Sierra Assembly Technology Inc.

Specializing in electronic circuit board assembly services. Various capabilities include engineering, assembly, designing, prototyping, supply chain management, testing, documentation, rework, repair and soldering. On-time delivery.
As a contract manufacturer of high-technology electronic assemblies, Sierra Assembly provides a full range of manufacturing and engineering services.
From prototype to production, Sierra Assembly delivers consistent quality, dependability, on-time delivery, and prompt responsiveness at all points in our processes.

Service Offered:
• PCB ASSEMBLY
• BGA & MICRO BGA PLACEMENT
• CABLE AND WIRE HARNESS ASSEMBLY
• PCB DESIGN & REVERSE ENGINEERING
• BOX BUILD ASSMEMBLY
• CONFORMAL COATING
• IC PROGRAMMING
• IN CIRCUIT TESTING/FUNCTIONAL TESTING
• X-RAY INSPECTION
• AUTOMATED OPTICAL INSPECTION
• BGA REWORK


Our Capabilities
Technical
• Laser alignment & vision systems for SMT placement.
• Auto-calibration for SMT lines.
• BGA, μ-BGA, ultra-fine pitch QFP, QFN, and CSP, FCP & 0201
placement & repair.
• Component placement to 7-mil pitch.
• High layer & ultra-dense component counts.
• On site firmware programming.
• 10-zone air convection reflow system with nitrogen atmosphere
option.
• X-Ray laminography.
• Surface Mount Addendum
• Largest BGA Size: 75mm x 75mm
• BGA Pitch Range: 0.25 mm - 3 mm
• Largest QFP Size: 75mm x 75mm
• Smallest QFP Pitch: 0.25 mm - 3 mm
• Largest PCB/Panel Size: 18" x 20"
• Smallest PCB/Panel size: 1.2" Wide
• Smallest Space between Adjacent Components: 0.005"
• Smallest Passive Component Size: 0201
• Bed of Nails (Fixture) ICT Test Station: Genrad 2280
• Component Placement Speeds:
• Juki - 12,500/Hr.
• Component Placement Accuracy:
• Juki - ±30μm (3 Sigma)

Manufacturing
• Complex RoHS & non-RoHS PCAs up to 18”x20”.
• PTH, SMT & mixed technology assembly.
• Single and double-sided assembly.
• No clean flux process & closed loop aqueous cleaning system.
• Conformal coating & potting compliant with IPC-CC-830B.
• Cable & harness assembly.
• Complete mechanical assembly.
• Fixture & fixtureless in circuit & functional testing.
• Repair/rework including BGA & QFP.
Our Comprehensive Services

Design
• Electrical, PCB & layout capabilities.
• DFT & DFM engineering support.
• Component selection/BOM creation support.
Prototyping
• Quick turn – 1 to 5 days.
• Turnkey, consignment, or mixed model.
• One piece through beta run.
• Machine & hand placement.
• Reflow and hand soldering.

NPI (NEW PRODUCT