Technical

Z-Power LED
Data
X10490

Specification
Sheet

LT770D

SSC Customer
Drawn Approval Approval

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

Contents
Data
X10490
Sheet

1. Features

2. Absolute Maximum Ratings

3. Electric-Optical Characteristics

4. Reliability Tests

5. Characteristic Diagrams

6. Color & Binning

7. Outline Dimensions

8. Packing

9. Soldering

10. Precaution for use

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

LT770D LT770D
Data
X10490
Sheet

Description Features
• Non-standoff leads
• 5mm type package
Lamp LEDs are effective in hot thermal • Color Diffused
and humid condition. This high brightness epoxy lens
• Viewing angle
and weather-resistant packaging design : 70/40 º
makes these Lamp LEDs ideal for • Dominant Wavelength
:525nm
Outdoor applications such as traffic

signals, variable message signs and

Applications
backlighting for transparent sign panels.
• Electronic signs
and signals
• Specialty lighting
• Small area illumination
• Backlighting
• Other outdoor displays

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

2. Absolute Maximum Ratings ( Ta = 25ºC )

Data

Item Symbol Value Unit

X10490

DC Forward Current IF 30 mA
Sheet

Forward Peak Pulse Current IFP [1] 100 mA

Reverse Voltage VR 5 V
Power Dissipation PD 125 mW
Operating Temperature Topr -30 ~ 85 ºC
Storage Temperature Tstg -40 ~ 100 ºC
Solder Temperature Ts 260ºC for 10seconds [2] ºC

Notes :
[1] t ≤ 0.1ms, D = 1/10
[2] No lower than 3mm from the base of the epoxy bulb.

3. Electro-Optical Characteristics ( Ta = 25ºC, IF=20mA )

Value
Item Symbol Unit
Min. Typ. Max.

Luminous Intensity [3] IV [4] 700 1300 2000 mcd

Dominant Wavelength[5] λd 519 525 536 nm
Forward Voltage [6] VF - 3.6 4.0 V
View Angle 2θ ½ 70 / 40 deg.
Reverse Current (at VR = 5V) IR - - 5 µA

Notes :
[3] SSC maintains a tolerance of ±10% on intensity and power measurements.
[4] IV is the luminous intensity output as measured with a cylinder.
[5] Dominant wavelength is derived from the CIE 1931 Chromaticity diagram.
A tolerance of ±0.5nm for dominant wavelength.
[6] A tolerance of ±0.05V on forward voltage measurements

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

4. Reliability Tests
Data
X10490

Item Condition Note Failures

Sheet

Life Test Ta = RT, IF = 30mA 1000hrs 0/22

High Temperature Operating Ta = 85ºC, IF = 8mA 1000hrs 0/22

Low Temperature Operating Ta = -30ºC, IF = 20mA 1000hrs 0/22

Ta = -40ºC (30min) ~ 100º (30min) 100

Thermal Shock 0/40
(Transfer time : 10sec, 1Cycle = 1hr) cycles

Resistance to soldering Heat Ts = 255 ± 5ºC, t = 10sec 1 time 0/22

ESD
1kV, 1.5kΩ ; 100pF 1 time 0/22
(Human Body Model)

High Temperature Storage Ta = 100ºC 1000hrs 0/22

Low Temperature Storage Ta = -40ºC 1000hrs 0/22

Temperature Humidity
Ta = 85ºC, RH = 85% 1000hrs 0/22
Storage
Temperature Humidity
Ta = 85ºC, RH = 85%, IF = 8mA 100hrs 0/22
Operating

< Judging Criteria For Reliability Tests >

VF USL[1] X 1.2
IR USL X 2.0
ФV LSL [2] X 0.5

Notes :
[1] USL : Upper Standard Level
[2] LSL : Lower Standard Level.

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

5. Characteristic Diagrams
Data
X10490

Ta= 25ºC Ta= 25ºC

Sheet

50 2.5

Relative Luminous Intensity

40 2.0
Forward Current(mA)

30 1.5

20 1.0

10 0.5

0 0.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 10 20 30 40 50

Forward Voltage [V] Forward Current [mA]

Forward Voltage vs. Forward Current Forward Current vs. Relative Intensity

Ta= 25ºC, IF= 20mA

40 1.0

X
Y
0.8
Forward Current IF [mA]

Relative Luminous Intensity

30

0.6

20

0.4

10
0.2

0 0.0
-40 -20 0 20 40 60 80 100 -90 -60 -30 0 30 60 90
o Off Axis Angle [deg.]
Ambient Temperature Ta[ C]

Ambient Temperature Directivity

vs. Maximum Forward Current
Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

6. Color & Binning

Data
X10490
Sheet

Bin Code
Luminous Dominant
Forward Voltage
Intensity Wavelength
S 1 2

Luminous Intensity (mcd) Dominant Wavelength (nm) Forward Voltage (V)

@ IF = 20mA @ IF = 20mA @ IF = 20mA
Bin Bin Bin
Min. Max. Min. Max. Min. Max.
Code Code Code
S 700 1300 1 519 527 1 3.0 3.5
T 1300 2000 2 527 536 2 3.5 4.0

Available ranks
Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

7. Outline Dimensions
Data
X10490

Unit : mm
Sheet

1.0
0.5 +0.2
-0.1

DETAIL 2.0 ± 0.2

y
ANODE 0.5 ± 0.05 1.0 MAX

4.63±0.10
x
2.5 ± 0.05

1.0 MIN
5.8±0.10
28.0 MIN 7.00±0.10

Notes : Protruded epoxy is 1.0mm maximum.

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

8. Packing
Data
X10490

Unit : mm
Sheet

* Antistatic poly bag

(500pcs max/bag)
50

* Inner box
95 (1bag max/box)
170
325

* Cardboard box
(35000pcs max/box)
0 (70boxes max/box)
27
480

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

9. Soldering Profile
Data

1) Wave Soldering Conditions / Profile

X10490

• Preliminary heating to be at 85ºC(120 ºC max) for 20 seconds(60 seconds max).

Sheet

• Soldering heat to be at 255 ºC (260ºC max) for 10 seconds

• Soak time above 200 ºC is 5 seconds

300

250 PEAK
10s
200 255 ºC (260 ºC max)
Temperature [ C]
O

150
PREHEAT

100 20s (60s Max)

85 ºC(120 ºC max)
50

0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36
T im e [s ]

2) Hand Soldering conditions

• Not more than 3 seconds at max. 350ºC, under Soldering iron.

3) Caution
• Lead frames are silver plated copper alloy. This substance has a low thermal coefficient
(easily conducts heat)
• The LEDs must not be repositioned after soldering.
• Do not apply any stress to the lead particularly when heat.

Note : In case the soldered products are reused in soldering process, we don’t guarantee the products.
Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

10. Precaution for Use

Data
X10490

1) Storage
• Before opening the package
Sheet

Avoid the absorption of moisture, we recommended to store Lamp LEDs in a dry

box(or desiccators) with a desiccant . Otherwise, store them in the following environment:
Temperature : 5℃~30℃ Humidity : 50% max.
• After opening the package
a. Soldering should be done right after opening the package(within 24Hrs).
b. Keeping of a fraction
- Sealing
- Temperature : 5 ~ 40℃, Humidity : less than 30%
c. If the package has been opened more than 1week or the color of desiccant changes,
Components should be dried for 10-12hr at 60±5℃
• Any mechanical force or any excess vibration shall not be accepted to apply during cooling
process to normal temp. after soldering.
• Avoid quick cooling
• Leadframes are silver plated SPCC. The silver plate surface may be affected by
environments which contains corrosive substances. Please avoid conditions which may cause
the LEDs to corrode, tarnish or discolor.

2) Lead Forming
• When the lead forming is required before soldering , care must be taken to avoid any bending
and mechanical stress. The stress to the base may damage the LEDs.
• When mounting the LEDs onto a PCB, the holes on the circuit board should be exactly
aligned with the leads of the LEDs.
• It is recommended that tooling made to precisely form and cut the leads to length rather than
rely on hand operating.

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)
Technical
Z-Power LED

3) Static Electricity
• Static Electricity and surge voltage damage the LEDs. So it is recommended that a wrist
Data

band or an anti-electrostatic glove be used when handling the LEDs.

X10490

• All devices, equipment and machinery must be properly grounded.

Sheet

It is recommended precautions be taken against surge voltage to the equipment that mounts
the LEDs.

4) Heat Generation
• Thermal is one of the important parameter to design the end product. Please consider the heat
generation of the LEDs.
• The operating current should be decided after considering the ambient maximum temperature
of LEDs.

5) Others
• The color of the LEDs is changed a little by an operating current and thermal.
• Anti radioactive ray design is not considered for the products listed here in.
• Gallium arsenide is used in some of the products listed in this publication. These products
are dangerous if they are burned or smashed in the process of disposal. It is also dangerous
to drink the liquid or inhale the gas generated by such products when chemically disposed.
• This device should not be used in any type of fluid such as water, oil, organic solvent and etc.
When washing is required, IPA(Isopropyl Alcohol) should be used.
• When the LEDs are illuminating, operating current should be decided after considering the
junction temperature.
Cf.) Please refer Ambient temperature vs. Forward Current graph on page 5
• The appearance and specifications of the product may be modified for improvement without
notice.

SEOUL SEMICONDUCTOR CO., LTD.

148-29, Kasan-Dong, Keumchun-Gu, Seoul, Korea
TEL : +82-2-3281-6269 FAX :+82-2-857-5430
www.seoulsemicon.com www.zled.com

Rev. 00
December 2007
www.ZLED.com
<080924> Rev. 0.2 Document No. : SSC-QP-7-07-24 (Rev.00)