SFP Series
GB1310-SFP-SC.S20
GB1550-SFP-SC.S20
Single-Mode 100Mbps to 1.25Gbps FE/GBE /FC SC
Single-Fiber SFP Transceiver
RoHS CompliantFeaturesSupport 1.25Gbps Data Links

A type: 1310nm FP TX /1550nm RX B
type: 1550nm DFB TX /1310nm RX20km with 9/125 µm SMF

Applications

Single 3. 3V Power supply and TTL Logic Interface

Fiber Channel Links



Hot-Pluggable SFP Footprint Simplex SC/LCWDM Gigabit Ethernet Links

Connector Interface

Other Optical Links

Class 1 FDA and IEC60825-1 Laser SafetyCompliant



FTTX Application

Operating Case TemperatureStandard: 0℃~+70℃ Industrial:40℃~+85℃
Compliant with SFP MSA SpecificationCompliant with Digital Diagnostic Monitor Interface
SFF-8472
Safety Certification: TUV/UL/FDA*Note1



RoHS CompliantOrdering Information
Part No.

Data Rate

WavelengthInterface

Temp.

DDMI

GB1310-SFP-SC.S20

1.063/1.25Gbps

1310nmSCStandard

YES

GB1550-SFP-SC.S20

1.063/1.25Gbps

1550nmSC

Standard

YES

GB1310-SFP-SC.S20(WT)

1.063/1.25Gbps

1310nmSC

Industrial

YES

GB1550-SFP-SC.S20(WT)

1.063/1.25Gbps

1550nmSCIndustrial

YES

Note1: For the latest certification information, please check with Data Controls Inc..
Note2: Standard version*The product image only for reference purpose.

Data Controls Inc..
Page 1 of 11V4.h

SFP Series
Product Description
The GB1310/1550-SFP-SC.S20series is small form factor pluggable module for Gigabit Ethernet
1000BASE-BX and Fiber Channel single fiber applications by using 1310nm / 1550nm transmitterand 1550nm / 1310nm receiver. It is with the SFP 20-pin connector to allow hot plug capability.
The transmitter section uses a class 1 laser compliant according to International Safety Standard
IEC 60825. The receiver section uses an integrated B type / A type detector preamplifier (IDP)
mounted in an optical header and a limiting post-amplifier IC.
The GB1310/1550-SFP-SC.S20 series are designed to be compliant with SFF-8472 Multi-source
Agreement (MSA).

Absolute Maximum Ratings
Parameter

Symbol

Min.

Max.

Unit

Storage Temperature

Ts-40

+85°C

Supply Voltage

Vcc

-0.5

3.6V

-95%

Operating Relative Humidity*Exceeding any one of these values may destroy the device immediately.

Recommended Operating Conditions
Parameter

SymbolPower Supply Voltage

GB1xx0-SFPSC.S20GB1xx0-SFPSC.S20(WT)
Vcc

Power Supply Current

Icc

Operating Case
Temperature

Date Rate

TCMin.
0

Typical+70

Unit°C

+85

-40
3.15

Max.

3.3

3.45

V300mA

FC

1.063

Gbps

GBE

1.25Gbps

Data Controls Inc..
Page 2 of 11

V4.hSFP Series
Performance Specifications - ElectricalParameter

Symbol

Min.

Typ.

Max

Unit

Notes

2000

mVpp

AC coupled
inputs*(Note4)

115

ohm

Rin > 100kohm @ DC

Transmitter
LVPECL
Inputs(Differential)

Vin

400

Input Impedance(Differential)

Zin

85

TX_DisTX_FAULT

100

Disable2Vcc+0.3

Enable00.8Fault

2Vcc+0.3

Normal00.5

VV

Receiver
LVPECL Outputs(Differential)

Vout

400

Output Impedance(Differential)

Zout

85

RX_LOS

100

2000

mVpp

115

ohm

LOS

2Vcc+0.3

V

Normal00.8

V

MOD_DEF ( 0:2 )

VoH

2.5

VoL

0V
0.5

V

AC coupled
outputs*(Note4)

With Serial ID

Optical and Electrical Characteristics(GB1310-SFP-SC.S20, 1310nm FP and PIN, 20km)
Parameter

Symbol9µm Core Diameter SMF

LMin.

Data Rate

TypicalMax.

Unit

20km

1063/1250

Mbps

Transmitter
Center WavelengthλC

Spectral Width (RMS)∆λAverage Output Power*(Note2)

Pout-8Extinction Ratio @ 1250Mbps

ER6

Rise/Fall Time(20%～80%)

tr/tf

0.26

nsTotal Jitter

TJ260

ps

Output Optical Eye*(Note3)

1270

1310

1350

nm

3.5

nm

-3dBm

9dB

Compliant with IEEE 802.3ah-2004*(note6)

TX_Disable Assert Time

t_off

10

us

Pout@TX Disable Asserted

Pout-45dBm

1580

nm

-22dBmReceiverCenter WavelengthλC

ReceiverSensitivity*(Note5)@1250Mbps

Pmin

Receiver Overload

Pmax

Data Controls Inc..
Page 3 of 111530-31550dBm
V4.h

SFP Series
LOS De-Assert@1250Mbps

LOSDLOS Assert

LOSA

LOS Hysteresis*(Note7)

-23

dBm

-35

dBm

0.5dB

( GB1550-SFP-SC.S20, 1550nm DFB and PIN, 20km)
Parameter

Symbol9µm Core Diameter SMF

L

Min.

Data Rate

TypicalMax. Unit

20km

1063/1250

Mbps

Transmitter
Center Wavelength

λC

1520

1550

1580nmSpectral Width (-20dB)

∆λ

1nm

Side Mode Suppression Ratio

SMSR

30

Average Output Power*(Note2)

Pout-8Extinction Ratio @ 1250Mbps

ER6

Rise/Fall Time(20%～80%)

tr/tf

Output Optical Eye*(Note3)

Compliant with IEEE 802.3ah-2004*(note6)

TX_Disable Assert Time

t_off

10us

Pout@TX Disable Asserted

Pout-45dBm

1360

nm-22dBm

dB-39dBm
dB260

ps

ReceiverCenter Wavelength

λC1260ReceiverSensitivity*(Note5)@1250Mbps

Pmin

Receiver Overload

Pmax

Return Loss-3dBm

12dB

Optical Path Penalty
LOS De-Assert@1250Mbps
LOS De-Assert@100Mbps
LOS Assert

LOSD
LOSA

LOS Hysteresis*(Note7)

1dB

-23

dBm

-23

dBm

-35

dBm

0.5

dB

Note2: Output is coupled into a 9/125μm single-mode fiber.
Note3: Filtered, measured with a PRBS 27-1.
Note4: LVPECL logic, internally AC coupled.
Note5: Measured at all data rates specified in Data Rate table with ER=9 dB, 27-1 PRBS data pattern, BER <1E-12.
Note6: Eye Pattern Mask

Note7: LOS Hysteresis

Data Controls Inc..
Page 4 of 11V4.h

SFP Series
Functional Description of Transceiver

SFP Transceiver Electrical Pad Layout

Data Controls Inc..
Page 5 of 11V4.h

SFP Series
Pin Function Definitions
PinNO.

Name

Function

PlugSeq.

Notes

1VeeT

Transmitter Ground

15)

2

TX Fault

Transmitter Fault Indication

31)

3

TX Disable

Transmitter Disable32) Module disables on high or open

4MOD-DEF2

Module Definition 233) Data line for Serial ID.

5MOD-DEF1

Module Definition 133) Clock line for Serial ID.

6MOD-DEF0

Module Definition 033) Grounded within the module.

7Rate SelectNot Connect

3Function not available

8LOS

Loss of Signal

34)

9VeeR

Receiver Ground

15)

10VeeR

Receiver Ground15)

11VeeR

Receiver Ground15)

12RD-Inv. Received Data Out

36)

13RD+Received Data Out36)

14VeeR

Receiver Ground15)

15VccR

Receiver Power27) 3.3 ± 5%

16VccTTransmitter Power27) 3.3 ± 5%17VeeT

Transmitter Ground15)

18TD+Transmit Data In38)

19TD-Inv. Transmit Data In38)

20VeeT

Transmitter Ground15)

Notes:
1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor
on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates alaser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled
to < 0.8V.
2) TX disable is an input that is used to shut down the transmitter optical output. It is pulled up
within the module with a 4.7 – 10 KΩ resistor. Its states are:
Low (0 – 0.8V): Transmitter on(>0.8, < 2.0V): UndefinedHigh (2.0 – 3.465V): Transmitter Disabled
Open: Transmitter Disabled
3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K –10K
resistor on the host board. The pull-up voltage shall be VccT or VccR .
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID

Data Controls Inc..
Page 6 of 11V4.h

SFP Series
Mod-Def 2 is the data line of two wire serial interface for serial ID4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K –10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicatesthe received optical power is below the worst-case receiver sensitivity (as defined by the standard
in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
5) VeopteR and VeeT may be internally connected within the SFP module.
6) RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines
which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done
inside the module and is thus not required on the host board.
7) VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5%
at the SFP connector pin. Maximum supply current is 300Ma. Recommended host board power
supply filtering is shown below. Inductors with DC resistance of less than 1 ohm should be used inorder to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When therecommended supply-filtering network is used, hot plugging of the SFP transceiver module will
result in an inrush current of no more than 30Ma greater than the steady state value. VccR andVccT may be internally connected within the SFP transceiver module.
8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with100Ω differential termination inside the module. The AC coupling is done inside the module and isthus not required on the host board.

EEPROM
The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL
AT24C02/04 family of components. When the serial protocol is activated, the host generates theserial clock signal (SCL). The positive edge clocks data into those segments of the EEPROM thatare not write protected within the SFP transceiver. The negative edge clocks data from the SFP
transceiver. The serial data signal (SDA) is bi-directional for serial data transfer. The host usesSDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories
are organized as a series of 8-bit data words that can be addressed individually or sequentially.
The Module provides diagnostic information about the present operating conditions. The
transceiver generates this diagnostic data by digitization of internal analog signals. Calibration andalarm/warning threshold data is written during device manufacture. Received power monitoring,transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperaturemonitoring all are implemented. If the module is defined as external calibrated, the diagnostic data
are raw A/D values and must be converted to real world units using calibration constants stored in
EEPROM locations 56 – 95 at wire serial bus address A2H. The digital diagnostic memory map
specific data field define as following .For detail EEPROM information, please refer to the related
document of SFF 8472 Rev 9.3.

Data Controls Inc..
Page 7 of 11

V4.hSFP Series

Recommended Circuit Schematic

Data Controls Inc..
Page 8 of 11V4.h

SFP Series
Mechanical Specifications

SC*This 2D drawing only for reference, please check with Data Controls Inc. before ordering.

Data Controls Inc..
Page 9 of 11

V4.hSFP Series
Laser Emission

Obtaining Document
You can visit our website:
https://www.dci.jp
Or contact Data Controls Inc.. Listed at the end of the documentation to get the latest document.

Revision History
Revision History

ReleaseDate

V3.aReleased.

Mar 27, 2010

V4.a

Update Recommend
Circuit

A 10, 2011

RevisionV4.bChange Link Budget and Remove EEPROM
Information

Aug 22, 2011

V4.c

Update photo.

Nov 4, 2011

V4.dUpdate Sen

Jan 7，2013

V4.e

Update LOSA ,regulatory compliance and pin
definition note3.

July 03,2014

V4.f

Update the regulatorycompliance, eye pattern mask and 2D drawing,

Oct 9,2015

V4.g

Update the regulatorycompliance, 2D drawing and contact.

V4.hUpdated the regulatorycompliance information.

June 28, 2018

Dec 18, 2018

Data Controls Inc..
Page 10 of 11V4.h

SFP Series
Notice:Data Controls Inc. reserves the right to make changes to or discontinue any optical link product orservice identified in this publication, without notice, in order to improve design and/or performance.
Applications that are described herein for any of the optical link products are for illustrative
purposes only. Data Controls Inc. makes no representation or warranty that such applications will
be suitable for the specified use without further testing or modification.

Contact:
Add: Address: 8F. Fukashiro Bldg.,1-20-4 Yanagibashi, Taito-ku, Tokyo, Japan
Tel: (+81) 3-5829-5805
Fax: (+81) 3-5829-5806
Postal:110-0052
Email: info@dci.jp https://www.dci.jp

Data Controls Inc..
Page 11 of 11V4.h