0.4inch 4 Digit Clock LED Display Seven Segment Common Cathode
0.4inch 4 Digit Clock LED Display Seven Segment Common Cathode
(1)Package Dimension and internal circuit
(2)Specification details
General Characteristics
Lower working voltage and current
Lighting answering Time <0.1μs, better high frequency, chromaticity uniformity, high brightness.
Smaller volume, lighter weight, better impact resistance, solid sealing, good steady.
Long life for 100,000 hours.
Keep scaning and drivering every segment continuously.
Better showeffect and wider visual angle.
Recommend constant current driver.
Protective coating, and rip off when using.
Solder temperature: 260℃,and stay time less than 5 seconds.
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Electrical/Optical Characteristics at Ta=25℃ |
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Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
Condition |
|
Luminous lntensity |
Iv |
20 |
-- |
25 |
mcd |
If=20 mA |
|
Peak Wavelength |
λP |
- |
- |
- |
nm |
If=20 mA |
|
Dominant Wavelength |
λd |
600 |
-- |
605 |
nm |
If=20 mA |
|
Spectral Line Half-Width |
△λ |
20 |
20 |
20 |
nm |
If=20 mA |
|
Forward Voltage |
VF |
1.8 |
-- |
2.4 |
V |
If=20 mA |
|
Reverse Current |
IR |
- |
- |
20 |
μV |
VR=6 V |
|
Luminous intensity matching ratio |
Iv-m |
|
|
1:1.2 |
|
If=20mA |
|
Absolute Maximum Ratings at Ta= 25℃ |
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|
Parameter |
symbol |
Maximum rating |
unit |
|
Power Dissipation |
Pd |
50 |
mW |
|
Forward Current |
IF |
20 |
mA |
|
Peak Forward Current |
IF(Peak) |
80 |
mA |
|
Reverse Voltage |
VR |
6 |
V |
|
Operating Temperature |
Topr |
-40℃ +80℃ |
|
|
Storage Temperature |
Tstg |
-40℃ +80℃,RH:25%~65%, within 3 months |
|
|
Lead Solder Temperature |
Tsol |
260℃ for 5 seconds |
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(3)FAQ
About the quality of the goods
Engineers of our company have more than 20 years experience in field , advanced equipment and assembly line, go through three main process before goods leave the factory, every procedure, strict inspection, ensure that every factory goods is qualified.
About the packing and shipping
The goods need to go through four layers of packaging, first soft plastic bubble wrap, then wrapped with tape again after place a layer with bubble wrap into cartons
Time of delivery
The delivery time is normally within 15 days after order placement
Price
Kerun has big production purchasing plans ,this allow us to gain a comparatively lower purchasing costs than others from suppliers meanwhile,the raw material suppliers and other spare parts factories are offering us competitive price than other suppliers this allows us to pass the competitive price on our customers.
Warranty
Kerun adopt 1-2Years Warranty ,to our customers from the purchased day on ,when there is a problem ,we will deal with it and offer the solution immediately according to the LED display usage situation ,the quality resulted problem product will be replaced ,the customers PI purchasing record is well .recorded and it will not destroy or lost with any salers change ,then there is always the solution in 1-2years Guarantee Period
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
