HPE J8438A Compatible XFP X2 10GBASE-ER Transceiver Module

The J8438A compatible module serves equipment requiring a XFP X2 interface with 1550nm optics and a 40km rating. Connection is through SC duplex. Product data, application guidance and factory verification are presented together to support structured fiber installations preserve a documented and serviceable optical channel.
OEM Part Number: J8438AHT Part Number: J8438A
Product Highlights
- Compatible alternative to HPE J8438A
- XFP connectivity at 10Gbps
- Optical wavelength: 1550nm
- Specified reach: 40km
- SC duplex / SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| HPE Compatible | J8438A |
|---|---|
| Manufacturer | HT |
| HT Part Number | J8438A |
| Form Factor | X2 |
| Max. Data Rate | 10Gbps |
| Wavelength | 1550nm |
| Max. Transmission Distance | 40km |
| Connector | SC duplex |
| Transmitter Type | EML 1550nm |
| Media | SMF |
| DOM Support | Yes |
| TX Power | -4.7~4dBm |
| Receiver Sensitivity | < -15.8dBm |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
Applications and Optical Link Design
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
Before deployment, check the host port type, supported data rate and firmware requirements. The XFP interface configuration must match the remote equipment; sharing a X2 housing alone does not make two transceiver types interoperable.
Wavelength-selective links require the exact channel plan at both ends. Confirm that filters pass 1550nm, then include their insertion loss in the 40km power budget. A nearby channel is not a substitute for the specified wavelength.
HPE Compatibility and Factory Testing
Compatibility testing for J8438A 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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -4.7~4dBm; receiver sensitivity is < -15.8dBm. 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.
Structured Fiber Pathways and Serviceability
Treat the transceiver as part of the complete channel. Follow the intended patch-panel route, maintain bend control and leave service access around the port. Confirm connector polish and fiber type at every mated pair; a documented service allowance is preferable to excess slack concealed inside a rack. For this model, the principal parameters are data rate 10Gbps, wavelength 1550nm, rated reach 40km.
Ordering Information
Quote HT part number J8438A together with OEM reference J8438A 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.
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.
Quality Assurance and Packaging
Each J8438A compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
Frequently Asked Questions
Is this an original HPE transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies J8438A, not an original HPE-branded module.
Which fiber and connector are required?
Use SC duplex with SMF. The specified maximum reach is 40km, 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.
J8438A