| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | SFP-25G-SR-S | |
| 2 | Arista Networks | SFP-25G-SR | |
| 3 | Brocade | 25G-SFP28-SR | |
| 4 | H3C | SFP-25G-SR-MM850 | |
| 5 | HPE BladeSystem | 845398-B21 | |
| 6 | Huawei | SFP-25G-SR | |
| 7 | Juniper | JNP-SFP-25G-SR | |
| 8 | NVIDIA(Mellanox) | MMA2P00-AS |
| HPE Compatible | 845398-B21 | Vendor Name | HYTOPTODEVICE |
| Form Factor | SFP28 | Max Data Rate | 25Gbps |
| Wavelength | 850nm | Max Distance | 70m over OM3 / 100m over OM4 |
| Connector | Duplex LC | Transmitter Type | VCSEL |
| Cable Type | MMF | Receiver Type | PIN |
| TX Power | -6.0~+2.4dBm | Receiver Sensitivity | < -10.3dBm |
| Max. Power Consumption | ≤1W | DOM/DDM | Fully Supported |
| Protocols | SFF-8472, SFF-8024, SFF-8431, SFF-8432 | Operation Temperature | 0 to 70°C (32 to 158°F) |
3. Free Custom EEPROM & Bulk OEM Service
Cost-effective HPE BladeSystem 845398-B21 replacement SFP28 SR Transceiver for blade server & data center bulk procurement:
Q1: Is it feasible to install a 25G SFP28 SR transceiver into a 10G SFP+ hardware slot?
A1: This SFP28 SR Transceiver cannot work normally within 10G SFP+ slots due to inconsistent pin layout, electrical protocols and transmission rate logic. Mismatched slot types will result in unrecognized hardware and total link failure. Our factory suggests matching port specifications strictly, ideal planning for HPE BladeSystem mixed-rate network SFP28 SR Transceiver bulk procurement.
Q2: Is FEC forward error correction function supported on this HPE BladeSystem compatible SFP28 SR Transceiver?
A2: All our 845398-B21 SFP28 SR Transceiver fully support RS-FEC function. Enabling FEC on HPE Virtual Connect interconnect ports maximizes OM4 fiber transmission distance and boosts anti-interference capacity for long-distance blade cabinet cabling.
Q3: Is stable link transmission achievable when matching one 25G SR module with a 25G LR long-reach transceiver on the same fiber link?
A3: Mixing SR multimode and LR single-mode transceivers on one link is not supported. The two variants adopt different light wavelengths and fiber design standards, leading to severe signal attenuation and permanent link failure. Unified SR or LR modules must be deployed end-to-end for blade SAN networking.
Q4: Is it possible to split a single 100G QSFP28 SR4 port into four independent 25G SFP28 SR transmission channels via breakout wiring?
A4: Yes, this SFP28 SR Transceiver perfectly matches 100G SR4 breakout cables to realize 4×25G high-density splitting. It effectively upgrades port utilization on HPE c7000 interconnect modules, a top choice for blade data center high-density breakout SFP28 SR Transceiver wholesale purchase.
Q5: My cabling adopts standard OM4 multimode fiber, yet the 100m links keep losing packets. What causes this issue?
A5: Common root causes include disabled RS-FEC, dirty fiber end faces, excessive stacked patch cords or low-quality non-compliant OM4 cable. Our technical team offers free pre-deployment cabling inspection for all bulk orders to eliminate packet loss risks in blade enclosure infrastructure.
Q6: What makes certain 25G SFP28 SR transceivers overheat severely inside fully populated HPE blade interconnect bays?
A6: Excessive heat mainly comes from inferior high-power chips and poor heat dissipation structures unsuitable for sealed blade cabinet airflow. Our SFP28 SR Transceiver adopts ≤1.0W low-power circuit design with optimized thermal structure, maintaining stable temperature even in full-load blade chassis deployment.
Q7: The DOM monitoring displays low received signal strength or alarm prompts, how to resolve this issue?
A7: Low RX power alarms usually stem from contaminated fiber ports, bent fiber cables, mismatched fiber grades or excessive link attenuation. We supply complimentary fiber cleaning kits for large procurement batches to regularly maintain optical ports and fix signal loss issues on HPE BladeSystem networks.
Q8: How to distinguish suppliers that supply refurbished or B-class defective laser components inside optical modules?
A8: HYTOPTODEVICE only deploys brand-new industrial VCSEL lasers for all SFP28 SR Transceiver batches. We provide complete component origin certification and batch inspection records for every bulk shipment, completely avoiding recycled and substandard laser raw materials for enterprise blade project construction.
Q9: What standardized test documents and inspection criteria can your factory provide for bulk SFP28 SR Transceiver orders?
A9: We deliver full compliance test reports covering optical power testing, 72-hour full-load aging cycles, HPE BladeSystem interconnect compatibility verification and laser safety certification. All testing strictly follows IEEE 25GBASE-SR and SFP28 MSA industry standards to guarantee consistent batch quality for blade infrastructure construction SFP28 SR Transceiver bulk tender orders.
Q10: What operating wavelength does the SFP28 25G SR multimode transceiver adopt?
A10: This HPE BladeSystem compatible SFP28 SR Transceiver uses an 850nm VCSEL light source, the standard wavelength for 25GBASE-SR multimode short-distance transmission, matching OM3/OM4/OM5 multimode fiber specifications for blade cabinet internal networking.
Q11: Can this SFP28 SR multimode transceiver be used for 5G wireless fronthaul CPRI or eCPRI signal transmission?
A11: This module is designed for 25GBASE-SR Ethernet transmission and does not support native CPRI/eCPRI fronthaul protocols. We provide dedicated customized optical transceivers for 5G fronthaul deployment upon special bulk project requests.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
