43045-0420 Molex Connector (Other) In Stock
Molex 43045-0420 is a Micro-Fit 3.0 dual-row vertical PCB header with 3.00 mm pitch, 4 circuits, tin-plated contacts, and integrated solder tab for secure through-hole board mounting. Rated for up to 5 A per circuit, this polarized rectangular power connector ensures robust mating in power distribution applications. From $0.80 in stock with worldwide shipping.
- Manufacturer
- Molex
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- 43045-0420 Datasheet PDF
- Category
- Connector
- Price
- From $1.4371(MOQ 1)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-circuit dual-row Micro-Fit 3.0 vertical header with 3.00 mm pitch for compact power connector footprints
- Up to 5 A per circuit current rating with tin-plated terminations for reliable power and signal distribution
- Integrated solder tab provides additional mechanical PCB anchoring against connector pull-out forces
- Keyed, polarized housing prevents mis-mating and ensures correct orientation in power harness assemblies
Applications
The Molex 43045-0420 Micro-Fit 3.0 header is widely used in power distribution and wire harness applications inside computer enclosures, industrial equipment, and embedded power systems where a compact 3.00 mm pitch 4-circuit connector is needed. Its 5 A per circuit rating accommodates 12 V and 24 V power rails in storage drives, fan controls, and motor power boards. The solder tab and through-hole design provide the mechanical strength required for repeated mating cycles in field-serviceable equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 7.87 |
| Body Breadth | 0.345inch |
| Body Depth | 0.39inch |
| Body Length | 0.38inch |
| Body/Shell Style | PLUG |
| Connector Type | RECTANGULAR POWER CONNECTOR |
| Contact Arrangement | S0P4 |
| Contact Finish Mating | NOT SPECIFIED |
| Contact Finish Termination | Tin (Sn) |
| Contact Gender | MALE |
| Contact Material | BRASS |
| Contact Resistance | 10mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Dielectric Withstanding Voltage | 1000VAC V |
| Durability | 30Cycles |
| Empty Shell | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | GLASS FILLED LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Option | GENERAL PURPOSE |
| Reference Standard | UL |
| Terminal Pitch | 3mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 4 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.30 |
| Country of Origin | Ireland, Japan, Mainland China, Mexico, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What current rating and pitch does the Molex 43045-0420 Micro-Fit 3.0 header support?
The Molex 43045-0420 supports up to 5 A per circuit at 3.00 mm pitch in a 4-circuit dual-row configuration, making it suitable for 12 V and 24 V power distribution rails in PC hardware, industrial controllers, and embedded power boards requiring compact high-current connectors.
How does the solder tab on the 43045-0420 improve mechanical retention on the PCB?
The integrated solder tab adds a secondary through-hole anchor point that bonds to the PCB during wave or selective soldering, increasing pull-out resistance to over 40 N and preventing connector rocking or detachment under cable strain in applications with repeated mating cycles.
Is the Molex 43045-0420 compatible with Micro-Fit 3.0 mating plugs and crimp terminals?
Yes, the 43045-0420 is fully compatible with Molex Micro-Fit 3.0 series receptacle housings and 3.00 mm pitch crimp contacts, supporting wire gauges from 18 AWG to 24 AWG for harness assembly, and the polarized keying prevents incorrect pin-1 orientation during field installation.
For which industrial power applications is the dual-row 4-circuit layout of 43045-0420 most efficient?
The dual-row 4-circuit layout at 3.00 mm pitch delivers two pairs of power and ground contacts in a footprint under 10 mm wide, ideal for distributed 12 V or 24 V power rails on motor drive PCBs, fan control boards, and embedded computing cards where space saving and up to 20 A total throughput are needed.
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About Molex
Molex is a leading electronic component manufacturer. FindMyChip sources Molex ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.6956 | $2.70 |
| 100+ | $2.1100 | $211.00 |
| 200+ | $1.4371 | $287.42 |
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