5557 Vertical 3.0MM Pitch Connector Double Row 4P-24P Replaces Molex Connector 43045 Harness Wire Connector
Product Highlights
- Direct drop‑in replacement for Molex 43045 Micro‑Fit 3.0 series
- Vertical double‑row, 3.0 mm pitch, full range: 4P‑24P positions
- Wire‑to‑board solution for power & low‑speed signal, 5A per contact rating
- Polarized locking housing, anti‑mis‑insertion, high temperature UL94‑V0 housing.
- Supports custom harness assembly, tape‑reel / bulk packing, OEM & ODM available
Technical Specifications
General Mechanical Parameters
| Item |
Specification |
| Connector Type |
Wire‑to‑Board, Vertical Through‑hole Header |
| Pitch |
3.00 mm (0.118 inch) |
| Arrangement |
Double Row |
| Position Range |
4P,6P,8P,10P,12P,14P,16P,18P,20P,22P,24P |
| Mating Cycles |
Min 30 cycles |
| Mounting Style |
Vertical Through‑hole for PCB |
| Polarization |
Yes, anti‑mis‑insertion |
| Locking Mechanism |
Positive housing lock |
Material & Electrical Characteristics
| Item |
Specification |
| Housing Material |
Nylon 66 / LCP, UL94‑V0 flame retardant |
| Terminal Material |
Phosphor Bronze |
| Standard Plating |
Tin over nickel; Gold plating optional on contact area |
| Rated Current |
5 A per contact (AWG 20‑24 wire) |
| Rated Voltage |
250 V AC / DC |
| Max Withstand Voltage |
1500 V AC / 1 min, no breakdown |
| Contact Resistance |
≤ 20 mΩ max |
| Insulation Resistance |
≥ 1000 MΩ @500V DC |
| Applicable Wire |
AWG 28 ~ AWG 20 stranded copper wire |
Environmental & Soldering Guide
| Item |
Specification |
| Operating Temperature |
-40 °C ~ +105 °C |
| Solder Process |
Lead‑free through‑hole soldering; Peak temp ≤260 °C, 30s max exposure, max 3 cycles |
| Storage Condition |
Temperature:‑10~40℃, Humidity 40‑70%RH; avoid corrosive gas |
| Compliance |
RoHS‑2.0 compliant |
Product Features
- Vertical double‑row header, 3.0 mm center pitch, positions 4P‑24P full coverage
- Polarized housing + positive lock latch: prevents reverse mating, anti‑vibration anti‑disconnection under shock environment
- High‑temperature UL94‑V0 insulation material, suitable for lead‑free reflow soldering process
- Phosphor‑bronze contact terminal; tin plating standard, gold plating optional for harsh‑environment requirementMade-in-Ch...
- Wide wire gauge compatibility: AWG 28‑20 stranded wire for harness crimp assembly
- Drop‑in mechanical interchangeability with Molex 43045 series, no PCB footprint modification needed
- Multiple packing options: bulk bag, tray, tape‑and‑reel for SMT / auto‑insert production
Product Advantages
- Supply‑chain risk reduction: Drop‑in substitute for Molex 43045, resolve long lead‑time & component shortage risk, no PCB redesign required.
- Cost‑optimized BOM: Equivalent mechanical‑electrical performance vs original brand, competitive unit price for mass production.
- Robust anti‑vibration performance: Positive lock‑latch design, stable connection for vibration‑prone equipment.
- Flexible customization: Gold‑plated terminals, custom pin count, finished wire harness assembly, multiple packing modes for your production line.
- Strict incoming‑outgoing QC: 100‑percent dimensional & electrical sampling test; salt‑spray, temperature‑cycle validation available for project qualification.
- Fast technical support: Datasheet, 2D drawing, sample support for customer prototype verification.
Application
- Industrial automation: PLC, servo drives, sensor harness, industrial power modules
- Consumer electronics: Power supply units, household appliances, fan & motor control
- LED & lighting systems: LED driver board, smart lighting power‑signal connection
- Security & surveillance: Camera power board, access‑control equipment
- Medical auxiliary equipment: Non‑critical signal & power interconnects
- New‑energy low‑voltage assemblies: BMS auxiliary signal, battery pack internal wiring
- Robotics & drone: Compact power‑distribution board internal wire‑to‑PCB link
FAQ
1. Q: Do you have a catalogue? Can you send me the catalogue to check all your products?
A: Yes, you can contact us online or send an Email to get the catalogue.
2. Q: I can't find the product in your catalogue, can you make this product for me?
A: Our catalogue shows most of our products, but not all. Just let us know what product you need, and how many you want. If we do not have it, we can also design and make a new mould to produce it. For your reference, making an ordinary mould will take about35-45 days.
3. Q: Can you provide a sample? Are these samples free?
A: Yes, we provide 5-10 pcs of connector free samples for testing. But you have to pay for the shipping cost
4. Q: What about your delivery time?
A: Stock goods are delivered within 1 day; customized goods are delivered within 5-7days
5. Q: How to ship my order?
A: For small packages, send them by Express, such as DHL, FedEx, UPS, TNT, EMS. That's Door-to-Door service. For big packages, we can send them by Air or by sea. We use standard export cartons. We are responsible for any product damage caused during delivery.
6. Q: What kind of payment do you accept? Can I pay RMB?
A: Weaccept T/T(Wire transfer), Western Union, and PayPal. Please make sure that we can receive the same amount as the Invoice. And you can pay in RMB. No problem.
7. Q: How about your company's quality control
A: Strictly obey ISO9001, IQC, OQC, IPQC, QA occupy 10% of our Quality department. All of our products will be tested by CCD.
8. Q: I need your price list of all your products. Do you have a price list?
A: We do not have a price list of all of our products. Because we have so many items, it's impossible to make all of their prices on a list, and the prices are always changing because of the material cost and quantity. And you can give us a list of all of the items you need; we will confirm carefully one by one and give you a specification and price list
9. Q: Can you make customized products and customized packing?
A: Yes. We have made a lot of customized
products for our customers formerly (mainly wire harnesses). About customized packing, there is no problem for we put your logo or other information on the package. Just have to point out that it incurs additional cost.
10. Q: What certificates do you have?
A: CE, CQC, UL, ISO9001, ISO14001, IATF16949, ISO45001, QC080000, etc.
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