Odd form insertion projects are not evaluated from the component name alone. A connector, relay, terminal, capacitor, switch, fuse holder, or other through-hole part may look suitable in a catalogue, but the real result depends on the component geometry, lead condition, packaging, PCB layout, insertion direction, downstream process, and production target.

A useful first review therefore starts with evidence from the actual product. The information below helps an engineering team identify the main risks and decide what should be tested next.

1. PCB information

Provide clear, current information for the board that will be used in production:

  • High-resolution images of the top and bottom sides.
  • PCB dimensions, thickness, and panel format.
  • Gerber files or dimensioned drawings when they are available for engineering review.
  • The insertion coordinates and orientation of each target component.
  • Hole diameter, hole spacing, and relevant tolerances.
  • Keep-out areas, nearby components, board-edge clearance, and any mechanical restrictions.
  • Conveyor direction and the intended process direction if the equipment must connect to an existing line.

A photograph is useful for understanding the assembly, but it does not replace dimensions. Small differences in hole size, lead pitch, or available clearance can change the tooling and handling approach.

2. Component records

Prepare one record for every component that is expected to be inserted automatically. The record should include:

  • Manufacturer and complete part number.
  • Datasheet and dimensioned component drawing.
  • Body dimensions, lead diameter, lead pitch, lead length, and permitted tolerances.
  • Quantity used on each PCB.
  • Required insertion direction and polarity or orientation rules.
  • Current packaging method, such as tape, tray, tube, reel, stick, or bulk supply.
  • Clear photos of the component from several angles and photos of the original packaging.

Samples should match the intended production material. Hand-formed samples, mixed supplier batches, or parts removed from a finished board may not represent the feeding condition of new components.

3. Feeding and presentation

Feeding is often one of the most important parts of an odd form insertion project. Please explain how the component is supplied today and whether the packaging can be changed.

Useful questions include:

  • Is the component orientation consistent inside the package?
  • Can leads become bent, crossed, oxidised, or entangled during transport?
  • Does the component have a stable surface for gripping or vision recognition?
  • Is polarity visible and repeatable?
  • Is there a supplier-approved tape, tray, or tube option?
  • What batch variation has been observed between suppliers or production lots?

A feeder concept should not be confirmed from a catalogue image. Actual samples and original packaging are normally required before the feeding method can be evaluated with confidence.

4. Current process and production target

Describe the present manufacturing process rather than only the desired machine speed:

  • How the component is inserted today.
  • Whether leads are pre-formed, cut, clinched, or otherwise prepared.
  • Current labour input and boards produced per shift or per day.
  • Product mix, changeover frequency, and typical batch size.
  • Main problem to solve: capacity, labour availability, consistency, damage, traceability, or another constraint.
  • Expected project schedule and the reason behind it.

The target cycle time should be connected to the complete board and component mix. A theoretical insertion rate by itself does not show whether feeding, board transfer, inspection, changeover, or downstream soldering will become the limiting step.

5. Downstream process and line integration

Explain what happens immediately before and after insertion. This may include board loading, manual assembly, AOI, lead inspection, selective soldering, wave soldering, or unloading.

The engineering review should also consider:

  • Required board support and fixture conditions.
  • Whether inserted components must remain stable before soldering.
  • Lead protrusion and clinching requirements.
  • Existing conveyor height, direction, and communication requirements.
  • Available floor space and operator access.
  • Quality checks and traceability expectations.

These details help prevent a locally workable insertion step from creating a new problem elsewhere in the production line.

6. Representative samples

For a meaningful test, prepare representative PCBs and enough components from the intended production packaging. The exact quantity depends on the component, feeder concept, test scope, and expected variation, so it should be agreed before samples are shipped.

Sample testing may examine feeding stability, component recognition, gripping, insertion, board support, lead condition, orientation control, and the condition of the PCB after insertion. Passing a short demonstration does not automatically confirm long-term production performance; the test criteria should match the decision being made.

What an initial review can determine

With the information above, an engineering team can usually identify:

  • Which components appear suitable for further automation evaluation.
  • Which parts need sample testing or a customized feeding study.
  • The main PCB, tooling, feeding, and integration questions.
  • Whether more production data is required before discussing a preliminary concept.

It is still too early to treat the first review as final confirmation of feasibility, cycle time, machine configuration, or price. Those conclusions depend on current engineering evidence and, for many odd form components, representative sample testing.

A practical submission package

A clear submission package can contain one PCB folder, one component table, drawings and datasheets, current-process photos or video, production targets, and a sample list. Use consistent component reference names across every file.

This structure makes the review easier to trace and helps the customer and engineering team agree on the next concrete step.