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Stable 40G single mode optic with reliable 10km reach.
QSFP-40G-eSM4
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40GBase-eSM4 Optical Transceiver,QSFP+,40G,Single-mode Modul...
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Name:
QSFP-40G-eSM4
- Description:
- 40GBase-eSM4 Optical Transceiver,QSFP+,40G,Single-mode Module (1310nm,10km,MPO)(Connect to four SFP+ Optical Transceiver)
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Huawei
- GTIN:
- 6920702724629
- Condition:
- Warranty:
- 3
- List Price:
$5,804.84
- Price:
$754.6287% off
Quantity:
1
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QSFP-40G-eSM4 Overview
QSFP-40G-eSM4 is a QSFP transceiver module engineered to deliver a 40G data rate over short-range transmission using high-performance multimode fiber optics. Featuring an MPO connector and a wavelength typically centered around 850 nm, this module supports Ethernet protocols and is ideally suited for data center interconnects, enterprise networks, and telecom applications where efficient, high-speed data transmission is critical.
Designed with a compact form factor, the QSFP-40G-eSM4 fits seamlessly into high-density networking equipment while adhering to rigorous industry standards for performance and reliability. Its precise physical dimensions, power efficiency, and broad compatibility with leading vendors such as Cisco, Juniper, Huawei, and Arista further make it an excellent choice for modern network infrastructures.
QSFP-40G-eSM4 price is $754.62, a 87% saving from the Huawei list price of $5,804.84. QSFP-40G-eSM4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40G-eSM4 for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.
QSFP-40G-eSM4 Specifications
- Product Type
- Transceiver
- Form Factor
- QSFP
- Data Rate
- 40G
- Connector Type
- MPO
- Wavelength
- 850 nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 100 meters
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 4.0W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- QSFP-40G-eSM4
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QSFP-40G-eSM4 |  DWDM-SFPGE-1559-79 |  DWDM-SFPGE-1546-92 |  XFP-STM64-LH40-SM1550 |  Huawei eSFP-FE-LX-SM1310-BIDI | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Huawei |
| Connector Type | MPO | LC | LC | LC | LC |
| Data Rate | 40G | 1G | 1G | 10G | 1G |
| Depth | N/A | N/A | 1.00 inches | 2.00 inches | N/A |
| Fiber Type | Multi-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Form Factor | QSFP | SFP | SFP | XFP | SFP |
| Height | N/A | N/A | 0.125 inches | 0.65 inches | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 100 meters | N/A | 80 km | 40 km | 10 km |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 4.0W | N/A | 2.5W | N/A | N/A |
| Product Name | QSFP-40G-eSM4 | DWDM-SFPGE-1559-79 | DWDM-SFPGE-1546-92 | XFP-STM64-LH40-SM1550 | Huawei eSFP-FE-LX-SM1310-BIDI |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet |
| Transmission Distance | Short-Range | Long-Range | Long-Range | Long-Range | Long-Range |
| Wavelength | 850 nm | 1559 nm | 1546.92 nm | 1550 nm | 1310 nm |
| Weight | N/A | N/A | 0.05 lbs | 0.20 lbs | N/A |
| Width | N/A | N/A | 0.55 inches | 1.10 inches | N/A |
Reviews & Ratings
R
Ralph Thornton
5
Clean optical lanes with predictable output.
M
Melvin Grant
5
Seamless breakout to SFP+ modules.
F
Frederick Cole
5
Consistent performance in aggregation layer.
V
Vernon Hayes
5
Carrier grade reliability observed.
D
Douglas Patterson
5
Dependable 40G QSFP+ module.
Questions & Answers
What is the QSFP-40G-eSM4 40GBase-eSM4 Optical Transceiver module?
The QSFP-40G-eSM4 is a 40GBase-eSM4 QSFP+ single-mode optical transceiver operating at 1310 nm with an MPO interface, designed for 10 km links and connectivity to four SFP+ modules.
What transmission distance does the QSFP-40G-eSM4 support?
The QSFP-40G-eSM4 supports single-mode fiber transmission distances of up to 10 kilometers under standard operating conditions.
What wavelength does the QSFP-40G-eSM4 use?
It operates at a nominal wavelength of 1310 nm, optimized for 40GBase-eSM4 single-mode optical links.
What connector type does this QSFP+ module feature?
The module features an MPO (8-fiber) connector interface that provides four parallel transmit and receive lanes.
Is the QSFP-40G-eSM4 compatible with SFP+ transceivers?
Yes. It aggregates four 10 Gbps lanes via an MPO breakout cable to connect seamlessly with four SFP+ transceivers.
What data rate does the QSFP-40G-eSM4 support?
The transceiver supports an aggregate data rate of 40 Gbps, comprising four independent 10 Gbps channels.
Which fiber type is required for the QSFP-40G-eSM4?
It requires single-mode fiber (SMF) optimized for 1310 nm wavelengths to achieve its specified reach.
What network protocols does the QSFP-40G-eSM4 support?
It is compliant with IEEE 802.3ba 40GBase-eSM4 and QSFP+ MSA specifications for form factor, electrical, and optical performance.
Does the QSFP-40G-eSM4 support digital diagnostics monitoring (DDM)?
Yes. It supports Digital Diagnostics Monitoring via a 2-wire serial interface for real-time monitoring of optical power, temperature, and supply voltage.
What is the operating temperature range of the QSFP-40G-eSM4?
The module operates reliably within a temperature range of 0 °C to 70 °C (commercial grade).
What is the power consumption of the QSFP-40G-eSM4?
Typical power consumption is ≤3.5 Watts per module, depending on link conditions and operating environment.
How do I install the QSFP-40G-eSM4 transceiver?
Insert the QSFP+ transceiver into a compatible QSFP port until it latches, connect the MPO cable, and verify link status via your network device.
Is the QSFP-40G-eSM4 RoHS compliant?
Yes. The QSFP-40G-eSM4 is RoHS 6-compliant, ensuring it is free of hazardous substances like lead, mercury, and cadmium.
Does the QSFP-40G-eSM4 comply with industry MSAs?
Yes. It adheres to the QSFP+ Multi-Source Agreement (MSA) for mechanical dimensions, electrical interfaces, and optical performance.
What are the typical applications for the QSFP-40G-eSM4?
It is ideal for data center spine-leaf architectures, high-performance computing clusters, and enterprise core or distribution networks requiring 40 GbE up to 10 km.
How can I troubleshoot connectivity issues with the QSFP-40G-eSM4?
Check fiber polarity and cleanliness, verify MPO breakout cable mapping, confirm SFP+ compatibility, and review DDM diagnostics for power and temperature anomalies.