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L7551-21 Datasheet(PDF) 1 Page - Hamamatsu Corporation |
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L7551-21 Datasheet(HTML) 1 Page - Hamamatsu Corporation |
1 / 2 page L8231 and L7551 series are high-speed infrared emitters specifically developed for 1.3 µm band optical fiber communications. These devices incorporate a high-speed Fabry-Perot laser diode integrated in a receptacle module. Packages are available with various connectors and mounting styles. Features l High-speed Fabry-Perot laser diode L8231 series: 1.25 Gbps L7551 series: 2.5 Gbps l Compatible with single/multi mode optical fibers Applications l Optical fiber communications l Fiber channel l Gigabit ethernet l HDTV l SDH LASER DIODE Laser diode Receptacle type, 1.3 µm, 1.25, 2.5 Gbps L8231/L7551 series s Absolute maximum ratings (Ta=25 °C) Parameter Symbol L8231 series L7551 series Unit Ith + 14 (DC) Ith + 16 (DC) mA Forward current IF Ith + 28 (pulse) * 1 Ith + 32 (pulse) * 1 mA Reverse voltage (laserdiode) VR 2 V Reverse voltage (photodiode) VRm20 V Operating temperature Topr -20 to +70 °C Storage temperature Tstg -40 to +70 °C *1: Duty ratio 50 % s Electrical and optical characteristics (Typ. Ta=25 °C, IF=Ith +10 mA) Parameter Symbol L8231 series L7551 series Unit Peak wavelength λp 1.31 1.31 µm Forward voltage VF 1.1 1.1 V Threshold current Ith 6 9 mA Fiber end output * 2 PF 0.2 0.2 mW Rise time tr 250 200 ps Data rate B 1.25 2.5 Gbps Monitor current (photodiode) Im 0.4 0.5 mA *2: M e a s ur e d using a single- mo d e o ptic al fiber ( m o d e field di am et er 9. 5 µm) w i t h a m a ster plu g. s Package lineup L8231/L7551 Parameter -21 -22 -23 -32 -44 Mounting style Board Panel Board & panel Connector SC FC MU FC LC Dimensional outline ➀➁➂➃➄ 1 |
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