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| MF430 Datacom, Telecom, General Purpose LED MF430 ST Applications * * * * * Ethernet 10 or 100Mbps Token Ring Fibre Channel 266Mbps Short Wavelength FDDI Short Wavelength ATMSDH/SONET 155Mbps * Intra-Office Telecom * General Purpose Description This high performance LED has been designed for Datacom, Telecom or General Purpose Applications. The short wavelength LED allows cost-effective links over short distances. This very high speed device has an actively aligned receptacle for optimized coupling of power to 62.5/125m fiber. A Silicon Photodiode is recommended as Receiver for this LED. ST Assembly Features * * * * * 865nm Surface-Emitting LED 250MHz Bandwidth Designed for 62.5/125m Fiber Aligned in ST(R) Receptacle MTTF >1,000,000 hours Ordering Information PART # RECEPTACLE MF430 ST ST -40C to +85C MF430 Functional Diagram FIBER ANODE CASE DETECTOR CATHODE BOTTOM VIEW MF430 LED ST(R) is a registered trademark of Lucent 13323.11 1997-04-01 6 Datacom, Telecom, General Purpose LED MF430 Absolute Maximum Ratings* Parameter Storage Temperature Operating Temperature (Fig 4) Electrical Power Dissipation (Fig 4) Continuous Forward Current (f10kHz) Peak Forward Current (duty cycle 50%, f1MHz) Reverse Voltage Soldering Temperature (Note 1) Symbol Tstg Top Ptot IF IFRM VR Tsld Min. -40 -40 Max. +85 +85 250 110 180 1.5 260 Units C C mW mA mA V C *Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Note 1: 2mm from the case for 10s. Optical & Electrical Characteristics (Case Temperature -25 to +70C) Parameter Fiber-Coupled-Power (Fig 1, 2, 3) Rise & Fall Time (10-90%, no bias) Bandwidth (3dBel) Peak Wavelength Spectral Width (FWHM) Forward Voltage (Fig 5) Reverse Current Capacitance Symbol Pfiber tr tf fc Min. -17.5 Typ. 1.5 250 Max. 2 880 60 2.1 20 Units dBm ns MHz nm nm V A pF Test Conditions IPeak=60mA (Note 1,2) IF=60mA (Note 2) IF=60mA (Note 2) IF=60mA IF=60mA IF=60mA VR=1V VR=0V, f=1MHz p VF IR C 850 865 50 20 Note 1: Average power at 10MHz/50% duty cycle. Measured at the exit of 100m of fiber. Note 2: 62.5/125m graded index fiber (NA = 0.275). Thermal Characteristics Parameter Thermal Resistance - Infinite Heat Sink Thermal Resistance - On PCB Temperature Coefficient - Optical Power Temperature Coefficient - Wavelength Symbol Rthjc Rthjb dP/dTj /dTj Min. Typ. Max. 200 300 Units C/W C/W %/C nm/C -0.6 0.3 7 MF430 Datacom, Telecom, General Purpose LED % 100 % 100 r z = opt. Oc = 62.5 m RELATIVE FIBER-COUPLED POWER RELATIVE FIBER-COUPLED POWER 80 80 z 60 60 40 40 r 20 r = opt. Oc = 62.5 m z 20 0 0.5 1.0 1.5 2.0 2.5 3.0 mm 0 0 20 40 60 80 z - AXIAL DISPLACEMENT OF FIBER r - RADIAL DISPLACEMENT OF FIBER Figure 1 Figure 2 % 100 mW 300 MAX. ELECTRICAL POWER DISSIPATION RELATIVE FIBER-COUPLED POWER 80 50% DUTY CYCLE INFINITE HEAT SINK 200 ON PC BOARD 60 DC 40 100 20 HEAT SINKED 0 0 40 80 120 160 200 mA 0 0 50 100 FORWARD CURRENT OPERATING TEMPERATURE Figure 3 Figure 4 mA 200 FORWARD CURRENT 100 0 0 1 2 3V FORWARD VOLTAGE Figure 5 8 Datacom, Telecom, General Purpose LED MF430 MF430 ST Mechanical Data 2-56 UNC - 2B max.0.5 3/8"-32 UNEF FIBER END SLOT SIDE 0.006 O2.502 +0.01 0 12.7 2.5 9.5 5.4 0.4 MARKING SIDE O2.5 +0 -0.004 7.89 RECOMMENDED FERRULE (not included) 7.6 min.12 3.9 5.4 20.1 Note: The LED chip is isolated from the case. All dimensions in mm. Typical Drive Circuit ST Packaging Hardware 3/8 - 32 UNEF 2B THREAD MF430 9.53 ECL VREF 12.70 1.65 I -5V HEX-NUT 10.41 14.27 0.46 WASHER 9 |
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