Document
TSTA7500
Vishay Telefunken
GaAlAs IR Emitting Diode in Hermetically Sealed TO18 Case
Description
TSTA7500 is a high efficiency infrared emitting diode in GaAlAs on GaAlAs technology in a hermetically sealed TO–18 package. Its flat glass window makes it ideal for use with external optics.
Features
D D D D D D
High radiant power Suitable for pulse operation Wide angle of half intensity ϕ = ± 30° Peak wavelength lp = 875 nm High reliability Good spectral matching to Si photodetectors
94 8400
Applications
Radiation source in near infrared range
Absolute Maximum Ratings
Tamb = 25_C Parameter Reverse Voltage Forward Current Peak Forward Current Surge Forward Current Power Dissipation Junction Temperature Storage Temperature Range Thermal Resistance Junction/Ambient Thermal Resistance Junction/Case Test Conditions Symbol VR IF IFM IFSM PV PV Tj Tstg RthJA RthJC Value 5 100 200 2.5 180 500 100 –55...+100 450 150 Unit V mA mA A mW mW °C °C K/W K/W
tp/T = 0.5, tp tp 100 ms
x
x 100 ms
Tcase
x 25 °C
Document Number 81046 Rev. 2, 20-May-99
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TSTA7500
Vishay Telefunken Basic Characteristics
Tamb = 25_C Parameter Forward Voltage Breakdown Voltage Junction Capacitance Radiant Intensity Radiant Power Temp. Coefficient of fe Angle of Half Intensity Peak Wavelength Spectral Bandwidth Rise Time Fall Time Test Conditions IF = 100 mA, tp 20 ms IR = 100 mA VR = 0 V, f = 1 MHz, E = 0 IF = 100 mA, tp 20 ms IF = 100 mA, tp 20 ms IF = 100 mA
x x x
Symbol VF V(BR) Cj Ie TKfe ϕ
Min 5 3.5
Typ 1.4 20 6 10 –0.7 ±30 875 80 300 300
Max 1.8
fe
IF = 100 mA IF = 100 mA IF = 1.5 A, tp/T = 0.01, tp 10 ms IF = 1.5 A, tp/T = 0.01, tp 10 ms
lp Dl
tr tf
x x
Unit V V pF mW/sr mW %/K deg nm nm ns ns
Typical Characteristics (Tamb = 25_C unless otherwise specified)
600 PV – Power Dissipation ( mW ) IF – Forward Current ( mA ) 500 400 300 200 RthJA 100 0 0
12790
125 RthJC 100 RthJC 75 50 RthJA 25 0 25 50 75 100 125
94 7971 e
0
20
40
60
80
100
Tamb – Ambient Temperature ( °C )
Tamb – Ambient Temperature ( °C )
Figure 1. Power Dissipation vs. Ambient Temperature
Figure 2. Forward Current vs. Ambient Temperature
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Document Number 81046 Rev. 2, 20-May-99
TSTA7500
Vishay Telefunken
101 I e – Radiant Intensity ( mW/sr ) I F – Forward Current ( A ) 1000
IFSM = 2.5 A ( Single Pulse ) tp / T = 0.01 100 0.05 0.1 0.2 0.5 10–1 10–2
100 tp = 10 ms tp / T = 0.001 10
1 10–1 100 101 tp – Pulse Duration ( ms ) 102
94 8188
100
94 8003 e
101 102 103 IF – Forward Current ( mA )
104
Figure 3. Pulse Forward Current vs. Pulse Duration
104 IF – Forward Current ( mA )
Figure 6. Radiant Intensity vs. Forward Current
1000
Fe – Radiant Power ( mW )
2 3 4
103
tp = 100 ms tp / T = 0.001
100
10
102
1
101 0
94 8005 e
0.1 1 100
94 7972 e
VF – Forward Voltage ( V )
101 102 103 IF – Forward Current ( mA )
104
Figure 4. Forward Current vs. Forward Voltage
1.2 V Frel – Relative Forward.