# From Requirements to Connector BOM with ProFind’s Guided Catalogue

Use circuit, wire, environment, and packaging requirements to select official catalogue products, check their connections, and build a reviewable connector BOM.

- Category: Engineering workflows
- Audience: Hardware engineers, founders, system architects, harness designers, and students
- Published: 2026-08-11
- Updated: 2026-10-13
- Reading time: 9 minutes

## Direct answer

Start with circuit count, load, voltage, wire, environment, mounting, packaging, and sourcing requirements. Use ProFind’s guided catalogue questions when the official API provides them, or browse categories and product types directly. Select an exact product, add the connected parts you need, and review the official API compatibility checks and BOM before approving the assembly.

## Key takeaways

- Better inputs produce a smaller and more defensible candidate space.
- Official catalogue records and API compatibility checks support each product selection.
- Every selected node should remain inspectable and replaceable.
- The engineer approves load cases, environment, packaging, and release evidence.

## Write an engineering brief

Write measurable requirements before browsing. A request such as “pick a waterproof automotive connector” omits the conditions that distinguish a plausible family from a buildable assembly.

**Minimum useful connector requirement**

| Requirement | Example detail |
| --- | --- |
| Circuits | 3 power/signal wires plus one spare |
| Load | 2 A continuous, 4 A transient, 12 VDC |
| Wire | 18 AWG, 2.4 mm insulation OD |
| Environment | Outdoor mobile machine, water and vibration |
| Architecture | Sealed inline service disconnect |
| Constraints | In-stock catalog parts, hand-serviceable contacts |

## Move from requirements to exact catalogue selections

1. Record the circuit, wire, electrical, environmental, mechanical, and sourcing requirements.
2. Resolve missing or contradictory requirements before treating a candidate as suitable.
3. Answer catalogue questions when offered, or browse the official categories and product types.
4. Select the exact manufacturer and starting product, then inspect its declared connected product types.
5. Use the official compatibility results to choose the mates, contacts, locks, seals, accessories, or tooling needed for the application.
6. Review the node builder and BOM; replace or remove parts as needed and recheck affected connections.

## Why the compatibility boundary matters

The official Profind API supplies product records, declared relationships, and compatibility checks. A search result identifies a possible starting part; a connection check evaluates a specific relationship. Keep those decisions separate from application suitability, which still depends on the load, wire, environment, and installation.

If a product identity cannot be resolved or a compatibility check is unavailable, finish that check before relying on the connection. An empty group means no candidates were returned for that request; it does not establish that the assembly is complete.

> Keep the exact selected parts, connection checks, and application assumptions together during review.

## Review the selected configuration

- Confirm the load case includes startup, stall, inrush, and fault protection.
- Verify wire gauge and actual insulation diameter for every contact and seal.
- Check position count, spare-cavity policy, and key allocation.
- Inspect routing, backshell, bend radius, mounting, and service access.
- Confirm stock status without weakening compatibility or application constraints.
- Open manufacturer drawings and application specifications before release.

## Use iteration as a trade study

Change one requirement at a time—circuit count, wire size, current, packaging, or product family—then review the affected selections and compare the graph and BOM. This creates a visible trade study instead of a sequence of disconnected searches.

Save the accepted configuration with a short rationale. When requirements change later, the team can see which assumption drove the connector choice and re-run only the affected decision.

## Browse parts from this guide

- [Connector families and accessories](https://www.profind.shop/catalog/category/113)
- [Deutsch connector systems](https://www.profind.shop/catalog/category/396)

## Frequently asked questions

### Does the guided catalogue choose a complete assembly?

The catalogue helps you find products through questions when available and through category browsing. Select the required components, review the official compatibility checks, and confirm assembly completeness and application suitability before release.

### What should I record before selecting a connector?

Include circuits, voltage, continuous and transient current, wire gauge, insulation diameter, environment, sealing, mounting, packaging, service, and sourcing constraints.

### Can the selected configuration produce a BOM?

Yes. The Config Tool builds a BOM from the selected graph. Review its quantities and any required housings, contacts, retention, sealing, accessories, and tooling before ordering.

Canonical URL: https://www.profind.shop/blog/design-copilot-connector-selection