10G SFP+ ER 1310nm 40km LC Optical Transceiver

SKU: SFP-SM31TG-40Dx

Product Highlights

Supports up to 10.7Gbps bit rates

Hot-pluggable SFP+ footprint

1310nm DFB laser and PIN photodiode, Up to 40km for SMF transmission

Compliant with SFP+ MSA and SFF-8472 with duplex LC receptacle

Compatible with RoHS

Single +3.3V power supply

Real Time Digital Diagnostic Monitoring

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SFP‑SM31TG‑40Dx 10.3G SFP+ 1310nm 40km (Commercial / Industrial Temp)

The SFP‑SM31TG‑40Dx series is cost‑effective 10G SFP+ single‑mode optical transceiver, supporting bit‑rate 1.0‑10.7Gbps, typical 10.3125Gbps. It adopts 1310nm DFB laser transmitter and PIN photodiode with TIA preamplifier for up to 40 km transmission over SMF. Two variants available: **SFP‑SM31TG‑40DC commercial temp 0‑70℃, SFP‑SM31TG‑40DI industrial wide temp ‑40~+85℃**. Hot‑pluggable SFP+ footprint with duplex LC receptacle, supporting real‑time DDM digital diagnostic monitoring complying with SFF‑8472. Powered by single +3.3 V supply, compliant with Class I laser safety, SFP+ MSA and RoHS. Suitable for 10GBASE‑ER / EW, LTE transmission, metro backbone and outdoor industrial 40km fiber interconnection.

Technical Specification

Vendor Name	FIBERTOP	FIBERTOP Part Number(s)	SFP-SM31TG-40Dx
Transceiver Type	ER	Reach	40km
Wavelength	1310nm	Form Type	SFP+
Speed Description	40G	Media	SMF
Connector	Duplex LC	Extinction Ratio	> 5 dB
TX Power	-1 ~ 4 dBm	Receiver Sensitivity	< -16 dBm
Applications	10Gbps Optical systems, 10GBASE-ER at 10.3125Gbps, 10GBASE-EW at 9.953Gbps	Environment	Operating: 0°C to 70°C Storage:-40°C to 85°C

Frequently Asked Questions

Q: What is difference between DC and DI version?

A: SFP‑SM31TG‑40DC is commercial temp for indoor data‑center environment (0‑70℃). SFP‑SM31TG‑40DI is industrial grade, ‑40~+85℃ for outdoor base‑station and industrial harsh conditions.

Q: What parameters can DDM monitor?

A: Module temperature, supply voltage, laser bias current, transmit & receive optical power via I2C serial bus.

Q: Supported standards?

A: Supports 10GBASE‑ER,10GBASE‑EW for 10G Ethernet and LTE transmission.

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