For a pogo pin manufacturer, IMDS becomes relevant when a connector is supplied for an automotive project whose customer requires a submission. The connector may be small, but its copper alloy, spring material, plating and plastic components still contribute to the material composition of the finished assembly.
IMDS is a material reporting system, not a product certification. An accepted submission does not establish the connector's current rating, vibration resistance, contact life or environmental durability. Those characteristics require their own specifications and verification.
A connector supplier therefore has two related responsibilities: manufacturing the approved component and maintaining material information that accurately describes it.
The scope of the declaration starts with the product being delivered. A supplier delivering individual pogo pins has a different reporting scope from one delivering a complete magnetic connector with a housing, magnets and cable.
| Part or material | Information to establish |
|---|---|
| Plunger | Actual metal grade, composition, mass and surface treatments |
| Barrel | Base alloy, mass and applicable coating layers |
| Internal spring | Wire material, grade, composition and mass |
| Contact plating | Composition and mass of each applicable layer |
| Insulating carrier or housing | Specific resin compound and its material composition |
| Magnets and mounting parts | Material composition, coatings and component masses, where included |
| Cable, solder, adhesive and seals | Materials present in the delivered assembly, where applicable |
This table is a starting point for reviewing the bill of materials. It does not prescribe a universal pogo pin construction.
Plating deserves particular attention. A gold-plated brass plunger should not be represented simply as one material called "gold-plated brass." The base alloy and its distinct coating layers need to be represented appropriately. IMDS guidance treats homogeneous materials separately and identifies plated metal as a component or semi-component containing multiple materials.
For example, a plunger may contain a copper alloy substrate, a nickel underlayer and a gold contact finish. The declaration must reflect the actual construction. If the deposited coating is an alloy, its composition should come from reliable coating information rather than an assumption that every gold-colored finish is pure gold.
The reporting basis is the material in its delivered condition. Chemicals used during manufacturing that are consumed or removed during processing are treated differently from materials remaining in the finished part. For a plated connector, the coating deposited on the contact is relevant; the entire plating-bath formulation is not a description of that coating.
This distinction also matters for adhesives, coatings and other materials that change during processing. Supplier information should describe the condition relevant to the delivered component.
A drawing and a conventional bill of materials provide the starting structure, but they may not contain enough information for an IMDS submission. Descriptions such as "brass," "stainless steel" or "engineering plastic" leave important details unresolved.
Two brass grades can have different chemical compositions. Two plastic compounds with the same base polymer can contain different fillers or additives. A spring material substitution can change the declaration even when its dimensions and measured force remain acceptable.
The supporting records should therefore identify the actual materials used in production. Useful information includes material designations, supplier references, composition data, coating specifications and the relationship between those records and the finished part number.
Where a suitable supplier MDS is available, its identity and version should be checked against the material being purchased. A published entry should not be selected merely because its name resembles the material on the drawing.
For an automotive connector project, preparation can follow a practical sequence:
Confirm the customer's submission requirements. Establish the recipient company information, customer part number, drawing revision, submission timing and any applicable OEM instructions.
Define the delivered product. Confirm whether the order covers individual contacts, an assembled connector or a complete cable assembly. Build the reporting scope around that delivery.
Collect and review material information. Obtain supporting data from metal, spring, plating, molding and other relevant suppliers. Resolve gaps before building the final declaration.
Create and check the material structure. Verify component quantities, masses, material classifications and the relationship between the declared materials and the approved BOM.
Submit and track the customer's response. Retain the MDS ID, version, submission status and review comments. Correct rejected data and follow the customer's acceptance process.
An MDS ID identifies a data record; it should not be presented as proof that the customer has accepted that record. The submission status and the product version it covers also matter.
Customers may require accepted IMDS information as part of their Production Part Approval Process, or PPAP. In such projects, missing or rejected material data can delay approval even when the physical samples meet dimensional requirements. The submission deadline and acceptance conditions should be agreed with the customer during project planning.
IMDS also needs to be kept separate from other compliance documents. RoHS, REACH and ELV have different purposes and scopes. Material data can support an assessment, but submitting an MDS does not automatically demonstrate compliance with every applicable requirement. A customer may still need supplier declarations, targeted test reports or other supporting evidence.
For custom connectors, material reporting is easier when it is considered during development. We work from customer drawings to develop pogo pin and magnetic connector solutions, coordinating contact design, precision machining, plating, housings and assembly requirements. Where an automotive customer requires material reporting, its documentation requirements should be included in the initial project review alongside the mechanical and electrical specifications.
This allows material choices to be evaluated before they are fixed in the production design. A material that meets the machining or performance requirement may still need additional supplier documentation before it can be used in the customer's approval process.
After approval, material information needs to remain connected to engineering and purchasing changes. Changes worth reviewing include:
- Replacing one copper alloy with another.
- Changing the spring wire grade.
- Altering the plating composition or layer structure.
- Introducing a different plastic compound.
- Changing an adhesive, seal or cable material.
- Replacing a supplier where the supplied material data differs.
Not every supplier or process change produces a different material composition. Each change nevertheless needs an assessment so that the manufacturer can determine whether the existing declaration remains accurate and whether customer notification or resubmission is required.
Updates may also become necessary when substance reporting requirements change, even if the physical part remains unchanged. Official IMDS guidance identifies circumstances in which newly reportable substances can require revised submissions. Customer requirements must be considered alongside the applicable system rules.
For procurement teams, the useful question is whether the supplier can provide accurate, traceable material information for the specific connector being purchased. That includes knowing which materials are used, obtaining reliable upstream data, matching the declaration to the approved revision and maintaining it when changes occur.
1. Does every pogo pin connector require an IMDS submission?
No. The requirement depends on the customer and supply program. Automotive projects commonly require material reporting, while consumer electronics or general industrial customers may request other documentation. Confirm the requirement before approving materials or scheduling production.
2. Is there an "IMDS certificate" for a pogo pin connector?
IMDS is not a product certification scheme. The relevant records are the material data sheet, its ID and version, and its submission or acceptance status. These records do not replace electrical, mechanical or environmental qualification.
3. Do gold and nickel plating need to be included?
Yes, applicable coating layers must be considered in the material structure. Their small mass does not justify treating the whole plated contact as one homogeneous material. The declaration should reflect the actual substrate and coating construction.
4. What should an OEM provide when requesting a custom connector with IMDS requirements?
Provide the drawings, part number and revision, electrical specifications, intended application and delivered assembly scope. Also identify the customer's IMDS recipient information, reporting instructions and approval deadline. The supplier can then review the design and material documentation requirements together.
