SFP Series
DB1310-SFP-SC.S20
DB1550-SFP-SC.S20
Single-Mode 155Mbps
SC Single-Fiber SFP Transceiver
RoHS6 CompliantFeatures◆ Support 155Mbps Data Links◆ A type: 1310nm FP TX / 1550nm RX
B type: 1550nm FP TX / 1310nm RX◆ 20km with 9/125 µm SMF◆ Single 3.3V Power Supply and TTL Logic Interface◆ Hot-Pluggable SFP Footprint SC/LC Connector
Interface

Applications◆ Class 1 FDA and IEC60825-1 Laser Safety
Compliant◆ SONET OC-3 / SDH STM-1◆ Operating Case Temperature◆ WDM Fast Ethernet Links

Standard: 0℃~+70℃◆ Other Optical Links

Industrial: -40℃~+85℃◆ Compliant with SFP MSA Specification◆ Compliant with SFF 8472 MSA

Ordering information
Part No.

Data Rate

Wavelengt
hInterface

Temp.

DDMI

DB1310-SFP-SC.S20

100M~155Mbps

1310nmSCStandard

YES

DB1550-SFP-SC.S20

100M~155Mbps

1550nmSCStandard

YES

DB1310-SFP-SC.S20(WT)

100M~155Mbps

1310nmSC

Industrial

YES

DB1550-SFP-SC.S20(WT)

100M~155Mbps

1550nmSC

Industrial

YES

Data Controls Inc.
Page 1 of 11

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SFP Series
Regulatory ComplianceFeatureStandard

PerformanceElectrostatic Discharge(ESD) to theElectrical Pins

MIL-STD-883G
Method 3015.7

Class 1C (>1000 V)

Electrostatic Discharge
to the enclosure

EN 55024:1998+A1+A2
IEC-61000-4-2
GR-1089-CORE

Compliant with standards

FCC Part 15 Class B
EN55022:2006
CISPR 22B :2006
VCCI Class B

Compliant with standards
Noise frequency range:
30MHz to 6GHz. Good system
EMI design practice required
to achieve Class B margins.
System margins aredependent on customer hostboard and chassis design.

EN 55024:1998+A1+A2
IEC 61000-4-3

Compliant with standards.
1KHz sine-wave, 80% AM,
from 80MHz to 1GHz. No
effect on transmitter/receiver
performance is detectablebetween these limits.

Electromagnetic
Interference (EMI)

Immunity

Laser Eye Safety

FDA 21CFR 1040.10 and 1040.11 CDRH compliant and Class I
EN (IEC) 60825-1:2007
laser product.
EN (IEC) 60825-2:2004+A1
TüV Certificate No. 50135086

Component Recognition

UL and CUL
EN60950-1:2006

UL File E317337
TüV Certificate No. 50135086(CB scheme )RoHS6

2002/95/EC 4.1&4.2
2005/747/EC 5&7&13

Compliant with standards*note3

Note2: For update of the equipments and strict control of raw materials, DATA CONTROLS INC. has the ability tosupply the customized products since Jan 1 st, 2007, which meet the requirements of RoHS6 (Restrictions on use ofcertain Hazardous Substances) of European Union.
In light of item 5 in RoHS exemption list of RoHS Directive 2002/95/EC, Item 5: Lead in glass of cathode ray tubes,
electronic components and fluorescent tubes.
In light of item 13 in RoHS exemption list of RoHS Directive 2005/747/EC, Item 13: Lead and cadmium in opticaland filter glass. The three exemptions are being concerned for Data Controls Inc.’s transceivers, because DataControls Inc.’s transceivers use glass, which may contain Pb, for components such as lenses, windows, isolators,
and other electronic components.

Data Controls Inc.
Page 2 of 11V1.b

SFP Series
Product Description
The DB1310/1550-SFP-SC.S20 is small form factor pluggable module for IEEE 802.3ah
100BASE-BX10 and OC-3/STM-1 SONET/SDH single fiber applications by using 1310
nm/1550nm(1550nm/1310nm) transmitter and 1550nm/1310nm(1310nm/1550nm) receiver. It iswith the SFP 20-pin connector to allow hot plug capability.
The transmitter section uses a multiple quantum well A type / B type laser and is a class 1 laser
compliant according to International Safety Standard IEC 60825. The receiver section uses anintegrated A type/ B type detector preamplifier (IDP) mounted in an optical header and a limiting
post-amplifier IC.
The DB1310/1550-SFP-SC.S20 are designed to be compliant with SFF-8472.

Absolute Maximum Ratings*Note3
Parameter

Symbol

Min.

Max.

Unit

Storage Temperature

Ts-40+85°C

Supply Voltage

Vcc-0.5

3.6

V

-95%

Operating Relative Humidity*Note3: Exceeding any one of these values may destroy the device permanently.

Recommended Operating Conditions
Parameter

SymbolOperating CaseTATemperature

Typical

Max.

0+70

DB1310-SFP-SC.S20(WT)-40+85

DB1550-SFP-SC.S20(WT)
Vcc

3.15

DB1310-SFP-SC.S20

Unit
°C

DB1550-SFP-SC.S20

Power Supply Voltage
Power Supply Current
Date Rate

Min.

3.3

Icc

3.45

V

300mA

OC-3

155

Mbps

100M

100Mbps

Performance Specifications - ElectricalParameter

SymbolMin.
Typ.
Transmitter

Max

Unit

Notes

LVPECL
Inputs(Differential)

Vin

400

2000mVpp

AC coupled
inputs*(note5)

Input Impedance

Zin

85115

ohms

Rin > 100100(Differential)
TX_DisTX_FAULT

kohms @DC

Disable2Vcc+0.3Enable00.8

Fault

2

Vcc+0.3

Normal00.5

VV

Receiver
Data Controls Inc.
Page 3 of 11V1.b

SFP Series
LVPECL Outputs(Differential)

Vout

400

Output Impedance(Differential)

Zout

85

RX_LOS

100

2000

mVpp

115

ohms

LOS

2

Vcc+0.3

V

Normal0V
V

MOD_DEF ( 0:2 )

VoH

20.8
3.6

VoL

00.5

AC coupled
outputs*(note5)

V

With Serial ID

Optical and Electrical Characteristics(DB1310-SFP-SC.S20, 1310nm FP and PIN, 20km)
Parameter

Symbol9µm Core Diameter SMF

LMin.

Data Rate

TypicalMax.

Unit20km100155Mbps

1310

Transmitter
Center Wavelength

λC

1260

Average Output Power*(note3)

Pout-15Extinction Ratio*(note4)

ER

16

Rise/Fall Time(20%～80%)
Output Optical Eye*(note4)

tr/tf

TX_Disable Assert Time

t_off

10us

Pout@TX Disable Asserted

Pout-45

dBm

1580

nm

-34

dBm

1360

nm

-810dBm

2nsdB

IUT-T G.957 Compliant*(note7)

ReceiverCenter Wavelength
Receiver Sensitivity*(note6)
Receiver Overload

λC

1500

Pmin
Pmax

LOS De-Assert

LOSD

LOS Assert

LOSA

1550

-8dBm
-35

LOS Hysteresis*(note8)dBm-45dBm

0.5dB(DB1550-SFP-SC.S20, 1550nm FP and PIN, 20km)
Parameter

Symbol9µm Core Diameter SMF

LMin.

Data Rate

TypicalMax.

Unit

20km

155Mbps

Transmitter
Center Wavelength

λC

1500

Average Output Power*(note3)

1550

1580

nm-810dBm

2ns

Pout-15Extinction Ratio*(note4)

ER

16

Rise/Fall Time(20%～80%)
Output Optical Eye*(note4)

tr/tf

TX_Disable Assert Time

t_off

10us

Pout@TX Disable Asserted

Pout-45dBm

dB

IUT-T G.957 Compliant*(note7)

Receiver
Data Controls Inc.
Page 4 of 11V1.b

SFP Series
Center WavelengthλC

Receiver Sensitivity*(note6)
Receiver Overload

Pmin
Pmax

LOS De-Assert

LOSD

LOS Assert

LOSA

1260

1310

1360

nm-34

dBm

-8

dBm
-35

LOS Hysteresis*(note8)

dBm

-45

dBm

0.5

dB

Note3: Output is coupled into a 9/125µm single-mode fiber.
Note4: Filtered, measured with a PRBS 2 23-1 test pattern @155Mbps
Note5: LVPECL logic, internally AC coupled.
Note6: Minimum average optical power measured at BER less than 1E-10, with a 223-1 PRBS and ER=9 dB.
Note7: Eye Pattern Mask

Note8: LOS Hysteresis

Data Controls Inc.
Page 5 of 11V1.b

SFP Series
Functional Description of Transceiver

SFP Transceiver Electrical Pad Layout

Data Controls Inc.
Page 6 of 11V1.b

SFP Series
Pin Function Definitions
PinNum.

Name

Function

PlugSeq.

Notes

1VeeT

Transmitter Ground15)

2

TX Fault

Transmitter Fault
Indication

31)

3

TX Disable

Transmitter Disable32) Module disables on high or
open

4

MOD-DEF2

Module Definition 233) Data line for Serial ID.

5

MOD-DEF1

Module Definition 133) Clock line for Serial ID.

6

MOD-DEF0

Module Definition 033) Grounded within themodule.

7Rate SelectNot Connect

3Function not available

8LOS

Loss of Signal

34)

9VeeR

Receiver Ground

15)

10VeeR

Receiver Ground15)

11VeeR

Receiver Ground

15)

12RD-

Inv. Received Data Out

36)

13RD+

Received Data Out

36)

14VeeR

Receiver Ground15)

15VccR

Receiver Power27) 3.3 ± 5%

16VccTTransmitter Power27) 3.3 ± 5%17VeeT

Transmitter Ground

15)

18TD+

Transmit Data In

38)

19TD-

Inv. Transmit Data In

38)

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) Modulation Absent, connected to VEET or VEER in the module.
4) 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 indicates
Data Controls Inc.
Page 7 of 11V1.b

SFP Series
the received optical power is below the worst-case receiver sensitivity (as defined by the standardin use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
5) VeeR 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. The voltage swing on these lines will
be between 400 and 2000 mV differential (200 –1000mV single ended) when properly terminated.
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. The inputs will accept differential swings of 400 – 2000mV(200 – 1000mV single-ended).

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 uses
SDA 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 8 of 11

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SFP Series

Recommend Circuit Schematic

Data Controls Inc.
Page 9 of 11

V1.b

SFP Series
Mechanical Specifications

SC

Class 1 Labels

Laser Emission Data
Wavelength

1310nmTotal output power (as defined by FDA: 7mm aperture at 20cm distance)<0.195mW

Total output power (as defined by IEC: 7mm aperture at 10cm distance)<15.6mW

Beam divergence

12.5°

Wavelength

1550nmTotal output power (as defined by FDA: 7mm aperture at 20cm distance)<0.79mW

Total output power (as defined by IEC: 7mm aperture at 10cm distance)<10mW

Beam divergence

12.5°

Data Controls Inc.
Page 10 of 11

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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

Revision History

Release Date

V1

Initial releaseNov 4, 2011

V1.a

Changed Format

Nov. 2017

V1.b

Changed PhotoMar. 2018Notice:
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:
E-mail: info@dci.jp
https://www.dci.jp

Data Controls Inc.
Page 11 of 11V1.b