HPE H3C JG325A Compatible 40G QSFP+ SR4 Transceiver Module
Built for hosts recognizing JG325A, this HT-manufactured QSFP+ module delivers 40G transmission at 850nm. Its rated reach is 150m on OM4 / 100m on OM3, with MTP/MPO-12 Male as the physical interface. The specifications and engineering guidance below support field technicians install, maintain and identify the exact compatible module, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: JG325AHT Part Number: QSFP-SR4-40G
Product Highlights
- Compatible alternative to HPE H3C JG325A
- 40G connectivity at 41.25Gbps
- Optical wavelength: 850nm
- Specified reach: 150m on OM4 / 100m on OM3
- 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
| HPE H3C Compatible | JG325A |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-SR4-40G |
| Form Factor | QSFP+ |
| Max. Data Rate | 41.25Gbps |
| Wavelength | 850nm |
| Max. Transmission Distance | 150m@OM4/100m@OM3 |
| Connector | MTP/MPO-12 Male |
| Cable Type | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -7.6~2.4dBm |
| Receiver Sensitivity | <-5.4dBm |
| Digital Optical Monitoring | Yes |
| Receiver Overload | 2.4dBm |
| Max. Power Consumption | ≤1.5W |
| Core Size | 50um |
| Extinction Ratio | >3dB |
| Modulation | NRZ |
| Host FEC | Supported |
| Modal Bandwidth | 2000 (OM3) MHz*km4700 (OM4) MHz*km |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3 40GBASE-SR4, SFF-8436 |
Field Installation and Maintenance
Inspect the connector and patch lead before installation, then support the fiber without pulling on the module housing. Release the latch properly during maintenance and keep dust protection on unused interfaces. If a module is removed for later use, retain its part-number label and record its original port. For this model, the principal parameters are data rate 41.25Gbps, wavelength 850nm, rated reach 150m on OM4 / 100m on OM3.
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 40G 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 150m on OM4 / 100m on OM3 figure applies only under suitable cabling conditions. Inspect every MTP/MPO-12 Male mating point and match the remote optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -7.6~2.4dBm; receiver sensitivity is <-5.4dBm. 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.
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.
HPE H3C Compatibility and Factory Testing
The module is checked for host recognition as JG325A, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original HPE H3C transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies JG325A, not an original HPE H3C-branded module.
Which fiber and connector are required?
Use MTP/MPO-12 Male with MMF. The specified maximum reach is 150m on OM4 / 100m on OM3, 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
When ordering, specify JG325A, QSFP-SR4-40G, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. 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.
