Features

• Four high-reliability, high performance DFB lasers
• High performance internal driver
• -5 to +75 °C case operating temperature range
• 25.78125Gb/s data rate for each channel capable of 27.952Gb/s operation
• Mechanical design suitable for QSFP28 applications
• LC receptacle, with integrated optical isolator
• Flex circuit electrical interface

Applications

• 100G-LR4 (10km) QSFP28

Absolute Maximum Ratings

(Tcase=+25°C , unless otherwise noted)

Parameter	Symbol	Unit	Min	Max
Storage temperature	Tstg	°C	-40	+85
Operating case temperature	Tc	°C	-5	+75
Supply voltage of Laser driver IC	Vcc1	V	-0.3	Vcc3+1
Supply voltage of Laser driver IC	Vcc2	V	-0.3	+5
Supply voltage of Laser driver IC	Vcc3	V	-0.3	+4
Voltage at any driver IC Input or Output except ISNK, VOUTP/VOUTN		V	-0.3	Vcc+0.3
Voltage at ISNK, VOUTP and VOUTN		V	-0.3	Vcc2+1
Differential Input Voltage	VINP – VINN	V	-1.5	+1.5
TEC current	Itec	A	-0.6	+0.8
TEC voltage	Vtec	V	-3.3	+3.3
Flex Soldering Temperature (60s max)		°C	-	250
Laser reverse Voltage	Vrl	V	-	2
Laser forward Current	IOP	mA	-	100

Electrical and optical characteristics

(Unless otherwise noted, TOP=+50°C, Tc=+25°C, BOL)

Parameter	Symbol	Unit	Min	Type	Max
Bias current	Iop	mA	-	-	80
Forward voltage	Vf	V	-	-	2.6
Peak wavelength	λ0	nm	1294.53	1295.56	1296.59
	λ1	nm	1299.02	1300.05	1301.09
	λ2	nm	1303.54	1304.58	1305.63
	λ3	nm	1308.09	1309.14	1310.19
Side mode suppression ratio	SMSR	dB	30	-	-
Spectral width	Δλ	nm	-	-	1
Output average power, each lane (EOL)	Pave	dBm	-4.3	-	4.5
Optical modulation amplitude	OMA	dBm	-1	-	4.5
Extinction ratio	ER	dB	4	-	-
RIN20oma	RIN20	dB/Hz	-	-	-130
Thermistor Resistance	Rth	kΩ	9.5	-	10.5
Thermistor B constant	B	K	3800	3900	4000
TEC current (BOL)	Itec	A	-	0.5	-
TEC voltage (BOL)	Vtec	V	-	1.5	-

We also provide 40G TOSA/ROSA upon request, please contact our sales team for more information.