Quad-frequency clock oscillator — one part, four common telecom/data rates
The Renesas 8N4Q001EG-1020CDI is a FemtoClock NG quad-frequency clock oscillator that outputs four standard rates from a single device: 106.25 MHz, 125 MHz, 156.25 MHz, and 212.5 MHz. That covers the most common line rates for 10GbE, Fibre Channel, InfiniBand, and SONET/SDH reference clocks — one BOM line instead of four separate oscillators.
RoHS non-compliant — plan your assembly line accordingly
This part is RoHS non-compliant. If your contract manufacturer or end customer mandates RoHS, this oscillator cannot be placed on that BOM. The 10-CLCC ceramic package is hermetic and typically used in high-reliability / defence / aerospace builds where the RoHS exemption is accepted or where the assembly process handles leaded solder.
For a storeroom planner, that means you are not forced into a panic buy — but given the niche quad-frequency output and the ceramic package, this is not a high-volume commodity part. Keep an eye on PCNs; if a replacement emerges, the leaded finish may become harder to source as the industry shifts further toward RoHS.
10-CLCC ceramic package — hermetic, surface-mount, 7x5 mm
The package is a 10-lead ceramic leadless chip carrier (10-CLCC) measuring 7x5 mm. Ceramic construction gives a hermetic seal, making this oscillator suitable for humid, high-vibration, or vacuum environments where plastic-packaged oscillators risk moisture ingress or outgassing. It is surface-mount, so it reflows with standard leaded or high-temperature solder profiles. The tray shipping medium is typical for ceramic CLCC parts — they are rarely taped because the ceramic body is brittle and the volumes are lower.