for the chromaticity coordinates (x, y).



EG&G is for Iv



6. The chromaticity coordinates (x, y) guarantee should be added ± 0.01 tolerance.

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Typical Electrical / Optical Characteristics Curves

(25 Ambient Temperature Unless Otherwise Noted)℃

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Bin Code List

VF Spec. Table

VF Bin

Forward Voltage

Min.

(V) at IF = 20mA

Max.
2 2.80 3.00
3 3.00 3.20
4 3.20 3.40
5 3.40 3.60
6 3.60 3.80

Tolerance on each Forward Voltage bin is +/-0.1 volt

IV Spec. Table

IV Bin

Luminous Intensity (mcd) at IF = 20mA

Min.

Max.

R 112.0 180.0
S 180.0 280.0
T 280.0 450.0

Tolerance on each Luminous Intensity bin is +/- 15%.

Hue Spec. Table

Hue Bin

K1

Color bin limits at IF = 20mA

CIE 1931Chromaticity coordinates

x

0.210 0.170

0.210 0.280

0.250 0.280

y

0.250 0.170

K2

x

0.250 0.170

0.250 0.280

y

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0.290 0.280

0.290 0.170

Tolerance on each Hue (x, y) bin is +/- 0.01.

C. I. E. 1931 Chromaticity Diagram

0.4

0.35

0.3

0.25

0.2

Y-coordinate

0.15

0.1

0.1 0.2 0.3 0.4

K1 K2

X-coordinate

LITE-ON TECHNOLOGY CORPORATION

Cleaning

Do not use unspecified chemical liquid to clean LED they could harm the package.

If clean is necessary, immerse the LED in ethyl alcohol or in isopropyl alcohol at normal temperature

for less one minute.

Suggest Soldering Pad Dimensions

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Package Dimensions Of Tape And Reel

Notes:

1. All dimensions are in millimeters (inches).

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Package Dimensions of Reel

LITE-ON TECHNOLOGY CORPORATION

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Notes:

1. Empty component pockets sealed with top cover tape.

2. 7 inch reel-3000 pieces per reel.

3. Minimum packing quantity is 500 pcs for remainders.

4. The maximum number of consecutive missing lamps is two.

5. In accordance with ANSI/EIA 481-1-A-1994 specifications.

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Notes:

1. There are 3 moisture barrier bags or less in inner carton.

2. There are 21 inner carton or less in a master carton.

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CAUTIONS

devices, solder pastes, reflow ovens,

based on JEDEC standards to ensure that all packages can be successfully

recommendations from the

1. Application

The LEDs described here are intended to be used for ordinary electronic equipment (such as office
equipment, communication equipment and household applications).Consult Liteon’s Sales in advance
for information on applications in which exceptional reliability is required, particularly when the failure
or malfunction of the LEDs may directly jeopardize life or health (such as in aviation, transportation,
traffic control equipment, medical and life support systems and safety devices).

2. Storage

The package is sealed:

The LEDs should be stored at 30°C or less and 90%RH or less. And the LEDs are limited to use within

one year, while the LEDs is packed in moisture-proof package with the desiccants inside.
The package is opened:
The storage ambient for the LEDs should not exceed 30°C temperature or 60% relative humidity.
It is recommended that LEDs out of their original packaging are IR-reflowed within 672hrs.
For extended storage out of their original packaging, it is recommended that the LEDs be stored in a sealed
container with appropriate desiccant, or in a desiccators with nitrogen ambient.
LEDs stored out of their original packaging for more than one week should be baked at about 60 deg C for at least
20 hours before solder assembly.

3. Cleaning

Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED if necessary.

4. Soldering
Recommended soldering conditions:

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Reflow soldering Soldering iron

Pre-heat
Pre-heat time
Peak temperature
Soldering time

150~200°C
120 sec. Max.
260°C Max.
10 sec. Max.(Max. two times)

Temperature
Soldering time

300°C Max.
3 sec. Max.
(one time only)

Soldering notes:

Because different board designs use different number and types of
and circuit boards, no single temperature profile works for all possible combinations.
However, you can successfully mount your packages to the PCB by following the proper guidelines and
PCB-specific characterization.

LITE-ON Runs both component-level verification using in-house KYRAMX98 reflow chambers and
board-level assembly.

The results of this testing are verified through post-reflow reliability testing.
Profiles used at LITE-ON are
and reliably surface mounted.
Figure on page3 shows a sample temperature profile compliant to JEDEC standards.
You can use this example as a generic target to set up your reflow process.
You should adhere to the JEDEC profile limits as well as specifications and
solder paste manufacturer to avoid damaging the device and create a reliable solder joint.

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5. Drive Method

An LED is a current-operated device. In order to ensure intensity uniformity on multiple LEDs connected
in parallel in an application, it is recommended that a current limiting resistor be incorporated in the
drive circuit, in series with each LED as shown in Circuit A below.

Circuit model A Circuit model B

LED

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LED

(A) Recommended circuit.
(B) The brightness of each LED might appear different due to the differences in the I-V characteristics

of those LEDs.

6. ESD (Electrostatic Discharge)

Static Electricity or power surge will damage the LED.
Suggestions to prevent ESD damage:

 Use of a conductive wrist band or anti-electrostatic glove when handling these LEDs.
 All devices, equipment, and machinery must be properly grounded.
 Work tables, storage racks, etc. should be properly grounded.
 Use ion blower to neutralize the static charge which might have built up on surface of the LED’s

plastic lens as a result of friction between LEDs during storage and handling.

ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, low forward
voltage, or “ no lightup ” at low currents.
To verify for ESD damage, check for “ lightup ” and Vf of the suspect LEDs at low currents.
The Vf of “ good ” LEDs should be >2.0V@0.1mA for InGaN product and >1.4V@0.1mA for AlInGaP
product.

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Environmental

7. Reliability Test

Classification

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Test Item Test Condition Reference Standard

Endurance

Test

Operation Life

High Temperature

High Humidity

Storage

High Temperature

Storage

Low Temperature

Storage

Temperature

Cycling

Thermal

Shock

Solder

Resistance

Ta= Under Room Temperature As Per Data Sheet
Maximum Rating
*Test Time= 500HRS (-24HRS,+72HRS)*@20mA.

Ta= 65±5℃,RH= 90～95%

Test Time= 240HRS±2HRS

*

Ta= 105±5℃

Test Time= 500HRS (-24HRS,+72HRS)

*

Ta= -55±5℃

Test Time=500HRS (-24HRS,+72H RS)

*

105℃ ～ 25℃ ～ -55℃ ～ 25℃
30mins 5mins 30mins 5mins
10 Cycles

85 ± 5℃ ～ -40℃ ± 5℃
10mins 10mins 10 Cycles

T.sol= 260 ± 5℃
Dwell Time= 10 ± 1secs

MIL-STD-750D:1026
MIL-STD-883D:1005
JIS C 7021:B-1

MIL-STD-202F:103B
JIS C 7021:B-11

MIL-STD-883D:1008
JIS C 7021:B-10

JIS C 7021:B-12

MIL-STD-202F:107D
MIL-STD-750D:1051
MIL-STD-883D:1010
JIS C 7021:A-4

MIL-STD-202F:107D
MIL-STD-750D:1051
MIL-STD-883D:1011

MIL-STD-202F:210A
MIL-STD-750D:2031
JIS C 7021:A-1

Test

IR-Reflow

Solderability

Ramp-up rate(217℃ to Peak) +3℃/ second max
Temp. maintain at 175(±25)℃ 180 seconds max
Temp. maintain above 217℃ 60-150 seconds
Peak temperature range 260℃+0/-5℃
Time within 5°C of actual Peak Temperature (tp)
10-30 seconds
Ramp-down rate +6℃/second max

T.sol= 235 ± 5℃
Immersion time 2±0.5 sec

Immersion rate 25±2.5 mm/sec
Coverage ≧95% of the dipped surface

MIL-STD-750D:2031.2
J-STD-020D

MIL-STD-202F:208D
MIL-STD-750D:2026
MIL-STD-883D:2003
IEC 68 Part 2-20
JIS C 7021:A-2

8. Others

The appearance and specifications of the product may be modified for improvement without prior notice.

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9. Suggested Checking List

Training and Certification

1. Everyone working in a static-safe area is ESD-certified?

2. Training records kept and re-certification dates monitored?

Static-Safe Workstation & Work Areas

1. Static-safe workstation or work-areas have ESD signs?

2. All surfaces and objects at all static-safe workstation and within 1 ft measure less than 100V?

3. All ionizer activated, positioned towards the units?

4. Each work surface mats grounding is good?

Personnel Grounding

1. Every person (including visitors) handling ESD sensitive (ESDS) items wears wrist strap, heel

strap or conductive shoes with conductive flooring?

2. If conductive footwear used, conductive flooring also present where operator stand or walk?

3. Garments, hairs or anything closer than 1 ft to ESD items measure less than 100V*?

4. Every wrist strap or heel strap/conductive shoes checked daily and result recorded for all DLs?

5. All wrist strap or heel strap checkers calibration up to date?
Note: *50V for Blue LED.

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Device Handling

1. Every ESDS items identified by EIA-471 labels on item or packaging?

2. All ESDS items completely inside properly closed static-shielding containers when not at
static-safe workstation?

3. No static charge generators (e.g. plastics) inside shielding containers with ESDS items?

4. All flexible conductive and dissipative package materials inspected before reuse or recycles?

Others

1. Audit result reported to entity ESD control coordinator?

2. Corrective action from previous audits completed?

3. Are audit records complete and on file?

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