1.25G 20KM SC 1310/1550nm Single mode single fiber BIDI SFP

√ Multi-sourced SFP package with single SC/PC receptacle;

√ Single mode single fiber bi-directional transmission

√ Up to 10~120Km with 9/125μm SMF;

√ AC coupled for Rx and Tx side

√ Two temperature ranges: 0°C to +70°C for commercial level,

√ -40°C to +85°C for industrial level;

√ Operates at data rate 1.25Gbps

√ Complies with MIL-STD-883/GR-468

Send email to us DOWNLOAD SPEC

Product Detail

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TFAULTis an open collector/drain output, which should be pulled up with a 4.7k – 10k Ohms resistor on

the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high

output indicates a transmitter fault caused by either the TX bias current or the TX output power

exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the

output is pulled to <0.8V.

3. Laser output disabled on TDIS>2.0V or open, enabled on TDIS<0.8V.

4. Should be pulled up with 4.7k - 10 kohms on host board to a voltage between 2.0V and 3.6V.

MOD_DEF(0) pulls line low to indicate module is plugged in.

5. LOS is open collector output. Should be pulled up with 4.7k – 10 kohms on host board to a voltage

between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Ordering Information

7.1 Example

SFP 35 24 -F 1 1SC-20

Sign	Mean	Description
SFP	Module type	SFP=Single fiber SFP transceiver
35	Center wave	35=1310tx/1550rx		53=1550tx/1310rx	45=1490tx/1550rx	54=1550tx/1490rx
24	Transmitter Rate	03=155M	03=622M	24=1.25G	48=2.5G	60=3.125G
F	Laser type	F=FP		D=DFB	C=CWDM		V=VCSEL
1	Operating T	1=0~+70℃		2=-40~+85℃
2	DDMI	1=NO DDM		2=DDMI
SC	Connector	SC=SC		LC=LC
20	Distance	022=220M		055=550M	5=5KM		10=10KM
		20=20KM		40=40KM	80=80KM		100=100KM

Part No.	Wavelength	Connector	Temp.	TX Power (dBm)	RX Sens (Max.) (dBm)	Distance
SFP3524-F11SC-20	T 1310FP/R 1550	SC	-20 to 70	-9 to-3	-21	20km
SFP5324-D11SC-20	T 1550DFB/R 1310	SC	-20 to 70	-15 to-3	-21	20km
SFP5324-D11SC-40	T 1550DFB/R 1310	SC	-20 to 70	-9 to-3	-24	40km
SFP3524-D11SC-40	T 1310DFB/R 1550	SC	-20 to 70	-5to-0	-24	40km
SFP5424-D11SC-80	T 1550DFB/R 1310	SC	-20 to 70	-3 to2	-26	80km
SFP4524-D11SC-80	T 1490DFB/R 1550	SC	-20 to 70	-3 to2	-26	80km

Figure 2 Example SFP Host Board Schematic

Figure 3 Recommended Host Board Supply Filtering Network

Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA)

Figure 4 SFP Host Board Mechanical Layout

Figure 5 SFP Host Board Mechanical Layout (Cont.)

Figure 6 Recommended Bezel Design

Absolute Maximum Ratings

Recommended Operating Conditions

Operating Conditions

1 Transmitter（T=25℃, Vcc=3~3.6V (+3.3V)）

Parameter			Symbol				Min.	Typ	Max.	Unit
Center Wavelength			SC				1520	1550	1580	nm
							1280	1310	1340
							1470	1490	1510
Spectral width			△l	FP@RMS			-	2	4	nm
				DFB@-20dB FWHM			-	-	1
Output Power	0~20km	1.25G	1310 FP			Po	-9	-	-3	dBm
			14/15 DFB				-15		-3
	40km	1.25G	14/15 DFB				-9	-	-3
			1310 DFB				-5		-0
	60km	1.25G	14/15 DFB				-5		0
	80km	1.25G	14/15 DFB				-3		2
	100~120km	1.25G	14/150 DFB				0		3
Extinction Ratio			ER				9		-	dB
Supply Current			ICCT				-		150	mA
Input Differential Impedance			Rin					100		Ω
Data Input Swing Differential			Vin				300		1200	mV
Optical Modulation Amplitude			OMA				174			μW
Transmit Disable Voltage			VD				2.0		Vcc	V
Transmit Enable Voltage			VEN				0		0.8	V
Transmit Disable Assert Time									10	us
Optical Rise/Fall Time			1.25G		Tr/ Tf (20-80%)			150	260	ps
Deterministic Jitter Contribution			TX ΔDJ					20	56.5	ps
Total Jitter Contribution			TX ΔTJ					50	119	ps

2 Receiver （T=25℃, Vcc=3~3.6V (+3.3V)

Parameter			Symbol		Min.	Typ	Max.	Unit
Wavelength Range			SC		1520	1550	1580	nm
					1280	1310	1340
					1470	1490	1510
Sensitivity	20km	1.25G	Pin	PMIN	-	-	-21	dBm
	40/60km	1.25G	Pin		-	-	-24
	80km	1.25G	Pin		-	-	-26
	100km	1.25G	APD				-30
	120km	1.25G	APD				-32
MAX. Input Power (Saturation)			PMAX		-3	-	-
Signal Detect Assert			PA		-	-	-24
Signal Detect De-assert			PD		-45	-	-
Signal Detect Hysteresis			PHYS		1	-	4
Supply Current			ICCR		-	-	150	mA
Data Output Swing Differential			Vout		400	-	1000	mV
Signal Detect Voltage – High			VSDHC		2.0	-	VCC	V
Signal Detect Voltage – Low			VSDL		0	-	0.8	V