Summary. Molex identifies 43045-1014 as an active Micro-Fit 3.0 vertical PCB header with ten loaded circuits, two rows, a 3.00 mm mating pitch, through-hole termination, a PCB polarizing peg and gold plating in the mating area. This guide converts those first-party facts into a controlled mating and substitution review. It does not approve a receptacle, crimp contact, cable assembly, PCB footprint, alternate part, rating, inventory position, price or finished application.
Freeze the exact orderable identity
Start with the EPPTC 43045-1014 product record and keep every digit and hyphen in the BOM, request for quotation, inspection plan and document register. The Molex 43045-1014 product page is the first-party identity anchor. Record the access date and any source revision. Do not shorten the part to “43045,” “Micro-Fit header” or “ten-circuit header”: nearby records can change circuit count, plating, termination, orientation, packaging or PCB-retention features while remaining in the same family.
Separate interface facts from a mating approval
The official page describes a male, shrouded, dual-row vertical header and publishes its interface pitch and board-mounting method. Those attributes narrow the search, but they do not prove that any similarly pitched housing is a mate. For the proposed receptacle, record the complete manufacturer number and compare current controlled drawings, keying, cavity count, latch geometry and contact system. A sample that appears to fit is useful evidence, but it is not a replacement for documented interface control.
Control the PCB footprint and process evidence
Molex publishes a PCB locator, PCB retention and a recommended board thickness on the exact part page. Treat each value as source-bound input, not as a finished land pattern. The Molex 43045 product specification supplies family-level performance and test context; the applicable customer drawing must still control hole pattern, keep-outs, orientation, board-edge constraints and solder-tail geometry. Fabrication and assembly teams should record the drawing revision used to create the library footprint and retain an independent footprint review.
Build a substitution comparison
A substitute review should compare exact orderable records rather than marketing family names. Use a controlled matrix with part number, circuit count, row count, orientation, mating and termination plating, PCB location and retention features, termination style, dimensional drawing, compatible receptacle evidence, materials, qualification scope and process documentation. Mark every unverified field as open. A higher apparent rating or the same 3.00 mm pitch does not close differences in keying, footprint, plating, contact geometry or qualification. Preserve the reason for change, source revisions, reviewed samples, unresolved differences and approving role in the change record. If evidence is incomplete, hold the candidate as a sourcing option rather than silently converting it into an approved replacement.
Prepare the receiving and release packet
- Record 43045-1014 and the reviewed Molex page and specification revisions.
- Identify the proposed receptacle and any cable-side contacts by full manufacturer number.
- Attach the applicable drawing and the released PCB-library evidence.
- Define receiving checks for label identity, packaging traceability and visible damage only.
- Keep electrical limits tied to their stated test conditions and complete mated system.
- Keep current price, stock and lead time in the commercial record, not the technical specification.
Use related EPPTC pages as navigation
Browse the Molex brand page, wire-to-board connector category, Micro-Fit Connector System series page, power-connections application page and wire-to-board application page to find separate catalogue records. These relationships help discovery but do not establish mating, substitution or project suitability.
FAQ
Does the 3.00 mm pitch prove compatibility?
No. Pitch is only one interface attribute. Verify keying, latch, cavity layout, contact system and both controlled drawings.
Can a related Micro-Fit part replace 43045-1014?
Not without a documented comparison of the complete orderable records and responsible project approval.
Does active status mean the part is in stock?
No. Lifecycle and commercial availability are different; confirm quantity, price and lead time for each transaction.
Conclusion
A reliable 43045-1014 decision begins with exact identity, then traces the mating set, PCB footprint and any alternate through current first-party documents. For a document-led enquiry, contact Lianxinlian Electronics with the proposed receptacle, PCB revision and source versions.
Manufacturer Sources
Author: Lianxinlian Electronics Product Information Team. Technical data quality review: Lianxinlian Electronics Technical Data Quality Team performs an automated source, language and internal-link completeness check; it is not an engineering approval or a product-suitability decision.