1.25Gb/s CSFP BIDI Transceiver 0 to +70℃

Product Features
● Two Bi-Directional transceivers in one SFP package
● Up to 1.25Gb/s data links
● Duplex LC connector
● Hot-pluggable SFP footprint
● 1310nm FP laser transmitter
● RoHS compliant and Lead Free
● Up to 20Km on 9/125um SMF
● Metal enclosure for lower EMI
● Single +3.3V power supply
● Compliant with CSFP MSA 2.0 (Option 2)
● Commercial and industrial operating temperature optional
● SFP MSA SFF-8074i Compliant
● Operating case temperature：Standard：0 to +70℃/Industrial：-40 to +85℃

Applications
● Gigabit Ethernet
● Fibre Channel

Regulatory Compliance
● ESD to the Electrical PINs: compatible with MIL-STD-883 Method 3015
● ESD to the Single LC Receptacle: compatible with IEC 61000-4-2
● Immunity compatible with IEC 61000-4-3
● EMI compatible with FCC Part 15 Class B EN55022 Class B (CISPR 22B) VCCI Class B
● Laser Eye Safety compatible with FDA 21CFR 1040.10 and 1040.11 EN60950, EN (IEC) 60825-1,2
● RoHS compliant with RoHS 2 (2011/65/EU)

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage	Vcc	-0.5	4.5	V
Storage Temperature	Ts	-40	+85	°C
Operating Humidity	–	5	85	%

Recommended Operating Conditions

Parameter		Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Standard	Tc	0		+70	°C
	Industrial		-40		+85	°C
Power Supply Voltage		Vcc	3.13	3.30	3.47	V
Power Supply Current		Icc			500	mA
Data Rate				1.25		Gbps
9/125um G.652 SMF		Lmax			20	km

Optical and Electrical Characteristics

Parameter	Symbol		Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength		λc	1260	1310	1360	nm
Spectral Width（RMS）		Δλ	–	–	3	nm
Side-Mode Suppression Ratio		SMSR	–	–	–	dB
Average Output Power		Pout	-9		-3	dBm	1
Extinction Ratio		ER	6.0	–	–	dB
Optical Rise / Fall Time		tr / tf	–	–	260	ps	2
Receiver
Centre Wavelength		λc	1470	1490	1510	nm
Receiver Sensitivity			–	–	-22.5	dBm	3, 4
Receiver Overload			-3	–	–	dBm
LOS De-Assert		LOSD			-25	dBm
LOS Assert		LOSA	-40			dBm
LOS Hysteresis		–	0.5	–	5	dB
LOS		High	2.0		Vcc	V
		Low			0.8	V

Notes:

1. Class 1 Laser Safety.

2. Unfiltered, 20-80%. Complies with Gigabit Ethernet eye masks when filtered.

3.Measured with conformance signals defined in FC-PI-2 Rev. 10.0 specifications.

4.Measured with PRBS 2⁷-1 at 10^-12 BER.

Mechanical Dimensions

Ordering information

Part Number	Product Description
CSFP-B3412-20D	1310T/1490R 1.25Gbps LC 20km 0°C~+70°C with DDM
CSFP-B3412-20DI	1310T/1490R 1.25Gbps LC 20km -40°C~+85°C with DDM

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Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.

The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. rther details are available from any F-tone Networks sales representative.