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10G 1550nm 80km SFP+ Optical Transceiver SPT-SFP+-ZR

1550nm 1G fiber optic transceiver

80KM 1550nm SFP+ Optical Transceiver


  • Compliant with SFF-8431,SFF-8432 and IEE802.3ae
  • 10GBASE-ZR, and 1G/2G/4G/ 8G/10G Fiber Channel applications.
  • Cooled EML transmitter and APD receiver
  • link length up to 80km (with amplifier)
  • Low Power Dissipation 1.4W Typical (Maximum:2W)
  • -5ºC to 70ºC Operating Case Temperature
  • Single 3.3V power supply
  • Diagnostic Performance Monitoring of module temperature, supply Voltages, laser bias current, transmit optical power, receive optical power
  • RoHS6 compliant and lead free


  • 10G Ethernet
  • 10G Fiber Channel (with/without FEC)

SOPTO SFP+ZR 1550nm Transceiver is a “Limiting module”, designed for 10G Ethernet, and 2G/4G/ 8G/10G Fiber- Channel applications.
The transceiver consists of two sections: The transmitter section incorporates a colded EML laser. And the receiver section consists of a APD photodiode integrated with a TIA. All modules satisfy class I laser safety requirements. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage.


Figure1. Module Block Diagram

Absolute Maximum Ratings






Supply Voltage Vcc -0.5 3.8 V
Storage Temperature Tst -40 85 ºC
Relative Humidity Rh 0 85 %

Operating Conditions

Parameter Symbol Min Typical Max Unit
Supply Voltage Vcc 3.13 3.3 3.47 V
Supply current Icc - 420 610 mA
Operating Case temperature Tca -5 - 70 ºC
Module Power Dissipation Pm - 1.4 2 W

1.   Supply current is shared between VCCTX and VCCRX.

Transmitter Specifications – Optical

Parameter Symbol Min Typical Max Unit
Center Wavelength λc 1530   1565 nm
Spectral Width(-20dB) Δλ20 - - 0.3 nm
Average Optical Power[2] Po 0 - +3 dBm
Side Mode Suppression Ratio SMSR 30 - - dB
Optical Transmit Power (disabled) PTX_DISABLE - - -30 dBm
Extinction Ratio ER 9 - - dB
Relative Intensity Noise RIN - - -128 dB/Hz
Optical Return Loss Tolerance Orl - - 21 dB


  1.  Wavelength stability is achieved within 60 seconds (max) of power up.
  2.  Minimum OMA = -2.4 dBm.

Receiver Specifications – Optical

Parameter Symbol Min Typical Max Unit
Input Operating Wavelength λ 1260 - 1620 nm
Receiver sensitivity(Average) [1] Rsen - - -24 dBm
Maximum Input Power RX-overload - - -7 dBm
Loss of Signal Asserted Lsa -34 - - dBm
LOS De-Asserted Lda - - 24 dBm
LOS Hysteresis Lh 0.5 - - dB

[1] Measured with conformance test signal for BER = 10-12. The stressed sensitivity values in the table are for system level BER measurements which include the effects of CDR circuits. It is recommended that at least 0.4 dB additional margin be allocated if component level measurements are made without the effects of CDR circuits.

Transmitter Specifications – Electrical

Parameter Symbol Min Typical Max Unit
Data Rate Mra - 10.3 11.3 Gbps
Input differential impedance Rim - 100 - Ω
Differential data Input VtxDIFF 120 - 850 mV
Transmit Disable Voltage VD 2.0 - Vcc3+0.3 V
Transmit Enable Voltage Ven 0 - +0.8 V
Transmit Disable Assert Time Vn - - 100 us

Receiver Specifications – Electrical

Parameter Symbol Min Typical Max Unit
Data Rate Mra - 10.3 11.3 Gbps
Differential Output Swing Vout P-P 350 - 850 mV
Rise/Fall Time Tr / Tf 24 - - ps
Loss of Signal -Asserted VOH 2 - Vcc3+0.3- V
Loss of Signal -Negated VOL 0 - +0.4 V

Digital Diagnostic Functions

Parameter Symbol Min Max Unit Notes
Transceiver Temperature DMI_Temp -3 +3 degC Over operating temp
TX Output optical power DMI_TX -3 +3 dB  
RX Input optical power DMI_RX -3 +3 dB -3dBm    to
-12dBm range
Transceiver Supply voltage DMI_VCC -0.08 +0.08 V Full  operating range
Bias current monitor DMI_Ibias -10% 10% mA  
Dynamic Range Accuracy
Transceiver Temperature DMI_Temp -5 70 degC  
TX Output optical power DMI_TX -1 +2 dBm  
RX Input optical power DMI_RX -26 -7 dBm  
Transceiver Supply voltage DMI_VCC 3.0 3.6 V  
Bias current monitor DMI_Ibias 0 100 mA  

Figure2.Electrical Pin-out Details

Pin Descriptions

Pin Symbol Name/Description
1  VEET [1] Transmitter Ground
2 Tx_FAULT [2] Transmitter Fault
3 Tx_DIS    [3] Transmitter Disable. Laser output disabled on high or open
4 SDA [2] 2-wire Serial Interface Data Line
5 SCL [2] 2-wire Serial Interface Clock Line
6 MOD_ABS [4] Module Absent. Grounded within the module
7 RS0 [5] Rate Select 0
8 RX_LOS [2] Loss of Signal indication. Logic 0 indicates normal operation
9 RS1 [5] Rate Select 1
10 VEER [1] Receiver Ground
11 VEER [1] Receiver Ground
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver DATA out. AC Coupled
14 VEER [1] Receiver Ground
15 VCCR Receiver Power Supply
16 VCCT Transmitter Power Supply
17 VEET [1] Transmitter Ground
18 TD+ Transmitter DATA in. AC Coupled
19 TD- Transmitter Inverted DATA in. AC Coupled
20 VEET [1] Transmitter Ground

[1] Module circuit ground is isolated from module chassis ground within the module.
[2].should be pulled up with 4.7k - 10k ohms on host board to a voltage between 3.15Vand 3.6V. [3]Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
[4]Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to Vcc_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module is physically absent from a host slot. [5] RS0 and RS1 are module inputs and are pulled low to VeeT with > 30 kΩ resistors in the module.


Figure3. Host Board Power Supply Filters Circuit

Figure4. Host-Module Interface


Figure5. Mechanical Specifications

Regulatory Compliance

Ordering information

Part Number Product Description
SPT-SFP+-ZR 10Gbps, 1550nm SFP+ 80km, -5ºC ~ +70ºC


  1. “Specifications for Enhanced Small Form Factor Pluggable Module SFP+”, SFF-8431, Rev 4.1, July 6,2009.
  2. “Improved Pluggable Formfactor”,SFF-8432, Rev 4.2,Apr 18,2007
  3. IEEE802.3ae - 2002
  4. “Diagnostic Monitoring Interface for Optical Transceivers” SFF-8472, Rev 10.3, Dec 1,2007

Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by SOPTO before they become applicable to any particular order or contract. In accordance with the SOPTO 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 SOPTO or others. Further details are available from any SOPTO sales representative.


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