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845972-B21
Compatible optical transceiver

HPE Aruba 845972-B21 Compatible CT-Q40/100-SRBD QSFP28 BiDi 850/880/910/940nm 100m DOM Duplex LC/UPC MMF Optical Transceiver Module

Form Factor: QSFP28
Max Reach: 100M
Interface Type: LC
Media: MM
Part number 845972-B21

Fully compatible Carritech alternative

Carritech Optics can offer CT-Q40/100-SRBD as a fully compatible, high-quality alternative to HPE Aruba 845972-B21. This Carritech alternative is matched against the key optical specifications and can be programmed and tested for your network requirements.

Carritech part number: CT-Q40/100-SRBD

40/100G QSFP28 SRBD 100M

High-performance QSFP28 bi-directional transceiver for 40G/100G Ethernet over multimode fiber (MMF), supporting dual-wavelength 850/900 nm PAM4 transmission with up to 100 m reach on OM4 fiber. Optimized for short-range data center interconnects with LC duplex interface and low power consumption.

This transceiver is a compatible alternative for the following manufacturer part numbers: (10)

QSFP-100G-SRBD QSFP-100G-SR1.2 QSFP-40/100-SRBD 407-BBYM 10407 F5-UPG-QSFP28-SRBD CT-Q40/100-SRBD JQ344A JNP-QSFP-100G-BXSR PAN-QSFP28-100GBASE-BIDI

Quality assured Tested, compliant and backed by lifetime warranty.

Lifetime Warranty
FCC Mark
CE Mark
RoHS Compliant
ISO 9001
ISO 14001
Hardware compatibility

Popular hardware this transceiver is compatible with:

The hardware listed below is a selection of key popular equipment, not a complete compatibility list. This transceiver may also be compatible with many other hardware models. Contact us and we can check the exact hardware you need.

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Product information

845972-B21 Details

Review the technical specifications, applications, features, delivery information and warranty coverage for this product.

Especificações

01
O 40/100G QSFP28 SRBD Optical Transceiver is a high-performance, multi-rate module designed for short-range communication over multimode fiber (MMF). This transceiver supports both 40G and 100G Ethernet standards, utilizing a dual-wavelength VCSEL bi-directional optical interface operating at 850nm and 900nm. It offers an aggregate bandwidth exceeding 100Gbps and is compatible with QSFP28 MSA and IEEE 802.3bm standards. Designed to operate over OM3 MMF up to 70 meters and OM4 MMF up to 100 meters, the transceiver is ideal for data center interconnects, switch and router connections, and backplane applications.

The module operates on a single +3.3V power supply with power consumption below 3.5W and functions reliably within a temperature range of 0°C to 70°C. With a duplex LC optical interface, it allows the reuse of existing cabling infrastructure. The transceiver employs PAM4 modulation for two 50Gbps electrical channels, transmitting and receiving data optically over a single LC duplex fiber. Its advanced design enables compatibility with proprietary protocols, making it a versatile choice for high-speed networking environments. Additionally, it complies with RoHS standards, underscoring its environmentally friendly construction.

The CT-Q40100-SRBD is a pluggable QSFP28 SR transceiver designed for duplex short-range 40G and 100G Ethernet links. It multiplexes four 25.78125 Gb/s electrical lanes into two 50 Gb/s PAM4 optical channels, using bi-directional VCSEL technology at 850 nm and 900 nm wavelengths. Transmission distances reach up to 70 m on OM3 MMF and 100 m on OM4 MMF. The module supports a single +3.3 V power supply with power dissipation under 3.5 W, and operates in a 0 °C to 70 °C case temperature range. It uses a duplex LC connector for optical connections and a 38-contact QSFP28 edge connector for electrical interface.

Principais especificações

  • Form factor / standard: QSFP28, MSA compliant, IEEE 802.3bm 100G XLPPI electrical interface.
  • Aggregate bandwidth: 100 Gb/s.
  • Alcance: 70 m (OM3) / 100 m (OM4).
  • Optical interface: Dual-wavelength VCSEL, PAM4 modulation, 850 nm (CH1) and 900 nm (CH2).
  • Conector: LC duplex.
  • Consumo de energia: 2.5–3.5 W max; supply current 0.75–1.0 A.
  • Tensão de alimentação: 3.13-3.47 V.
  • Temperatura da caixa de operação: 0 °C to +70 °C.
  • Conformidade: RoHS.

Optical characteristics (per channel)

Parâmetro Valor
Wavelengths 850 nm (CH1), 900 nm (CH2)
Average TX power −6 to +4 dBm
Rácio de extinção ≥ 3 dB
Sensibilidade do recetor ≤ −8 dBm
Max input power +0.5 dBm
LOS assert / de-assert −30 to −10 dBm
Receiver reflectance ≤ −15 dB

Aplicações

02
  • 100G Ethernet interconnects within and between racks in data centers.
  • Switch and router connections in datacom and telecom networks.
  • Data aggregation and backplane links requiring high-density, short-reach optics.
  • Proprietary high-bandwidth applications leveraging LC duplex cabling.

Caraterísticas

03

Carritech Optics can offer a fully compatible, high-quality alternative to HPE Aruba 845972-B21.

Carritech part number: CT-Q40/100-SRBD

  • Bi-directional dual-wavelength VCSEL technology (850/900 nm PAM4).
  • Supports both 40G and 100G Ethernet over MMF.
  • Duplex LC connector, enabling reuse of existing cabling.
  • Compact QSFP28 form factor with hot-pluggable design.
  • Low power operation (< 3.5 W) for efficient deployment.
  • Compliant with IEEE 802.3bm, SFF-8636, QSFP28 MSA.
  • No digital diagnostic monitoring (DDM/DOM).

Entrega

04

At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers, including the 845972-B21, is designed to cater to various requirements, ensuring that you receive the best solutions for your projects. We understand the importance of timely delivery, and our efficient processes are geared towards providing you with the products you need as quickly as possible. Our dedicated team works tirelessly to ensure that your orders are processed and dispatched promptly, so you can rely on us for swift and reliable service.

Reconhecemos que cada projeto é único e a nossa abordagem flexível permite-nos adaptarmo-nos às suas necessidades específicas. Quer necessite de uma entrega imediata ou tenha requisitos mais complexos, estamos aqui para o apoiar em cada passo do processo. O nosso compromisso com a satisfação do cliente significa que nos esforçamos ao máximo para garantir que recebe os seus transceptores SFP em tempo útil, sem comprometer a qualidade. Confie na Carritech para fornecer as soluções de que precisa, quando precisa delas.

Garantia

05

Na Carritech Optics, defendemos a qualidade e a fiabilidade dos nossos transceptores ópticos. É por isso que temos o orgulho de oferecer uma garantia vitalícia para todos os produtos, como prova do nosso compromisso com a excelência e a satisfação do cliente.

O que é que a nossa garantia vitalícia cobre?

A nossa garantia vitalícia oferece uma cobertura abrangente para todo o ciclo de vida dos seus transceptores ópticos, assegurando-lhe total tranquilidade ao escolher a Carritech Optics. A garantia cobre:

  • Defects in Materials and Workmanship: If your product experiences any issues related to manufacturing or materials, we’ll repair or replace it free of charge.
  • Performance Assurance: Our optical transceivers are rigorously tested to meet industry standards, and we guarantee they’ll perform as expected in your network environment.

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Se alguma vez precisar de fazer um pedido de garantia, a nossa equipa está aqui para o ajudar. Basta contactar a nossa equipa de apoio com os detalhes do seu produto e iremos orientá-lo através de um processo rápido e sem complicações para resolver o problema.

O desempenho da sua rede, garantido

A Carritech Optics dedica-se a fornecer soluções ópticas de alta qualidade em que pode confiar a longo prazo. Com a nossa garantia vitalícia, pode investir com confiança nos nossos produtos, sabendo que estamos consigo em todas as fases do processo.

Ficha de dados

06

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845972-B21 JQ344A HPE Aruba CT-Q40/100-SRBD CT-Q40/100-SRBD QSFP28 BiDi 100m CT-Q40/100-SRBD QSFP28 BiDi 850/880/910/940nm 100m DOM Duplex LC/UPC MMF Optical Transceiver Module QSFP28 100M LC MM