Description

Technical Parameters

Features

● Dual data-rate of 1.25Gbps/1.063Gbps operation

Two types：

A:1310nm FP Laser transmitter,1550nm PIN receiver

B:1550nm DFB Laser transmitter,1310nm PIN receiver

A:1310nm FP Laser transmitter,1490nm PIN receiver

B:1490nm DFB Laser transmitter,1310nm PIN receiver

● Compliant with SFP MSA and SFF-8472 with simplex LC or SC receptacle

● Digital Diagnostic Monitoring:

Internal Calibration or External Calibration

● Compatible with SONET OC-24-LR-1

● Compatible with RoHS

● +3.3V single power supply

● Operating case temperature range of

0°C to +70°C (Commercial) or -40°C to +85°C (Industrial)

Applications

● Gigabit Ethernet

● Fiber Channel

● Switch to Switch interface

● Switched backplane applications

● Router/Server interface

● Other optical transmission systems

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		Commercial	Tc	0		+70	°C
Operating Case Temperature		Industrial	Tc	-40		+85	°C
Power Supply Voltage			Vcc	3.13	3.3	3.47	V
Power Supply Current			Icc			300	mA
Data Rate	Gigabit Ethernet				1.25		Gbps
Data Rate	Fiber Channel				1.063		Gbps

Optical and Electrical Characteristics

Parameter		Symbol		Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength			λc	1290	1310	1330	nm	RSPD-03BD20-3155I
				1530	1550	1570		RSPD-03BD20-5531I
				1290	1310	1330		RSPD-03BD20-3149I
				1470	1490	1510		RSPD-03BD20-4931I
Spectral Width (RMS)			σ			4	nm
Spectral Width (-20dB)@DFB			∆λ			1	nm
Side Mode Suppression Ratio@DFB			SMSR	30			dB
Average Output Power			Pout	-9		-3	dBm	1
Extinction Ratio			ER	9			dB
Data Input Swing Differential			V_IN	400		1800	mV	2
Input Differential Impedance			Z_IN	90	100	110	Ω
TX Disable	Disable			2.0		Vcc	V
	Enable			0		0.8	V
TX Fault	Fault			2.0		Vcc	V
	Normal			0		0.8	V
Receiver
Centre Wavelength			λc	1530		1570	nm	RSPD-03BD20-5531I
				1290		1330		RSPD-03BD20-3155
				1470		1510		RSPD-03BD20-4931I
				1290		1330		RSPD-03BD20-3149I
Receiver Sensitivity						-23	dBm	3
Receiver Overload				-3			dBm	3
LOS De-Assert			LOS_D			-24	dBm
LOS Assert			LOS_A	-35			dBm
LOS Hysteresis				1		4	dB
Data Output Swing Differential			Vout	400		1800	mV	4
LOS			High	2.0		Vcc	V
			Low			0.8	V

Notes:

1. The optical power is launched into SMF.

2. PECL input, internally AC-coupled and terminated.

3. Measured with a PRBS 2⁷-1 test pattern @1250Mbps, BER ≤1×10^-12.

4. Internally AC-coupled.

FAQ

Q: What is the difference between SFP and BIDI SFP?

A: The difference between SFP and BIDI SFP lies in their transmission method. SFP (Small Form-factor Pluggable) is a general-purpose optical module that supports either single-fiber single-direction or dual-fiber bidirectional transmission depending on the specific type. On the other hand, BIDI SFP (Bidirectional SFP) is specifically designed for single-fiber bidirectional transmission, utilizing wavelength division multiplexing (WDM) technology to transmit signals in both directions over a single fiber, thereby saving fiber resources.

Q: What is the range of 1G SFP?

A: The range of 1G SFP (1 Gigabit Small Form-factor Pluggable) can vary depending on the type of fiber and the specific SFP module used. Generally, for multimode fiber, 1G SFP modules can achieve a transmission distance of up to 2 kilometers. For single-mode fiber, the transmission distance can be significantly longer, typically ranging from 10 kilometers to as much as 160 kilometers, depending on the specific module and its capabilities.

Q: What is the maximum distance for SFP?

A: The maximum distance for SFP (Small Form-factor Pluggable) can vary depending on the specific type and standard, but it typically ranges up to around 100 meters (328 feet) for standard Ethernet applications over multimode fiber. For single-mode fiber and certain advanced SFP modules, distances can extend up to 40 or even 80 kilometers (around 25 to 50 miles).

Q: What is the range of BIDI SFP ?

A: The range of BIDI SFP (Bidirectional SFP) can vary depending on the specific module and the type of fiber used. Typically, BIDI SFP modules are designed for long-distance transmission over single-mode fiber, with distances ranging from 40 kilometers to potentially even longer, depending on the module's capabilities.

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1.25Gb/s Single-Mode SFP BIDI 20KM Transceiver Module

Features

Applications

Absolute Maximum Ratings

Recommended Operating Conditions

Optical and Electrical Characteristics

FAQ