Juniper Networks QSFPP-4X10GE-SR Compatible 10G QSFP+ Transceiver Module

Juniper Networks QSFPP-4X10GE-SR Compatible 10G QSFP+ Transceiver Module

The QSFPP-4X10GE-SR compatible module serves equipment requiring a 10G QSFP+ interface with 850nm optics and a 400m on OM4 rating. Connection is through MTP/MPO-12 Male. Product data, application guidance and factory verification are presented together to support data-center designers evaluate optical reach, rack integration and host compatibility together.

OEM Part Number: QSFPP-4X10GE-SRHT Part Number: QSFP-CSR4-40G

Product Highlights

  • Compatible alternative to Juniper Networks QSFPP-4X10GE-SR
  • 10G connectivity at 42Gbps (4x 10.5Gbps)
  • Optical wavelength: 850nm
  • Specified reach: 400m on OM4
  • MTP/MPO-12 Male / MMF interface
  • Operating temperature: 0 to 70°C (32 to 158°F)
  • Factory compatibility verification and optical performance testing before shipment

Specifications

Juniper Networks CompatibleQSFPP-4X10GE-SR
ManufacturerHT
HT Part NumberQSFP-CSR4-40G
Form FactorQSFP+
Max. Data Rate42Gbps (4x 10.5Gbps)
Wavelength850nm
Max. Transmission Distance400m@OM4
ConnectorMTP/MPO-12 Male
MediaMMF
Transimitter TypeVCSEL 850nm
Receiver TypePIN
TX Power-7.5~0dBm
Receiver Sensitivity<-9.9dBm
Power Budget2.4dB
Receiver Overload2.4dBm
Max. Power Consumption≤1.5W
Extinction Ratio>3dB
Host FECSupported
Bit Error Ratio (BER)1E-12
Operating Temperature0 to 70°C (32 to 158°F)
Protocols40G Ethernet, SATA/SAS3, IEEE 802.3ba, MSA Compliant

Applications and Optical Link Design

Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The MTP/MPO-12 Male interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.

Before deployment, check the host port type, supported data rate and firmware requirements. The 10G interface configuration must match the remote equipment; sharing a QSFP+ housing alone does not make two transceiver types interoperable.

For this multimode module, confirm fiber grade, modal bandwidth and total loss before commissioning. The 400m on OM4 figure applies only under suitable cabling conditions. Inspect every MTP/MPO-12 Male mating point and match the remote optical standard.

Quality Assurance and Packaging

Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. Customer references, rack groups and project packing lists can be added for volume orders.

Optical Acceptance, Diagnostics and Handling

For this model, the specified transmit-power range is -7.5~0dBm; receiver sensitivity is <-9.9dBm; the stated optical power budget is 2.4dB. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.

Data-Center Optical Design and Airflow

Select the module by optical standard, reach and rack layout. Check the complete fiber channel, including panels and connectors, and keep dense bundles from blocking front-panel airflow. Account for listed power consumption and preserve enough space to remove a module without disturbing adjacent links. For this model, the principal parameters are data rate 42Gbps (4x 10.5Gbps), wavelength 850nm, rated reach 400m on OM4.

Ordering Information

Quote HT part number QSFP-CSR4-40G together with OEM reference QSFPP-4X10GE-SR and quantity. Add the host model and software release when pre-order verification is required. Neutral labels, customer packaging and project-specific compatibility review are available on request.

Juniper Networks Compatibility and Factory Testing

Compatibility testing for QSFPP-4X10GE-SR combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.

Frequently Asked Questions

Is this an original Juniper Networks transceiver?

No. It is an HT-manufactured compatible alternative for equipment that specifies QSFPP-4X10GE-SR, not an original Juniper Networks-branded module.

Which fiber and connector are required?

Use MTP/MPO-12 Male with MMF. The specified maximum reach is 400m on OM4, subject to fiber quality and total link loss.

Can it be mixed with another wavelength or reach version?

Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.

Shipping and Lead Time

Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.


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