PRELIMINARY DATA SHEET NEC's InGaAsP MQW-DFB LASER MODULE IN COAXIAL PACKAGE FOR 2.5 Gb/s, CWDM APPLICATIONS NX8508 Series FEATURES • INTERNAL OPTICAL ISOLATOR • PEAK EMISSION WAVELENGTH λp = 1 470 to 1 610 nm (Based on CWDM) • OPTICAL OUTPUT POWER Pf = 2.0 mW • OPERATING CASE TEMPERATURE RANGE TC = -20 to +85°C • SIDE MODE SUPPRESSION RATIO SMSR = 40 dB • InGaAs MONITOR PIN-PD • WITH SC-UPC CONNECTOR DESCRIPTION • BASED ON TELCORDIA RELIABILITY NEC'S NX8508 Series are 1 470 to 1 610 nm Multiple Quantum Well (MQW) structured Distributed Feed-Back (DFB) laser diode coaxial modules with an internal optical isolator. These devices are ideal for 2.5 Gb/s CWDM application. ELECTRO-OPTICAL CHARACTERISTICS (TC = -20 to +85°C, unless otherwise speciﬁed) PART NUMBER SYMBOLS PARAMETER AND CONDITIONS Pf Optical Output Power from Fiber, CW, TC = 25°C, IF = Ith + 20 mA Vop Operating Voltage, CW, Pf = 2.0 mW Ith Threshold Current, TC = 25°C NX8508 SERIES UNIT MIN. TYP. MAX. mW 2.0 V 1.1 1.6 mA 10 20 50 Pth Threshold Output Power, IF = Ith μW ηd Differential Efﬁciency W/A Pf = 2.0 mW, TC = 25°C Pf = 2.0 mW Δηd λp 100 0.07 0.1 0.04 Temperature Dependence of Differential Efﬁciency ηd (@ TC°C) Δηd = 10 log ηd (@ 25°C) dB −3.0 −1.6 Peak Emission Wavelength, CW, Pf = 2.0 mW, TC = 25°C nm λp−2 λp *1 λp+2 0.12 Δλ/ΔT Temperature Dependence of Peak Emission Wavelength, CW nm/°C 0.08 0.10 SMSR Side Mode Suppression Ratio, Pf = 2.0 mW dB 30 40 Rise Time, 20-80%, Pf = 2.0 mW ps tr 100 Continued on next page California Eastern Laboratories NX8508 Series ELECTRO-OPTICAL CHARACTERISTICS (TC = -25 to +85°C, unless otherwise speciﬁed) PART NUMBER SYMBOLS NX8508 SERIES PARAMETER AND CONDITIONS UNIT tf Fall Time, 80-20%, Pf = 2.0 mW ps Im Monitor Current, VR = 1.5 V, Pf = 1.0 mW μA ID Monitor Dark Current nA VR = 1.5 V, TC = 25°C MIN. Tracking Error *2, Im = const. dB *1 Available Available for CWDM Wavelengths based on ITU-T recommendations λp = 1 470, 1 490, 1 510, 1 530, 1 550, 1 570, 1 590, 1 610 nm Please refer to Table A. Table A: CWDM wavelength code (@ TC = 25°C) WAVELENGTH MIN. (nm) TYP. (nm) MAX. (nm) 47 1 468 1 470 1 472 49 1 488 1 490 1 492 51 1 508 1 510 1 512 53 1 528 1 530 1 532 55 1 548 1 550 1 552 57 1 568 1 570 1 572 59 1 588 1 590 1 592 61 1 608 1 610 1 612 CODE *2 Tracking Error: γ Pf γ = 10 log (mW) TC = 25ºC 2.0 TC = -20 to +85ºC Pf 0 Im (mA) Im Pf 2.0 [dB] MAX. 150 100 VR = 1.5 V γ TYP. −1.0 500 1 000 0.1 10 10 100 1.0 NX8508 Series ABSOLUTE MAXIMUM RATINGS1 SYMBOL PARAMETER UNIT RATINGS Pf Optical Output Power from Fiber mW 5 IF Forward Current of LD mA 150 VR Reverse Voltage of LD V 2.0 IF Forward Current of PD mA 2.0 VR Reverse Voltage of PD V 15 TC Operating Case Temperature °C -20 to +85 Tstg Storage Temperature °C −40 to +85 PACKAGE DIMENSIONS (Units in mm) 6.0 15.0 27.6±1.0 φ 7.0±0.2 0.5 7.3 0.5±0.2 8.0±0.3 20.0±1.0 6.0 20.4±1.0 2.2 φ 0.45±0.05 1.2±0.2 8.0±0.3 3.2 φ 7.0±0.2 φ 2.2 φ 0.9 Optical Fiber (SMF) With SC Connector 28.3±1.0 φ 0.9 Optical Fiber (SMF) With SC Connector 4.0±0.2 NX8508CGxx*1 -CC 19.5±1.0 NX8508BMxx*1 -CC φ 0.45±0.05 12.7±0.2 16.0 17.0±0.2 PIN CONNECTIONS 7.2±0.3 1 3 2 3.7±0.3 1.0±0.1 4 4 1 Case PD LD *1 Please refer to ORDERING INFORMATION. 3 2 P.C.D. = φ2.0 4–R1.25±0.2 2 3 2– φ 2.5 4 1 8.5±0.2 12.0±0.15 7.0±0.2 PIN CONNECTIONS P.C.D. = φ2.0 PD 3 4 2 1 LD Case NX8508 Series OPTICAL FIBER CHARACTERISTICS SPECIFICATION UNIT Mode Field Diameter PARAMETER 9.5±1 μm Cladding Diameter 125±2 μm Maximum Cladding Noncircularity 2 % 1.6 % 0.9±0.1 mm Maximum Core/Cladding Concentricity Outer Diameter Cut-off Wavelength 1 100 to 1 270 nm 30 mm 1 000±100 mm Minimum Fiber Bending Radius Fiber Length Flammability UL1581 VW-1 SC-UPC Connector 8.99±0.5 mm 35±2 mm Fiber Length: 1 000±100 mm ORDERING INFORMATION PART NUMBER FLANGE TYPE NX8508BMxx-CC-AZ* NX8508CGxx-CC-AZ* Flat Mount Flange Vertical Mount Flange AVAILABLE CONNECTOR With SC-UPC Connector *NOTE: Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation. NX8508 xx-CC Connector code : With SC-UPC connector Wavelength code : Refer to Table A Package code : Refer to PACKAGE DIMENSIONS Life Support Applications These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify CEL for all damages resulting from such improper use or sale. 05/03/2004 A Business Partner of NEC Compound Semiconductor Devices, Ltd. 4590 Patrick Henry Drive Santa Clara, CA 95054-1817 Telephone: (408) 919-2500 Facsimile: (408) 988-0279 Subject: Compliance with EU Directives CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive 2003/11/EC Restriction on Penta and Octa BDE. CEL Pb-free products have the same base part number with a suffix added. The suffix –A indicates that the device is Pb-free. The –AZ suffix is used to designate devices containing Pb which are exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals. All devices with these suffixes meet the requirements of the RoHS directive. This status is based on CEL’s understanding of the EU Directives and knowledge of the materials that go into its products as of the date of disclosure of this information. Restricted Substance per RoHS Concentration Limit per RoHS (values are not yet fixed) Concentration contained in CEL devices -A Not Detected Lead (Pb) < 1000 PPM Mercury < 1000 PPM Not Detected Cadmium < 100 PPM Not Detected Hexavalent Chromium < 1000 PPM Not Detected PBB < 1000 PPM Not Detected PBDE < 1000 PPM Not Detected -AZ (*) If you should have any additional questions regarding our devices and compliance to environmental standards, please do not hesitate to contact your local representative. 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