Circuit Board Support Peg

Name: PCB Pegs & Board Spacers for Structural Circuit Alignment – Frigate
Price: 249.00 USD
Availability: InStock

Circuit Board Support Peg is used to reinforce printed circuit assemblies under static and dynamic mechanical loading conditions. It acts as a distributed support element that controls PCB deflection during connector mating, depanelization, or enclosure mounting. By providing vertical compression resistance, Circuit Board Support Peg mitigates localized bending stress, reducing the risk of solder joint fatigue and trace delamination, especially in large form-factor and multilayer boards.

Material Specification

Stainless Steel 303 (ASTM A582), Brass C360 (ASTM B16)

Dimensional Tolerances

±0.02mm (Critical Features), ±0.05mm (Overall Profile), Hole Position – ±0.01mm

Length

5–50mm (±0.1mm), Custom Lengths Available

Diameter

Ø2–10mm (±0.01mm), Tapered Options (0.5°–1°)

Thread Specifications

M2–M6 (Metric), 4-40 to 10-32 (UNC/UNF), Thread Class – 2A/2B

Product Description

Circuit Board Support Peg plays a critical role in maintaining PCB coplanarity throughout thermal excursions in reflow, wave, and selective soldering processes. Its low coefficient of thermal expansion ensures dimensional stability when the board substrate undergoes rapid temperature transitions, thereby preventing pad lifting, solder bridging, and BGA collapse. Circuit Board Support Peg supports reflow integrity by anchoring critical zones prone to thermal warpage.

Head/Base Features

Hex Head (2.5–8mm AF), Flanged Base (Ø5–15mm), Knurled Grip (Optional)

Surface Finish

Ra ≤0.8µm (Shaft), Ra ≤1.6µm (Non-Critical), Bead Blast (Optional, Ra 3.2µm)

Burr-Free Requirement

Zero Burrs (ISO 13715), Edge Radius ≤0.1mm, Visual Inspection at 10x Magnification

Protective Coating/Plating

Passivated (SS, ASTM A967), Nickel Plated (Brass, ASTM B733), Black Oxide (Optional)

Certification Standards

ISO 9001, RoHS/REACH Compliant, UL 94 V-0 (Flammability), IPC-610 (Acceptability)

Technical Advantages

Circuit Board Support Peg ensures consistent Z-axis control across high-speed surface mount production lines by acting as a passive mechanical datum. This positional repeatability prevents nozzle collisions, stencil misalignment, and improper part placement. Circuit Board Support Peg supports process capability by controlling vertical displacement within ±0.05 mm, which is essential for solder paste integrity and minimizing AOI false calls in densely populated boards.

Circuit Board Support Peg offers a non-conductive, low-dielectric alternative to metallic standoffs and fasteners that can interfere with controlled impedance paths. By replacing metal supports with high-resistance polymeric materials, Circuit Board Support Peg eliminates unintended capacitive coupling and parasitic signal losses in RF, analog, or differential pair circuits. It is particularly valuable in systems requiring strict electromagnetic compatibility and ground isolation.

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Industry Applications

Automotive Control Modules

Supports rigid mounting of PCBs in ECU housings, ensuring mechanical stability during engine vibration and thermal cycling conditions.

Telecommunication Base Stations

Maintains PCB coplanarity in high-density RF boards to prevent connector misalignment and ensure signal integrity under field conditions.

Medical Imaging Equipment

Provides structural support to multilayer PCBs, minimizing flexure-induced sensor drift in MRI, CT, and diagnostic imaging assemblies.

Industrial Motor Drives

Secures power electronics boards against thermal expansion stress, preventing delamination and solder fatigue in high-current inverter modules.

Consumer Electronics Devices

Controls PCB warpage in compact enclosures, preserving clearances and alignment for connectors, displays, and mechanical interface points.

Avionics Flight Control Systems

Withstands extreme vibration and acceleration profiles while preserving PCB integrity and component anchoring in mission-critical avionics enclosures.

Design Optimization for Compact Electronic Assemblies

Circuit Board Support Peg is designed with minimal vertical footprint and customizable standoff height to accommodate tight mechanical envelopes in compact electronic assemblies. Its precise form factor enables routing clearance around critical components such as BGAs, underfill zones, and heat sinks without compromising board rigidity. Circuit Board Support Peg geometry can be tailored to support either single- or double-sided PCB layouts with controlled mechanical anchoring.

Circuit Board Support Peg is compatible with automated insertion equipment and wave solder fixtures, making it suitable for high-volume assembly lines. Pegs are manufactured with stable thermoplastics that resist swelling or distortion during aqueous cleaning, flux exposure, and ultrasonic degreasing. Circuit Board Support Peg integrates into tooling nests and palletized processes without affecting thermal profiles or ionic cleanliness standards.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure dimensional repeatability in custom Circuit Board Support Pegs for high-density PCB layouts?

Frigate uses precision injection molding with mold tolerances controlled within ±0.02 mm. This ensures that every Circuit Board Support Peg maintains consistent height and diameter across batches. Such tight control is critical in high-density PCBs where Z-axis clearance is limited. Frigate also performs in-process dimensional checks using optical metrology.

What type of material analysis does Frigate perform before selecting polymers for Circuit Board Support Pegs?

Frigate conducts thermal and mechanical property analysis, including DSC for thermal transitions and DMA for modulus characterization. Only materials with stable behavior up to 260°C and low moisture absorption are approved. Circuit Board Support Pegs must also pass dielectric breakdown and volume resistivity tests. This guarantees performance in mixed-signal and high-voltage environments.

How does Frigate validate peg insertion force to avoid PCB damage during assembly?

Frigate performs mechanical testing on each peg geometry using calibrated push-pull fixtures. Optimal insertion force is kept between 4 N and 10 N to ensure retention without stressing plated holes. Peg profiles are tuned based on PCB thickness and hole tolerance class. This ensures secure fitment without causing pad lifting or cracking.

How are Frigate’s Circuit Board Support Pegs adapted for conformal coating compatibility?

Frigate uses coating-resistant polymers and smooth surface finishes that minimize capillary wicking of conformal coatings. Pegs are designed with standoff features to prevent coating pooling around vias. Material compatibility is tested with acrylic, silicone, and urethane coatings. This protects signal integrity while meeting IPC-CC-830B requirements.

Can Frigate design multi-height Circuit Board Support Pegs for boards with variable component clearances?

Yes, Frigate can create dual-height or stepped support pegs using multi-cavity tooling or insert molding. This supports PCBs with split-level regions or uneven under-component heights. CAD models and tolerance stacks are analyzed to ensure clearance for heat sinks or shield cans. Frigate also validates board loading profiles to prevent asymmetric stress distribution.

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