Product comparison · 2 network transceiver modules

Allied Telesis QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm vs Allied Telesis QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm

Key differences

SFP transceiver standard
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:ER4
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:SR4
Maximum transfer distance
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:40000 m
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:150 m
Wavelength
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:1331 nm
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:850 nm
Tx power (min)
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:-3 dBmW
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:-4 dBmW
Link budget
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:16 dB
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:7 dB
Power consumption (typical)
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:3.5 W
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:1.5 W
Storage temperature (T-T)
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:-20 - 85 °C
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:-40 - 85 °C
RX sensitivity
- QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm:-19 dB
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:-11 dB

Differences highlightedShow differences only

Comparison of QSFPER4, QSFPSR4LC
25 specifications	A Allied Telesis QSFPER4 network transceiver module Fiber optic 40000 Mbit/s QSFP 1331 nm Model QSFPER4 View product	B Allied Telesis QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm Model QSFPSR4LC View product
Performance5 differ
SFP transceiver type	Fiber optic	Fiber optic
Maximum data transfer rate	40000 Mbit/s	40000 Mbit/s
Interface type	QSFP	QSFP
Multi-mode fiber (MMF) supportedKnown for one	Unknown — not stated by the source	Yes
Fiber optic connector	LC	LC
SFP transceiver standardDiffers	ER4	SR4
Maximum transfer distanceDiffers	40000 m	150 m
WavelengthDiffers	1331 nm	850 nm
Tx power (min)Differs	-3 dBmW	-4 dBmW
Tx power (max)	5 dBmW	5 dBmW
Link budgetDiffers	16 dB	7 dB
Networking standards	IEEE 802.3ba	IEEE 802.3ba
Digital Diagnostics Monitoring (DDM)	Yes	Yes
Single-mode fiber (SMF) supportedKnown for one	Yes	Unknown — not stated by the source
Featuresidentical
Product colour	Silver	Silver
Housing material	Metal	Metal
Hot-swap	Yes	Yes
Power1 differ
Power consumption (typical)Differs	3.5 W	1.5 W
Certificatesidentical
Compliance certificates	RoHS	RoHS
Operational conditions1 differ
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Storage temperature (T-T)Differs	-20 - 85 °C	-40 - 85 °C
Operating relative humidity (H-H)	0 - 85%	0 - 85%
Packaging contentidentical
Quantity per packKnown for one	Unknown — not stated by the source	1 pc(s)
Other features1 differ
RX sensitivityDiffers	-19 dB	-11 dB
Logistics dataidentical
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	85369010

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.