156.25 MHz fixed-frequency oscillator — BOM-fit note
The Texas Instruments LMK61A2-156M25SIAR is a 156.25 MHz fixed-frequency oscillator in a 6-SMD module, supplied in a 6-QFM (7x5) package. It is a surface-mount device intended as a precision clock source for networking, data converter, or FPGA reference applications where that specific frequency is required.
Package and land pattern
The 6-QFM package measures 7x5 mm, a compact footprint for a hermetically sealed oscillator module. The surface-mount body requires a solder paste stencil aperture sized to the pad layout in the datasheet; the 6-pin QFM has a central thermal pad that should be vias to a ground plane for heat sinking. Delivery is on Tape & Reel (TR), which means it feeds directly into a pick-and-place machine without a tube-to-reel transfer step.
For a fixed-frequency oscillator, this is the stable sourcing position — no last-time-buy window to track, no risk of a forced redesign for a clock source.