Nokia AOQB 474943A | Certified QSFP28 to SFP28 100G to 25G Adapter
Brand Name: NOKIA
Product Name: AOQB
Part Number: 474943A
Description: NOKIA AOQB 474943A AirScale optical QSFP28 Transceiver Adapter SFP+ 10G 100G SMF, Nokia AOQB 474943A QSFP28 to SFP28 Adapter. Delivers flawless 100G to 25G port conversion. Certified industrial grade for AirScale 5G networks to ensure zero downtime.
Description
Description
Nokia AOQB 474943A | Certified QSFP28 to SFP28 100G to 25G Adapter
NOKIA AOQB 474943A, AirScale Optical SFP28 QSFP28 SFP28 100GE-25Gb Breakout Lane-1 Passive DOM Bridge I-Temp MSA RoHS
1. Technical Description NOKIA AOQB 474943A
The Nokia AOQB 474943A (tracked primarily under the system shipping code 474943A.102 or structural designation LX5404ENR-C85) is an enterprise-grade, hot-pluggable QSFP28 to SFP28 Rate Converter Adapter Module engineered for high-density 5G telecommunications fronthaul and data center switching networks. Acting as a mechanical and electrical port translator, this specialized interconnector allows network operators to convert a single, high-speed 100 Gigabit Ethernet (100GE) QSFP28 architecture or 40GE QSFP+ port into a lower-speed, single-lane 25Gbps SFP28 or 10Gbps SFP+ slot. This eliminates the need for expensive line card replacements when re-routing transport data paths.
The hardware adapter operates passively to intercept the multi-lane routing footprint of a host system. It maps the first high-speed electrical differential path (Lane 1 / 25Gbps) out of the host’s standard quad-lane array and directly terminates it into the single-lane pin layout of the inserted transceiver. Pre-programmed with integrated I2C pass-through circuitry, the module enables smooth Digital Diagnostic Monitoring (DDM/DOM) data relay back to the Nokia AirScale Baseband host processor. Encased in a ruggedized, fully metallic shell, the unit features an extended Industrial Temperature (I-Temp) capability to survive harsh cabinet microclimates on cellular tower masts.
2. Full Specification and Features NOKIA AOQB 474943A
The architectural design features standard gold-finger edge connector paths built to the SFF-8665 specification, mapping directly to matching SFF-8431 specifications inside the receiver slot to guarantee seamless signal integrity.
Hardware Performance Parameters Matrix
| Parameter Layout | Hardware Adapter Specification Target Value |
|---|---|
| Adapter Class / Form Factor | Hot-Pluggable QSFP28 to SFP28 Port Adapter |
| Data Transmission Conversions | Maps 100 Gbps Quad-Lane down to 25 Gbps Single-Lane |
| Host System Interface Port | Male QSFP28 (Plugs directly into line card) |
| Client Transceiver Slot | Female SFP28 / SFP+ Receptacle Cage |
| Data Signal Protocol Mapping | 100GE to 25GBASE-LR/SR, eCPRI, and 40GE to 10GBASE-LR |
| Internal Data Lane Intercept | Active mapping over Electrical Lane 1 from the host port |
| Signal Power Path Architecture | Passive I2C Pass-Through Bridge (Supports DDM/DOM) |
Electrical Power & Pass-Through Telemetry
- Operating Supply Power: Relies on the host port’s low-voltage +3.3V DC hardware power rail.
- Internal Power Dissipation: Ultra-low efficiency loss drawing < 0.1 Watt baseline (excluding downstream client module draw).
- Maximum Current Path Rating: Supports continuous power lines up to 1.5 Amps to drive long-range 10km/20km client SFP28 transceivers inside the cage.
- EEPROM Interface: Seamless dual-wire data pipeline ensuring the host node reads the inserted client module vendor data cleanly.
Mechanical, Environmental Safety & Structural Compliance
- Physical Housing Footprint: Built exactly to standard QSFP28 structural dimensions to prevent adjacent port blocking.
- Enclosure Structural Material: Enhanced fully metallic zinc-alloy housing structure to isolate and shield against internal Electromagnetic Interference (EMI) noise.
- Hardware Standardization Compliance: Fabricated strictly to match the industry multi-source agreements (SFF-8665, SFF-8431, and QSFP28 MSA).
- Environmental Hazardous Restrictions: 100% RoHS Compliant green construction assembly.
- Operational Temperature Range Threshold: Industrial extended rating certified for continuous performance from -40°C up to +85°C.
4. NOKIA AOQB 474943ASimilar Product from Nokia Portfolio
NOKIA AQOA 474938A: Parallel component structural adapter option designed to interface network breakout options across older generations of Nokia AirScale network processing slots.
5. NOKIA AOQB 474943A Alternative Products from Ericsson and Huawei with Part Numbers
Ericsson Alternatives
Ericsson RDH10272/15: 100GBASE-SR4 QSFP28 Transceiver module).
Huawei Alternatives
Huawei 02312MAQ (Model: QSFP28-SFP28-Adapter): Industrial-grade 100G QSFP28 down-conversion hardware adapter enabling smooth hosting of single-channel 25G SFP28 modules inside high-speed data interfaces.
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