HPE H3C JD121A Compatible 10G XFP ER Transceiver Module
Built for hosts recognizing JD121A, this HT-manufactured XFP module delivers 10G transmission at 1550nm. Its rated reach is 40km, with LC duplex as the physical interface. The specifications and engineering guidance below support project teams keep OEM references, delivery records and port schedules aligned, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: JD121AHT Part Number: XFP-10GER-55
Product Highlights
- Compatible alternative to HPE H3C JD121A
- 10G connectivity at 10Gbps
- Optical wavelength: 1550nm
- Specified reach: 40km
- LC duplex / SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| HPE H3C Compatible | JD121A |
|---|---|
| Manufacturer | HT |
| HT Part Number | XFP-10GER-55 |
| Form Factor | XFP |
| Max. Data Rate | 10Gbps |
| Wavelength | 1550nm |
| Max. Transmission Distance | 40km |
| Connector | LC duplex |
| Transmitter Type | EML 1550nm |
| Media | SMF |
| DOM Support | Yes |
| TX Power | 0~4dBm |
| Receiver Sensitivity | <-16dBm |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | SFP+ MSA Compliant, CPRI, eCPRI |
Project Documentation and Traceability
Large deployments are easier to audit when the order code, optical standard and endpoint record agree. Keep the OEM reference in the compatibility document and the HT part number on the packing list. Labels and carton groups can be arranged by rack or port plan so installers need not identify modules by appearance. For this model, the principal parameters are data rate 10Gbps, wavelength 1550nm, rated reach 40km.
HPE H3C Compatibility and Factory Testing
Compatibility testing for JD121A 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.
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 10G interface configuration must match the remote equipment; sharing a XFP 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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 0~4dBm; receiver sensitivity is <-16dBm. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. 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.
Frequently Asked Questions
Is this an original HPE H3C transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies JD121A, not an original HPE H3C-branded module.
Which fiber and connector are required?
Use LC 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.
Ordering Information
Use JD121A as the compatibility cross-reference and XFP-10GER-55 as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. 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
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.
