H3C QSFPDD-800G-2FR4-WDM1300-DLC Compatible 800G QSFP-DD Transceiver Module
This H3C QSFPDD-800G-2FR4-WDM1300-DLC compatible transceiver provides 800G connectivity in a hot-swappable QSFP-DD package. Its optical design operates at 1271nm, 1291nm, 1311nm and 1331nm for up to 2km, using Dual Duplex LC/UPC. Complete parameters and related OEM references help project teams keep OEM references, delivery records and port schedules aligned.
OEM Part Number: QSFPDD-800G-2FR4-WDM1300-DLCHT Part Number: QDD-2FR4-800G
Product Highlights
- Compatible alternative to H3C QSFPDD-800G-2FR4-WDM1300-DLC
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Optical wavelength: 1271nm, 1291nm, 1311nm and 1331nm
- Specified reach: 2km
- Dual Duplex LC/UPC / SMF interface
- Factory compatibility verification and optical performance testing before shipment
Specifications
| H3C Compatible | QSFPDD-800G-2FR4-WDM1300-DLC |
|---|---|
| Manufacturer | HT |
| HT Part Number | QDD-2FR4-800G |
| Form Factor | QSFP-DD |
| Max Data Rate | 850Gbps (8x 106.25Gbps) |
| Wavelength | 1271nm, 1291nm, 1311nm and 1331nm |
| Max Cable Distance | 2km |
| Connector | Dual Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | PIN |
| TX Power | -3.2~4.4dBm |
| Minimum Receiver Power | -7.2dBm |
| Power Budget | 4dB |
| Receiver Overload | 4.4dBm |
| Max Power Consumption | 17W |
| Extinction Ratio | ≥3.5dB |
| Modulation (Electrical) | 8x100G-PAM4 |
| Modulation (Optical) | 8x100G-PAM4 |
| Packaging Technology | COB (Chip on Board) Packaging |
| CDR (Clock and Data Recovery) | TX and RX Built-in DSP |
| Inbuilt FEC | No |
| Protocols | IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0 |
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 850Gbps (8x 106.25Gbps), wavelength 1271nm, 1291nm, 1311nm and 1331nm, rated reach 2km.
H3C Compatibility and Factory Testing
Factory verification starts with the expected QSFPDD-800G-2FR4-WDM1300-DLC identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. 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 800G interface configuration must match the remote equipment; sharing a QSFP-DD housing alone does not make two transceiver types interoperable.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 2km route. Keep the Dual Duplex LC/UPC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -3.2~4.4dBm; the stated optical power budget is 4dB. 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 H3C transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFPDD-800G-2FR4-WDM1300-DLC, not an original H3C-branded module.
Which fiber and connector are required?
Use Dual Duplex LC/UPC with SMF. The specified maximum reach is 2km, 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
Quote HT part number QDD-2FR4-800G together with OEM reference QSFPDD-800G-2FR4-WDM1300-DLC 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
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. Customer references, rack groups and project packing lists can be added for volume orders.
