845966-B21 HPE Compatible 100GBASE-SR4 QSFP28 Transceiver
HP compatible 845966-B21 - Key Features
- Compatibility: HP
- Media Type: 4 Lanes of Multi-Mode Fiber (MMF)
- Connector: MTP/MPO-12 (UPC)
- Fiber Count: 8 Fibers
- Maximum Distance: 100 m
- Average Link Budget: 1.9 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 103.125 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): No
- Temperature Range: Standard 0°-70°C
HP 845966-B21 Price
In Stock - Ships Next Business DayHP compatible 845966-B21 Specifications
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | 4 Lanes of Multi-Mode Fiber (MMF) |
Connector | MTP/MPO-12 (UPC) |
Fiber Count | 8 Fibers |
Maximum Distance | 100 m |
Average Link Budget | 1.9 dB |
TX Wavelength | 850 nm |
RX Wavelength | 4-channel 850 nm |
Supported Data Rate | 103.125 Gbps |
Supported Ethernet Applications | 100G Ethernet (103.125 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | No |
Transmitter Type | VSCEL Laser |
Tx Wave Bandwidth | 20 nm (840-860 nm) |
Average Launch Power (Min) Each Lane | 3 dBm |
Average Launch Power (Max) Each Lane | 7.5 dBm |
Extinction Ratio (Min) | 3 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 20 nm (840-860 nm) |
Average Receiver Sensitivity (Min) Each Lane | -10.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 2.4 dBm |
Receiver Overload | 3.4 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 3.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3bm, 100GBASE-SR4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
HP compatible 845966-B21 Datasheet
v3Complete technical specifications and product details
HP compatible 845966-B21 Description
EdgeOptic's 845966-B21 compatible is an HPE-coded 100GBASE-SR4 version of the EdgeOptic 100G-QSFP28-100 multi-vendor QSFP28 transceiver, one universal short-reach module coded for a range of server and switch vendors. The OEM part is the HPE 100Gb QSFP28 MPO SR4 100m Transceiver, an HPE server-side transceiver option. It runs 100G Ethernet over four parallel 850 nm VCSEL lanes at 25G each across multimode fiber, terminated on an MTP/MPO-12 (UPC) connector using 8 active fibers, 4 transmit and 4 receive. The transceiver port is female (unpinned); the patch cable is the pinned male side. Reach is 70 m over OM3 and 100 m over OM4, per IEEE 802.3bm Clause 95.
Optical specifications match the OEM module: a 1.9 dB average link budget, receiver sensitivity of −10.3 dBm per lane, NRZ modulation, and no FEC required at this reach. The transmitter uses VCSEL lasers at 850 nm; the receiver is a PIN photodiode. The reach figures assume standard multimode attenuation, so OM4 supports the full 100 m while OM3 is rated to 70 m, with achievable distance depending on patch panels, splices, and connector cleanliness in the installed link. DDM/DOM is supported, so the host can read live optical power, temperature, bias, and voltage. The module operates across the 0°C to 70°C commercial temperature range at 3.5 W and is compliant with the QSFP28 MSA and SFF-8665. This is a 100G Ethernet short-reach optic; it does not carry Fibre Channel, OTN, or SONET traffic.
EdgeOptic codes this compatible with HPE-recognized EEPROM for the server transceiver coding target. Compatible with HPE ProLiant server platforms that have 100G QSFP28 adapter ports. Confirm the specific server and adapter against the HPE QuickSpecs before deployment. For HPE Aruba networking switches, order the Aruba-coded JL309A instead, which uses a different EEPROM coding target for the same optical specification. Full optical specifications are on the datasheet below.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For project pricing or technical consultation, contact our sales team.
Frequently Asked Questions
Is the 845966-B21 a server transceiver or an Aruba networking transceiver?
845966-B21 is HPE's server-side transceiver option, coded for HPE ProLiant compute with 100G QSFP28 adapters. The optically identical Aruba switching version is JL309A, which uses an Aruba EEPROM coding target. Match the SKU to the platform: order the 845966-B21 compatible for HPE servers and the JL309A compatible for Aruba switches.