4mW-peak ( at "1 " in digital signal), 1mW-average. SMF-28 fiber without connector (only a few of them come with MU connectors), 900um-buffered fiber. 14-pin butterfly package. Mostly made in 2006. EC48 provides substantially lower dispersion penalty and lower chirp than a directly modulated DFB. The wavelength stability is assured by design, eliminating the need for wavelength lockers and complex feedback control circuits. Features • ITU wavelengths across C-band • 100 GHz channel spacing • SONET/SDH OC-48/STM16 ring and meshed applications • Low dispersion provides up to 200-km, 400-km, and 650-km reach in SMF-28 fiber • Low transient chirp provides unique narrow dynamic spectrum • Excellent long-term wavelength stability eliminates the need for a wavelength locker Current actual available qty for certain wavelength will be displayed below after you select (Choose P/N and peak wavelength) menu under Options section below (price is higher near 1550nm). Available wavelengths and qty on April 3, 2012: Wavelength (nm), Part Number, Qty, price 1535.04, EC48-100-530-04-XX-400-C0041, 2, $240 1536.61, EC48-100-510-04-XX-400-C0041, 3, $240 1538.19, EC48-100-490-04-XX-400-C0041, 6, $240 1539.77, EC48-100-470-04-XX-400-C0041, 4, $240 1542.94, EC48-100-430-04-XX-400-C0041, 2, $245 1544.53, EC48-100-410-04-XX-400-C0041, 4, $250 1546.12, EC48-100-390-04-XX-400-C0041, 6, $265 1550.92, EC48-100-330-04-XX-400-C0041, 5, $300 1552.52, EC48-100-310-04-XX-400-C0041, 4, $285 1554.13, EC48-100-290-04-XX-400-C0041, 6, $270 1555.75, EC48-100-270-04-XX-400-C0041, 1, $260 1557.36, EC48-100-250-04-XX-400-C0041, 5, $250 1558.98, EC48-100-230-04-XX-400-C0041, 7, $240 1560.61, EC48-100-210-04-XX-400-C0041, 2, $240