Sierra Electronics – Advanced Quality Control & Aerospace-Grade Adhesive Qualification

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U.S.-Manufactured SMT Splice Tape · High-Tension Covertape · Aerospace-Certified Adhesive Systems

Premium Adhesives from: 3M · Saint-Gobain · Nitto Tested and Certified in Santa Fe, New Mexico – USA

Quality Control Overview – U.S. Aerospace & SMT Adhesive Validation

Sierra Electronics operates the most rigorous SMT splice tape quality control program in the United States, engineered for
high-reliability SMT production, 0201 micro-component assembly, aerospace PCB manufacturing, and defense-grade feeder tension requirements.

Unlike foreign importers and repackagers, Sierra physically tests every incoming adhesive master roll from 3M, Saint-Gobain, and Nitto
before converting it into:

  • SMT splice tape
  • Covertape extenders
  • Covertape connectors
  • Flat punched carrier tape leaders
  • USA-made SMT splice kits
  • Leaderless reel recovery products

This documented, high-precision QC workflow is something imported Chinese splice tapes cannot match. Sierra is a true U.S. manufacturer, not an importer.

Quality Control Overview – U.S. Aerospace & SMT Adhesive Validation

Sierra Electronics operates the most rigorous SMT splice tape quality control program in the United States, engineered for high-reliability SMT production, 0201 micro-component assembly, aerospace PCB manufacturing, and defense-grade feeder tension requirements. Unlike foreign importers and repackagers, Sierra physically tests every incoming adhesive master roll from 3M, Saint-Gobain, and Nitto before converting it into:
  • SMT splice tape
  • Covertape extenders
  • Covertape connectors
  • Flat punched carrier tape leaders
  • USA-made SMT splice kits
  • Leaderless reel recovery products
This documented, high-precision QC workflow is something imported Chinese splice tapes cannot match. Sierra is a true U.S. manufacturer, not an importer.

1. Peel-Force Testing (Adhesion Strength Verification)

Every incoming roll undergoes full peel-force dynamometer testing, validating:

  • Initial tack consistency
  • Peel strength (gf/cm and oz/in)
  • Shear resistance
  • Release-liner uniformity
  • Aging, dwell, and tension behavior

Materials failing Sierra’s tight aerospace-grade adhesive tolerance bands are rejected immediately.

2. Static-Load Holding Power Test (24-Hour & Weekend Hold)

Sierra simulates real SMT production tension using calibrated stainless-steel weights and vertical fixtures.

Tests replicate:

  • 24-hour continuous SMT feeder tension
  • Friday-to-Monday extended weekend holds
  • Panasonic/NPM, Fuji, Siemens, Samsung high-tension feeder paths
  • Partial-reel feeding with covertape extenders
  • Long dwell times on dense pocket carrier tape

This ensures zero Monday-morning failures.

3. Extreme Tension Simulation (High-Speed SMT Feeder Stress Test)

Adhesive samples are subjected to multi-hour cyclic tension simulating:

  • High-speed pick-and-place indexing
  • Reverse feed cycles
  • Emergency stop/start tension spikes
  • Deep-pocket 0201/0402 carrier tape advancement
  • Heavy stainless SMT reel operation

Only adhesives passing Sierra’s high-cycle fatigue requirements are accepted.

4. Sierra Weekend Hold Certification (Exclusive Test)

This Sierra-only method simulates:

  • SMT line setup late Friday
  • Reel loaded with Sierra Covertape Extenders, Sierra Covertape Connectors, and Sierra Splice Tape
  • Full feeder tension sustained until Monday morning

This test exposes adhesive creep, cold-flow, delamination, liner memory failure, and bond fatigue, none of which are screened by importers.

5. Batch Traceability & QC Logging

Every roll receives:

  • Sierra batch ID
  • Supplier lot correlation
  • Complete adhesive performance profile
  • Peel-force curves
  • Holding-power durations
  • Shear displacement data
  • Inspector verification

Nothing enters production without a full QC release.

5. Batch Traceability & QC Logging

Every roll receives:

  • Sierra batch ID
  • Supplier lot correlation
  • Complete adhesive performance profile
  • Peel-force curves
  • Holding-power durations
  • Shear displacement data
  • Inspector verification

Nothing enters production without a full QC release.

6. Why Sierra Performs These Tests

Our adhesives support mission-critical industries requiring zero adhesive drift and perfect tension reliability:

  • Aerospace avionics
  • Defense PCB assembly (MIL-spec lines)
  • Medical electronics
  • Automotive ADAS and safety systems
  • Ultra-dense 0201 SMT pick-and-place

Sierra ensures:

✓ High-tension feeder reliability

✓ Repeatable splice integrity

✓ Zero on-line adhesive failure

✓ OEM/EMS audit-ready documentation

✓ 100% U.S.-controlled supply chain

Aerospace-Grade Adhesive Qualification Appendix (A1–A7)
Full Test Data for Batch: SE-8429-112425-A
Inspector: R. Sierra
Date: 11/24/2025

A1. High-Load Peel Adhesion Test (ASTM D3330 Extended)
Requirement: ≥220 oz/in
Results: 235, 228, 231
Average: 231 oz/in
Status: PASS

A2. Thermal Peel Performance
High-Temperature Adhesion (85°C): 174 oz/in → PASS
Cryogenic Adhesion (−40°C): 163 oz/in → PASS

A3. High-Stress Static Shear (ASTM D3654 Extreme)
Load: 2.0 kg
Requirement: ≥24 hours, ≤0.05 mm creep
All samples: NO FAILURE
Status: PASS

A4. 96-Hour Extended Holding Power Test
Load: 3.0 kg
Requirement: ≥96 hours
Results: 98–103 hours
Status: PASS

A5. Vibration Endurance Test (MIL-STD-810H)
Profile: 5–500 Hz
Duration: 4 hours
Status: PASS

A6. Environmental Stress Testing
Thermal Shock: PASS
Humidity Chamber (95% RH @ 60°C): PASS

Test Category Requirement Result
Peel Adhesion ≥220 oz/in PASS
Thermal Performance ≥150–160 oz/in PASS
Static Shear ≥24 hrs PASS
96-hr Hold @ 3kg ≥96 hrs PASS
Vibration No delamination PASS
Thermal Shock No failure PASS
Humidity Stress No failure PASS

Inspector:

R. Sierra – Sierra Electronics

The Only U.S. Manufacturer of SMT Splice Tapes, Covertape Extenders, Leader Tape Extenders, and High-Reliability Splicing Systems

Picture of Robert Sierra

Robert Sierra

Founder of Sierra Electronics, has dedicated his career to advancing SMT tape splicing solutions. With decades of expertise and a passion for innovation, he built the company on reliability, precision, and customer trust.

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