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參數(shù)資料
| 型號： | TLDR4900 |
| 廠商： | VISHAY SEMICONDUCTORS |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | LED Uni-Color Red 650nm 2-Pin T-1 |
| 中文描述： | Standard LED - Through Hole Red Clear Non-Diff |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 604K |
| 代理商： | TLDR4900 |
PI0512WS Page 3 of 8 – July 26, 2001
During normal operation, the impinging photons in or near the PN photodiode junction
generate free charges that are collected and stored on the junction's depletion capacitance.
Since on average a certain fraction of charge is generated and collected for each impinging
photon, the number of collected charges will proportionally increase with light exposures.
Figure 3 shows the stored signal charge as function of light exposure at a wavelength of
575 nm. The exposure is the product of the light intensity in nW/cm
2
and integration time in
seconds. The charge accumulates linearly until reaching the saturation charge where the
corresponding exposure is the saturation exposure.
0
10
20
30
40
50
60
70
0
50
100
150
200
Exposure (nJ/cm^2)
O
Saturation
Charge
Saturation
Exposure
Figure 3. Stored signal charge as function of exposure at a wavele of 575 nm.
The responsivity is defined as ratio of saturation charge divided by saturation exposure. The
measured typical responsivity of a photodiode is 3.3
×
10
-4
C/J/cm
2
at 575 nm. Figure 4 shows
the predicted responsivity of the photodiodes as a function of wavelength.
0.0E+00
5.0E-05
1.0E-04
1.5E-04
2.0E-04
2.5E-04
3.0E-04
3.5E-04
4.0E-04
4.5E-04
5.0E-04
100
300
500
700
900
Wavelength (nm)
R
QE=20%
QE=40%
QE=60%
QE=80%
Figure 4. Predicted spectral response.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLDR4900 | 制造商:Vishay Intertechnologies 功能描述:LED 3MM RED |
| TLDR4900-CS21Z | 制造商:Vishay Angstrohm 功能描述:LED Uni-Color Red 650nm 2-Pin T-1 |
| TLDR4901 | 功能描述:標(biāo)準(zhǔn)LED-通孔 Red Clear Non-Diff 63-200mcd@20mA RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強度:0.7 mcd 波長/色溫:615 nm 顯示角:45 deg 透鏡顏色/類型:Clear, Non-Diffused 正向電流:70 mA 正向電壓:1.83 V to 3.03 V LED 大小:2 mm 系列: 封裝:Tube |
| TLDR5400 | 功能描述:標(biāo)準(zhǔn)LED-通孔 Red Tinted Diffused RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強度:0.7 mcd 波長/色溫:615 nm 顯示角:45 deg 透鏡顏色/類型:Clear, Non-Diffused 正向電流:70 mA 正向電壓:1.83 V to 3.03 V LED 大小:2 mm 系列: 封裝:Tube |
| TLDR5400 | 制造商:Vishay Intertechnologies 功能描述:LED 5MM RED |
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