On The Spot Assembly

About On The Spot Assembly

On The Spot Assembly operates from Granger, Texas, in the Central Texas corridor near Austin's Silicon Hills. The company was founded in 2011 by Ernest G., who launched the business after more than 15 years in the electronics industry, including roles at multiple startups focused on RF and analog applications where he handled IC layout and full circuit-board assembly. The shop specializes in quick-turnaround micro-electronic assembly for prototype and mid-volume runs with no minimum order quantity. Its privately owned facility houses a precision placement machine (PPM) for SMT placement, magnification workstations for hand assembly, custom fine-pitch solder stations, a framed stainless-steel stencil system accepting sheets up to 23 by 23 inches, and an ultrasonic cleaner using 99.9% isopropyl alcohol or de-ionized water. Processes cover surface-mount and through-hole placement, single- and double-sided boards, fine-pitch components down to 0201 and 0.35 mm QFN/DFN packages, BGA, TQFP, PLCC, and QFN assembly, as well as prototype rework including trace repair, component stacking, and fine-wire modifications. The company supports the full prototype iteration cycle, offering phased batch deliveries, on-site rework assistance, and courier service for local clients. The founder established OTSA to simplify and accelerate the PCB assembly process, reducing product development time for innovators. The operation emphasizes honest communication, diligent workmanship, and a well-defined IPC Class 2–based process that can be customized per project, with a guarantee to resolve any issues that arise.

Equipment

• Precision placement machine (PPM)
• Ultrasonic cleaner
• Framed stainless-steel stencil system (up to 23" x 23")
• Custom fine-pitch solder stations
• Magnification workstations for hand assembly

Company details

Location

Granger, Texas

Company type

Contract manufacturer / job shop

Founded

2011

Minimum order

No minimum order quantity

Production volume

Prototypes to mid-volume production (no minimum order quantity)

Lead time

Quick-turnaround

Tolerances

Fine-pitch down to 0.35 mm; 0201 component placement

Frequently asked questions