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In 5G fronthaul, industrial Internet of Things and power automation systems, precise time synchronization is the core cornerstone for ensuring data reliability. Renesas' digital phase-locked loop (DPLL) chips, such as the RAAxxxx series, have become the "pacemakers" of time-sensitive networks thanks to their native support for IEEE 1588 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE). However, the accelerated technological iteration and the delay of infrastructure projects are causing a large number of brand-new and unopened Renesas DPLL chips to accumulate in enterprise warehouses, transforming from core assets into black holes for funds.

The core value of the Renesas DPLL chip lies in its nanosecond-level time error control capability and multi-protocol compatibility:

IEEE 1588v2/v3 protocol support: By eliminating software stack latency through a hardware timestamp engine, the time synchronization accuracy is compressed to ±5ns, far exceeding the ±100ns level of traditional solutions, meeting the strict time limit requirements between AAU and DU in 5G base stations.

SyncE and hybrid mode switching: When the Ethernet physical layer synchronization fails, it automatically switches to the PTP backup mode to ensure zero-interruption operation in high-reliability scenarios such as power SCADA systems.

Multi-source clock redundancy architecture: Integrating multiple reference clock inputs such as GPS, BITS, and OCXO, it provides "seamless failover" capability for rail transit signal systems.

The backlog of such chips often stems from three types of scenarios

The redundancy of DPLL material preparation caused by the slowdown in the deployment pace of 5G base stations by communication equipment manufacturers; The clock synchronization module of power grid enterprises due to the delay and voltage stagnation of smart substation projects; The core timing chips of the old main control board left over after the upgrade of the industrial automation production line.

Mingjiada Recycling Solution

Facing the high technical threshold and circulation barriers of DPLL chips, Mingjiada has built a triple engine to drive the maximization of recycling value:

Military-grade detection technology, breaking the deadlock of authenticity

Dynamic protocol conformance testing: By simulating the PTP master-slave clock topology, verify the punctuality performance of the chip in harsh scenarios such as message loss and network jitter, and screen out parameter drift products.

Temperature box limit verification: Monitor the output clock phase noise during the -40℃ to 125℃ cycle test to ensure that automotive-grade models (such as the RAA series supporting AEC-Q100) meet the full temperature range indicators.

X-ray structure comparison: By referring to the original Renesas wafer layout diagram, identify Remark or refurbished chips.

2. Supply and demand data-driven dynamic premium model

Based on real-time transaction data from the global terminal market, Mingjiada offers excess premiums for two types of DPLL chips:

Discontinued and scarce models: For instance, the RAA7881 series that initially supported 1588v2, due to the urgent demand in the railway signal system maintenance market, can have a recycling price of 50% to 70% of the original purchase price.

Multi-protocol fusion chip: The RAA306 series compatible with SyncE+PTP+CES has a premium space of up to 30% due to the surging demand for industrial edge gateways.

3. ESG compliant circulation to avoid legal risks

NDA Protocol and label Destruction: Physically crush the batch labels of chips, block the traceability of supply chain information, and protect customer privacy;

R2v3 electronic recycling standard: Ensure that chips are professionally graded before entering the repair market or the recycling manufacturing process, and prevent the illegal dumping of electronic waste.

Four-step Rapid monetization: From Technical Assets to liquid Capital

Mingjiada has compressed the traditional several weeks' recycling cycle to five working days:

List submission: Customer sends DPLL model (e.g. RAA306050/RAA78815), quantity, batch to chen13410018555@163.com;

Video verification: Confirm the sealing performance of the original factory vacuum packaging and the laser marking within 24 hours via video link.

Global flexible delivery: Supports inspection in bonded warehouses in Hong Kong/Singapore or DHL logistics delivery.

Payment upon inspection: Full payment by telegraphic transfer is completed within 48 hours, which is 90% shorter than the industry average payment period.

Unlock the value of your timing chip inventory

▸ Technical evaluation line: Mr. Chen +86 13410018555

▸ email submission list: sales@hkmjd.com

▸ for real-time inquiries, please visit www.hkmjd.com